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values | application_kind
large_stringclasses 18
values | publication_date
date32 | filing_date
date32 | grant_date
date32 | ipc
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100
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6.12k
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29.2k
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large_stringclasses 35
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GB-270520-A
|
GB-1690326-A
|
GB
|
A
|
A
| null | 1926-07-06
| null |
F27B13/02
| null |
Improvements in or relating to kilns
|
en
|
270,520. Carborundum Co., Ltd., (John son, B. M.). July 6, 1926. Continuous kilns.-In a multiple chamber continuous kiln an elongated combustion chamber 10 having its walls formed of a refractory material of high thermal conductivity is fitted in each compartment, and arrangements are provided for distributing thereto a supply of heated air from a previously fired compartment. As shown, each combustion chamber is divided by a partition 13 into lower and upper flues 11, 12 which are connected together at the end remote from the burner 27 delivering into the lower flue. The upper wall has apertures 15 delivering into the bag wall space of the kiln, while the lower wall has ports 14 communicating with flues 5 extending beneath the floor of the adjacent compartment. These flues communicate directly with the kiln chamber through ports 2 and with the bag wall space through ports 29. Damper-con. trolled outlet ports 24 in the roof of each compartment lead to stack flues b, and the two end chambers of the line can be connected by transverse flues 16, 17 and a longitudinal external flue. In operation, assuming that the compartment E is under fire, air is admitted to the compartment C and passes as shown by the arrows to the cumbustion chamber 10 of the compartment E. Here combustion is effected and the heating gases pass through and below the compartment E to the end flue 16. From this they are transferred to the end flue 17, and pass through and below the compartment A, to be exhausted through the outlet . ports of the compartment B.
|
en
|
GB-145271-A
|
GB-1692719-A
|
GB
|
A
|
A
| null | 1919-07-07
| null |
B43L13/20
| null |
Improvements in or relating to drawing-appliances
|
en
|
145,271. Poole, E. C. July 7, 1919. Stencils.-For teaching drawing or for amusement a stencil is pierced with one or more designs and is formed to facilitate its being pivoted at one or more points so that by manipulating the appliance a figure with great variation of design may be produced. Fig. 1 shows a stencil pierced with designs a and provided with centre points or pin-holes c. A sheet of paper is placed under the stencil and the designs drawn as desired. By moving the stencil about one of its centres the designs may then be drawn in different positions and multiple designs such as shown in Fig. 2 are thus formed. Notches d may be provided to regulate the degree of movement.
|
en
|
GB-982285-A
|
GB-1698963-A
|
GB
|
A
|
A
| null | 1963-04-30
| null |
G03G13/045
| null |
Process for the production of electrophotographic continuous-tone images
|
en
|
982,285. Electrophotographic processes. AGFA A.G. April 30, 1963 [May 19, 1962], No. 16989/63. Heading G2H. [Also in Division H1] An electrophotographic process for producing images comprises charging a photo-conductive layer, exposing the charged layer to the original to be reproduced, thus producing a latent electrostatic image, subjecting the layer carrying the image to a second charging, the product of the voltage and duration of which is from 0.1 to 0.01 of that of the first charging and developing the image with a coloured electrically charged aerosol. In one example, a sheet carrying a photo-conductive layer is placed on an earthed metal plate and is charged for 20 seconds by a needle electrode 180 mm. above the centre of the plate with a voltage of 20 Kv between the electrode tip and plate. The photo-conductive layer is then exposed for two seconds in contact with a continuous tone transparent positive. The original is removed and a second charge is applied to the layer for 0. 5 seconds in the dark at the same voltages. The latent image is developed by an aerosol applied to the layer through a grid-shaped developer electrode. The developer liquid may be a saturated solution of Brilliant blau CC in benzyl alcohol. The second charging may be carried out in several separate steps and the image may be developed between these steps. Specifications 834,502, 874,133, 883,783 and 896,610 are referred to.
|
en
|
GB-740404-A
|
GB-1703553-A
|
GB
|
A
|
A
| null | 1953-06-19
| null |
H03K21/08
| null |
Electrical multiplication circuit
|
en
|
740,404. Pulse circuits. STANDARD TELEPHONES & CABLES, Ltd. June 19, 1953 [June 26, 1952], No. 17035/53. Class 40 (6). [Also in Group XIX] A calculating circuit (see Groups XIX) employs, between stages of a binary counter, discriminating or gating networks each such that a single pulse at a or c produces an output pulse at b while coincident pulses cause an output at d and not b. In Fig. 12, a negative pulse at a or c will cut off one side of a double triode V2, thus increasing the current through the other side and lowering its anode potential so that a negative pulse is passed to b through rectifier r4 ot r5 and capacitor C. However, coincident pulses at a and c will cut off both sides of the triode, thus lowering the potential at the commoned cathodes which are connected to d. The alternative embodiment shown in Fig. 13 responds to positive pulses and comprises " or " and " and " gates comprising rectifiers r9, r10 and r6, r7 respectively. The coincidence output pulse at d is also passed to the grid of a triode V3 which then becomes conductive and prevents b going positive. In a simplified arrangement (Fig. 14, not shown) for the case where a pulse is always present at c when a pulse appears at a, the rectifier gates are omitted.
|
en
|
GB-1504689-A
|
GB-1708374-A
|
GB
|
A
|
A
| null | 1975-04-18
| null |
F21V29/00
| null |
Lighting devices
|
en
|
1504689 Electric lamps J A ORAM 18 April 1975 [18 April 1974] 17083/74 Heading F4R A sealed lighting device, e.g. for machine tools, comprises an electric lamp 54, e.g. a tungsten-halogen lamp, in a metal housing 1 to which heat is conducted from the lamp by a ceramic ring 38, a transparent cover-plate 35, a rear cover-plate 55 and a cable entry assembly, all sealed to the housing 1. As shown, the lamp 54 is located within the ceramic ring 38 by a circular metal strip insert 46 in thermal and electrical contact with the lamp. The lamp is held in place by a spring 62 so that the filament is at the reflector focus. The housing is mounted for limited angular movement on a spigot support 18 to which the cable is sealed. The lamp is operated by a switch 32 controlled by a rotary knob 28. In an alternative arrangement, the strip metal insert is replaced by a square section ring (110) (Figs. 7, 8, not shown) with a radial hole for receiving a wire end.
|
en
|
GB-1496474-A
|
GB-1708876-A
|
GB
|
A
|
A
| null | 1976-04-27
| null |
C21C7/076
| null |
Treating steel in a ladle
|
en
|
1496474 Treating steel CENTRE DE RECHERCHES METALLURGIQUES-CENTRUM VOOR RESEARCH IN DE METALLURGIE 27 April 1976 [29 April 1975] 17088/76 Heading C7D In the treatment of molten steel in a ladle, briquettes of addition or treating agents are added, the briquettes consisting of several different layers, one inside the other, each of which reacts with the steel in turn in accordance with a desired sequence. The external layer comprises one or more deoxidizing substances such as ferro manganese, ferro aluminum and/or ferro silicon, the second comprises one or more nitrogen fixing substances, and a third layer or core comprises a desulphurizing substance and/or ferro boron. The briquette may be bonded with a tar binder.
|
en
|
GB-694850-A
|
GB-1731443-A
|
GB
|
A
|
A
| null | 1943-10-20
| null |
G01S13/42
| null |
Improvements relating to aiming equipment for projectile despatching apparatus
|
en
|
694,850. Electric control systems. SPERRY GYROSCOPE CO., Inc. Oct. 20, 1943 [May 22, 1942], No. 17314/43. Class 40 (i) [Also in Group XXI] Gun sighting apparatus particularly for use on aircraft comprises means for setting up a reference direction which is independent of the angular movements of the aircraft, and means, including a computer, adapted to set up a line of aim to the target, such line of aim being also substantially independent of the angular displacements of the platform, such as the aircraft, upon which the apparatus is mounted. In the construction shown in Fig. 1 the computer 1 actuates elevation and azimuth transmitters 12, 13, whose output voltages serve to control the orientation of remotely actuated guns as in Specification 630,064, or to indicate the correct firing angles to the gunners. The necessary data is set into the computer by eight shafts 2, 3, 4, 6, 7, 8, 9 and 11 which respectively impart data corresponding to target dimension, indicated air speed, altitude, elevation of the target, azimuth position of the target, slant range, rate of change of azimuth of the target, and rate of change of elevation. The shafts 6, 7, which set in the data corresponding to the elevation and azimuth positions of the target as determined by a sight 10 are controlled in part by the manual operation of a control member 18 which is actuated to maintain the line of sight on the target, and in part by a pair of gyroscopes 70, 90 whose spin axes remain fixed in space whereby any pitching, rolling or yawing of the aircraft on which the sighting device is mounted results in relative movements between the aircraft and the gyroscopes, such motion being suitably transmitted to the shafts 6, 7. As shown in Fig. 2, the control 18 is movable about two axes 19, 21, and serves, through circular rack and pinion devices 23, 27, and gears 34, 36 to move the arms 28, 37, of two potentiometers 29, 38. The potentiometer 29 is energized by a battery 31 and has a centre tap 33. When therefore, the control 18 is moved about axis 19 to maintain the line of sight on the target the voltage in the output wires 32 of the potentiometer 29 corresponds in magnitude and sense to the angle and direction of such movement. In a similar manner a voltage is applied to wires 42 when the control is moved about axis 21. The voltage in the wires 42 is amplified by an amplifier 44, see also Fig. 3, the output of which actuates a torque motor 48 of a servo 46, the arrangement being such that the angular displacement of the member 49 of the motor corresponds in direction and magnitude to the movement of the control 18. Member 49 is centralized by springs 51 and is connected to the piston 52 of a control valve 53, which is supplied with hydraulic or pneumatic pressure by a duct 54. When the piston is moved in either direction a pressure is applied to one side or the other of the fixed piston 59 of a servo 60, thus producing a movement of the cylinder 65 in which piston 59 is mounted. Cylinder 65 is connected to the housing 55 of valve 53 and thus repositions the housing to its neutral position. Cylinder 65 is also connected to the input 61 of a hydraulic variable transmission device, the output 64 of which serves to drive a shaft 47 which is geared to the shaft 7 of the computer. Since the displacement of the cylinder 65 represents the rate at which the shaft 47 is rotating it is geared as shown to a shaft 67 which transmits such motion to the shaft 9 of the computer. In a similar manner the shafts 6, 11 of the computer are actuated when the control 18 is moved about its other axis. Shaft 7 is also actuated by the gyroscope 70 when the aircraft carrying the sighting device and guns changes its attitude in azimuth. Such changes result in a relative movement of the gyro ring 74 with respect to a pick-off 77, the resultant signal being fed to an amplifier 78 controlling a motor 79. The latter repositions the pick-off by worm and worm wheel 81 and link 82, and also drives the shaft 7 via a differential 68. Shaft 7 is :geared as shown to a frame 97 carrying a second gyro 90, which actuates the shaft 6 in a similar manner, the frame being so moved that the axis 93 between the gyrohousing and frame 94 is maintained in a vertical plane containing the target. Slant range data is set into the computer by operating a pedal 109 which through a potentiometer 111 and servo 113 actuates the shaft 8. In a modification Fig. 6 (not shown) the servo 46 is coupled directly to the shaft 7 and the shaft is geared to a turntable carrying a gyro. When the shaft rotates the gyro precesses, and the precessional movement is used to produce the required movement of shaft 9. The other gyro similarly actuates shaft 11. In another modification Fig. 4 (not shown) the gyro in frame 97 spins about a horizontal axis and means, including a pick-off and torque motor, are provided to maintain this axis in the vertical plane containing the target. According to a further modification the mechanism shown in Fig. 1 is actuated by a remote sighting device, such as a telescope, movements of which about vertical and horizontal axes produce signals in self-synchronous transmitters. Such signals are received by generators 133, 134, which are connected as shown, upon actuation of switches 84, 43 with the amplifiers 44, 86. The generators are geared as shown to shafts 88, 47 and their output control signals thereby represent the relative elevation and azimuth displacements between the orientation of the sighting device and the data setting of the shafts 6, 7. Fig. 8 (not shown) illustrates schematically a system whereby the shafts 47, 83, 88 and 107 of Fig 1 are coupled to transmitters which are connected to generators having follow-up devices adapted to actuate the remote sight. By this arrangement the line of sight is stabilized and corrections, applied by the manual control, become necessary only when the target is moving with respect to the earth. In the modification shown in Fig. 9 a single gyro 170 is employed, the gyro consisting of a rotor 171 spinning about axis 172 gimballed in a ring 173 which pivots about axis 174 in a ring 176. The latter pivots about axis 177 in a followup ring 178 which pivots about the same axis in a bracket 179 pivoting about a vertical axis. When control member 18 is moved to follow the target in elevation a control signal passes, as described with reference to Fig. 1, through cable 32 via switch 84 to amplifier 86 the output signal of which actuates a torque motor 48' which in turn actuates a servo 60<SP>1</SP> serving to rotate a pulley 182. The pulley is connected by springs to arms 183 on axis 174 and thereby applies a torque to ring 173. The gyro therefore precesses about axis 177 at a rate proportional to the torque and hence proportional to the signal in cable 42, such precessional movement being sensed by a pick-off 189 the signal from which is amplified at 191. The amplified signal actuates a follow-up motor 193 which serves to drive the follow-up ring 178 via shafts 199, 202, and gearing as shown, and also to drive the input shaft 6 of the computer. The shaft 11 representing the angular rate of the target in elevation is driven by a flexible shaft driven by gearing 213 connected to the pulley 182. Shaft 6 is connected to the sighting device as in the case of Fig. 1. A similar arrangement of devices are employed to follow the target in azimuth, the drive to the torque applying pulley in this instance however, incorporating a solid cam 214 rotationally set by gearing on shaft 6 and vertically set by means controlled by servo 60. The cam applies the necessary corrections arising from the deviations of axis 174 of the gyro from the vertical position. By such means the axis of the gyro is maintained parallel with the line of sight and hence oriented towards the target. Changes in the altitude of the craft on which the sight and gyro are mounted result in the actuation of the follow-up motors which change the orientation of the sighting device with respect to the craft and also actuate the computing mechanism. In a further modification the sighting device incorporates a radio-scanna on which is mounted a gyro to which torques are applied as in Fig. 9, the precessional movements of the gyro being sensed by pick-offs and the amplified signals being used to reposition the scanner to align it with the target. Movements of the scanner are transmitted by electrical transmitters to receivers associated with the computer. The main features of the system are substantially the same as the sighting system described in Specification 714,670. Specification 360,428, [Group XX], also is referred to.
|
en
|
GB-1086678-A
|
GB-1737667-A
|
GB
|
A
|
A
| null | 1965-05-27
| null |
C08K5/00
|
GIAIMO MATTHEW PETER DI
|
Stabilisation of pvc
|
en
|
Rigid polyvinyl chloride is stabilized against light by incorporating therein (a) 0.1 to 5.0 weight per cent, based on the polymer of a monoamide R2CON(R1)2, where R1 is hydrogen C1- 18 alkyl or C1- 6 hydroxy- or cyanoalkyl, and R2 is C1- 18 alkyl, alkenyl, carboxyalkyl or carbalkoxyalkyl, di-(C1- 6 alkyl) aminoalkyl or alkanamido alkyl; or a heteropolycarbamylalkane Z[-alkylene CON(R3)2]n, where Z is imino, C1- 18 N-alkylimino, thio or phosphinylidyne, "alkylene" contains 1 to 3 carbon atoms, and R3 is hydrogen, C1- 18 alkyl or C1- 6 hydroxy- or cyanoalkyl and n is 2 or 3; and (b) 0.1 to 3.0 weight per cent of an ultra-violet light absorber selected from substituted 2-hydroxybenzophenones, 2-(2-hydroxyphenyl) benzotriazoles, phenolic esters, triazines, benzothiazoles, benzylidene malonic esters and arylaminoethylenes. Many suitable stabilizers are listed and examples describe the stabilization of rigid polyvinyl chloride containing a conventional heat stabilizer and optionally titanium dioxide and light stabilizers comprising N-(2-dodecyl) acrylamide, N,N-dimethyl oleamide, N,N-bis-(2-cyanoethyl) succinamic acid, stearamide, N,N-dimethyl stearamide, N-(n-dodecyl) linoleamide, N - decyl - 3 - dimethylaminopropionamide, N-octadecyl - 3 - dimethylaminopropionamide, N,N - bis - (2 - hydroxyethyl) lauramide, 3,31-(methylimino) bis - N - dodecyl propionamide or 3,31,311 - phosphinylidyne tris - (propionamide); and 2 - hydroxy - 4 - methoxybenzophenone, 2 - (2 - hydroxy - 5 - methylphenyl) benzotriazole or diethyl p-methoxybenzylidene malonate.
|
en
|
GB-332349-A
|
GB-1738029-A
|
GB
|
A
|
A
| null | 1929-06-06
| null |
G01C17/00
| null |
Improvements in magnetic compasses
|
en
|
332,349. Nielsen, A. R. June 6, 1929. No Patent granted (Sealing fee not paid). Magnetic compasses.-Electromagnets are used instead of a permanent magnet as the directional element of a compass. The two electromagnets 6, 7 are supported by pivots 5 on a disc 4 carried by a pivot 2 from the compass bowl 1, and are provided with grooved discs 10, 11 connected by a string &c. 12 so that they are constrained to rotate together about their pivot axes. Current from an induction machine &c. is supplied alternately to the magnets 6, 7, the periods of energization of the two magnets being equal. A spring 20 carried by one of the pins 5 co-operates with a stop 21 on the corresponding electromagnet to retain the coils in coaxial relation. The compass card 14 is attached by rods 13 to the disc 4.
