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18
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20
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large_stringclasses 104
values | application_kind
large_stringclasses 18
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date32 | filing_date
date32 | grant_date
date32 | ipc
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⌀ | inventor_name
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100
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6.12k
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29.2k
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GB-1068269-A
|
GB-1299666-D
|
GB
|
A
|
D
| null | 1966-03-21
| null |
B26B19/04
| null |
Cutter head assembly for electric shavers
|
en
|
1,068,269. Dry shavers. SPERRY RAND CORPORATION. March 21, 1966 [April 2, 1965], No. 12296/66. Heading B4B. A cutter head assembly for an electric dry shaver comprises a plate 16 on which two cutter units 14, 15 are detachably mounted and on which skin-engaging means 40 is detachably positioned, the means 40 comprising lugs 60, 60<SP>1</SP> engaging recesses 61 (61<SP>1</SP>, Fig. 5) in the cutter units and being resiliently urged away from the plate 16 by a leaf spring 56. The lugs 60, 60<SP>1</SP> extend from a plastics member 42 inserted in a channel-shaped member 41 comprising a centre portion 44 and side walls 45 provided with apertures 46 and a slot 47 which are engaged by projections 48, 49 on the side walls of the member 42.
|
en
|
GB-1484643-A
|
GB-1299775-A
|
GB
|
A
|
A
| null | 1975-03-27
| null |
B01F15/06
| null |
Heat exchange apparatus
|
en
|
1484643 Mixing screw JUDE ENG INC 17 Dec 1975 [27 March 1975] 12997/75 Heading BIC [Also in Divisions B8 and F4] A hollow screw for a heat exchange apparatus suitable for mixing, conveying, drying, evaporation or calcining is fabricated from pairs of helically shaped radially split discs 10, 11, the disc 10 being shaped with its inner edge curved into the axial direction, and the other disc 11 of each pair having its outer edge curved towards the first disc, their respective inner and outer edges being welded together to form a passage 20 for a heat exchange fluid. The screw may be mounted in a hollow shaft 14, the ends of the screw being welded to the shaft leaving a space 24 and the screw resting on pins 23 of circular cross-section welded to the shaft. There is an inner hollow shaft 26 allowing heat exchange fluid to be circulated through the space 27. The apparatus may have two screws arranged to intermesh, see Figs. 3 and 4, not shown.
|
en
|
GB-1125493-A
|
GB-1306866-A
|
GB
|
A
|
A
| null | 1966-03-24
| null |
C25B9/19
|
PORCHER FREDERICK JAMES
|
Improvements in or relating to anode assemblies of electrolytic cells
|
en
|
1,125,493. Anode assemblies for electrolytic cells. IMPERIAL METAL INDUSTRIES, (KYNOCH) Ltd. March 3, 1967 [March 24, 1966], No. 13068/66. Heading C7B. An anode assembly for an electrolytic cell, e. g. for a chloralkali cell, comprises a base-plate of an electrically conductive metal which is not attacked by the electrolyte to be used in the cell, e.g. titanium, tantalum, nobium or alloys thereof alone or with minor amounts of zirconium; a plurality of anode plates, e. g. of graphite or of titanium or an alloy thereof having polarization properties similar to those of pure titanium and having a surface coating of a platinum group metal or an alloy or oxide thereof, e.g. of platinum or platinum-iridium alloy, which anode plates are releasably mounted on and attached in electrical contact with one surface of the base plate 1; and an electrical conductor or conductors e. g. of copper, aluminium or steel bonded in electrical contact with the other side of the base plate. As shown, anode plates 6 are bolted to anode supports 2 which are bonded to the base plate 1 which is in turn bonded to conductors 3 supported in support plate 4 of steel or concrete. Cathodes 13 are formed of steel gauze 12 coated with asbestos, which forms a diaphragm 14. The anodes 6 may be bolted direct on to the base plate 1, and if the conductor 3 is formed of steel said conductor may comprise a single plate bonded over the entire base plate. A tantalum-copper interlay may be formed between the steel and the base plate. The area of the anodes 6 and anode supports 2 which contact one another may be plated with platinium or coated with a conductive material.
|
en
|
GB-433771-A
|
GB-1311435-A
|
GB
|
A
|
A
| null | 1935-05-02
| null |
H01M6/00
| null |
Improvements in and relating to voltaic couples
|
en
|
433,771. Batteries. PLESSEY CO., Ltd., Vicarage Lane, Ilford, Essex.-(Mallory & Co., Inc., P. R. ; 3029, East Washington Street, Indianapolis, Indiana, U.S.A.) May 2, 1935, No. 13114. [Class 53] A voltaic couple particularly for applying a negative potential to the control grid of an electric discharge tube consists of an electrode of cadmium, aluminium, zinc or other electropositive material in contact with an electrode of solid chromium trioxide. The Figure shows two couples joined in series, each consisting of a cadmium disc 2 in contact with a pellet 3 of compressed chromium trioxide. The couples are separated by a nickel washer 4 and are pressed together by a spring 7. A fibre casing 1 is closed at each end by pitch 11. Specification 427,098 is referred to.
|
en
|
GB-987724-A
|
GB-1313163-A
|
GB
|
A
|
A
| null | 1963-04-03
| null |
B29B13/02
|
BRECKIN PETER HAROLD
|
Improvements in or relating to the manufacture of lampshades
|
en
|
987,724. Moulding lampshades. WARD & GOLDSTONE Ltd. March 18, 1964 [April 3, 1963], No. 13131/63. Heading B5A. A lampshade is formed from a pleated tubular blank 16 of a thermoplastic material, e.g. stiff polyvinylchloride, by placing the blank over a hollow stem 5, between a fixed concave former 9 and a slidable concave former 10, heating the blank, and then moving member 10 towards member 9 to force the heat softened blank outwards into contact with the formers as in Fig. 3. The blank is heated by immersing the assembly in a heated liquid bath, the hot liquid contacting the blank through holes 8 in the stem and holes 11 in the formers. Former 10 may be manually moved towards former 9 by a handle 14 or may be drawn towards it by a spring located between the end hub 7 of the stem 5 and the member 10.