|
en
|
GB-255448-A
|
GB-1740426-A
|
GB
|
A
|
A
| null | 1926-07-12
| null |
C10G9/38
| null |
Oil gas generator
|
en
|
255,448. Misch, O. July 20, 1925, [Convention date]. Producers. - A retort b filled with coke is supplied with oil or tar through a pipe d and is heated externally to gasify the oil or tar, the gases escaping through an outlet e. The retort is heated by gasifying the coke residue in a gas-producer g, the 'gas from which is used partly for external heating and partly for circulation through the charge. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the feature that the retort may be heated externally by burning the coke which is loaded with residues from the cracking of the tar or oil. This subject-matter does not appear in the Specification as accepted.
|
en
|
GB-515887-A
|
GB-1742638-A
|
GB
|
A
|
A
| null | 1938-06-11
| null |
F16C1/12
| null |
Improvements in and relating to signalling apparatus and the like
|
en
|
515,887. Order telegraphs. M.R.C., Ltd., and PILE, S., June 11, 1938, No. 17426. [Class 118 (ii)] Relates to signalling apparatus of the kind in which a receiver and transmitter are connected by a flexible compound cable adapted to transmit both push and pull. According to the invention, the cable works in a guiding-casing and has spaced projections, such as the turns of a helix, on its outer surface which mesh with toothed wheels connected with the operating handle and the indicating device. Means are provided for adjusting the receiver in relation to the transmitter, and for preventing certain signals from being given by accident. The transmitter may comprise a body casting 10, Fig. 1, having a central depression in which is housed, a gear wheel that can be turned to any desired position by a handle 19 provided with an index pointer 20 working, over a plate 30 on whch indications are displayed. The gear wheel engages helical or other projections on the flexible cable 16 which passes through fairleads 14 forming part of the casting 10. A spring-pressed ball detent 21 is housed in the hub of the handle and co-operates with notches 22 on the surface of the casting in order to define positions in which the handle can be set. In one position on the casting, a spring - pressed pin 35 is provided to prevent the pointer 20 from passing, until a separate action has been performed, in order to guard a special signal. Additional stops such as 36 may be provided. In another construction the detent 21 is replaced by a spring-operated latch which engages notches in the rim of the casting 10, and is released by a rod which passes axially through the handle. The indications on the casing are viewed through a recess in the handle. The receiver comprises a casting 52, Fig. 4, with a recess which houses a gear wheel 55 that engages the projections on the cable 16. An annular gap between the gear wheel and its pivot 54 is filled by a sleeve 56. By withdrawing the sleeve, the gear wheel can be brought out of mesh with,the cable and can be set to any desired angular position, so that the indications given by the receiver can be adjusted to correspond exactly with -those given by the transmitter. The signals are displayed on an annular ring 62, and are viewed through a window 61 on a plate secured to the gear wheel. A'gong 58 is secured to the pivot 54 and is operated by a hammer, pivoted at 65, when the gear wheel is rotated.
|
en
|
GB-1278164-A
|
GB-1743670-A
|
GB
|
A
|
A
| null | 1970-04-13
| null |
C07D403/06
| null |
Process for producing benzodiazepine derivatives from phthalimidoacyl-indole derivatives
|
en
|
1278164 Ozonides; benzodiazepines SUMITOMO CHEMICAL CO Ltd 13 April 1970 [16 April 1969 29 May 1969] 17436/70 Heading C2C Ozonides and benzodiazepines are prepared by the following route (R 1 =H, halogen, C 1-4 alkyl, NO 2 CF 3 ; R 2 =H, halogen; R 3 , 4 =H, C 1-4 alkyl; X=halogen), optionally followed by salt formation. The ozonide is obtained by treating (II) with ozone, and affords (I) by reaction with a hydrazine derivative. (II) may alternatively be prepared by acylating a compound of the Formula (VII) with (IV) and heating the product of the Formula (V) (VII) may be prepared by reacting the appropriate phenylhydrazine and aldehyde or ketone, and converted to (III) by Fischer cyclization. Alternatively, (III) may be prepared directly from the phenylhydrazine and aldehyde or ketone.
|
en
|
GB-1075886-A
|
GB-1744065-A
|
GB
|
A
|
A
| null | 1965-04-26
| null |
B23K11/00
| null |
Improvements relating to mesh welding machines
|
en
|
1,075,886. Welding by pressure. BAUSTAHLGEWEBE G.m.b.H. April 26, 1965 [April 29, 1964], No. 17440/65. Heading B3R. A mesh-welding machine has a number of electrodes suspended from hanger units and the units are interconnected by a lazy-tongs arrangement guided by a beam. A beam comprises a front part 1 spaced from a rear part 1<SP>1</SP> and upper and lower slide bars 2, 3 on the front part 1 slidably support units 4 carrying electrodes 5. Longitudinal slots 16 are provided in the front and rear parts of the beam and pins 7 secured to the welding units are slidable in the slots. The pins 7 form the centre pivot points of a lazy tongs arrangement arranged in the space between the beam parts 1, 1<SP>1</SP>, one upper pivot point of which arrangement is connected to a motor-driven worm wheel so that by adjustment of the worm wheel the lateral spacing of the welding units may be varied. A similar arrangement may be provided for the entry end longitudinal wire guides which may be connected to the motor drive. To effect welding the beam is lowered and after welding is raised.
|
en
|
GB-760755-A
|
GB-1754554-A
|
GB
|
A
|
A
| null | 1954-06-15
| null |
B65H63/06
|
ABBOTT ALWYNE
|
Improvements in or relating to devices for detecting variations in yarn cross-section
|
en
|
760,755. Photo-electric apparatus. BRITISH CELANESE, Ltd. June 13, 1955 [June 15, 1954], No. 17545/54. Class 40 (3). [Also in Group XX] An apparatus for detecting or measuring irregularities in the cross-sectional area of a running yarn comprises a light source of even intensity, a lens positioned to form a real image of the source, means for passing the yarn along the optical axis of the lens and through the said image and a photo-electric cell arranged to detect or measure changes in the light flux from the image. As shown, the lens 7 forms an image of the circular aperture 5 in the plate 4 and the yarn is passed along the lens axis and through this image by pulleys 11, 12. Variations in the light flux from the image are detected or measured by focusing the image on to a photo-electric cell 10 by means of a second lens 8. A stop 9 is placed in the plane of the image formed by the second lens 8 and has a diameter slightly smaller than that of the image. The image formed by lens 7 should be only slightly larger than the maximum diameter of the yarn. Stops 5 and 9 may be adjustable iris diaphragms. The current from the photoelectric cell may be passed to a galvanometer or cathode-ray tube, and if desired it may be amplified. A permanent record of the signal may be produced. Instead of using pulleys, the yarn may be passed through holes formed in the centres of the lenses.
|
en
|
GB-805826-A
|
GB-1758056-A
|
GB
|
A
|
A
| null | 1956-06-07
| null |
G03C1/34
|
HOWE LAURENCE CLIFFORD
|
Improvements in or relating to photographic light-sensitive materials
|
en
|
805,826. Photographic light - sensitive materials. ILFORD, Ltd. April 23, 1957 [June 7, 1956], No. 17580/56. Class 98(2) A photographic element comprises a gelatino silver halide emulsion layer and a supercoat colloid layer containing a condensation product of ethylene oxide capable of increasing the effective emulsion speed, either or both of the emulsion layer or supercoat containing an antifogging agent of the formula : where R is an alkyl group. The condensation product may be a direct polymer of ethylene oxide, or a produce obtained by condensing ethylene oxide with a phenol, a glycol, an aliphatic alcohol, a hexitol ring dehydration product, an alphatic acid, amine or amide, or castor oil. The antifoggant may be a 4-hydroxy-6-alkyl-1:3: 3a:7- tetrazaindene. The supercoat is said to have antistatic properties. Specifications 380,431, 380,851 [both in Group VI], 548,019, 592,676, 600,058, 748,745, 748,750 and 805,827 are referred to.
|
en
|
GB-165730-A
|
GB-1761821-A
|
GB
|
A
|
A
| null | 1921-06-28
| null |
G10K1/063
| null |
Electric bell
|
en
|
165,730. Magerle, E. June 28, 1920, [Convention date]. Electromagnetic interrupters.-In a bell of the solenoid type, the core 3 is a loose fit in the metal sleeve 8 with which it is normally wedged into good contact by the pointed end 13 resting on the ball 14 carried by a contact spring. The clapper 11 strikes the bell 21 through an aperture 19 in the bell casing when the solenoid is energized, and the necessary make-and-break occurs on the ball 14. Two balls 14 on the yoke of an arched spring may be used. The sleeve 8 is in metallic contact with the bracket 5, and is insulated by a washer 9 from this bracket 10.
|
en
|
GB-460624-A
|
GB-1764036-A
|
GB
|
A
|
A
| null | 1936-06-25
| null |
A45C7/00
| null |
Improvements in or relating to collapsible cardboard boxes
|
en
|
460,624. Boxes. TRIGGS, W. W. (Kunstanstalt Etzold & Kiessling Akt.-Ges.) June 25, 1936, No. 17640. [Class 18] A box simulating a purse or handbag is formed from blanks b, i constituting the body and lid, and a girdle member c. The girdle c is hinged to the rear edge of the bottom of the body b and is provided with flaps f turned inwardly when the box is erected. The flaps f are locked in positions by lateral extensions d<1> of side flaps d of the body. Locking tongues e on the front edge of the blank engage a slot h in the girdle member c, and the lid i is held closed by a flap m which is inserted between two layers forming the bottom of the body. Handles n are provided for carrying the box. In a modification, the handles n are replaced by a single carrying loop arranged on the outside of the bottom.
|
en
|
GB-668735-A
|
GB-1765249-A
|
GB
|
A
|
A
| null | 1949-07-04
| null |
C01D17/00
| null |
Improved method of extracting potassium from dilute solutions
|
en
|
Potassium is extracted from solutions containing it in small quantities, e.g. sea water, &c., by treating the solution with a solid highly nitrated secondary aromatic amine and a base, e.g. lime or ammonia, precipitating thereby a slightly soluble potassium salt of the amine, separating it and treating with an acid, recovering thereby the amine in solid state for re-use, and a comparatively strong solution of the potassium salt. Amines specified are dipicryl amine, and various highly nitrated chloro-, methyl-, methoxy-, and ethoxy-diphenyl amines. Specification 605,694 is referred to.ALSO:Potassium is extracted from solutions containing it in small quantities, e.g. sea water &c. by treating the solution with a solid highly nitrated secondary aromatic amine and a base, e.g. lime or ammonia, precipitating thereby a slightly soluble potassium salt of the amine, separating it and treating with an acid, recovering thereby the amine in solid state for reuse, and a comparatively strong solution of the potassium salt. A pH of 7-8 should be maintained during the aminate precipitation. The reaction mixture passes to a thickener, and the clear liquor therefrom is treated with acid for the removal of small quantities of dissolved precipitating agent, followed by filtration in sand filters and if desired a charcoal filter, and deacidification with calcium carbonate. A small quantity of acid is added to the material from the thickener to reduce the pH to about 3, and the fine amine crystals produced and the fine aminate crystals, say, 50 per cent by weight of the total, are returned to the precipitating tank. The coarse crystals are treated with acid, e.g. nitric acid, and the amine precipitated is finally suspended in say, sea water for reuse. The bicarbonate content of the sea water may be reduced prior to treatment. Amines specified are dipicryl amine, and various highly nitrated chloro-, methyl-, methoxy-, and ethoxy-diphenyl amines. Specification 605,694 is referred to.
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en
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GB-942587-A
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GB-1767161-A
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GB
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A
|
A
| null | 1961-05-15
| null |
C08G77/26
| null |
A process for the preparation of aminoalkylsiloxane co-polymers
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en
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942,587. Polyaminoorganopolysiloxanes. DOW CORNING CORPORATION. May 15, 1961 [May 13, 1960], No. 17671/61. Headings C3R and C3T. [Also in Division B2] Polyaminoorganopolysiloxanes are prepared by reacting (1) at least one compound selected from (A) silanes of formula R<SP>11</SP>x(Zn R<SP>1</SP>)Si (OR) 3-x , where x is 0, 1 or 2; each R is an alkyl radical of less than 4 carbon atoms; R<SP>1</SP> is an aliphatic hydrocarbon radical containing 1 or more than 2 carbon atoms and having a valency of n+1 where n is an integer; Z is a monovalent radical attached to R<SP>1</SP> by a carbon nitrogen bond, is composed of carbon, nitrogen and hydrogen, and contains at least 2 amine groups; the ratio of carbon atoms to nitrogen atoms in - R<SP>1</SP>Zn being less than 6:1; and each R<SP>11</SP> is a monovalent hydrocarbon radical free from aliphatic unsaturation, and (B) partial hydrolysates formed by mixing (A) with up to 60% of its theoretical equivalent of water, with (2) at least one organosiloxane of average general formula R<SP>111</SP>y Si(OH) m O 4-m-y , where each 2 R<SP>111</SP> is a monovalent hydrocarbon radical or halogenated monovalent hydrocarbon radical, m has a positive average value not greater than 2, y has an average value from 1 to 2À5, and y+m has an average value not greater than 3, by contacting (1) and (2) in liquid phase in an amount such that there is at least 10% by weight of (1) calculated on the combined weight of (1) and (2). The copolymers may be reacted in liquid phase with an acid to give the corresponding salts. The copolymers are preferably prepared in an organic solvent, and any unreacted -OR groups in the product may be hydrolyzed. Examples are given some of which describe the preparation of compounds (1)(B) and (2). Uses: The polyaminoorganopolysiloxanes and their salts may be used as coating, impregnating and laminating resins, as emulsifying agents for polysiloxane liquids, as modifying agents for alcohol-soluble phenol-formaldehyde laminating varnishes, as curing agents for polysiloxane coating resins and in aqueous solutions or dispersions as sizing agents for glass and fibre textiles. Specifications 671,579, 762,819, 791,370, 872,138, 889,001 and 942,586 are referred to.
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en
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GB-370263-A
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GB-1768931-A
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GB
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A
|
A
| null | 1931-06-18
| null |
C02F5/08
| null |
Improvements in the treatment of water for boilers and the like
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en
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370,263. Preventing incrustation. BUCKLE, E. A., 39, Victoria Street, London. June 18, 1931, No. 17689. [Class 123 (i).] A composition for preventing incrustation in boilers comprises a mixture of a soluble alkali compound such as sodium carbonate, a chemical indicator such as phenolphthalein with or without a colloid such as starch.
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en
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GB-354910-A
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GB-1773730-A
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GB
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A
|
A
| null | 1930-06-07
| null |
B63H25/38
| null |
Improvements in or relating to rudders
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en
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354,910. Ships' rudders. WAGNER, R., 105, Bismarckstrasse, Hamburg, Germany. June 7, 1930, No. 17737. [Class 114.] In rudders of unsymmetrieal section adapted to utilize the twist of a screw propeller race the rear and front edges are located in the central plane of the ship while the upper and lower halves curve in opposite directions between said edges. The rudder 1 has its leading edge 3 and following edge 4 in the central plane of the ship, and upper and lower sections as III, III<1> are curved as indicated by the curved centre lines 5, 5<1> with the maximum offset at the level of the propeller axis. The rudder is formed by a frame 6, 7, located in the central longitudinal plane and upon which the plating is fixed to give the required profile. Specification 278,357, [Class 114, Ships &c., Propelling &c.], is referred to.
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en
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GB-377673-A
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GB-1781032-A
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GB
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A
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A
| null | 1931-04-22
| null |
B61L3/12
| null |
Improvements in or relating to train control systems
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en
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377,673. Train control and cab signalling apparatus. ASSOCIATED TELEPHONE & TELEGRAPH CO., 1033, West Van Buren Street, and HUDD, A. E., 947, West Van Buren Street, Chicago, U.S.A. April 22, 1931, Nos. 17810 and 17811/32. Divided on 377,702. [Class 105.] In a train control and cab signalling system a manual re-setting device for the restoration of the receiver device which is operated directly from the track to initiate a braking action is rendered ineffective by a speed-controlled device unless the train speed is below a certain limit. Figs. 1 and 2 (17810/32) show a centrifugal valve device mounted on the wheel axle and comprising a chamber 30 with a port 14 closed by a pivoted weight 11 which at a predetermined train speed moves outwards against the action of a spring 9 to open the port 14 and thereby to vent the piping 32, 34 so that depression of a re-setting plunger 13 will be ineffective to set up air pressure for the actuation of a diaphragm by which an armature 33 of a magnetic receiver relay 18 is normally restored. The armature restoration may be effected by a lug on a spindle rocked by the action of the diaphragm. Fig. 10 (17811/32) shows the centrifugal valve device S applied to the control of a valve 107 which remains open after the operation and subsequent immediate restoration of a magnetic receiver relay R by appropriate track magnets. The open valve 107 gives a partial braking and a sustained operation of the horn 104 both of which can be cancelled, if the train speed is below the required limit, by operating the plunger 120 to actuate the diaphragm 105 and so to re-close the valve 107. The valve 107 is opened by the spindle 112 of a main train pipe venting valve 113 which is opened when the magnetic receiver relay R is operated but which is closed when the relay R is restored, as at a caution signal. At a danger signal the relay R is not restored so that the main valve 113 remains open to give a full brake application and due to the large opening of valve 113 the pressure in the piping 114 immediately reaches atmospheric so that the horn 104 is only sounded momentarily. The track magnets comprise permanent and electromagnets arranged as described in Specification 377,702. Specifications 351,039, 351,071, 351,072, and 353,502 are referred to.