|
en
|
GB-517666-A
|
GB-1315738-A
|
GB
|
A
|
A
| null | 1938-05-03
| null |
H04N5/265
| null |
Amplifier for television system
|
en
|
517,666. Television; valve amplifying circuits. PHILCO RADIO & TELEVISION CORPORATION. May 3, 1938, No. 13157. Convention date, May 25, 1937. [Classes 40 (iii) and 40 (v)] A video signal amplifier has its gain varied by a control signal and by manual means and is so arranged that the control signal together with any component thereof is eliminated from the output. The control signal may be a blanking out signal and a synchronizing signal may be combined with the amplifier output during the blanking out period. A composite signal amplifier may effect the combination and may be fed from a plurality of video signal amplifiers with common manually operable gain control means to provide a fade-over control. The Figure shows an amplifier which provides blanking out and fading control comprising identical valves, V1, V2, an auxiliary valve V3 and a phase inverter V4. In this way the output across the common load resistance R2 is unaffected by the gain control signal. The input signal may be applied only to the valve VI or to both V1, V2 in push-pull and the blanking-out signal to the valve V3 so that the common cathode resistance R1 reduces the gain of both valves VI, V2 to zero. Gain control by varying the bias applied to the valve V3 may be from a remote point and the time constant of the circuit RC is preferably such that the control is only effective in an appreciable interval. The gain or fading control may be effected by directly varying the bias of valves V1, V2 and the time of fade in may be different from the time of fade out. Specification 493,289 is referred to.
|
en
|
GB-123008-A
|
GB-1320418-A
|
GB
|
A
|
A
| null | 1918-08-14
| null |
B23D53/04
| null |
Improvements in or relating to Band Saws.
|
en
|
123,008. Atkins & Co., E. C., and Berry, R. C. Aug. 14, 1918. Work-holders.-In a sawing-machine the work is clamped on a table 44 between adjustable jaws 85, 90, of which the jaw 90 is pivoted on a pin 89 carried by a slide 88 movable in a slot 87 in the table, and is operated by a screw 91 which works in a nut carried by a bracket 95. A lug 96 depends from the bracket and through the slot 87 in the table 44, and a cross-pin 98 in the lug acts to clamp the bracket to the table when the screw 91 is operated to clamp the work.
|
en
|
GB-683872-A
|
GB-1321351-A
|
GB
|
A
|
A
| null | 1951-06-04
| null |
A61B17/28
| null |
Improved forceps
|
en
|
683,872. Surgical forceps. KOHLER, L. June 4, 1951 [June 2, 1950], No. 13213/51. Class 81 (ii). Forceps having parallel-motion jaws are provided with scissortype handles. In the simplest type the jaws 1, 2, actuated by a linkage 3, are connected to handles having finger and thumb loops 4, 5. The stems of the handles may be curved and the jaws may be shaped according to the purpose for which the forceps are to be used. If desired, variously shaped pairs of jaws may be supplied for interchangeable use with one pair of handles.
|
en
|
GB-1462412-A
|
GB-1322774-A
|
GB
|
A
|
A
| null | 1974-03-26
| null |
B66C23/687
| null |
Telescopic crane jibs
|
en
|
1462412 Telescopic crane jibs POTAIN 26 March 1974 [26 March 1973] 13227/74 Heading B8B A telescopic jib 5, shown combined with a mast 1 to form a crane, comprises a supporting tie 8, one end of which is screwed to the free end of the head of the jib 10 so that in use the jib 5 is subjected to compressive stress, the tie 8 including a cable arrangement 11 disposed between two sets of sheaves 12, 13 and a second cable arrangement 17 controlling the telescopic action of the jib 5, both cable arrangements being actuated from the same winch 16. The cable arrangement 11 is controlled by a cable 14 wound one way on a larger drum 15 of the winch 16 while the cable arrangement 17 is controlled by a cable 23 wound the other way on a smaller drum 26 of the winch 16. Thus, when the jib 5 is raised it contracts and when lowered it extends. A desired track for the load hook 27 can be obtained, for example substantially horizontal, Fig. 3 (not shown), by varying the ratio of the diameters of the drums 15, 26 and the number of falls in the cable arrangements 11, 17. The load hook 27 is supported by a cable 28 wound on a separate winch drum 33, independent of the winch 16, which may be operated simultaneously with the winch 16 to vary the trajectory of the load hook 27, if desired.
|
en
|
GB-1146032-A
|
GB-1324666-A
|
GB
|
A
|
A
| 7554-02-03
| 1966-03-25
| null |
H03F1/36
| null |
High-frequency amplifier circuit
|
en
|
1,146,032. Valve amplifying circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 25 March, 1966 [26 March, 1965], No. 13246/66. Heading H3W. [Also in Division H1] An aperiodic high frequency amplifier is provided with negative feedback by means of a pair of capacitors 6, 7, Fig. 1, which include, and may comprise only the valve capacitances, connected in series across the output and with the grid connected to their common point. Capacitors 6, 7 form, together with a pair of inductors 8, 9 also connected in series across the output, a balanced bridge network, points a, b being at the same potential. Inductor 9 comprises the outer of a length of coaxial cable, the inner conductor of which is connected to point a to supply signal to the grid; the output signal does not appear on this conductor, owing to the balanced nature of the bridge network. A screened resistor may be connected between points (a, b), (Fig. 2, not shown), to terminate the cable, and where the latter is short and may be regarded as lumped capacitance it may be built out with series inductance at both ends: inductance may likewise be added between the point (a) and the cable end corresponding to compensate for the capacitance 7. In a pushpull modification, Fig. 3, a transformer is used, the centre-tapped main winding 18 of which is connected between the valve anodes, while the grids are fed over two auxiliary windings 17, 17<SP>1</SP> each of which comprises a length of concentric cable.
|
en
|
GB-494273-A
|
GB-1329837-A
|
GB
|
A
|
A
| null | 1937-05-10
| null |
H01J25/54
| null |
Improvements in or relating to electron discharge device oscillators
|
en
|
494,273. Oscillation generators. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 10, 1937, No. 13298. Convention date, May 9, 1936. Addition to 494,230. [Classes 39 (i) and 40 (v)] In an oscillation generator wherein emission takes place by alternate periodic secondary emission from the two sides of one cathode or from two cathodes, the paths of the emitted clouds being maintained separate by a magnetic field as described in the parent Specification, stable working is maintained by including in the anode circuit a series limiting resistance W and by making the magnetic field vary with the anode current by passing this current through a coil SP surrounding the tube envelope R. An additional coil SP1 or a permanent magnet may be used with the coil SP. Condensers Ci, Ce shunt the resistance W and coil SP. The double-sided cathode K is surrounded by a split anode 81, S2, connected to an adjustable Lecher wire system. By using large condensers the stabilization is made sluggish. Curves with description are given to explain the working.
|
en
|
GB-578901-A
|
GB-1331744-A
|
GB
|
A
|
A
| null | 1944-07-12
| null |
B23K11/24
| null |
Improvements in generators of large pulses of electric current
|
en
|
578,901. Supply systems for resistance welding. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. July 12, 1944, No. 13317. [Classes 38 (ii) and 38 (iv)] A pulse generator, e.g. for welding operations, comprising a rectifier 10 which is supplied through a transformer 11 from an A.C. source and which is adapted to supply D.C. to the primary 16 of an output transformer 17, the secondary winding (not shown) of which supplies the current pulse to the load on current variation in the primary is characterised by the fact that the rectifier transformer 11 is tuned to resonance at the frequency of the A.C. source and thus serves as an energy-storing device, and also by the fact that control means are operable for " making " the D.C. circuit between the rectifier and the output transformer 17, thereby causing the stored energy to be applied to the transformer 17 as a pulse. The primary windings 12 of the rectifier transformer are connected through condensers 13 to obtain the required resonance. A group of auxiliary anodes 19 is connected through auxiliary secondary windings 20 and a choke 21 to an auxiliary primary winding 22 of transformer 17, the other terminal of which winding is connected to the rectifier cathode 18. This auxiliary primary 22 keeps the core of the output transformer almost completely saturated until the pulse is applied, when the core becomes saturated in the opposite sense, so that the flux alteration is substantially twice the saturation flux. The control grids 23 are normally supplied from the negative side of a battery 26, but when a pulse is desired, a source of positive grid bias 25 is inserted in series. This may be achieved by opening a switch 24, or, if periodic pulses are desired, by the circuit shown in Fig. 2, so that as the voltage increases in the primary 12, the D.C. output of rectifier 27 increases rapidly until the grids 23 become positive, at which point the main rectifier 10 operates, thereby supplying a pulse to transformer 17 and allowing the voltage in the primary 12 to fall.
|
en
|
GB-494027-A
|
GB-1335437-A
|
GB
|
A
|
A
| null | 1937-05-11
| null |
F16C37/00
| null |
Improvements relating to bearings
|
en
|
494,027. Cooling bearings. LAKE, A. T. May 11, 1937, No. 13354. [Class 12 (i)] A bearing brass for a fabric printing machine roller consists of a hollow bush a having a single longitudinal division extending along the greater part of its interior length to form two water passages b extending back and forth within the brass and having nipples d for the inlet and discharge of cooling water at one end of the brass. A quadrant plate e<1> having an oil groove f therein may be secured to the end of the brass, the nipples d extending therethrough.
|
en
|
GB-133897-A
|
GB-133897D-A
|
GB
|
A
|
A
| null | null | null |
F24F7/06
| null | null | null |
133,897. White, A. E., (Schelhammer, H.). March 26, 1919. Forced ventilation.-Fresh air supplied for ventilation withdraws air from the apartment ventilated, the resuming mixture being supplied to the apartment. The points of withdrawal and supply are at different levels so as to cause a circulation through the zone of occupancy. As shown in Fig. 1, air supplied by a fan is cleaned. attemperated, and humidified in an apparatus 2, and in passing the injector nozzle 4 withdraw air from the apartment through an openuig 6 controlled by a damper 7. The resulting mixture enters the apartment at 8. Fig. 3 shows an arrangement in which air supplied through the pipe 9 draws air through the vertical conduits 10 by means of injectors in their upper ends. To increase the injector action, the air may be caused to whirl in the conduit. Fig. 6 shows spiral vanes 13, 14 for this purpose, which may be either on the interior of the injector or conduit, or both, or on a conical member 16, Fig. 7.
|
en
|
GB-1579875-A
|
GB-1341377-A
|
GB
|
A
|
A
| null | 1977-03-30
| null |
A61F5/448
| null |
Coupling for an ostomy bag
|
en
| null | null |
GB-1464549-A
|
GB-1341573-A
|
GB
|
A
|
A
| null | 1973-03-20
| null |
E02F7/04
| null |
Underwater solids collecting apparatus
|
en
|
1464549 Air lift pumps INDUSTRY SECRETARY OF STATE FOR 20 March 1974 [20 March 1973] 13415/73 Heading F1R [Also in Division E1] A dredger comprises a hollow structure 1 having two intakes 4, an outlet 3 and a hopper 5. In operation the dredger is positioned on the bed by flooding the hollow structure after which an air lift pump induces sufficient water into the structure 1 through intakes 4 to carry over solid from the bed into the hopper. The air lift pump is formed by pumping air into the structure through an inlet 2 and allowing the air to pass out through the outlet 3. When the hopper is full, the outlet 3 is closed and air is continued to be pumped into the structure so that the dredger becomes buoyant and rises to the surface. A jet pump or centrifugal pump may also be used to induce solids into the hopper.
|
en
|
GB-135191-A
|
GB-135191D-A
|
GB
|
A
|
A
| null | null | null |
A01C9/04
| null | null | null |
135,191. Lippitz, W. Oct, 16, 1918, [Convention date]. Potato planters.-In a potato-planter having a planting-wheel in which distributing-chambers are formed by radial transverse partitions h and chord-like guide surfaces t, special means are provided for delivering the potatoes into the distributing-chambers. The wheel is made in the form of a hollow cylinder into which projects a cylindrical part. o of the box for holding the potatoes. The potatoes pass, one at a time, between angular blades b on the wheel, and are pushed by them through an opening in the part o on to surfaces s in the distributing-chambers. The distances between the blades themselves and between the blades and the cylinder o are simultaneously adjusted by turning the blades about their fixing- screws a. The blades b may be made extensible, and the cylinders o may be adjustable about the spindle w.