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en
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GB-788854-A
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GB-1788554-A
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GB
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A
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A
| null | 1954-06-18
| null |
E21D21/00
| null |
Improved bolt means for securing articles against wall and other surfaces
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en
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788,854. Anchor-bolts. HILL PORTER (NEWCASTLE), Ltd, and TALBOTT, A. C June 23, 1955 [June 18, 1954], No. 17885/54. Class 89(1) An anchor-bolt, e.g. for mine-roofs, comprises a screwed-rod 2, Fig. 1, with a head 2a and a number of eliptical washers 3 spaced apart by sleeves 4. The lowermost washer is supported obliquely by a tube 5 during insertion of the bolt into a bore 1, the tube being turned and the rod pulled to cause an initial biting of the washers into the bore-wall, whereafter the tube is removed and a nut 9 tightened. The tightening may be continued until all the washers lie at right-angles to the rod-axis. In a modification, the head 2a is replaced by a nut and the nut 9 by a cap-nut. In another modification, the washers 10, Fig. 7, are initially bent, and subsequently flattened, by tightening the nut, to bite into the bore-wall. In a further modification, part-spherical washers are used.
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en
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GB-706552-A
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GB-1789950-A
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GB
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A
|
A
| null | 1950-07-18
| null | null |
HOWLETT JOHN
|
Manufacture of acrolein
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en
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Acrolein is manufactured by a process which comprises passing a mixture of propylene and molecular oxygen-containing gases at elevated temperatures in the presence of elementary selenium in the reaction zone successively over a contact material comprising copper oxide distributed on activated alumina which has been given a preliminary heat treatment at temperatures above 950 DEG C. and a contact material comprising copper oxide distributed on activated alumina which has been given a preliminary heat treatment between 800 DEG and 900 DEG C. The less active and more active contact materials may be arranged in one reactor tube or separately in two reactor tubes in series. The proportion of olefine employed in the reaction mixture is preferably less than that which corresponds to the lower explosion limit. Air may be employed for the oxidation or oxygen with inert diluents such as steam or carbon dioxide may be used. Comparative tests are carried out, one using a uniform contact material and the other using two contact materials in p accordance with the invention. In an example, activated alumina granules are impregnated with copper oxide by immersion in aqueous copper nitrate, drying and heating. One part is heat-treated at 850 DEG C. and the other at 1000 DEG C. and a propylene-air mixture with selenium is passed over the heated contact materials arranged in series with the less active material first. Specifications 625,330 and 655,210 are referred to.
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en
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GB-204402-A
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GB-1792622-A
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GB
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A
|
A
| null | 1922-06-29
| null |
E03C1/32
| null |
Improvements relating to pedestals for lavatory basins
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en
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204,402. Howson, R. G. June 29, 1922. Lavatory basins.-The top of a pedestal A is shaped as shown to receive and support the bottom of an ordinary basin a. A clamping bar f is provided to secure the basin in position.
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en
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GB-929263-A
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GB-1794658-A
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GB
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A
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A
| null | 1958-06-05
| null |
H04N5/228
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HOLMES PHILIP LESLIE
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Improvements relating to charge storage pick-up tubes
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en
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929,263. Cathode-ray tube circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. Sept. 7, 1959 [June 5, 1958], No. 17946/58. Class 40 (7). A non-linear feed-back path is provided between the signal electrode and a beam intensity control electrode of a cathode potential stabilized pick-up tube to reduce the variation in the " restoration potential " (i.e. the lowest potential which the target reaches in equilibrium) which occurs when the light intensity of the object varies. Fig. 2 shows the (non-linear) relationship between the restoration potential V<SP>1</SP>(s) and the potential swing S at the target of the tube and to correct for this an amplifier 9 (Fig. 1) having a suitable non-linear characteristic is connected in a feed-back path, including a fixed gain pre-amplifier 8 and a levelling clamp circuit 10 ... 12, between the signal electrode 2 and the cathode 5 of the pick-up tube 1. The amplifier 9 provides positive feed-back and the gain, which varies from a relatively high-level to a relatively low-level for signals produced by an increasing light intensity, is so offset by the variation in gain of the pick-up tube (which varies directly with light intensity) that the product of the two gains is less than unity for all light levels. Oscillation does not, therefore, occur. The invention, which is applicable to image type tubes and tubes of the photo-conductive type, is stated to produce a substantial reduction in discharge lag without causing either loop or discharge initiability. The non-linear amplifier 9 may employ a cathode-ray tube in which the inputsignal causes the beam to traverse a suitably shaped aperture to produce an output signal having the desired non-linear relationship to the input signal.
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en
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GB-357130-A
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GB-1795330-A
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GB
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A
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A
| null | 1930-06-11
| null |
F41A3/72
| null |
Improvements relating to automatic fire-arms
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en
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357,130. Automatic rifles. KIRALY, P. VON, 12, Kende U, Budapest, and SCHWEIZERISCHE INDUSTRIE - GES., Neuhausen, Schaffhausen, Switzerland. June 11, 1930, No. 17953. Convention date, June 12, 1929. [Class 119.] In an automatic firearm having a sliding barrel and a breech-block locked by being tilted, the slide 8 which effects the tilting is arranged at the side of the breech-block and forms a lateral guide therefor. In the automatic rifle shown, the extension 2, Fig. 1, of the barrel 1 is provided with ribs 4 guided within arms 23, Fig. 7, of a casing 11. The breech-block 5 is guided between the extension 2, a part 20 of the stock and the member 8 which is adapted to slide rearwards independently of the barrel. The slide 8 has projections 9, 10 which engage with inclined surfaces on the breech-block and effect the tilting and the sliding movements thereof. In the locked position, the rear end of the breech-block is tilted upwards by the projection 10 and engages with the end face 3 of an aperture in the barrel extension 2. The casing 11 is slidable longitudinally and is normally locked to the stock 20 by an arm 17, Fig. 9, of a handle 12 pivoted to the casing, which arm is adapted to engage with a projection 22 on the stock. The handle 12 also actuates a pivoted lever comprising an arm 14 which normally engages with a tooth 15 on the stock, and a tooth 24 which is adapted to be moved into engagement with a recess 19 in the breech-block when the handle 12 is moved to retract the casing 11. A projection 18 on one of the arms 23 is adapted to co-operate with a projection on the member 8. Thus, the casing 11, the breech-block 5, and the member 8 may be retracted together to open the breech closure by hand. On firing, a long rearward movement is imparted to the member 8 by a lever 35, Fig. 11, against which strikes a post 34 on the recoiling barrel. A forward extension 39 of the member 8 is engaged by a spring 40 which it compresses on recoiling and which is adapted to return it to its forward position. To prevent accidental unlocking of the casing 20 on firing, the trigger 30 is provided with an upwardly extending arm 31 which, when the trigger is pulled, projects through a recess in the casing and locks the arm 14.
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en
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GB-600719-A
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GB-1798944-A
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GB
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A
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A
| null | 1944-09-20
| null |
C07D499/16
| null |
Improvements in or relating to the production of sodium-penicillin
|
en
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Crystalline sodium penicillin is prepared by crystallizing a partially purified amorphous sodium penicillin (e.g. the product of Specification 593,691) from an aliphatic alcohol having not more than six carbon atoms in the molecule (e.g. methanol or ethanol), advantageously by precipitation of the crystals from the alcoholic solution by the addition of an alcohol-miscible organic non-solvent for sodium penicillin (e.g. ethyl acetate or acetone). The product may be used for the preparation, in substantially pure form, of penicillin salts of other metals, such as the calcium salt (e.g. by acidifying an aqueous solution of the sodium salt, extracting with ether and re-extracting with an aqueous solution of calcium hydroxide or an aqueous suspension of calcium carbonate), of free acid penicillin (e.g. by acidifying an aqueous solution of the sodium salt with dilute phosphoric acid, extracting with ether, drying the extract and evaporating in vacuo) or of penicillin esters (e.g. by treating the foregoing dried ethereal extract with a diazoalkane, e.g. diazomethane).
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en
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GB-384590-A
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GB-1811532-A
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GB
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A
|
A
| null | 1932-06-27
| null |
F01L5/04
| null |
Improvements in or relating to valve mechanism of internal combustion engines
|
en
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384,590. Valves. McMILLAN, J. A. and HOLMES, R. W., 181, Botsford Street, Moncton, New Brunswick, Canada. June 27, 1932, No. 18115. [Class 7 (vi).] In a four-stroke multicylinder engine in which each pair of cylinders is provided with a pair of piston valves 18, 19, the former controlling the inlet to both cylinders, and the latter the exhaust from both, the valves reciprocate within ported liners 24. Each valve is provided with two ports 26 at different levels, one for each cylinder.
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en
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GB-1244474-A
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GB-1819570-A
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GB
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A
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A
| null | 1970-04-16
| null |
B41J1/26
| null |
Printing cam
|
en
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1,244,474. Selective printing. CREED & CO. Ltd. 16 April, 1970 [24 April, 1969], No. 18195/70. Heading B6F. In a printer of the kind having a continuously rotating set of type-levers on a basket, the selected lever 2 to effect impression is guided up to impact position by a cam such that it counters the normal tendency of the lever to bend sideways in the direction of rotation so that the outer end 2a of the lever hits the platen 7 in an unbent attitude.
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en
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GB-978520-A
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GB-1832962-A
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GB
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A
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A
| 1011-06-02
| 1962-05-12
| null |
C07C45/34
|
NEWMAN FRANK CHRISTOPHER
|
Catalytic vapour phase oxidation of organic compounds
|
en
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Organic compounds are subjected to a process of vapour phase oxidation with molecular oxygen, which includes ammoxidation, by passage at elevated temperature over a bed of granular catalyst comprising (i) a mixture of antimony oxide with tin oxide and/or (ii) an oxygen containing compound of antimony and tin, especially antimony tetroxide in combination and/or admixture with stannic oxide, wherein at least a portion of the catalyst bed is diluted with granules of a solid inert material, e.g. a refractory material, glass beads or ball hearings, preferably a material of granular form having a particle size and density similar to that of the catalyst. Concentrations by volume, of up to 80% of the diluent may be used, 30 to 60% are especially favoured, and a modification of the process using several beds in sequence, each bed containing a different concentration of diluent is part of the invention. The diluent concentration in any bed, in the sequential process, is less than in any preceding bed and the last bed may be undiluted. The process is applicable to the conversion of methanol with oxygen and ammonia to hydrogen cyanide.ALSO:Organic compounds are subjected to a process of vapour phase oxidation with molecular oxygen, which includes ammoxidation, by passage at elevated temperature over a bed of granular catalyst comprising (i) a mixture of antimony oxide with tin oxide and/or (ii) an oxygen containing compound of antimony and tin, especially antimony tetroxide in combination and/or admixture with stannic oxide, wherein at least a portion of the catalyst bed is diluted with granules of a solid inert material, e.g. a refractory material, glass beads or ball bearings, preferably a material of granular form having a particle size and density similar to that of the catalyst. Concentrations by volume, of up to 80% of the diluent may be used, 30 to 60% are especially favoured, and a modification of the process using several beds in sequence each bed containing a different concentration of diluent is part of the invention. The diluent concentration is any bed, in the sequential process, is less than in any preceding bed and the last bed may be undiluted. The process is applicable to the following: conversions; propylene to acrolein and/or acrylic acid, or acrylonitrile; isobutene to methacrolein and/or methacrylic acid, or methacrylonitrile; acrolein or methacrolein to acrylic or methacrylic acids or the nitriles; butene and methylbutene to butadiene and isoprene respectively. Methanol may be converted with oxygen and ammonia to hydrogen cyanide. The two examples, which also contain comparative data outside the scope of the invention describe the conversion of propylene to acrolein and the ammoxidation of propylene to acrylonitrile.ALSO:Olefins are subjected to a process of vapour phase oxidation with molecular oxygen, to form diolefins, by passage at elevated temperature over a bed of granular catalyst comprising (i) a mixture of antimony oxide with tin oxide and/or (ii) an oxygen containing compound of antimony and tin, especially antimony tetroxide in combination and/or admixture with stannic oxide, wherein at least a portion of the catalyst bed is diluted with granules of a solid inert material, e.g. a refractory material, glass beads or ball-bearings, preferably a material of granular form having a particle size and density similar to that of the catalyst. Concentrations by volume, of up to 80% of the diluent may be used, 30 to 60% are especially favoured, and a modification of the process using several beds in sequence, each bed containing a different concentration of diluent is part of the invention. The diluent concentration in any bed, in the sequential process, is less than in any preceding bed and the last bed may be undiluted. The process is applicable to the following conversions: butene and methylbutene to butadiene and isoprene respectively.
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en
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GB-140477-A
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GB-1840416-A
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GB
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A
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A
| null | 1916-12-22
| null |
F21V7/10
| null |
Improvements in and connected with lamp and gas shades and reflectors and the like
|
en
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140,477. Willetts, G. F. Dec. 22, 1916. Shades; reflectors.-Cardboard or like lamp or gas shades or reflectors &c. are secured in shape by overlapping the edges 1 and stitching the edges together as at 2. To prevent the stitches from becoming undone, the stitching may be reversed in direction at either end, or, as shown, at both ends; or it may be continued to overlap at the end of the seams.
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en
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GB-1442593-A
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GB-1845772-A
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GB
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A
|
A
| null | 1972-04-20
| null |
D04H13/00
| null |
Filter material
|
en
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1442593 Tobacco smoke filter BRITISH ROPES Ltd 25 June 1973 [20 April 1972] 18457/72 Heading A2C [Also in Divisions B4 and B5] A cigarette filter comprises a fibrillated polyolefin film. The polyolefin film has a thickness of 5Á to 25Á and has a substantial number of free ends formed by severing the interconnecting strands of the fibrillated film.
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en
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GB-418691-A
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GB-1849933-A
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GB
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A
|
A
| null | 1933-06-29
| null |
B65B1/24
| null |
Improvements relating to the packing of tea and other like materials
|
en
|
418,691. Packeting tea &c. PHILLIPS ENGINEERING CO., Ltd., and BROOKE, N., Evelyn Road, Sparkhill, Birmingham. June 29, 1933, No. 18499. [Class 94 (i).] Packets of tea or other material are subjected before closing to a lateral squeeze first at one pair of opposite edges and then at the other pair of opposite edges, the packets being shaken after each squeezing operation. A number of packet platforms s and squeezing plates e are mounted at intervals on a conveyer comprising upper and lower pairs of chains a, b joined by vertical bars c on which the arms d of the plates e are pivoted. Between adjacent rods c one pair of upper and lower chains carry a pair of rods p supporting a bracket q in which the stem r of the platform s slides, a rack on the stern meshing with a toothed quadrant t controlled by a roller u engaging a track bar v. The rods p also carry arms w for holding a packet on the platform, the movement of the arms being controlled by the engagement of rollers with track bars y, 4. The squeezing plates e operate in pairs and are controlled by the engagement of rollers on their arms d with track bars f, f<1>. The packet first rests freely on the platform s in its lowest position. As the squeezing position is approached, the platform is raised under the action of the bar v and immediately afterwards the arms w close momentarily to centralize the packet on the platform. The cams 7 on the bars f then cause one pair of plates e to apply a squeeze to one pair of opposite edges of the packet, after which the platform drops and applies a jolt. The second squeezing operation takes place in a similar manner, the cams 9 on the bars f<1> causing the other pair of plates e to operate on the other pair of opposite edges of the packet. The mechanism may be suitably co-ordinated with bag-making and filling mechanism.
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en
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GB-1389786-A
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GB-1853473-A
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GB
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A
|
A
| null | 1973-04-17
| null |
B07C5/36
| null |
Device for classifying components particularly midget components
|
en
|
1389786 Shoots P A SHEVINOV 17 April 1973 18534/73 Heading B8S A device for classifying components delivered to a testing unit 1, in accordance with a measured parameter thereof, comprises a shoot 12 movable in response to a signal corresponding to the parameter measured, to deliver the component once discharged from the unit 1 into a stationary shoot 3, to one of a plurality of receiving cups 17. The shoot 12 is coupled to the shoot 3 by a coil spring 15, the top of the shoot 12 including a circular collar 13 received in a groove 10 in a probe 9 fastened to the lower end of the shoot 3. Radial slots 11 in the probe house lever arms 14, which under the action of electro-magnets 5, are pivoted to tilt the shoot 12 into a required position, the particular electro-magnets 5 operated being controlled by the signal from the testing unit 1.
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en
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GB-217075-A
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GB-1854323-A
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GB
|
A
|
A
| null | 1923-07-18
| null |
D21D5/02
| null |
Improvements in machines for straining paper-pulp
|
en
|
217,075. Watford Engineering Works, Ltd., and Paramor, J. July 18, 1923. Non-rotary straining machines with jigging or pulsating elements.-A flat or trough-shaped strainer a is suspended by straps c which embrace eccentrics d on a rotating shaft e so that all portions of the straining surface receive a uniform vibratory motion. The flow may be in either direction through the strainer. The strainer shown is arranged for inward flow and provided with a flexible, and readily disconnected, outlet pipe g. For cleansing the strainer can be turned about the eccentrics as pivots to the upper position indicated in Fig. 2. The strainer vat is provided with an overflow notch and sluice for the discharge of scum.
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en
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GB-228849-A
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GB-1861524-A
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GB
|
A
|
A
| null | 1924-08-05
| null |
C07D213/16
| null |
Improvements in or relating to insecticides
|
en
|
An insecticide, which consists of a mixture of isomeric dipyridyls, is prepared by heating sodium with an excess of pyridine, then passing dry oxygen or air through the cooled product until the colour turns brown, and finally removing the excess of pyridine by distillation.
|
en
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GB-204019-A
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GB-1864923-A
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GB
|
A
|
A
| null | 1923-07-19
| null | null | null |
Improvements in and relating to automatic electric substation control equipments
|
en
|
204,019. British Thomson - Houston Co., Ltd., (Assignees of Whiting, M. A.). Sept. 15, 1922, [Contention date]. Motor-generators; motors, controlling.-In systems for starting motor-generator sets in automatic substations, a synchronous motor 2, driving a continuous-current generator 3, is speeded up from rest, starting as an induction motor, by successively connecting it to alternating-current mains through a reduced-voltage switch 4 and a full-voltage switch 6, a separately excited field taking current from the generator 3 through an automatic switch 9 when a certain speed has been attained. The generator field 11 is built up under the control of a resistance relay 16. The operations are started by the closure of a switch 20, which energizes a magnet 33 to close the reduced voltage switch 4. When a certain excitation of the motor field is reached, a relay 36 causes the reduced-voltage switch to open and the full-voltage switch 6 to close. When the rising voltage of the generator 3 sufficiently exceeds the voltage of the load circuit 13, connection between them is made by an electromagnetic switch 14 under the control of a differential relay 45 and a polarized relay 48. In case the field of the motor 2 fails to build up, thermal devices actuated by the continued flow of current through the voltage reducing transformer 5 open switches 28<a>, 28<b>, which disconnect the set completely. The set can be disconnected under manual control by opening the switch 20. Arrangement of known kind may be added to the system for protecting it against short-currents and overloads. In place of manual control completely automatic control may be installed.