|
en
|
GB-1112291-A
|
GB-1354964-A
|
GB
|
A
|
A
| null | 1964-04-02
| null |
B60T13/565
|
FINEMAN HAROLD
|
Improvements in hydraulic braking systems
|
en
|
1,112,291. Fluid pressure brakes. GIRLING Ltd. 14 June, 1965 [2 April, 1964], No. 13549/64. Heading F2F. An hydraulic braking system comprises a booster in which a piston 12 in a primary cylinder 10 is actuated by a pedal to produce a fluidpressure which is transmitted to a secondary cylinder 25, feeding wheel brakes of a vehicle, in which a piston 26 is actuated by a booster energized by a rack 15 passing through the primary cylinder. As shown, the piston 12 is actuated through a rod 38 and fluid displaced from the primary cylinder 10 actuates the brakes on one pair of wheels through a pipe 39 and is permanently connected by a pipe 41 to the secondary cylinder 25 which is connected to another pair of wheel brakes. Leftward movement of the piston 12 and piston-rod 15 causes a valve seating 17 to close on a valve member 18 which is lifted from a seating 19 to admit air at atmospheric pressure to the right-hand side of a vacuum suspended piston 21 which then moves leftwards to-move the piston 26 displacing fluid from the secondary cylinder 25. Fluid in the system can be made up from a reservoir 42 communicating with the secondary cylinder through a passage 43 which is closed by a valve 44 when the piston 26 is moved leftwards. In another embodiment, Fig. 1 (not shown), the piston 12 is actuated by fluid pressure from a master cylinder.
|
en
|
GB-1042822-A
|
GB-1356163-A
|
GB
|
A
|
A
| null | 1963-04-05
| null |
G01S13/58
| null |
Radar system
|
en
|
1,042,822. Radar. CANADIAN PATENTS & DEVELOPMENT Ltd. April 5, 1963 [Aug. 31, 1962], No. 13561/63. Heading H4D. [Also in Division G4] A radar system comprises an aerial affording two mutually divergent pencil beams P1, P2, Fig. 1, rapidly scanning sequentially the azimuthal arc SR, Fig. 6a, a type-B display, Fig. 6c, displaying echoes E, E<SP>1</SP> of a mortar projectile as it passes through the beams, and an analogue computer which determines the range R m and azimuth A m of the source M<SP>1</SP>, Figs. 2, 3, of the projectile by extrapolation of the points a, b corresponding to projectile echo ranges R1, R2, and azimuths A 1 , A 2 , in accordance with the equations: where the synbols having the meanings: #R = R 1 - R 2 , #A = A 1 - A 2 , α is the angle between beams P1, P2, # is the angle beam P1 makes with the horizontal plane HP through the radar, # is the estimated angle of the projectile source below the horizontal, g is gravitational acceleration, and #T is the time interval between echoes E, E<SP>1</SP>. Aerial system. Fig. 1.-The aerial system affords a 1 degree pencil beam scanning alternately in planes P1, P2 separated (α) in elevation by some 2“ degrees, to produce effectively two fan-shaped beams each scanned 20 times per second, by means of a Foster.type soanner SC (see U.S.A. Specification 2,832,936) modified as described in " Electronics," Sept. 18, 1959, pages 34-36. Scanner SC is at the focus of a semi-parabolic cylinder RF, and the assembly is mounted on a platform AP on vehicle V, the platform being maintained horizontal as described in Specification 1,042,826; the assembly can be inclined relative to the platform to tilt the fan beams whilst maintaining α constant, and is rotatable in azimuth. Echo display and operator's procedure, Figs. 6c, 7d.-After detection of a firing on a smallscale type-B display, Figs. 6a, 6b, the operator enlarges the display scale, Fig. 6c; the composite display of all received echoes is as depicted in Fig. 7d. The operator chooses the points CML, CMU corresponding to lower and upper beams, each point being the mean of the centres of the lower leading edges of the first and last echoes. Screen S is provided with a writing surface. A hand switch HS is used to record the interval #T, taken between respective first echoes, by timer TM. An electronic marker, Fig. 7e (not shown), the position of which is adjustable conjointly by azimuth marker hand wheel AMH and range marker hand wheel RMH by means described in Canadian Specification 580,247, is first set on point CML and foot switch FS then depressed thus bringing the computer into operation (see below); switch FS is of the kind which remains closed until an ensuing depression which takes place when the electronic marker has been aligned with point CMU. Quantities #R, #A are thus fed into the computer. Analogue computer, Figs. 8, 10.-The analogue computer is shown schematically in Fig. 8 and comprises an electro-mechanical arrangement utilizing shaft rotations, mechanical differentials for adding purposes, and servo-controlled potentiometer wipers. The inputs set into Fig. 10 are: #, by shaft H10; #, by shaft H11 from hand wheel WPH; #T, by shaft H15 from the timer; and R m by shaft H9 from the apparatus of Fig. 9 (not shown); shaft H7 produces K<SP>1</SP> according to the aforementioned equation. In the apparatus of Fig. 10, shaft H12 represents (# + #) and a gear ratio is chosen to give (# + #)/α. The factor is derived in a bridge servo loop the inputs to which are R m at resistor R11, (K<SP>1</SP>+¢) at resistor RR12, and #T at resistor RR13; resistors RR12, RR13 are wound in a square-law manner, and resistors RR11, RR14 are linear. By appropriate proportioning of circuit constants the factor g/2α is taken into account. The apparatus of Fig. 11 (not shown) accepts A 1 , #A and K<SP>1</SP> to form A m and the apparatus of Fig. 9 forms R m . The computed values of A m and R m are displayed on respective counters CT1, CT6. Conversion of these polar coordinate quantities to cartesian co-ordinate is carried out utilizing a resolver, Fig. 12 (not shown), and the cartesian co-ordinates of the radar are added by handwheels REH, RNH; the final values are displayed on counters CT10, CT12 and are transmitted to the " friendly " gun site. Computation may be modified by neglecting curvature of the projectile trajectory and using a straight line extrapolation to f<SP>1</SP>, Fig. 2. Directing own fire, Figs. 2 and 8.-To facilitate control of the " friendly " gun when the shells used are fused for air bursting the operator inclines the working plane WP, Fig. 2, until the corresponding height appears in target elevation counter CT4. Re-setting of computer.-The computer is reset by further operation of foot switch FS and hand switch HS; completion of re-setting is indicated by a lamp LP2, Fig. 10. The azimuthal scan may be arranged to centralize the echoes on the display, Fig. 11 (not shown). The radar pulse repetition frequency is selectable, corresponding to long and short range operation.
|
en
|
GB-640754-A
|
GB-1356448-A
|
GB
|
A
|
A
| null | 1948-05-19
| null |
B26B13/20
| null |
Scissors with handles of thermoplastic material
|
en
|
640,754. Scissors. BRADLE, J. May 19, 1948, No. 13564. Convention date, June 3, 1947. Drawings to Specification. [Class 30] The handles of a pair of scissors are formed from thermoplastic material reinforced by tang-like extensions extending rearwardly from the blades.
|
en
|
GB-496922-A
|
GB-1357638-A
|
GB
|
A
|
A
| null | 1938-05-06
| null |
A01B33/14
| null |
Improvements in and relating to spring arrangements for the tools of motor driven machines for working the soil
|
en
|
496,922. Metallic springs. DUFOUR, L. May 6, 1938, No. 13576. [Class 108 (iii)] [Also in Group I] An agricultural implement is provided with a rotary tool which is mounted within a helical spring so that when an obstruction is encountered the tool moves backwards and compresses the spring. The tool is so mounted that when the obstruction is passed the tool is free to move to its normal position independently of the spring. Figs. 1 and 2 show a tool 15 mounted freely on a shaft 20 carried in bearings 23 in arms 18 through which the ends of a spring 12 pass. The ends of the spring also pass through apertures in lugs 25 on a holder 11 carried on the main shaft 10. The middle part of the spring is formed as a loop 14 which serves as a stop for the tool but in which the tool is freely movable. The ends 16 of the loop are close together and extend parallel to one another as shown at 19. The end convolutions of the spring pass over fixed projections 21. When the tool meets an obstruction it tensions the spring and moves backwards to a position B shown in Fig. 1. When the obstruction is passed the spring and tool return to their normal positions but the inertia of the tool causes it to continue its forward movement till it is stopped by the braking action of the parts 16, 19 of the spring. Fig. 3 shows a modification in which the main shaft 10 as well as the shaft 20 is situated within the spring. The holder 11 forms an additional positive stop for the tool. Fig. 6 shows a further modification in which resilient arms 27 attached to a stop 26 serve as a brake for the tool 15.
|
en
|
GB-1277986-A
|
GB-1359570-A
|
GB
|
A
|
A
| null | 1970-03-20
| null |
F16D65/28
|
ALLEN LAIRD ROBERT JR
|
Improvements in or relating to an electrohydraulic brake control system
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en
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1277986 Electrohydraulic systems; disc brakes; adjusting brakes for wear WESTING- HOUSE ELECTRIC CORP 20 March 1970 13595/70 Headings F2E and F2F A spring applied electrohydraulically released brake system 10 for a vehicle disc brake assembly 38, 40, 42 comprises a master cylinder 24 and a slave cylinder 30 in communication, to form an hydraulic circuit, the master piston 22 in the master cylinder 24 incorporating a valve 50 for cutting off flow of fluid between a reservoir 26 and the circuit, and a solenoid 14 adapted to operate the master piston 22 to apply pressure to the hydraulic circuit to move brake shoe 40 away from brake disc 42 against the force of a load spring 44, and release the brake. The solenoid 14 acts on an armature 16 through a gap 18 to move a thrust pin 23 to the right; a metal skin 20 is situated in the gap 18; these components may be formed as in Fig. 2 (not shown). As the master piston 22 is moved to the right by the thrust pin 23 the valve 50 is closed and the circuit pressure builds up to release the brake: as the brake shoe 40 wears the amount of fluid trapped in the circuit is reduced by the slave piston 31 forcing fluid back into the reservoir 26. Between the master cylinder 24 and the slave cylinder 30 the circuit is split into two branch conduits 35, 36 each containing a respective unidirectional valve 33, 34, which valves 33, 34 allow fluid flow in one and respectively opposite directions to thereby maintain a minimum pressure in the slave cylinder 30. In the event of a loss of pressure in the system causing the brakes to be applied a warning light may give indication to the vehicle operator. Alternatively a recycling circuit 60 may be used to automatically replenish the circuit in the event of a pressure drop. A pressure sensing chamber 65 acts to close contacts 63, 64 of a pressure sensitive switch 62. Closure of contacts 63 causes illumination of a warning lamp 71, and closure of contacts 64 causes solenoid 74 of a time delay relay 76 to close normally open contacts 75 and solenoid 78 of a time delay relay 79 to open normally closed contacts 80. Current is thereby cut off from a brake control means 68 and from solenoid 14, and the master piston 22 moves to the left, the valve 50 opens and the hydraulic circuit is replenished. This recycling operation is continued until sufficient pressure is present in the system to hold the brakes released. Brake shoes 40 may be applied to both sides of the disc 42, and the system is described as being particularly applicable to track vehicles.
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en
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GB-354751-A
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GB-1361730-A
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GB
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A
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A
| null | 1930-05-02
| null |
D21F1/18
| null |
Shake mechanism particularly applicable for fourdrinier paper machines
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en
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354,751. Linkwork. HORNBOSTEL, L., 720, Church Street, Beloit, Wisconsin, U.S.A. May 2, 1930, No. 13617. [Class 80 (iii).] A shake mechanism having means to vary the amplitude of the shake, applicable to a Fourdrinier papermaking machine, comprises a fixed crank shaft 22 connected by a bifurcated rod 27 to a cross pin 29 carrying a transmitting link 31 pivotally connected to a pin 32 on the arm 21 of the rock shaft 15, which transmits the motion to the machine. The pin 29 carries at each end a link 34 pivoted at the upper end to the end of an arm 36 of a yoke frame 37, mounted on fixed pivots 38. The yoke frame is adjusted about these pivots to vary the amplitude of the shake by a screw 41 and nut 44 turned in a fixed socket by a hand-wheel 49. When the frame 37 is adjusted to bring the upper pivots of the links 34 coaxial with the pin 32 the amplitude of the shake is zero. Movement of the pivots away from the axis of the pin increases the amplitude of the shake. The arrangement is such that all the transmitting parts are of fixed length and all the bearing parts are annular.
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en
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GB-171714-A
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GB-1374220-A
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GB
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A
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A
| null | 1920-05-19
| null |
A47C7/58
| null |
Improvements in and relating to seats or chairs for cinemas, theatres, concert hallsand the like places of entertainment
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en
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171,714. Jowett, R. May 19, 1920. Sliding and folding seats; seat-backs. - Chairs for cinemas, theatres, concert halls, &c. are provided with tilt-up seats which are slidable to a forward position when in use. The seats 2 are pivoted on horizontal rods 4 carried by runners 3 carrying antifriction rollers 6 working in downwardly inclined slots or grooves 7 of the side brackets 5 which may be common to two adjacent chairs, the rear rollers 6<a> being preferably mounted on the rods 4. Arm-rests 12 are mounted on supports 10 secured to the brackets 5. The back 14 is carried on arms 15 pivoted at 16 to the rear ends of the bars 3, and is kept vertical when the seat is unoccupied by means of a flat spring 17, or a spiral spring, or a counterweight with or without springs. The sliding seat may be pushed back to make room for passers-by without the user rising. A non- swinging back may be used.