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en
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GB-653966-A
|
GB-1879548-A
|
GB
|
A
|
A
| null | 1948-07-13
| null |
H04B7/155
|
TREADWELL CYRIL GORDON
|
Improvements in or relating to the automatic replacement of defectiye repeating or receiving equipment in high frequency electric communication systems
|
en
|
653,966. Electric indicating systems. STANDARD TELEPHONES & CABLES, Ltd. July 13, 1948, No. 18795. [Class 40 (i)] [Also in Group XL (c)] In a communication system, in which the normal equipment at a repeater or receiver station is replaced by spare equipment if an abnormal reduction in signal occurs, means are provided to prevent substitution except when the reduction is caused by a defect at the said station. The arrangement is suitable for use in a system having a chain of repeater stations to avoid replacement occurring at stations subsequent to that at which the defect occurs. Fig. 2 shows a repeater station with a receiving aerial 6, normal repeater equipment 8 and transmitting aerial 7. The signals transmitted, which may be of the multiplex pulse type, are received by monitor receiver 10 and passed to a pulse integrating circuit 12 which controls the operation of a relay B. The synchronizing pulses only of the multiplex system are selected by integrating circuit 13 and used to control relay A. The contacts of relays A and B control the operation of relays C and D, so that with normal signals, relays A and B are operated and C and D are normal. When the signals from aerial 7 cease, relays A and B release, and relay D operates, which causes an auxiliary oscillator 16 to be energized to supply signals to the input of the normal repeater equipment. The signals from oscillator 16 are similar to the normal channel pulses but do not include the synchronizing pulse, so that provided there is no defect in the local repeater equipment, relay B again operates. Relay C is of the slow operate type, so that this relay does not have time to operate if relay B operates as above, in response to signals from the auxiliary oscillator. If the fault is in the local equipment however, relay B will remain unoperated and after a delay, relay C operates, the contacts of which disconnect the auxiliary oscillator and replace the normal equipment 8 by the spare equipment 9. A third contact of relay C holds this relay operated until manually released by switch 35 when normal conditions are restored. The operating time of relay C at each station is made slower than that of the relay D, and the operating times of the relays D at different stations along the chain are progressively increased, so that relays C and D do not have time to operate, at stations subsequent to that at which the fault occurs. The substitution of spare equipment at the initial transmitter may be effected by using relays B and C, but relays A and D, and the auxiliary oscillator 16 are not required in this case. At the final receiver, the demodulated output of the combined channels is applied to integrating circuits 12 and 13 the monitor receiver 10 not being required. Means are also provided at the final receiver (Fig. 4), to indicate at which station the fault has occurred, comprising a pointer 41 which is driven by a motor 42 which is energized under the control of relay B. The position of the pointer indicates the delay which occurred before the appropriate auxiliary oscillator operated, and since the stations along the chain have progressively increasing delay times, this may be used to indicate the faulty station. The pointer 41 mechanism has a second pointer 44 associated with the first, which remains at the indicated point, while the pointer 41 is restored to its normal position by a spring when a clutch 43 releases. The clutch 43 releases when relay A operates, and this is an indication that substitution has been effected.
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en
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GB-250446-A
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GB-1882525-A
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GB
|
A
|
A
| null | 1925-07-24
| null |
E04B1/41
| null |
Improvements in means for securing hangers and like devices to reinforced concrete structures
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en
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250,446. Armstrong, J. J. V., (Bauindustrie Akt.-Ges). July 24, 1925. No Patent granted (Sealing fee not paid). Supporting pipes and tubes.-A bolt conduit or channel c for use in securing pipe and cable hangers and like devices to reinforced concrete structures and beams is made with a swallowtail cross-section having parallel sides a at the mouth, and transverse anchor plates r are secured thereon by wedges u. The plates r bear on the main bars e and are further supported by bars k which pass through loops on the stirrups d and engage holes or notches in the plates. The bolts have a square neck b and flared head.
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en
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GB-531318-A
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GB-1883739-A
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GB
|
A
|
A
| null | 1939-06-28
| null |
H04M1/68
| null |
Improvements in and relating to electric communication systems
|
en
|
531,318. Secret transmission. TELEPHONE MANUFACTURING CO., Ltd., and PADDLE, L. H. June 28, 1939, No. 18837. [Class 40 (iv)] A subscriber's line L over which normal communication can take place from an instrument NP is associated, when the handset of a second instrument SP is lifted, with secrecy apparatus SE which may be of the kind described in Specification 511,420. To enable a change to be made from normal to secret transmission without releasing the exchange apparatus, cradle springs 2 of the normal instrument are arranged to complete a momentary circuit when the handset is replaced for a relay 8 which bridges the line at 16 and locks up over a thermal switch which unlocks it after a suitable interval. Meanwhile the other handset will have been removed and the line will be bridged in the set SE.
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en
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GB-793556-A
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GB-1886855-A
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GB
|
A
|
A
| null | 1955-06-29
| null |
H01L21/18
| null |
Improvements in or relating to processes for the production of sintered bodies
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en
|
A pure fused body of silicon is produced by electrically heating silicon in powdered form in an electrically non-conductive heat-resistant container in vacuo or in a protective gas atmosphere so as to form a sintered body, removing the sintered body from the container, and subjecting to a zone melting process. The protective gas may be argon or a decomposable gaseous silicon compound, e.g. SiHCl3 or SiCl4, which may be in admixture with hydrogen. Heating may be by an induction coil or by passage through the powder of a direct or alternating current. As shown, the vessel comprises a vertical quartz tube formed in two parts 2, 3 which are held together by a few fused points and which can be readily separated. Tube 2, 3 is enclosed by a further quartz tube which may be evacuated or filled with protective gas via pipe 8. An induction heating coil 9 surrounds tube 5 and may be moved upwards or downwards at 1-10 mm/min. Heating is initiated in a short fused rod 17 of silicon. If the rod is sufficiently impure, it may be directly heated by the induction heating coil. If the rod is pure, however, it must be indirectly heated, e.g. by means of a radiation heating element 18 of Mo or W which is itself heated by the induction heating coil. In a modification (Fig. 2, not shown) powder is confined in a horizontal tube under pressure by means of two graphite plates which act as electrodes for the passage of an electric current. The current may be maintained constant by means of a resistance. Radiation heating may initially be employed. A protective gas is passed through the powder in the tube.
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en
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GB-705905-A
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GB-1891550-A
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GB
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A
|
A
| null | 1950-07-28
| null |
C21C5/52
| null |
Improvements in preparation of metals and alloys at very high temperatures and products obtained thereby
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en
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705,905. Making and refining alloys; refining iron and other metals. SOC. ANON. DE COMMENTRY FOURCHAMBAULT & DECAZEVILLE. July 28, 1950 [Aug. 16, 1949], No. 18915/50. Classes 72 and 82 (1) [Also in Group XII] In the treatment of metals and alloys, the metal bath, with or without other constituents added thereto during the treatment, and the floating slag are subjected, inside a rockable electric furnace with a refractory lining, to a temperature of 1800-2200‹C. to produce exo-thermic reactions which are carried to completion by blowing a gas into the molten metal. The furnace may be of the resistance or single- or 3-phase arc type, whilst the gas -may be ordinary or super-oxygentated air, or industrial or pure oxygen. It may be used for the production of a protective atmosphere, gasification, degasification, decarbonization, or for controlling the composition of slags, metals, steels or alloys, particularly those containing less than .02 per cent. of carbon. In the form shown, a rotary cylindrical single-phase electric arc furnace 1 has cradles 2 whereby it may be rocked on rollers 3, and a refractory lining 21 providing an ellipsoidal charging chamber 20, the ratio between the minor and major axes of which is approximately..8. The lining 211 may have a base of spinel, zircon, mullite or of magnesia as described in Specifications 608,544 and 608,790, [both in Group V]. Electrodes 5 arranged along the minor axis of the ellipsoid, and along the axis of rotation of the furnace, are clamped to carriages 7 running on rails 8 for rapid entry into and withdrawal from ports in the furnace. With the electrodes withdrawn, gas for blowing is introduced by means of pipes 16, wind boxes 16a, and nozzles near the casting hole 16b, and the gas and pulverulent solids to be withdrawn are exhausted through the furnace ports by means of sleeves 11 into electrostatic separators or cyclones 12 on carriages 13 rolling on rails at right angles to rails 8, said exhaust means including valves to control the degree of pressure within the furnace.
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en
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GB-1362462-A
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GB-1892972-A
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GB
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A
|
A
| null | 1972-04-24
| null |
H02P23/16
| null |
Speed controlling arrangements
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en
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1362462 Automatic control of speed DAIMLER-BENZ A G 24 April 1972 [26 April 1971] 18929/72 Heading G3R [Also in Divisions F1 and H3-5] The speed of a machine element, e.g. a diesel engine, is controlled by a system in which a pulse signal whose frequency is proportional to speed is shaped so that the pulses have uniform magnitude and duration and is then compared with a D. C, reference voltage to produce a D. C. error voltage in response to which a control stage adjusts the speed, e.g. by controlling the fuel injector. The speed is detected by a variable reluctance pick-up which has a D.C. energizing coil 11. The signals from this are fed through a capacitor to an operational amplifier whose output triggers a transistor monostable circuit supplied with a Zener stabilzed voltage. These elements are in box 13 which is fully described Fig.2, (not shown). The resulting uniform pulses are fed to box 14 as signal E1, Fig.3, where it is differentiated by 26, 27, integrated by 29, 30, subjected to low pass filtration by 21, 22 and fed to the inverting input of operational amplifier 18. An adjustable reference voltage from 20, derived from the Zener stabilized source is applied to the non- inverting input of 18 and the difference (i.e. error) forms the output E2. Because of the lowpass filter 21, 22, also feedback RC 24, 25 the operational amplifier 18 is able to directly compare the average value of pulse signal E1 with reference voltage from 20. E2 is supplied to control stage 15, where the voltage controls a relaxation oscillator comprising an operational amplifier and capacitor Fig. 4, (not shown) which produces pulses whose mark/space ratio is proportional to speed error, and these energize the fuel injector mechanism 12 against a shut-off spring. The electronic circuits may be in printed circuit form mounted in an enclosure for the injector pump. Fig.3, (not shown). A plurality of engines, each with its own control system, may be operated by the signals from one.
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en
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GB-307040-A
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GB-1906528-A
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GB
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A
|
A
| null | 1928-06-30
| null |
H04Q3/00
| null |
Circuit arrangement for telephone installations
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en
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307,040. Siemens & Malske Akt.-Ges. March 3, 1928, [Convention date]. Semi - automatic exchange systems; timecontrolling systems.-Thermal relays are employed to release a connection if neither subscriber gives a clearing signal within a gven time. The invention is described with reference to a system substantially identical with that described in Specification 302,140, comprising a number of small automatic exchanges associated with a central exchange at which the establishment of all connections within the system is controlled by a semi-automatic operator, the apparatus in each automatic exchange comprising finder-connector links AS1-LW1 and hunting switches AW1 which associate with links with the central exchange. When a called subscriber replies, the withdrawal of the plug at the central exchange causes the release of relay K which connects up a thermal relay Th1. This, on operating, connects up a further thermal relay Th2 so that after a prescribed interval relay V2 operates and releases the connection in the manner described in the above-mentioned Specification.
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en
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GB-626803-A
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GB-1909447-A
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GB
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A
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A
| null | 1947-07-17
| null |
E06B7/232
| null |
A metal trap for the exclusion of rain and wind
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en
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626,803. Draught excluders. ROBERTS, K. G. July 17, 1947, No. 19094. Drawings to Specification. [Class 20(iii)] A metal strip for application to windows for the exclusion of wind and rain has a section partly tubular in shape terminating in a vertical flange. This can be attached to the rebate of a casement window or such like by means of a second vertical flange in alignment with the first.
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en
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GB-271290-A
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GB-1913726-A
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GB
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A
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A
| null | 1926-07-31
| null |
H01H3/02
| null |
Improvements in gas lighting devices
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en
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271,290. Woods, S. J. July 31, 1926. Lighting burners by electric devices.-A rod 10 is adapted to be moved in one direction against the action of a spring 29 on opening the gas-cock 20 and be released at a predetermined point so that it is moved rapidly by the spring in the opposite direction for operating a magneto 7 in circuit with a sparking electrode 3 adjacent the burner-head 1.. The magneto shaft is connected by a ratchet clutch mechanism with the rod 10 so that it is rotated only by the return movement of the rod. The gas-cock 20 carries an arm 21, extending into a casing 14 containing a member 23 slidable on the rod 10, and normally engaging the rear end of a latch 25. The member 23 engages a pin 24 on the rod 10 and is moved forward by the arm 21 until the latter is disengaged from the latch to allow of the return movement. During the forward movement of the member 23, a cam 28 thereon depresses a lever 16 to connect wires 5, 12, connected respectively to the electrode 3 and to the magneto 7, and complete the igniting circuit. The latch 25 is pivoted and is depressed by the arm 21 against the action of a spring to engage a slot 27 in the casing 14 when the gas-cock is moved sufficient to cut-off the gas supply, the latch being locked in this position by a projection 22 on the arm 21 engaging a groove 26 on its upper surface. To re-open the gas-cock, it must first be fully closed so that the arm 21 is moved behind the latch to allow the latter to rise into its normal position. A plurality of burners may be ignited, as shown in Fig. 1, by a single rod 10 and magneto 7. The rod 10 has a disc 30 engaging a pivoted lever 31 connected to a spring-pressed piston 33 movable in a pivoted cylinder 34 immersed in oil which flows into the cylinder as the piston moves out and delays the return of the rod 10 to normal position so as to allow the link 16 to keep the circuit closed while the magneto is in operation.
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en
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GB-426241-A
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GB-1923634-A
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GB
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A
|
A
| null | 1934-06-29
| null |
E21D11/06
| null |
An improved walling or lining for mines
|
en
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426,241. Linings for mines. PARUSEL, J., 46, Oberwallstrasse, Gleiwitz, Germany. June 29, 1934, No. 19236. Convention date, July 28, 1933. [Class 85] A yielding lining or walling for mines consists wholly or partly of tar beton. The lining may be formed as a unitary whole by tamping behind a shell or it may be formed of bricks formed by pressing the beton in a hot or cold state, weak bricks being inserted between lengths of strong bricks. The beton may be reinforced with iron.
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en
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GB-674914-A
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GB-1927650-A
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GB
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A
|
A
| null | 1950-08-02
| null |
A01C17/00
| null |
Improvements in apparatus for spreading lime and the like over areas of land
|
en
|
674,914. Fertilizer distributers. MUSGROVE, F. E. Aug. 2, 1950 [May 31, 1950], No. 19276/50. Class 6(i) A lime or like spreading machine comprises a vehicle 1 fitted with a flexible mat 3 adapted to be wound on a roller 6 to move the material towards a scraper conveyer 8 which feeds the material in a finely divided state to chutes 11 where it falls on to rotary ribbed distributing discs 10. As shown the conveyer 8 and discs 10 are driven by a separate motor 9. The flexible mat is wound on to roller 6 with a continuous motion by means of double-acting pawls 25, 26 driven from the road-wheel 2 through a crank pin 17a, and acting on a ratchet wheel 27 connected to roller 6 by chain and sprocket gearing 29. A cross end 7 is mounted on the mat and ensures movement of the material towards the conveyer. The pawls 25, 26 are disengaged from the ratchet 27 by projections 31 on a shaft 30 engaging extensions 25a, 26a on the pawls 25, 26 respectively to allow the mat to be wound back to its original position by means of the winding mechanism 32.
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en
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GB-1467414-A
|
GB-1935774-A
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GB
|
A
|
A
| null | 1974-05-02
| null |
C09J167/00
| null |
Laminates
|
en
|
1467414 Laminates GENERAL ELECTRIC CO 2 May 1974 [13 June 1973] 19357/74 Heading B5N [Also in Division H5] A laminate comprises, as adhesive interlayer, a block polysiloxane-polycarbonate copolymer made by reacting (A) a halogen chain-stopped polydiorganosiloxane composed of from 5 to 200 chemically combined diorganosiloxy units consisting essentially of dialkylsiloxy units which are connected to each other by silicon-oxygensilicon linkages wherein each of the silicon atoms has two organo radicals attached thereto by a carbon-silicon bond, and (B) a hydric phenol where Z is one or more of hydrogen, a C 1-5 alkyl radical or a halogen radical, and each R is hydrogen, a monovalent hydrocarbon or a halogenated monovalent hydrocarbon radical, and phosgenating the purified reaction product. Preferred block copolymers have the average formula where n is an integer of from 1 to 1000, a is 1 to 200, b is 5 to 200, the ratio of a to b is from 0À05 to 3, d is at least 1, Y is A is hydrogen or R<SP>1</SP> si C 1-5 alkyl and R<SP>11</SP> is a monovalent hydrocarbon radical or a halogenated hydrocarbon radical. Exemplified laminates consist of: (a) glass, the block copolymer and a polycarbonate, (b) glass, the block copolymer, polycarbonate, the block copolymer and glass; (c) polycarbonate, the block copolymer, polycarbonate, the block copolymer and polycarbonate and (d) glass, the block copolymer, polycarbonate, the block copolymer and polycarbonate. In a preferred embodiment, electrically conducting wires for connection to an alarm or heating system are embedded on the block copolymer. The laminates may be made using an autoclave or a vacuum bag.