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en
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GB-1104803-A
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GB-1376865-A
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GB
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A
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A
| null | 1965-03-31
| null |
F02F1/00
| null |
Improvements in removable cylinder liners for internal combustion engines
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en
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1, 104, 803. Cylinder liners. REGIE NATIONALE DES USINES RENAULT. March 31, 1965 [April 1, 1964], No. 13768/65. Heading F1B. A cylinder liner for an engine with a light metal cylinder block comprises an inner ferrous metal sleeve 1 and an outer light metal backing sleeve 6 of length substantially equal to the piston stroke. The sleeve 1 may have a rib 3 adapted to engage a shoulder in the cylinder block, or the sleeve 6 may directly engage the shoulder.
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en
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GB-594258-A
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GB-1386445-A
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GB
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A
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A
| null | 1945-06-01
| null |
G05B11/01
| null |
Improvements in contact arrangements applicable to electric follow-up switches
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en
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594,258. Hunting switches. PRECISION DEVELOPMENTS CO., Ltd., and OLAH, G. June 1, 1945, No. 13864. Addition to 556,288. [Class 38(v)] [Also in Group XXXVIII] In a modification of the follow-up switch described and claimed in the parent Specification, the contacts associated with the contact-carrying members and the additional member or members are constituted by intermeshing gear wheels, 24-27. The gear wheels 25, 26, are relatively insulated, are mounted on a common shaft, and have their teeth relatively offset by a fraction of the pitch so that when the driving wheel 27 is rotated clockwise, the backlash between it and wheel 26 is taken up and contact is made between the two wheels. Continued movement causes wheel 25 to contact the driven wheel 24. Counterclockwise movement of wheel 27 causes it to contact wheel 25 and wheel 26 to contact 24. The backlash between the teeth is greater than the amount by which the teeth of wheels 25, 26 are offset. The switch may control a servomotor and brake as in Specification 556,287 and arc quenching means such as those described in Specification 594,256 may be provided. Specification 594,257, [Group XXXVIII], also is referred to.
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en
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GB-563623-A
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GB-1390542-A
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GB
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A
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A
| null | 1942-10-03
| null |
H01J1/14
| null |
Improvements in or relating to cathodes for electron discharge devices
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en
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563,623. Discharge lamps. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 3, 1942, No. 13905. Convention date, Oct. 3, 1941. [Class 39 (i)] [Also in Group II] A cathode, particularly suitable for mercury vapour electron discharge devices, comprises a core of nickel or nickel with up to 50 per cent by weight of cobalt with a coating of an alkaline earth, such as barium oxide or a mixture of barium and strontium oxides, and includes small amounts of two reducing agents so chosen that upon activation an interface will be produced such that said coating will be firmly bonded to the core and undesired cooling of the cathode by heat radiation will be kept low or prevented. The core may consist of 0.05-0.30 per cent silicon, 0.10-0.40 carbon, and the balance substantially pure nickel or nickel with up to 50 per cent cobalt.
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en
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GB-348866-A
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GB-1391530-A
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GB
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A
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A
| null | 1930-05-06
| null |
C01B17/94
| null |
An improvement relating to the purification of sulphuric acid
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en
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Sulphuric acid having a concentration of higher than 60 per cent is freed from nitric acid constituents by adding a solution of sulphur dioxide in water or sulphuric acid and passing a current of indifferent gas, such as air or flue gas, through the resulting mixture at a raised temperature, say 100-200 DEG C.
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en
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GB-1093087-A
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GB-1404765-A
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GB
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A
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A
| null | 1965-04-02
| null |
F15B17/02
| null |
Hydraulic system
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en
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1,093,087. Power assisted steering mechanism. T.R.W. Inc. April 2, 1965 [April 2, 1964], No. 14047/65. Heading B7H. [Also in Divisions F2 and G3] An hydraulic servo-system for a vehicle steering gear comprises a double-acting pistoncylinder 35, 34 actuated by fluid from a pump 15 in accordance with the flow through an adjustable orifice 12 supplied from a control pump 11. The direction of movement of the piston is controlled by a valve 25 in accordance with direction of delivery of the pump 11. Assuming that the pump 11 is driven to draw liquid from conduit 27 and delivers to conduit 26, the pressure difference created between these two conduits acts in cylinders 41, 42 to move the valve 25 to the right thus connecting the pairs of conduits 32, 26, 33, 27, 30, 28 and 31, 29. The delivery of the control pump 11 thus flows through conduits 32, 38 and acts on a spring-loaded piston-cylinder 20 to open adjustable orifices 12, 16. The inlet 27 of pump 11 is thus connected to the outlet of pump 15 through conduit 30, orifice 16, and conduit 33. The piston-cylinder 20 is also connected to the downstream side of orifice 12 through conduit 39 and the two orifices 12, 16 are continuously adjusted in accordance with the pressure drop across the orifice 12. The opening of the orifice 16 also allows the delivery of the pump 15 to flow to the piston-cylinder 34, 35 and the delivery of the control pump 11 is also connected into the conduit 30. The delivery pressure of pumps 11 and 15 which act in cylinders 61, 60 to control a valve 54 which determines the pressures in the cylinders 52, 53 actuating the valve 51. If the pump 15 fails the piston-cylinder 35, 34 may be actuated directly by the pump 11 which will draw fluid past a non-return valve 66 and deliver to the piston-cylinder 35, 34 as above through conduit 37. When the pump 11 acts in the opposite direction, the valve 25 is moved to the left and the piston-cylinder 35, 34 is then moved to the left. The pump 11 may be a gear pump actuated by the vehicle steering wheel. The pump 15 may be a variable displacement pump especially when this pump is used to supply other circuits as well or alternatively the pump displacement may be varied instead of providing the valve 51. The orifices 12, 16 and cylinder 20 may be arranged as a unit. (See Division F2.)
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en
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GB-1529425-A
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GB-1406277-A
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GB
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A
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A
| null | 1977-04-04
| null |
C10B57/04
| null |
Production of pitch coke
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en
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1529425 Pitch coke BERGWERKSVERBAND GmbH 4 April 1977 [3 April 1976] 14062/77 Heading C5E A circular pitch coke is produced by coking a mix of at least two coal pitches, the mix having a viscosity of 50-200 cP at 250-260‹ C. and the pitches having been filtered above 100‹ C. and having differing K-S fusion points.