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en
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GB-613728-A
|
GB-1936046-A
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GB
|
A
|
A
| null | 1946-06-28
| null |
B21C1/12
| null |
Improvements relating to wire drawing machines
|
en
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613,728. Drawing wire. NORTON & CO., Ltd., Sir J. F., and NORTON, W. J. June 28, 1946, No. 19360. Addition to 580,389. Drawings to Specification. [Class 83 (iv)] The constant torque magnetic couplings driving the wire drawing drums of the machine described in the parent Specification are provided with a hand-adjusted regulator for the field system of each coupling, two-way switches being provided so that the regulating resistance may be short-circuited to ensure satisfactory starting without altering the setting for normal running.
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en
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GB-715127-A
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GB-1939551-A
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GB
|
A
|
A
| null | 1951-08-16
| null |
F16D55/40
|
FLETCHER ARTHUR HOLMES
|
Improvements in or relating to brake mechanisms
|
en
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715,127. Disc brakes. ROLLS-ROYCE, Ltd. Aug. 14, 1952 [Aug. 16, 1951], No. 19395/51. Class 103(1) In a disc brake the fixed plates 25, 26 and the moving plates 12, 15 are pressed together by the ram cylinder 18. The fixed cylindrical member 19 occupies the annular space between inner and outer plates and is splined to engage simultaneously both the outer and inner fixed plates.
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en
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GB-297814-A
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GB-1940228-A
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GB
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A
|
A
| null | 1928-07-04
| null |
B60R17/00
| null |
Improvements in lubricating devices for spring plates
|
en
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297,814. Graissage Alcyl Soc. Anon. Sept. 30, 1927, [Convention date]. Channels in springs.- The centre bolt 1 of a vehicle spring is provided with a lubricating groove or flat 6 communicating through channels 4, 5 with a channel 7 in a nut 2, the channel 7 being connected by a hollow screw 3 and a coupling member to a capillary conduit 11 leading from a central lubricant reservoir, as set out in Specifications 259,567, 264,182 and 269,891, [all in Class 12 (iii), Lubricators &c.]. The channels 4, 5, 7 may be filled with capillary material.
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en
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GB-1185919-A
|
GB-1950967-A
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GB
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A
|
A
| null | 1967-04-27
| null |
G03H1/00
|
OSTERBERG HAROLD
|
Microscope
|
en
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1,185,919. Holography; microscopes. AMERICAN OPTICAL CORP. April 27, 1967 [April 29, 1966], No. 19509/67. Headings G2C and G2J. A microscope wherein a hologram of a specimen 19 is made using the two beam method comprises a laser 10, a beam splitter 12 giving a reference beam 11 and an object beam 9, an objective 20 for focusing an image of the specimen, and a beam combiner 13 arranged to direct the beams 11, 9 to interfere at a film 22. Phase microscopy as well as dark-field and oblique dark-field illumination can be applied by placing a phase plate 39 at the conjugate 36 of the laser 10 for dark-field and oblique dark-field. In another embodiment, Fig.2 (not shown) prisms (40, 41) and a mirror (42) provide reference and object beams which impinge on opposite sides of the film. Other arrangements, more or less compact than that of Fig. 1, are described.
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en
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GB-791426-A
|
GB-1959656-A
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GB
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A
|
A
| null | 1956-06-25
| null | null | null |
10-(halo-benzoyl)-3,7-bis(dimethylamino)phenothiazines
|
en
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The invention comprises 10-(halobenzoyl)-3,7-bis-(dimethylamino) phenothiazines wherein the halogen is chlorine or bromine, and a method of preparing them by reacting the zinc chloride double salt of leucomethylene blue with halobenzoyl chloride in hot pyridene, pouring the reaction mixture into water to obtain a precipitate, treating the precipitate with hot alkaline solution, decanting, extracting the solid residue with hot benzene, treating the benzene solution with fuller's earth, and mixing with petroleum ether to obtain a crystalline precipitate. Products specified are those wherein the benzoyl radical is substituted as follows: 2,3-dichloro-, 2-4-dichloro, 2,5-, 2,6-, 3,4- and 3,5-dichloro-, 2,3,4-, 2,4,5-, 2,3,5-, 2,3,6-, 2,4,6- and 3,4,5-trichloro-, 2,3,4,5-, 2,3,5,6- and 2,3,4,6-tetrachloro- and pentachloro, and the corresponding bromine derivatives. A mixture of halogenated benzoyl chlorides obtained by halogenation of benzoyl chloride may also be used.
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en
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GB-920661-A
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GB-1961860-A
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GB
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A
|
A
| null | 1960-06-02
| null |
F02C9/16
|
JOHNSON CHRISTOPHER LINLEY
|
Gas turbine engine fuel system
|
en
|
920,661. Gas turbine engine fuel systems; speed governors. ROLLS-ROYCE Ltd. May 26, 1961 [June 2, 1960], No. 19618/60. Classes 57 and 110 (3). A gas turbine engine fuel system comprises in flow series a fuel reservoir 10, a centrifugal main fuel pump 14, a fuel control unit 21 for metering the flow of fuel in accordance with one or more engine variables, and a fuel circuit incorporating spill burners 110, a centrifugal circulating pump 106 being provided for circulating the fuel in the fuel circuit. A top speed emergency governor device also being provided so as to reduce the amount of fuel when the engine speed exceeds a predetermined value, the governor device being responsive to the pressure of the high pressure side of the circulating pump. Fuel delivered by the main fuel pump 14 passes through duct 18 into the chamber 20 within the control unit, the fuel then passing through a metering orifice 43, 45 before discharging from the control unit through outlet duct 63, 87. The control unit comprises a cylindrical member 27 which is axially and rotatably mounted within a bore 28 in the unit. The outer race of the ball bearing 30 in which the member 27 is mounted is connected by means of members 31, 32 to a pair of bellows 33, 34 which are disposed within a chamber 22 which is supplied with air through passage 42 which is connected to a passage 38 between restrictions 40, 41 therein, the passage 38 being connected to a supply of air at the delivery pressure P 2 of the compressor or at a pressure functionally related thereto. Each bellows 33, 34 is divided into two compartments 35, 36, the compartments 35 being evacuated and the compartments 36 being supplied with air under pressure from the passage 38 downstream of the second restriction 40. The downstream end of the passage 38 communicates by way of a hole 39 with the compressor inlet. The cylindrical member 27 will thus move axially as the pressure supplied to the passage 38 varies. The member 27 is formed with triangular-shaped apertures 43 which co-operate with an annular gap 45 to define a fuel metering orifice. The gap 45 is formed between a fixed wall and an axiallymovable and rotatable sleeve 44 which is mounted on the cylindrical member 27, the sleeve 44 having a radially-extending flange 46 to which are connected push-rods 47 which pass through apertures 26 in the wall 25. The push-rods are connected to a ring member 48 against which act the lever arms of governor weights 49, the weights being carried by a governor housing 68. The annular gap 45 will thus be varied in dependence on engine speed. The loading of the spring 54 which acts on the sleeve 44 in opposition to the governor 49 may be varied by means of the control lever 50 which adjusts the position of the cam 50<SP>1</SP>. Fuel supplied to the chamber 20 passes through the metering orifice 43, 45 to the space within the cylindrical member 27 and then discharges through outlet 63, the outlet being controlled by a cylindrical throttle member 60. The throttle member 60 is formed with an extension 61 having a flange 66 against which bear the lever arms of centrifugal governor weights 67 so that the position of the throttle member 60 is dependent on engine speed. The throttle member is also provided with two surfaces 64, 65, the pressure of the metered fuel acting on the surface 64, and the pressure of the fuel upstream of the metering orifice acting on the surface 65, so that the position of the throttle member 60 is also dependent on the pressure drop across the metering orifice. The governor housing 68 is connected by means of rods 70 to a gear 71 which is rotatably mounted on a fixed shaft 72, the gear 71 being driven from the engine by means of a compound gear 73. Rotatably mounted on the rods 70 are compound gears 74, 75, the gear 74 engaging with a fixed gear 76 mounted on the fixed shaft 72 and the gear 75 engaging with a gear 77 secured to the throttle extension 61, the gear 75 being elongated to permit axial movement of the gear 77. The throttle member 60 is connected by a rod 78 to a slider 80 whereby the cylindrical member 27 is rotatably driven. A second cylindrical member 82 is connected to the member 27 at the side thereof remote from the metering orifice, the member 82 being disposed within a chamber 83 which is connected by means of a pipe 84 to the space within the cylindrical member 27 whereby the member 27 is pressure balanced axially. The space within the chamber 83 is also connected by means of a duct 85 and solenoid valve 86 to the line 87, a restriction 88 being disposed in the duct. Fuel discharges from the control unit through the lines 63 and 87 to the emergency governor 90 which comprises a sleeve 121 disposed within a valve body 120. The sleeve is provided with ports 124 which co-operate with the annular passage 125 to which fuel is delivered by the duct 87, also with ports 126 which communicate with an annular passage 127 which communicates with the outlet pipe 91. The sleeve is rotated by means of gearing 123, 122, and is loaded upwardly by means of the spring 128. The sleeve valve is also loaded upwardly by the fuel pressure within it and downwardly by the pressure of fuel delivered by the centrifugal circulating pump 106 through the line 112. Normally, fuel passes from the line 87, through the ports 124 to the line 91, but should the engine speed exceed a predetermined value, the increase in pressure of fuel at the outlet of the pump 106 will cause the sleeve 121 to move downwardly so as to reduce the fuel supply to the spill burners 110. The governor outlet 9] communicates with the shut-off cock 92 which comprises a valve member 94 disposed within a valve body 93, the cock being shown in the " Open " position in Fig. 1. The valve member 94 comprises three reduced diameter portions 96, 97, 98, also an axial bore 95 and is movable by means of a rack and pinion 100, 101. In the " Open " position, fuel from the line 91 passes through the reduced portion 98 and discharges through the line 103 which divides into two paths 105, 107, the line 105 leading to the inlet of the circulating pump 106, fuel discharging from the pump through line 111 to the reduced portion 96 of the valve body 94 and thence through line 115 to the annular passage 116 within the spill burner 110, some of the fuel discharging through the nozzle 117, the remainder, i.e. the " spill flow " passing into the chamber 108 and returning by way of lines 107, 105 to the inlet of the circulating pump. Fuel passes also from the reduced portion 96 through line 112 to the upper side of the governor sleeve 121. When the shut-off cock is moved to the " Closed " position shown in Fig. 2, the reduced portion 98 is displaced from the inlet duct 91 and reduced portion 97 is aligned therewith, fuel from the line 91 now passing into reduced portion 97 and discharging through outlet duct 104 back to the inlet of the main fuel pump 14. Also, fuel delivered by the circulating pump 106 into the line 111 now passes into the axial bore 95 in the valve body 94 and passes through non-return valve 113 to the pump passage 114.
|
en
|
GB-732965-A
|
GB-1963251-A
|
GB
|
A
|
A
| null | 1951-08-20
| null |
B23K31/02
|
LANGFORD ROY GEORGE
|
Improvements in methods of applying a hard metal to metal parts
|
en
|
732,965. Welding by fusion. LANCASTER (LONDON), Ltd., G. K. Nov. 13, 1952 [Aug. 20, 1951], No. 19632/51. Class 83 (4). A method of applying a hard metal to metal parts comprises applying a stainless steel filler rod 50a to the part 51 which is connected to one side of a low voltage supply and applying a carbon electrode 11 to the rod, which electrode is connected to the other side of the supply. The part 51 may be a stitch cam for hosiery making machines and the filler rod may be of a columbium bearing stainless steel. In another embodiment for building up a worn area of a hosiery thread feeder 71, Fig. 3c, a carbon block 73 connected to a low voltage welding transformer is inserted in a bore of the feeder and a skin of hard metal 75 is applied by the apparatus shown in Fig. 1. The surplus metal is then ground off and the block 73 is then removed.
|
en
|
GB-499146-A
|
GB-1965637-A
|
GB
|
A
|
A
| null | 1937-07-15
| null |
C08F8/28
| null |
Polyvinyl acetal resins
|
en
|
Polyvinyl acetal resins are prepared by saponifying a polyvinyl ester, under substantially anhydrous conditions, in solution in an alcoholic de-esterifying agent in the presence of a hydrogen halide until the ester becomes water-soluble but is still soluble in the de-esterifying agent, and then causing the saponified ester to react with one or more aldehydes (other than formaldehyde) or ketones or both. The acetalization reaction also may be carried out under substantially anhydrous conditions. There are specified: alcoholic de-esterifying agents-methanol, ethanol, propanol, butanol, or mixtures thereof with each other or with 1 : 4-dioxane, benzene, methylene chloride, methyl acetate, or ethyl acetate; aldehydes-acetaldehyde, propionaldehyde, butyraldehyde, heptaldehyde, 2-ethyl butyraldehyde, 2-ethyl-hexaldehyde, furfural; ketones-acetone, methyl ethyl ketone, cyclohexanone, benzophenone, acetophenone; polyvinyl esters-acetate, propionate, butyrate, acetate-propionate. Preferably the polyvinyl ester is dissolved in the de-esterifying agent, and the catalyst added; when a test portion has become water-soluble, but before gelation, the aldehyde or ketone is added; the final resin is precipitated by water, and washed free of catalyst. The resins may be plasticized, e.g. with tributyl, triphenyl, or tricresyl phosphates; diamyl or dibutyl phthalates; di- and tri-glyceryl esters, e.g. acetates, propionates, or butyrates; glycerol acetal esters, e.g. butyraldehyde acetal of mono-acetin, monobutyrin, or monovalerin; glycerol acetal ethers, e.g. acetaldehyde acetal of glycerol mono-ethyl or mono-dodecyl ether; and mono-chlornaphthalene. The resins may be pressed into blocks and skived to lamin for safety glass; made into films by coating a solution of the resin in a non-corrosive, low-boiling solvent such as acetone with or without methanol or chloroform on to a glass or metal plate or a revolving drum, evaporating, stripping, and curing by heating with warm air; moulded or extruded; used in coating compositions or photographic film bases. In examples: polyvinyl acetate is saponified until water-soluble (a) by hydrogen chloride in methanol solution, then reacted with acetaldehyde alone or with n-butyraldehyde, furfural, cyclohexanone, acetophenone, or benzophenone, with n-butyraldehyde alone or with n-heptaldehyde, acetone, methyl ethyl ketone, or acetophenone, or with 2-ethylbutyraldehyde, 2-ethylhexaldehyde, n-heptaldehyde, furfural or cyclohexanone; (b) by hydrogen chloride in solution in dioxane and methanol or ethanol, then reacted with acetaldehyde; (c) by hydrogen chloride in solution in methanol and ethanol, then reacted with n-butyraldehyde; (d) by hydrogen bromide in methanol solution, and then reacted with acetaldehyde. Solvents specified for the product are methanol, acetone, and chloroform. Specification 483,222 is referred to.
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en
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GB-699605-A
|
GB-1982952-A
|
GB
|
A
|
A
| null | 1952-08-06
| null |
B02C17/22
|
HENRICOT JACQUES FERNAND
|
Improvements in grinding mills
|
en
|
699,605. Ball mills. USINES HENRICOT E. Aug. 6, 1952, No. 19829/52. Class 59 The lining of a ball mill comprises a plurality of rings 5 each provided with studs 9 the heads of which are at varying distances from the axis of the mill, those heads in each ring which are furthest from the mill axis being disposed towards the feed end 2 of the mill and those heads nearest the mill axis being disposed towards the discharge end 3 of the mill. The studs of the rings diminish in height from the feed end to the discharge end of the mill and the distance between studs may be reduced gradually from the feed end to the discharge end of the mill. The studs may be of constant height provided on a frusto-conical plate, Fig. 3 (not shown), or of varying height provided on a cylindrical plate, Fig. 4 (not shown).
|
en
|
GB-147810-A
|
GB-1985520-A
|
GB
|
A
|
A
| null | 1920-07-09
| null |
G05F1/335
| null |
Improvements in and relating to electrical regulating systems
|
en
|
147,810. British Thomson-Houston Co., (Assignees of Murphy, E. J., and Thompson, L. IV.). July 10, 1918, [Convention date]. Transformers.-A transformers 5 is provided with a magnetizing winding 13 energized by a direct or lowfrequency generator 23 and arranged so that the varying flux due to the primary winding 9 produces no electromotive force in the winding 13.
|
en
|
GB-1189852-A
|
GB-1990867-A
|
GB
|
A
|
A
| null | 1967-05-01
| null |
B01F23/30
| null |
Method and Apparatus for Conditioning Particulate Materials
|
en
|
1,189,852. Mixing apparatus. NATIONAL ENG. CO. of CANADA Ltd. 1 May, 1967 [4 May, 1966], No. 19908/67. Heading B1C. Apparatus for mixing particulate material, e.g. for heating foundry sand, comprises a chamber 22 containing a central shaft 48 driven by an electric motor 26 and carrying lower paddles 130, 132, upper paddles (122, 128, Fig. 4, not shown), and a nozzle 40 through which hot air passes from a heater 38. The air is directed onto a series of vanes 112 which surround the axis, and each extend inwardly from the chamber wall, but are inclined to radii of the Shaft, and to horizontal. One of the upper paddles (122) traverses the inclined part 54 of the chamber wall and throws material between the vanes, so that it falls back through the jet of hot gas from the nozzle 40. The other paddles, 128, 130, 132 mix the material in the base so that the material is uniformly heated. The vanes have circumferentially directed flanges (112a, Figs. 9 and 10, not shown) at their upper ends which abut the adjacent vanes, but apertures are left so that material may pass above the vanes and fall back slowly. The chamber may be insulated by glass fibre 70. Material enters by a chute 30 and is discharged through a chute 34.
|
en
|
GB-780226-A
|
GB-1991755-A
|
GB
|
A
|
A
| null | 1955-07-09
| null |
H02B1/04
|
ATHERTON THOMAS GEOFFREY FENTO
|
Improvements in and relating to the mounting of circuit breakers in distribution boards
|
en
|
780,226. Switchboards; switch cases. DORMAN & SMITH, Ltd. Feb. 3, 1956 [July 9, 1955], No. 19917/55. Class 38 (5). A distribution board having a plurality of circuit-breakers 12 comprises a bus-bar 10 and a support rod 11 arranged parallel to each other within a casing (not shown). The bus-bar has a slot 13 for each breaker 12 and the rod has a hook-like projection 17 along its length, each breaker having a contact arm 14 provided with a screw 15, whereby a breaker is mounted by sliding it in an inclined position with the screw 15 slackened so that the screw moves to the end of the slot 13 with the arm 14 beneath the busbar and a clamping member 16, loose on the screw above. The breaker is then lowered to the horizontal position so that it rests on the rod 11 and slid to the right so that a projection 18 thereon is retained by the hook 17, the screw 15 then being tightened.
|
en
|
GB-840869-A
|
GB-1993858-A
|
GB
|
A
|
A
| null | 1958-06-21
| null |
B41F9/14
|
GILLIS EDMUND ANTHONY
|
Improvements in and relating to intaglio printing presses
|
en
|
840,869. Printing machines. CRONITE CO. Inc. June 21, 1958, No. 19938/58. Class 100(2) In an intaglio printing press an endless belt for wiping the surface of the die is normally fed step-by-step beneath a wiping pad by means actuated from the drive to the press, and an electric motor is provided for advancing the belt through an extra long step when the approach of the seam in the belt to the wiping pad is detected. General arrangement. A shaft 30, driven by an electric motor (not shown) carries a pinion 31 which engages gear wheels 32, 44 secured to shafts 33, 43 respectively. A disc 37 mounted on the shaft 33 carries a pin 38 which engages a cam slot 36 in an arm 35 pivoted at its lower end to the machine frame and at its upper end to a link 40. The link 40 is connected to the die 41 so that as the arm 35 is oscillated by the rotation of shaft 33 the die 41 is reciprocated horizontally on slides secured to a portion 15 of the machine frame. A cam 69 mounted on shaft 43 engages a follower on one arm of a bell-crank lever 66 which is pivoted to the machine frame at 65 and connected by a link 74 to an arm 72 rigid with a shaft 76. Also rigid with the shaft 76 is an arm 77 carrying a roller 78. The action of the cam 69 oscillates the arm 77 from the position shewn in which the roller 78 engages an ink fountain roller 82 to a position where the roller 78 engages and inks the upper face of die 41 as it reciprocates on its slides. The follower on the bell-crank lever 66 is held in engagement with the cam 69 by a spring 71. Above a platen P a ram 50 is mounted for vertical reciprocation by a link 48 pivoted to an eccentric pin 47 on a disc 45 which is mounted on the shaft 43. The ram 50 descends to make an impression when the die 41 is positioned over the platen P. A bell-crank lever 54 pivoted to the machine frame at 53 carries at the end of one arm the wiping pad 51 and at the other a roller 58 which acts as a follower for a cam 59 mounted on the shaft 43, a spring 62, holding the roller 58 in engagement with the cam. The action of the cam 59 is such that the wiping pad 51 is in its lowest position as the die 41 is passing beneath it and is then raised. Wiper band mechanism. An endless band 126 having a seam 170 is passed beneath the pad 51 and provides the surface on which the die 41 is wiped as it moves from inking to printing position. The band passes round a roller 121 which runs in a bath of ink solvent, between feed rollers 92, 93, round an idler roller 115, a weight 127 for taking up the slack in the band, idler rollers 114, 111, and between rollers 103, 101. A shaft 203 carrying a sprocket wheel 206 is rotated intermittently through a ratchet wheel 204 and a pawl 205 which is fixed to an arm 202 oscillated through a link 200 by an eccentric pin 33b on a disc 33a mounted on the shaft 33. The drive from the shaft 203 is transmitted by a sprocket chain 207 to a shaft 100 on which is mounted the roller 101, and thence by a sprocket chain 109 to the shaft of the feed roller 93 which is geared to that of the feed roller 92. By these means the band 126 is advanced one step each time the pad 51 is raised so that a clean portion is presented for wiping the die after its next inking. So that the die is not wiped with the seam 170, the latter is detected as it passes between rollers 210, 212 and the roller 212, which is resiliently mounted, actuates a switch 215. Actuation of the switch 215 closes the circuit of a latching relay connected in the circuit of a second electric motor which is coupled through an overrunning clutch to the shaft of the feed roller 93. A switch 173, actuated by the cam 59 through the roller 58 ensures that the second motor is set in motion only when the pad 51 is in the raised position. The second motor rotates the rollers 93, 92 at a higher speed than that at which they are driven by the shaft 30 so that the join 170 is carried past the pad 51 before the die 41 next reaches wiping position. Provision is made in the circuit controlling the second motor to prevent its actuation if, when the main press drive is disconnected, the join 170 comes to rest between the rollers 210, 212. An inching switch is provided so that the second motor may be used for running the belt 126 through the press for cleaning when the main drive is disconnected. In a modification the join 170 is detected as it passes between the rollers 101, 103, the roller 103 actuating the switch 215. Specifications 672,315 and 740,727 are referred to.
|
en
|
GB-358088-A
|
GB-1999030-A
|
GB
|
A
|
A
| null | 1930-07-01
| null |
B23Q5/56
| null |
Improvements in and relating to means for concealing the discharge flash and preventing smoke discharge in guns
|
en
|
358,088. Firearms. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Soc. Italiana Miglioramento Armi; 36, Via Gaetano Filangeri, Naples, Italy.) July 1, 1930, No. 19990. [Classes 9 (i), 92 (ii), and 119.] Means for diminishing the flash and smoke accompanying discharge, which also acts to lessen the noise and to reduce the recoil, comprises apparatus for automatically injecting a cooling medium such as water into the explosion gases at or near the gun muzzle. In the form shown in Fig. 2, the injector forms part of a muzzle attachment 8 and is additional to the known means shown in Fig. 1, wherein a container 4 for the cooling medium is arranged between the projectile 1 and charge 3, the medium mixing with the gun gases as they expand into a chamber 7. The additional supply of cooling medium enters by a passage 17 between slidable rings 18, 19, the pressure of the gun gases serving to move the rings to uncover injection ports 12. In the form shown in Fig. 12, the gases are in part led rearwardly through passages 43, 44 and in part act forwardly on a piston 45 which injects the cooling medium from the chamber 17 into the path of the gun gases, mixing being assisted by deflector s 101 and baffle rings 31. Fig. 14 shows a form suitable'for rifles and machine guns in which the gun gases act through a port 61 on a piston 64 to inject the cooling medium through a spring-loaded valve 65<1> into the bore by way of a passage 66 near the muzzle.
|
en
|
GB-1058290-A
|
GB-2012364-A
|
GB
|
A
|
A
| null | 1964-05-14
| null |
F16C19/36
| null |
Self-aligning rolling-contact bearing
|
en
|
1,058,290. Bearings. W. SCHAEFFLER, and G. SCHAEFFLER, [trading as INDUSTRIEWERK SCHAEFFLER oHG.]. May 14, 1964 [May 16, 1963], No. 20123/64. Heading F2A. A self-aligning roller bearing has an inner race (1), the Figure (not shown), an outer race comprising two parts (5) which are joined together in a plane at right angles to the axis of the bearing, and has barrel-shaped rollers (2) positioned between the races. Each part (5) has an outwardly-directed flange (6) having a series of equally spaced holes (8) therein for fixing the bearing to a structural part. The parts (5) are welded together at (7) for example and have inwardly-directed flanges (9) which carry sealing rings (10) having annular flanges (11, 12) thereon.
|
en
|
GB-1567781-A
|
GB-2014776-A
|
GB
|
A
|
A
| null | 1976-05-15
| null |
A01N43/12
| null |
Pyrazolopyrimidines
|
en
| null | null |
GB-1500714-A
|
GB-2023474-A
|
GB
|
A
|
A
| null | 1974-05-08
| null |
F16F9/48
| null |
Shock absorbers
|
en
|
1500714 Hydropneumatic shock absorbers with varying spring rate OLEO INTERNATIONAL HOLDINGS Ltd 5 May 1975 [8 May 1974] 20234/74 Heading F2S In a hydropneumatic shock absorber (Figs. 1A and 1B, not shown), the gas and liquid are separated by a movable wall 24A, 24B; liquid displaced through throttling means (including the orifice in wall 14A, 14B) on compression of the shock absorber acts to displace the movable wall and compress the gas; the gas space comprises two chambers 26, 27, the gas in the chamber 26A, 26B acting at all times on the movable wall; and a spring-biased valve 56, 62 prevents communication between the gas chambers until opened automatically when the shock absorber has been compressed to a certain length. On extension the valve recloses when this length is again reached. The gas in the chamber 27 is required to be at a higher pressure than that in the chamber 26. The shock absorber is a railway vehicle buffer and comprises a plunger 10A, 10B bearing an impact head (Fig. 1) at its L.H. end, and sliding in a liquid containing cylinder (11, Fig. 1). On impact, the plunger enters the cylinder and liquid is displaced into the chamber 25A, 25B through the orifice controlled by a metering pin (16, Fig. 1) fixed to the cylinder base, and a flexible annular valve member (23). The liquid displaces the movable wall which is a floating piston 24A, 24B, and this displacement causes a pin 58, 64 on the piston (Fig. 4) or the plunger (Fig. 6) to open the valve, so that further compression of the shock absorber compresses the gas in both chambers. In Fig. 1, the chambers are separated by a movable partition (28) and a stem (32) projects from the L.H. end wall of the plunger and carries a valve head which seats on the partition.
|
en
|
GB-700175-A
|
GB-2028250-A
|
GB
|
A
|
A
| null | 1950-08-15
| null |
E04G11/12
| null |
Improvements in or relating to shuttering for casting concrete
|
en
|
700,175. Shuttering panels for casting concrete. JOHNSTON BROS. (CONTRACTORS), Ltd., and BONE, A. B. Nov. 15, 1951 [Aug. 15, 1950], No. 20282/50. Class 20 (2) Shuttering panels 10, Fig. 1, are reinforced by tubular backing members 14, 16 welded, riveted or attached by screws or clamped thereto, so that when arranged side by side the ends of the tubes 14, 16 are in alignment and are connected together by plugs 24 which may comprise standard scaffold joint pins. The ends of the tubes 14, 16 terminate short of the peripheral flanges 11 which are cut away to accommodate the plugs 24. Alternatively the ends of the tubes may be bent to clear the flanges. The tube 16 may be formed in two parts abutting the tube 14 or the tube 16 may be cut away to leave a portion extending over the tube 14. Alternatively the tube 16, Fig. 4 (not shown), may be bent over the tube 14. One part 17, Fig. 2, of a standard scaffold clamp may be secured to the tubes 14, 16 at their junction, the other part 18 being adapted to receive a scaffold tube 23 extending across a number of panels to be supported on a scaffold structure.
|
en
|
GB-1009697-A
|
GB-2030962-A
|
GB
|
A
|
A
| null | 1962-05-25
| null |
B65H19/29
|
ALEXANDER ROBERT CURTIS
|
Rolled paper, method of, and apparatus for securing the free end thereof
|
en
|
1,009,697. Packages and packing machines. KIMBERLY-CLARK CORPORATION. May 25, 1962, No. 20309/62. Heading B8C. [Also in Divisions A4, B6] The free end of a roll of paper is secured by lightly moistening a small area of the final layer of the roll near the free end and compressing part or all of the moistened area to cause the outer layer and a small number of layers thereunder to interlock. In one form of machine for securing the ends of rolls of paper, e.g. rolled toilet tissues or rolled paper towels prior to wrapping, a log of rolled paper which is subsequently sawn transversely into rolls, is fed by a member 30a on a conveyer 30 to a conveyer 34 and beneath a heated platen 36 which may be plain faced or may carry on its lower face a number of embossing dies. The leading end of the log first actuates a switch 31 to open a nozzle 33 providing a finely atomized spray impinging on a longitudinal strip of the log, and subsequently, when the log is positioned beneath the platen 36 actuates a switch 35 to stop the conveyer 34. The member 30a now actuates a switch 37 controlling a valve 46 to cause the admission of pressure air to the tops of two cylinders 42, 43 so as to move the platen downwardly into contact with the log. During such movement, a finger 52 on a connecting rod 41 operates a time switch 51 which actuates the valve 46 to cause upward movement of the platen 36 after pressure has been applied to the log for the required time. As the rod 41 moves upwardly a toggle switch 54 is actuated and air is admitted to a cylinder 55 which operates a kicker bar 59 to push the log laterally off the conveyer. An arm carrying the kicker bar releases a switch 35a to allow the conveyer 34 to operate at the commencement of another cycle. If a malformed log is presented to the conveyer 34, an attendant swings a gate 61 away from a position in the path of the log so that the latter continues to move with the conveyer 34 to a reject receiver. As the gate 61 is moved, it operates switches 61a, 61b which allow the conveyer 34 to continue its movement, but prevent operation of the platen 36 and kicker bar 59. The moistening fluid may have adhesive properties. In another form of machine, Figs. 3, 4 (not shown), a log of rolled paper is fed into a trough beneath a platen carrying a number of dies corresponding to the number of rolls and each carrying an embossing-die portion. During its movement into the trough, the log trips a switch which causes a nozzle to apply a finely atomized spray along a narrow band of the outermost layer of paper near its free end. When the log is positioned in the trough it actuates a timing switch causing operation of piston-and-cylinder devices which move the platen so as to press the dies against the log so as to cause isolated areas of the top layers of the log to interlock. The dies are heated so that they also act to dry the sprayed area. The treated log is ejected on to an inclined table into a carrier which moves the log at intervals into the path of a saw cutting it into rolls.
|
en
|
GB-1190735-A
|
GB-2032666-A
|
GB
|
A
|
A
| null | 1966-05-07
| null |
B63H11/11
|
ANGIER RICHARD
|
Improvements in or relating to Steering Means for Vessels employing Hydraulic Jet Propulsion
|
en
|
1,190,735. Water-jet propulsion. U.A. ENG. Ltd. 8 May, 1967 [7 May, 1966], No. 20326/66. Heading B7V. In water-jet propulsion apparatus for a water-borne vessel, a pair of part-cylindrical deflectors 2 are attached to a duct 1 so that they are capable of pivotal movement about a common vertical axis X-X intersecting the longitudinal axis Y-Y of said duct to bring either or both of them into the path of a jet of water that issues from said duct and thereby effect either steering of the vessel while it is being propelled by said jet in a generally forward direction or propulsion of the vessel astern. When the vessel is to be propelled directly astern, both of the deflectors are placed equally in the path of the jet in abutment with each other, the jet being deflected downwardly between a plurality of arcuate vanes 15 in the lower wall of said duet and by a curved portion 11 on each deflector. In a modification, Fig. 3 (not shown), the vanes 15 are placed in the lower wall 9 of each deflector. Steering can be effected while the vessel is being propelled astern by either pivotal movement of both of the deflectors in one direction or the other, or pivotal movement of one of the deflectors away from the other.
|
en
|
GB-680953-A
|
GB-2036350-A
|
GB
|
A
|
A
| null | 1950-08-16
| null |
C07F7/12
| null |
Process for the manufacture of organohalogenosilanes
|
en
|
<PICT:0680953/IV (b)/1> Organic halosilanes are prepared by contacting at elevated temperature a contact mass of silicon, with or without an added metal, with an alkyl, aryl or alkaryl halide in a plurality of juxtapositioned reaction zones which are spaced from one another by a heat-exchange medium. Preferably, the medium has a boiling point about the same as the reaction temperature, e.g. 280-300 DEG C. when using methyl chloride; a suitable medium is a mixture of cresyl orthosilicate and cresol. The products have the formula RnSiX4-n, where R is alkyl, aryl or alkaryl (e.g. methyl, ethyl, phenyl or tolyl) and X is fluorine, chlorine, bromine or iodine. The silicon is preferably used in the form of a moulded body made from silicon and if desired a metal as catalyst, e.g. copper if R is alkyl or silver if R is aryl. The sectioned reaction chamber may be of tubular or circular form or cabinet-like, and the sections may or may not be interconnected. They are of small dimensions in directions perpendicular to the heat-exchange surfaces to minimize temperature gradients in the reaction mixture. When the reaction chamber is in the form of tubes, the heat-exchange medium may be inside the tubes and the reactants outside or vice versa. In a typical case the reaction takes place in tubes 3 surrounded by a liquid bath 2. Silicon enters at 4 and methyl chloride through nozzles 12, halosilane vapour being collected from 14. If desired, the heat-exchange medium, which also serves to heat the reactants, may be gaseous, or alternatively it may be a continuously circulating fluid in which case it should be at a temperature higher than the reaction temperature.
|
en
|
GB-1344845-A
|
GB-2042071-A
|
GB
|
A
|
A
| null | 1971-04-19
| null |
C07C13/43
| null |
Nobornene derivatives and processes for preparing the same
|
en
|
1344845 Norbornene derivatives SNAM PROGETTI SpA 19 April 1971 [22 Jan 1970] 20420/71 Heading C2C [Also in Division C5] Dihydric alcohol derivatives of norbornenes are prepared by reaction of a cyclopentadiene and an ester of fumaric acid or of maleic acid to give a compound of the Formula (C) which is reacted with a Grignard reagent to form the dihydric alcohol of Formula (D) In an example an alcohol of this formula wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are each hydrogen and R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP>, R<SP>8</SP> are each methyl groups is prepared by reaction of cyclopentadiene and dimethylfumarate in toluene solution followed by treatment with CH 3 MgI and hydrolysis.