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en
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GB-956075-A
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GB-1407962-A
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GB
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A
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A
| null | 1962-04-11
| null |
C01B35/06
| null |
Improvements in or relating to the production of alkali metal fluoborates
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en
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Alkali metal fluoborate is produced by heating together an alkali metal fluoride or alkali metal acid fluoride, ammonium fluoride or ammonium acid fluoride and boric acid or boric oxide, until substantially all the ammonia and water formed have evaporated. The reactants may be brought together as aqueous solutions, or as slurries or may be reacted as solids. The amounts of the reactants are not critical but preferably should be in stoichiometric proportions. The alkali metal fluoborate obtained in the reaction product may be purified by crystallization from water.
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en
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GB-543203-A
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GB-1412440-A
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GB
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A
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A
| null | 1940-09-12
| null |
G05F3/06
| null |
Improvements relating to alternating current power distribution circuits
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en
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543,203. Electric distribution systems. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 12, 1940, No. 14124. Convention date, Sept. 12, 1939. Drawings to Specification. [Class 38 (iv)] Relates to distribution networks in which for power-factor improvement series capacitators are connected in the line through step-up transformers which become saturated only on overload In order to avoid the phenomenon of ferro-resonance in the transformer-capacity circuit resulting from heavy overload, which causes this circuit to act like an inductance instead of a capacitance and persists even when the shortcircuit or overload has gone and the line current has assumed a very low value, a resistance element of negative resistance-voltage characteristic is connected in the transformer-capacity circuit. The preferred resistance material is the graphite-silicon material described in Specification 292,110, [Class 38 (iv)], and known under the Registered Trade Mark " Thyrite ". It is so chosen that its resistance at the relatively high voltage across the transformer at resonance produces a current through it, when referred to the primary side of the transformer in excess of the full load rating of the transformer. The resistance may be connected (1) in parallel or in series with the condenser across the secondary of the transformer or (2) across the primary of the transformer.
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en
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GB-1062099-A
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GB-1412664-A
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GB
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A
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A
| 7046-11-05
| 1964-04-06
| null |
C01G31/00
| null |
Process for solubilizing vanadium and optionally for obtaining ammonium metavanadate or v o
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en
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Vanadium as alkali metal vanadate is recovered from vanadium bearing materials comprising slags, ores and residues by oxidizing a melt of the material, an alkali metal carbonate and an alkali metal chloride having weight ratio 1 : 1 : 0.5 to 1 : 0.5 : 1 respectively, with air or oxygen at above 400 DEG C., say between 600 DEG and 700 DEG C., and extracting alkali metal vanadate with, say, water. The oxidizing agent may be air, oxygen, or solid oxidant such as a chlorate, nitrate or peroxide. The melting can be effected by direct or indirect heating. Silica may be added to the material to be reacted. One part slag is crushed, mixed with 1 part sodium carbonate and 0.5 part sodium chloride, and melted in a rotary furnace by an oxidizing flame. Air is blown over the melt at 650 DEG C. for 30 minutes, and sodium vanadate extracted by stirring the melt in water at 80 DEG to 90 DEG C. in an iron vessel. The sodium vanadate solution may be adjusted to pH 3 to 7 e.g. 6.5, with a mineral acid and ammonium metavanadate precipitated by adding the ammonium salt of the acid employed at 80 DEG to 90 DEG C., maintaining said temperature for 1 hour before cooling. The salt may be separated, washed with cold water, the washings being returned to the iron dissolving vessel, dried and decomposed at above 300 DEG C., e.g. 450 DEG C., to powdered or at 700 DEG C. to molten vanadium pentoxide.
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en
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GB-792145-A
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GB-1417953-A
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GB
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A
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A
| null | 1953-05-20
| null |
H01H37/46
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EISLER PAUL
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Improvements in and relating to devices for obtaining a mechanical movement from theaction of an electric current
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en
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792,145. Temperature-responsive actuating-elements. TECHNOGRAPH PRINTED CIRCUITS, Ltd. May 20, 1954 [May 20, 1953], No. 14179/53. Class 64(2) [Also in Groups XX and XXIX] Heat from an electric current passing through a flat conductor 19 such as a printed strain gauge, e.g. produced as in Specification 639,178 [Group XXXVI], is distributed asymmetrically in an elastic member such as a bimetal (so that the high expansion part gets the greater share of heat) or such as a bar or disc loaded for snap-action (externally as in Fig. 13 or by inherent bowing) and the elastic member therefore bends or changes its convexity. In the bimetal shown in Fig. 8, an electric heater 19 is sandwiched between a brass layer 42 and a steel layer 43. It is electrically insulated from the brass layer by a layer 23 and thermally and electrically insulated from the steel by a layer 46. Two bimetals may be arranged to counteract the effect of ambient temperature, having their free ends joined by spring means, Fig. 6 (not shown), or, as in Fig. 7, the free end of one bimetal 37 may be attached to a sliding block in which is mounted another bimetal 38 bending in the opposite direction with temperature change. Either or each of the bimetals has a heater 19, which can be energized to deflect the free end of bimetal 38. In the case of the loaded, non-bimetallic members, the elastic member may be a metallic bar in two parts 21, Fig. 4, sandwiching the heater 19 and its electric insulation 23; it may be a simple bar 56, Fig. 13, or a bar in two parts 14,15, Fig. 2, with a sandwiched heat-insulating layer 16 and in either of these cases the heater 19 is mounted on a face of the bar but electrically insulated from it by a layer 18. In the case of a two-part bar, there may be heaters on two opposite faces, Fig. 14, (not shown), or a central layer of heat insulation, Fig. 15 (not shown), may have on each side, a heater, electrical insulation, then, outermost, the one or the other part of the bar, one heater being energized at a time. The bar is secured at one end or its middle, Fig. 9 (not shown), to allow movement of the free end or ends. In Fig. 13, heating causes bowing of the bar to be reversed and this position is then held, by the pressure of the spring 61 producing the bowing, when the heating ceases. Instead of a bar, a disc 54, Fig. 11, with a spiral or double spiral heater 19 may be used and may be radially loaded to produce bowing. To produce the differential expansion which changes the form, one part of the member may have a heat-insulating or heat-reflecting layer 25, Fig. 4; and the other part may have a heat-radiating surface. One part may be cooled by a flowing liquid 26 and the deformation used as an indication of the liquid flow or temperature. A heat-insulating layer may 'be placed adjacent one face of the sandwiched heater 19 and act also as its electric insulation at that'face, Fig. 10 (not shown). During the operation of the member, the heater 19 may function as a resistance thermometer or strain gauge (see Group XXXVIII). Specification 741,384 also is referred to.