|
en
|
GB-1044601-A
|
GB-2042965-A
|
GB
|
A
|
A
| null | 1965-05-14
| null |
H04Q3/00
| null |
Improvements to selection systems for electrical lines or circuits
|
en
|
1,044,601. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORPORATION. May 14, 1965 [May 15, 1964], No. 20429/65. Heading H4K. In a system having primary and secondary switching stages EP, ES each arranged in sections such as SP1, SP2; SS1, SS2 in which direct links such as mpd1, mpd2 connect each primary section with each secondary section. each primary section includes both regular selectors CV, DV and overflow or entraide selectors ECV, EDV, the latter being connected to the regular selectors of other primary sections by links such as mpe1, mpe2. Assuming that an inlet ent1 requires to be connected to a marked outlet st, the first-choice route is over the direct link mpd1. If that is busy, the entraide link mpe1 is selected and is extended over the entraide selector EDV of the section SP2 to the entraide link mse2 if available, or else over the regular link mpd2 to the secondary stage SS1. The system is a development of that described in Electrical Communication, Vol. 38, March 1963, in a paper entitled 1000B Pentaconta Crossbar Switching System.
|
en
|
GB-840857-A
|
GB-2043257-A
|
GB
|
A
|
A
| null | 1957-06-28
| null |
C22C1/04
|
BARRETT TREVOR ROBERT
|
Method of producing shaped bodies of beryllium
|
en
|
Shaped bodies of beryllium are formed by filling loose beryllium powder of particle size not greater than 80 microns in a mould, and sintering the powder in the mould without applying pressure thereto before or during sintering. Preferred particle sizes of beryllium powder are specified. The main impurities in the beryllium powder are beryllium oxide, chlorine, nitrogen, iron, silicon, magnesium, aluminium and boron. The sintering is preferably effected in vacuo at 1150 to 1250 DEG C., the surface of the beryllium powder in the mould being covered with a layer of inert refractory powder, such as beryllium oxide, to minimize volatilization of the beryllium.
|
en
|
GB-663327-A
|
GB-2046149-A
|
GB
|
A
|
A
| null | 1949-08-05
| null |
B23K35/36
| null |
Welding fluxes
|
en
|
A pulverulent welding flux comprises 30 to 50 parts by weight of sodium carbonate monohydrate, 10 to 30 parts hydrated alkali metal pentaborate and 1 to 10 parts graphite. It may also contain 20 to 40 parts alkali metal nitrate, 5 to 20 parts silica and 1 to 10 parts iron oxide or manganese oxide.
|
en
|
GB-857107-A
|
GB-2046858-A
|
GB
|
A
|
A
| null | 1958-06-26
| null |
C08G65/325
| null |
Halogenated polyalkylene oxides
|
en
|
Waxy to solid halgenated poly alkylene oxides having a 5% aqueous solution viscosity of 10 to 500,000 cps. are prepared by reacting a high molecular weight solid poly alkylene oxide containing certain catalyst residues with a halogenating agent, the product having an average molecular weight lower than that of the starting polymer. The catalyst residues are those of amides of calcium, strontium, barium, zinc and cadmium, hexammoniates of calcium, strontium and barium, or decomposition products of these hexammoniates which contain only the metal, nitrogen and hydrogen. Suitable polymers are polyethylene oxide, poly propylene oxide and copolymers of ethylene oxide with other alkylene oxides. The halogenating agent may be any halogen or an alkali metal or alkaline earth metal hypochlorite. The resin may be treated as an aqueous slurry or as a supsension in an organic liquid such as heptane, carbon tetrachloride or chloroform, or as a finely divided powder. Halogenating gases may be diluted with inert gases. Residual halogen may be neutralised after the reaction with ammonia or an amine. Examples are given.
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en
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GB-148542-A
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GB-2052520-A
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GB
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A
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A
| null | 1920-07-10
| null |
F42B39/00
| null |
Receptacle for blasting cartridges
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en
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148,542. Meffert, P. Aug. 30, 1915, [Convention date]. Stoppers, plug. - A receptacle for carrying liquidair blasting-cartridges is formed with a long neck R closed by a tubular plug c having a solid outer end provided with a slot for the passage of the electric detonator wires f. The plug c also serves to guide the cartridges into the bor holes.
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en
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GB-1217113-A
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GB-2054169-A
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GB
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A
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A
| null | 1969-04-22
| null |
B23K20/04
| null |
Methods of making stiffened or reinforced plates
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en
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1,217,113. Jointing by rolling; making composite plates. VEREINIGTE METALLWERKE RANSHOFEN-BERNDORF A.G. 22 April, 1969 [22 April, 1968], No. 20541/69. Headings B3A and B3M. A reinforced plate is made by roll bonding metal sections 3 to metal sheets 5, the sections being supported by a member 2 of harder material during rolling. Two plates may be rolled simultaneously using a common member 2, Fig. 2, or sections may be bonded between a pair of sheets to form a sandwich plate. The member 2 is removed from the assembly after rolling. The gaps 15 in the member 2 can be shaped at their edges or provided with ejectors 16, Fig. 8, to help in removing the member from the assembly. The sheets and sections may be of different aluminium alloys which are heated to between 450 and 500 C. The member 2 may be of steel which is preheated to 300-400 C., a stop-weld material such as graphite being used to prevent adhesion between the member and rolled plate.
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en
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GB-995408-A
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GB-2065064-A
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GB
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A
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A
| null | 1964-05-19
| null |
B23Q3/00
| null |
Improvements in and relating to timber feeding apparatus for dividing band saws
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en
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995,408. Sawing. G. CANALI. May 19, 1964, No. 20650/64. Heading B5L. A device for feeding timber 9 to a dividing band saw 2 comprises a band 3 which is guided over sprockets or rollers and runs in the direction of feed for urging the timber into cutting engagement with one side of the saw blade, and a plurality of rollers 5 which are adjustable for inclination and acted on by pressure means 8 for urging the timber towards the other side of the saw blade. The rollers 5 are rockable about their centres and are carried by arms 4 acted upon by the pressure means such as springs or hydraulic cylinders 8 mounted in a frame 6 which may be urged towards the saw by hydraulic means 7. The rollers are driven from a common shaft through differential gearing 13, 14 which accommodates the different paths of the rollers as they move over the timber. A known device is described having a chain on one side of the saw blade and a single wide roller on the other side.
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en
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GB-1033759-A
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GB-2083365-A
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GB
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A
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A
| null | 1965-05-17
| null |
F01D5/18
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AYERS KENNETH MICHAEL
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Aerofoil-shaped blade
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en
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1,033,759. Turbine blades. ROLLS-ROYCE Ltd. May 17, 1965, No. 20833/65. Heading F1T. A turbine blade has a main cooling air bore 11 extending from the root to the tip of the blade and communicating with further radially extending bores 14, 15 by way of slots 20 having a converging portion 26 and a portion 27 of constant width. Fins 23 in bore 14 adjacent leading edge 16 assist the cooling. Bore 15 communicates through a slot 25 with the blade external surface adjacent trailing edge 17. In a modification, Fig. 2 (not shown), slots 20 converge continuously from bore 11 to bores 14, 15 except at the radially inner and outer ends of the slots which have portions 21 of constant width. Fins 24 are also provided in bore 15.
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en
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GB-915233-A
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GB-2084161-A
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GB
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A
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A
| null | 1961-06-08
| null |
F02C7/22
| null |
Fuel injection arrangement for gas turbine engines
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en
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915,233. Gas turbine jet engines. UNITED AIRCRAFT CORPORATION. June 8, 1961 [July 13, 1960], No. 20841/61. Class 110 (3). In a gas turbine engine comprising concentric inner, middle and outer walls defining inner and outer air passages, a fuel injection arrangement comprises a hollow ring member which is detachably mounted at the upstream end of the middle wall, the ring member being formed by a plurality of fuel manifold arcuate sections which are readily detachable from one another, and are supported by hollow radial bosses through which fuel is supplied to circumferentiallyextending conduits in the manifold sections. Fuel is adapted to be discharged from the manifold sections into the inner air passage. The supporting bosses are slidably supported by the outer wall so as to permit thermal expansion of the middle wall relatively thereto. The invention is described with reference to a gas turbine jet engine of the by-pass type, as shown in Fig. 1. The by-pass passage 24 is formed by the inner wall 26 and by an outer wall 36 and a middle wall or baffle 40 is disposed therebetween so as to define an inner air-fuel passage 42 and an outer cooling air passage 44, a fuel supply apparatus 50 being mounted at the upstream end of the middle wall. The apparatus 50 is shown in Fig. 2 and comprises a hollow ring member 66 within which are disposed two fuel manifold rings 70, 72 which are connected to members 74. Fuel spray bars 76 having discharge orifices 96 are mounted on the members 74. Fuel is supplied to the manifolds 70, 72 through members 100, 102 which also serve to support the manifold rings from the outer wall or casing 36, the fuel passing from the manifolds through ducts 86, 88 into the spray bars. The fuel supply and support boss 106 shown in Fig. 6 passes freely through an opening 116 in a plate member 110 secured to the engine outer casing 36. There may be three arcuate sections 118 of the ring manifold each extending 120 degrees and supported at its mid-point by a support boss 106 and secured at its ends to the ends of the adjacent manifold sections as shown in Fig. 7. Adjacent ends of the sections 118 are secured to members 122, 124 which overlap and are connected together by bolt members 130 as shown in Fig. 10. The ends of the fuel conduits 70, 72 in each arcuate section 118 are closed by means of plugs 132, Fig. 9, so that fuel does not pass between the manifold sections.
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en
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GB-460224-A
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GB-2094635-A
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GB
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A
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A
| null | 1935-07-23
| null |
C09B29/00
| null |
The manufacture of azodyestuffs
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en
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Water-soluble azo dyestuffs are manufactured by coupling diazotized aminoarylsulphofluorides with coupling components containing at least one sulphonic acid group, e.g. pyrazolone sulphonic acids, hydroxy- and aminonaphthalene sulphonic acids, aminonaphtholsulphonic acids, and their acyl derivatives. The products dye animal fibres clear shades. Examples describe the manufacture of the dyestuffs: (1) 3-aminobenzenesulphofluoride --> 1-(4<1>-sulphophenyl)-3-methyl-5-pyrazolone; the product dyes wool yellow shades; (2) 3-aminobenzenesulphofluoride --> 2-naphthol-6-sulphonic acid (orange shades) or 1 - acetylamino - 8 - naphthol - 4 : 6-disulphonic acid (red shades); (3) 2-aminobenzenesulphofluoride --> 1-(2<1>-chloro-5<1>-sulphophenyl)-3-methyl-5-pyrazolone (greenish yellow shades); (4) 2-amino-3 : 5-dimethylbenzene-1-sulphofluoride --> 2-acetylamino-8-naphthol-6-sulphonic acid (red shades); (5) 2 : 4 - dimethyl - 5 - aminobenzene - 1 - sulphofluoride --> 1-(2<1>, 3<1>- or 4<1>-sulphophenyl)-3-methyl-5-pyrazolone (greenish yellow shades); (6) 2 - methyl - 4 - aminobenzene - 1 - sulphofluoride --> 1-naphthol-4-sulphonic acid (red shades), or the 3-methyl-5-pyrazolones from o-, m- or p-sulphanilic acid or 2-chloraniline 5-sulphonic acid (yellow shades) or 2-acetylamino-8-naphthol-6-sulphonic acid (red shades); (7) 2 - methyl - 5 - aminobenzene - 1 - sulphofluoride --> N-methyl-2-naphthylamine-7-sulphonic acid (yellowish red shades). The aminoarylsulphofluorides employed in the foregoing examples are obtainable from the corresponding sulphonic acids by means of fluorosulphonic acid.
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en
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GB-1008341-A
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GB-2098563-A
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GB
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A
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A
| null | 1963-05-25
| null |
B65H69/02
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CASSIE ARNOLD BLATCHFORD DAVID
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Means for dispensing jointing preparations
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en
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1,008,341. Coating apparatus. WOOL INDUSTRIES RESEARCH ASSOCIATION. May 19, 1964 [May 25, 1963], No. 20985/63. Heading B2B. A jointing &c. dispenser includes a container for the jointing preparation, a lid or cover therefor with an opening in it, and a roller segment rotatably mounted in the container and arranged to be rotated with the segment submerging so that it picks up jointing preparation, a scraper device arranged to operate on the part-circumferential surface of the roller segment to remove surplus preparation therefrom, the roller segment having on its surface helical or other grooves or depressions or cavities, whereby the quantity of jointing preparation dispersed at each revolution of the roller segment can be accurately controlled. In the arrangement shown, a container 1 has slots 3 in its sides to receive the two ends of axle 4 of a roller segment 5 and also to locate the lid or cover 6. The cover 6 has a slot 13 therein for the roller segment 5 and carries a scraper blade 12 which can be adjusted in position thereon relative to the roller segment 5. The segment 5 may be grooved helically or with grooves inclined to the axis of rotation or it may have a transverse channel or be plane and covered with a gauze or other perforated or reticulated cover. In operation axle 4 is rotated and roller segment 5 picks up jointing preparation 15 and transfers it to the outside of the container for application to any desired surface. Due to the surface formation of roller segment 5 and the wiping action of blade 12 an accurately controlled amount of jointing preparation is conveyed thereon.
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en
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GB-700232-A
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GB-2102049-A
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GB
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A
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A
| null | 1949-08-12
| null |
H01L29/02
| null |
Electric circuit elements, devices and systems utilizing semiconductive bodies
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en
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700,232. Semi-conductor amplifiers. WESTERN ELECTRIC CO., Inc. Aug. 12, 1949 [Aug. 14, 1948 ; Aug. 19, 1948], Nos. 21020/49 and 21021/49. Class 40 (4) [Also in Groups XXXVI and XL (c)] An electric circuit element for translating electrical signals comprises a semi-conductor body having an ohmic connection and two opposed faces each engaging a rectifying contact, the thickness of the material between the rectifying contacts being very small so that current emitted from one contact is collected by the other. The device may be used for amplifying or generating oscillations. In Fig. 1, a wedge-shaped piece 11 of semi-conductive material is mounted on a rod 14, and wire contacts 12, 13 are mounted on rods 15, 16 for engagement with the faces of the semiconductor. The rods 14, 15 and 16 are slidable in bores in a block of insulating material 10 and are maintained in their adjusted position by set screws 17. Electrodes 12 and 13 may act as the emitter and collector electrodes and the rod 14 as the base electrode, whereby with suitable biassing conditions signals applied between the emitter and base electrode appear in amplified form in the collector electrode circuit. In a modification, the semiconductor wedge is mounted in and connected to a tubular metal housing, the rods supporting the rectifying electrodes being supported by insulator blocks fixed in the housing. Fig. 5 shows an alternative arrangement in which a semi-conductive disc 40 with two concave surfaces is mounted in a metal cylinder 43 and maintained in position by spring washer 44. Insulating members 45, 46 secure cylinder 43 in position with respect to the terminal members 47, 48 which support the rods bearing contacts 41 and 42. The semi-conductor disc may alternatively be of plano-concave formation or a thin slab. The device may be connected as an amplifier in some intermediate position in a coaxial line, the bias sources being located at the distant ends of the line. The device may also act as an oscillator, and if the resistance between the base electrode and the rectifying contact region of the semi-conductor is of proper value, positive feedback occurs without the need for any other intercoupling means. The semi-conducting material may consist of N or P-types of either germanium or silicon. A suitable etching and washing process and an electrical forming treatment are described. The collector is biased in the direction of difficult current flow and the emitter in the direction of easy current flow, but owing to potential variation in the body of the block this may mean that the emitter is biassed in the same direction as the collector with respect to the base electrode. The rectifying contact for the collector and the emitter may be provided by means of metallic point contacts, or by having ohmic contacts which engage a region of material of conductivity type opposite to that of the main block of semi-conductor, and this region may be produced by the exchange of material between the contact point and the body during current flow. The element of ;the device may be adjusted during assembly with the aid of an oscilloscope, and visual orifices in the housing or insulator blocks may also be provided for this purpose. Specfications 694,021 and 700,231, [Group XXXVI], are referred to.
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en
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GB-499792-A
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GB-2107537-A
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GB
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A
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A
| null | 1937-07-29
| null |
H01J17/04
| null |
Improvements in or relating to gas or vapour electric discharge apparatus
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en
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499,792. Converting. SOC. ANON. POUR LES APPLICATIONS DE L'ELECTRICITE ET DES GAZ RARES, ETABLISSEMENTS CLAUDE-PAZ & SILVA. July 29, 1937, No. 21075. Convention date, June 22. [Class 38 (ii)] [Also in Group XL] In vapour electric discharge apparatus comprising one or more metal parts performing the functions of grids and intended for the conversion of currents and voltages, at least one of the grids 11 is connected by a conductor to an auxiliary electrode or "probe" 13 placed in contact with the discharge arc, the conductor having no solid connection with the supply circuits of the apparatus, and an alternating control voltage 12 is applied in the circuit thus provided. Greater regularity of control and a reduction in the control power is obtained. A second grid may be provided to which a variable voltage is applied to enable the anode voltage-critical control grid voltage characteristic to be varied. The probe may if desired be surrounded by a control grid ; the control voltage is then applied to this grid and not between the probe and main control grid. Specifications 379,271 and 474,759, [both in Group XL], are referred to.
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en
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GB-833505-A
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GB-2115156-A
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GB
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A
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A
| null | 1956-07-09
| null |
B60T15/48
| null |
Improvements in indirectly acting compressed air brakes, particularly for railway vehicles
|
en
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833,505. Fluid-pressure brakes. VERWALTUNGSGESELLSCHAFT DER WERKZEUGMASCHINENFABRIK OERLIKON. July 9, 1956 [July 8, 1955], No. 21151/56. Class 103 (1). A filling device for the constant pressure reservoir S of indirectly-acting compressed air brakes comprises a filling valve F controlling the connection of the constant pressure reservoir S with a pressure chamber 21, into which connection a throttling point variable between a larger, 39, and a smaller, 26, cross-section area is inserted, and which pressure chamber 21 is connected to an auxiliary reservoir H by a non-return valve R which opens only in the sense of the auxiliary reservoir being filled, two auxiliary valves connecting the pressure chamber 21 with the brake pipe L, the first of which valves 27 keeps the communication of the pressure chamber 21 with the brake pipe L open only when the brake is released, and a piston 36 subject to the opposing pressures in the constant pressure reservoir S and in the pressure chamber 21 for the combined operation of the filling valve F, throttling point and second one, 35, of said two valves, the said piston keeping the filling valve 31 open, the second auxiliary valve 35 closed and the larger cross-section area 39 of the throttling point operative when the brake is released, the piston 36 further closing the filling valve 31 at the beginning of an application of the brakes and by opening the second auxiliary valve 35 keeping the communication open between the pressure chamber 21 and the brake pipe L, and at the end of the release in succession closing the second auxiliary valve 35, opening the filling valve 31 with the throttling point adjusted to the small crosssection area 26, and finally switching the throttling point over to the larger cross-section area 39.
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en
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GB-887044-A
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GB-2120658-A
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GB
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A
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A
| null | 1958-07-02
| null |
G08C19/00
|
MOIR JAMES
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Improvements in and relating to signalling by means of a rope such as used for winder and haulage plants
|
en
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887,044. Magnetic records. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 1, 1959 [July 2, 1958], No. 21206/58. Class 40 (2). [Also in Group XXV] A winder or haulage rope is made partly or wholly of magnetic material and carries transverse magnetic signals applied substantially at right-angles so that on playback using a single transverse reading head an output is available whatever the state of twist of the rope. The tracks may be straight or spiral and may be applied simultaneously or consecutively.
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en
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GB-830984-A
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GB-2124557-A
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GB
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A
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A
| null | 1957-07-04
| null |
H01H23/16
| null |
Snap-action electric switches
|
en
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830,984. Snap-action switches. LAMAUDIERE, P. F. J. July 4, 1957 [July 28, 1956; June 20, 1957], No. 21245/57. Class 38 (5). A switch comprises a dolly 13 pivoted on a pin 10 located in apertures 6 in a support 5, the dolly enclosing a socket 12 containing a spring 15 which bears at one end on the pin 10 and at the other end on the cross-piece of an inverted U-shaped rigid link member 17. The latter has hooked ends 18 which engage a contact arm 21 pivoted in notches 8, 9 in the support 5. When the dolly is pivoted, the arm 21 does not move until the dolly passes the dead centre, whereupon the arm is moved by the link 17 with a snapaction. In a modification (Fig. 8, not shown), the link 17 may be a single arm passing through the centre of spring 15. The dolly may coact with elastic cushions on the base, or may carry the cushions.
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en
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GB-1181005-A
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GB-2135769-A
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GB
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A
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A
| null | 1967-05-11
| null |
D02J1/00
| null |
Apparatus for the Texturization of Yarns
|
en
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1,181,005. Yarn bulking apparatus. OWENS-CORNING FIBERGLAS CORP. 11 May, 1967 [18 May, 1966; 29 Dec., 1966], No. 21357/69. Divided out of 1,181,004. Headings D1F and D1W. Yarn bulking apparatus has a fluid jet 18, and double diameter coaxial rollers 23, 24, the larger portions 33 of the rollers serving to feed the yarn to the jet and the smaller portions 34 serving to withdraw the yarn from the jet in a direction sharply away from the axis of the jet. The yarn inlet 19 of the jet lies in the plane of the portions 33 and exit in the plane of the portions 34. The apparatus includes a pivoted tension sensing arm 37 forming part of a constant tension winder 15 and a size applicator. The apparatus may be used to produce bulky yarn as claimed in Specification 1,181,004. Alternatively, rollers 23, 24 may include a third portion intermediate in diameter to the other portions so that the apparatus may be used to combine a "core" yarn and an "effect" yarn fed at a faster speed than the core yarn to the jet.
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en
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GB-412782-A
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GB-2138433-A
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GB
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A
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A
| null | 1933-07-29
| null |
F02M1/00
| null |
Improvements in devices for preventing damage from back-firing in internal combustion engines
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en
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412,782. Preventing damage from back-firing. DELAMAIN, G., 13, Rue Marius-Aufan, Levallois-Perret, Seine, France. July 29, 1933, No. 21384. Convention date, July 29, 1932. [Class 7 (ii).] To prevent damage from back-firing, one or more screens of metallic netting or perforated sheet metal are arranged in the inlet conduit, each screen having a plurality of surfaces disposed in zig-zag relationship and inclined at a large angle to the transverse section of the conduit, the apertures therein forming a passage of a total cross-sectional area not less than that of the conduit. The screen may be formed by a series of inclined planes, or, as shown in Fig. 2, by the displacement of a generatrix 1-2-1 turning about an axis through the point 2, the ends 1, 1 tracing a zig-zag directrix c on a cylindrical surface, or, as shown in Fig. 3, by rotating a zig-zag directrix 3, 4, 5, 6, 7, 8 about an axis x-x.
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en
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GB-729013-A
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GB-2142753-A
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GB
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A
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A
| null | 1953-08-04
| null |
C07D213/85
| null |
Process for the preparation of nitriles
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en
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Nitriles are prepared by reacting nitric oxide with an alkyl-substituted organic compound containing at least one alkyl group directly attached to a carbon atom, which is in turn attached to another carbon atom by a double bond, the reaction being at temperatures between 400 DEG and 700 DEG C., in the presence of a dehydrogenation catalyst. Referring to the Figure, the catalyst tube 1 is heated in a split-type electric furnace 2. In operation the tube is packed with 50 cc. of catalyst 3 of 8-14 mesh, placed between glass helices 4 and 5 so as to occupy the hottest portion of the tube. The thermocouple in tube 6 is used to locate <PICT:0729013/IV (b)/1> the hot-spot in the catalyst bed and the thermocouple in tube 7 regulates the furnace temperature. The top of the catalyst tube is fitted with a gas inlet tube 8 and a constant flow dropping funnel 10. At the start of a run, it is desirable to condition the catalyst under nitrogen and nitric oxide at 200 DEG to 400 DEG C. After this the compound to be nitrosated, e.g. toluene, is added through the capillary feed 14 at the desired rate. The furnace temperature is raised in 50 DEG C. increments until an exothermic reaction occurs. The mixed gases after reaction pass from the catalyst tube and are condensed to a mixture of unreacted material, nitrile, water and a trace of residue. The crude condensate is distilled directly at atmospheric pressure, giving an azeotrope from which water is separated. Distillation is continued under reduced pressure to separate the nitrile or mixture of nitriles. Several dehydrogenation catalysts suitable for the process are specified (see Group III), a silver catalyst on an inert support being preferred but iron, ruthenium, tin, lead, cadmium, platinum and palladium either as metal, oxides, or salts may also be used. The mol. ratio of nitric oxide to alkyl-substituted organic compound depends on the particular compound being reacted. For highest conversion it is desirable to use the highest possible mol. ratio of nitric oxide to the compound nitrosated without causing loss in yield due to oxidation. The preferred temperature range is 450 DEG to 550 DEG C. Inert diluents such as nitrogen or water vapour may be used in the reaction mixture and are advantageous in controlling over-oxidation. Examples of compounds employable in the process of the invention are toluene, the xylenes, mesitylene, 1-methyl-2-ethylbenzene, 1 - phenyl - 4 - methylbenzene, m - tertiarybutyltoluene, 2 - methylpyridine 2 - methyl - 5 - ethylpyridine, 3 - methylpyridine, methylnaphthalene, 2-methylthiophene, 2 - chlorotoluene, 2 - nitrotoluene, 2 - methylfurane, propylene, butylenes, methyl - substituted butadienes such as isoprene and 2 : 3-dimethylbutadiene. In examples (1-12) toluene gives benzonitrile, (13-15) p-xylene gives p-tolunitrile, benzonitrile and terephthalonitrile, (16) o-xylene gives o-tolunitrile, benzonitrile and o-phthalonitrile, (17) m-xylene gives m-tolunitrile, benzonitrile and m-phthalonitrile, (18) b -picoline gives nicotinonitrile, (19) ethylbenzene gives benzonitrile, (20) fumene gives benzonitrile, (21) p-tolunitrile gives terephthalonitrile, (22) p-chlorotoluene gives p-chlorobenzonitrile and propylene gives acrylonitrile.ALSO:Dehydrogenation catalysts are used in the production of nitriles, by reacting nitric oxide with an alkyl-substituted organic compound containing at least one alkyl group directly attached to a carbon atom, which is in turn attached to another carbon atom by a double bond, at temperatures between 400 DEG and 700 DEG C. (see Group IV (b)). Examples of the catalyst which may be used are silver, iron, ruthenium, tin, lead, cadmium, platinum, and palladium, either as the free metals, oxides, or salts such as chromites, molybdites or tungstites. The catalysts may be extended on such materials as charcoal, pumice, kieselguhr, Fullers earth, silica, alumina and thoria. The preferred catalyst is silver extended on charcoal, alumina or silica. The silver-on-alumina catalyst is prepared as follows: Alumina is impregnated with aqueous silver nitrate solution, ammonia and sodium hydroxide solutions added and then reacted with a reducing solution containing cane sugar, ethyl alcohol and nitric acid. Alternatively, the catalyst may be prepared by impregnating the support with the diaminesilver hydroxide and reducing thermally at the reaction temperature.
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en
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GB-276659-A
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GB-2143927-A
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GB
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A
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A
| null | 1927-08-15
| null |
C01B17/86
| null |
Improvements in and relating to the manufacture of sulphuric acid
|
en
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276,659. Petersen, H. Aug. 28, 1926, [Convention date]. Tower processes.-In the manufacture of sulphuric acid by tower processes, such as the Opl process, sufficient nitrogen oxides are set free in the first production tower to oxidize the sulphur dioxide in all the later towers. This is accomplished by the use of a tower of large dimensions irrigated intensively with nitrated acid. The tower may be fitted with atomizers, washers, rotary mixing-devices; &c. or may be packed with acid-resisting grains having a diameter of about 40 mms. An amount of acid representing the production capacity of the plant is withdrawn from the base of the tower and the remainder is passed into the last tower and recirculated through the towers.
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en
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GB-261849-A
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GB-2160525-A
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GB
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A
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A
| null | 1925-08-28
| null |
B04B9/12
| null |
Improvements relating to high speed motor driven spindles
|
en
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261,849. Soieries de Strasbourg Soc. Anon., and Bronnert, E. Aug. 28, 1925. Spindle apparatus; spindle-driving apparatus.- The rotor of high speed motor primarily for driving the spindles of centrifuges for spinning artificial silk is mounted, for the purpose of reducing vibration, on a hollow shaft in which the spindle is contained and to which it is connected by means allowing the spindle to set itself along the axis of gyration of the system. In the arrangement shown, the rotor 3 combined with the stator 2 in a casing 1 is mounted on a shaft 4 turning in ball bearings 5, 6 and connected to an interior spindle 7 by thin walled conical or cylindrical bodies 8, 9 having slots 10 to increase elasticity. In a modified construction, the spindle 7 may be attached rigidly to the hollow shaft at its lower end, the flexible connection 9 at the upper end being dispensed with and the inherent elasticity of the spindle relied on. The motor casing may be supported by a Cardan suspension.
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en
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GB-138042-A
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GB-2171519-A
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GB
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A
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A
| null | 1919-09-04
| null |
B60B21/12
| null |
Improvements relating to the wheels of motor vehicles
|
en
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138,042. Reed, G. Sept. 4, 1919. Tyre attachments to rims. - To prevent creeping, the edges of the tyre cover c engage teeth e on a short metal plate d which is adapted to be clamped to the rim by means of the valvestem. Similar plates may also be fitted under the heads of the security-bolts. The plates may be formed with more than two rows of teeth, but in all cases the centre portion of the plate is left plain.
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en
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GB-532697-A
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GB-2173439-A
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GB
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A
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A
| null | 1939-07-26
| null |
C08J3/00
| null |
Improved method of treating polymeric vinylidene chloride
|
en
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532,697. Vinyl polymerization products, artificial filaments and films. TENNANT, W. J. (Dow Chemical Co.). July 26, 1939, No. 21734. [Classes 2 '(ii) and 2 (iii)] To improve the strength of polyvinylidene chloride and to facilitate the fabrication thereof into articles of high strength by coldworking methods, the polymer or a crystalline co-polymer thereof is heated to a temperature between the softening point and the decomposition temperature until thoroughly plastic, and is then rapidly cooled to about room temperature. For a short period after this treatment, usually from 2 to 60 minutes, the product can be readily cold-worked, e.g. by rolling, extruding, drawing or cold moulding ; when the articles produced are films, filaments, threads or other articles having at least one major dimension of relatively great length as compared with at least one minor dimension of relatively small thickness, it is found that they exhibit a crystalline X-ray diffraction pattern showing the polymer molecules to be orientated parallel to one another and to the major dimension of the article, and that they have a high degree of flexibility and tensile strength. In examples : (1) polyvinylidene chloride, (2) a co-polymer of vinylidene chloride and styrene and (3) a co-polymer of vinylidene chloride and ethyl acrylate are heated to above the softening point until plastic, and then rapidly cooled to form products which are rapidly moulded in the cold ; (4) a co-polymer of vinylidene chloride and vinyl chloride plasticized with phenoxy-propylene oxide is moulded while hot to a sheet; the sheet is cooled, dipped into heated glycerine, and then chilled in water; (5) vinylidene chloride polymerized by heat in the presence of hexachlorodiphenyl oxide and benzoyl peroxide is dissolved in o-dichlorobenzene and cast to a film on a magnesium plate ; before removal from the plate, the film is dipped into heated glycerine and then chilled by dipping in water ; (6) polyvinylidene chloride is melted, rapidly cooled to room temperature, and stretched to produce tough pliable fibres ; (7) a co-polymer of vinylidene chloride and vinyl chloride plasticized with tricresyl phosphate is heated and extruded while hot to produce a filament which is passed directly into cool water, the cooled filament being then stretched at room temperature to produce a filament from which fishing nets and filter cloths can be made ; (8) a co-polymer of vinylidene chloride and vinyl acetate is heated in the presence of dioxan and the hot gelatinous mass extruded ; the fibre produced, freed from dioxan by a current of hot air, is heated by immersion in hot glycerine and then cooled to produce a fibre resembling silk ; (9) and (10) co-polymers of vinylidene chloride with styrene or ethyl acrylate are softened in a heated glycerine bath and then subjected to rapid drawing and simultaneous cooling in air to produce tough filaments.
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en
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GB-678448-A
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GB-2179649-A
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GB
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A
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A
| null | 1949-08-23
| null |
B65H54/54
| null |
Improvements relating to yarn winding machines
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en
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678,448. Winding yarns. SCRAGG, Ltd., S. & E., SCRAGG, F., and DOBSON, A. Sept. 15, 1950 [Aug 23, 1949], No. 21796/49. Class 120(ii) A yarn winding machine comprises a rotary drum A, a reciprocating bar C having a yarn guide D mounted thereon to feed yarn to a spool H having a flange H<SP>1</SP> one end only, coned at H<SP>2</SP>, the spool being frictionally engaged initially by the drum, to be driven thereby, and mounted on a spindle E having its ends engaging in parallel grooves F disposed in a vertical plane passing through the axis of the drum. The yarn guide D comprises a stem portion the outer end of which is bent to a hook-form with a free end bent at right angles to the stem.
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en
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GB-771731-A
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GB-2179655-A
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GB
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A
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A
| null | 1955-07-28
| null |
A61K9/06
| null |
A veterinary medicine
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en
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A veterinary medicine for treating parasitic diseases of birds comprises a mixture of linseed oil, oil of creosote and paraffin. The mixture may be used to disinfect cages and houses for birds by pouring it into crevices where parasites are likely to be found.
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en
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GB-994427-A
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GB-2181361-A
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GB
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A
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A
| null | 1961-06-16
| null |
F24B1/08
| null |
Solid fuel fired stove or similar space heating device
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en
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994,427. Solid fuel fired stove. BECKERS HAARDENFABRIEK N.V. June 16, 1961 [June 17, 1960], No. 21813/61. Heading F4W. In a solid fuel stove or fireplace, a plate 5 arranged between a fuel supply space and the front of the stove above the grate 3 is adjustable to different angles with the horizontal and has upper and lower edges of different configurations so that the range of adjustment is increased. The plate 5 rests against a ledge 7 with holes to permit the passage of combustion gases, and in notches 9 in the upper edge of a fire pot 3, to regulate the depth of fuel in the grate. The upper edge 10 and lower edge 11 of the plate 5, Fig. 2, are differently formed so that the depth of fuel may be adjusted by reversing the plate as well as by resting it in a different pair of notches 9. The side edges of the plate may be of differing configurations to give four possible ranges of adjustment.
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en
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GB-1004486-A
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GB-2194462-A
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GB
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A
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A
| 2742-12-20
| 1962-06-06
| null |
G03B21/32
| null |
Improvements in or relating to film projectors
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en
| null | null |
GB-492215-A
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GB-2194537-A
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GB
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A
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A
| null | 1937-08-09
| null |
C04B35/52
| null |
Improvements in or relating to refractory articles
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en
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A refractory article, e.g. a retort or crucible, having one or more carbon-containing constituents, e.g. graphite, silicon carbide, contains also an oxidic compound of copper, e.g. cupric oxide, to increase the resistance of the article to oxidation during use. The oxidic compound of copper may be incorporated in a ceramic bond distributed throughout the article, in a ceramic veneer or glaze, or in both. In an example, a raw mix comprises 17 parts of flake graphite, 50 parts of silicon carbide, 10 parts of ceramic bond and 23 parts of tar. The bond contains 11,3 per cent of cupric oxide. Other examples are given.
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en
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