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en
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GB-1035527-A
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GB-1417963-A
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GB
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A
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A
| null | 1963-04-09
| null |
D21G1/02
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JUSTUS EDGAR J
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Improvements in or relating to rolls mountings
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en
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1,035,527. Rollers. BELOIT CORPORATION. April 9, 1963, No. 14179/63. Heading F2U. [Also in Division D2] A roller is provided with rigid re-entrant sleeve portions 11d, 11e radially spaced from both the outer shell 11c and the supporting shaft 14, and extending inwardly from each end for about one quarter the length of the roller to engage bearings 16a, 16b on the shaft, whereby when the roller is under transverse load the sleeves set up internal counterbending moments to reduce the central deflection of the roller. As shown, the ends of the sleeves and roller shell are integral, but they may be separate and secured together by bolting, Figs. 8 and 9 (not shown); also the shaft 14 is stationary and carried by end supports 15a, 15b, but the inner end of each sleeve may be connected by a roller bush mounting to the central shaft which rotates in external end bearings, Fig. 5 (not shown).
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en
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GB-138799-A
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GB-1418219-A
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GB
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A
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A
| null | 1919-06-04
| null |
C04B33/13
| null |
Process for production of artificial stone or slabs of marble-like appearance
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en
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138,799. Gronroos, H. June 4, 1919. Stone, artificial.-Nearly equal parts of porcelain or faience refuse, powdered pipe clay, and crushed glass are mixed together with a little water and poured into a mould the bottom of which is covered with crushed glass. Pressure of about 2850 lb. per square inch is applied, and the material is then exposed to a temperature of 900-1200‹ C. to produce an artificial stone or marble-like slab having a glazed surface. Variegated effects are produced by using glass of various colours.
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en
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GB-582613-A
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GB-1422244-A
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GB
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A
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A
| null | 1944-07-25
| null |
H01B13/30
| null |
An improved method of and apparatus for the manufacture of electric power cables
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en
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582,613. Making impregnated cables. OKONITE-CALLENDER CABLE CO., Inc. July 25, 1944, No. 14222. Convention date, Aug. 3, 1943. [Class 36] A power cable with impregnated paper insulation within a lead sheath is dried, evacuated, impregnated and sheathed as a substantially continuous operation whilst the cable is advanced unreeled and preferably in a straight line. The cable 2, comprising a stranded conductor 4 with paper insulation 6 and helical metal shielding tape 8 is passed through a stuffing-box 12 into a chamber 10 having a vacuum pump 14 and a drier comprising a source 28 of high frequency. Then it passes through another stuffing-box 12 into chamber 16 where it is impregnated by fluid maintained under pressure by pump 20. Then through stuffing-box 18 into the cooling chamber 22 containing a coil 24 and finally into a lead press 26 which applies the sheath.
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en
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GB-898854-A
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GB-1424760-A
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GB
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A
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A
| null | 1960-04-22
| null |
A61K31/16
| null |
Therapeutic compositions for the treatment of anxiety states
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en
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A therapeutic composition for the treatment of mental diseases in humans, loss of egg production in poultry, loss of milk in dairy cattle and loss of weight on shipment in dairy cattle, comprises 3-methyl-2-phenyl butyramide and a carrier (other than aqueous, ethanolic and acetone solutions) which, in the case of animals, may be an animal feed. The compositions may take the form of tablets, pills, capsules, powders, granules, sterile parenteral solutions or suspensions and oral liquid forms such as aqueous solutions, aqueous or oil suspensions, emulsions, syrups and elixirs in which the vehicle is an aqueous alcohol. The pill or tablet may be two component separated by an enteric layer. Dispersing, wetting, preserving and isotonic agents may also be present in appropriate pharmaceutical forms together with conventional adjuvants. Optional additions are (a) barbiturates such as barbital, mephobarbital, phenobarbital, annobarbital, butabarbital, pentobarbital, secobarbital sodium, hexobarbital sodium and thiopental sodium; (b) tranquillizers such as reserpine, chlorpropazine, promethazine, benactyzine, (2 - ethylcrotonyl) urea, imipramine and meprobamate; (c) analgesics such as aspirin, phenacetin, salicylamide and N - acetyl - p-aminophenol; (d) stimulants such as amphetamine, 2 - dimethylaminoethanol, pipradol, methylphenidyl and iproniazid; (e) vitamins such as A, D, B1, B2, B6, B12, pantothenate, ascorbic acid, folic acid and nicotinamide; (f) hormones such as estradiol and methyltestosterone; (g) anticonvulsants such as diphenylhydantoin, paramethadione, phenylacetylurea, phensuximide, primidone and trimethadione.
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en
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GB-541136-A
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GB-1432540-A
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GB
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A
|
A
| null | 1940-09-18
| null |
B66C23/48
| null |
Improvements in and relating to mobile cranes
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en
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541,136. Jib cranes. BAXTER, J. Sept. 18, 1940, No. 14325. [Class 78 (iii)] A mobile crane, particularly intended for lifting engines out of vehicles, is provided with a cantilever jib 9 having a lifting hook 15 at one end and a connection at the other to a manually operated jack. The jib is pivoted to the upper end of a column 4 which is carried by a wheeled base and supports a hydraulic or other jack 18 connected to the jib through a lever 12 and a turnbuckle 16. The jack is supported by a chain 20 having vertically adjustable pivots.
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en
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GB-657293-A
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GB-1432747-A
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GB
|
A
|
A
| null | 1947-05-29
| null |
C03B15/06
| null |
A method and apparatus for forming ribbons of glass and similar plastic material
|
en
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<PICT:0657293/IV (a)/1> <PICT:0657293/IV (a)/2> <PICT:0657293/IV (a)/3> <PICT:0657293/IV (a)/4> A ribbon of organic thermoplastic or thermosetting material is made, the ribbon being thicker than is desired in the finished form, and is then passed between opposed cooling members which vibrate rapidly to and from each other and reduce the thickness of the ribbon. Fig. 1 shows an apparatus comprising a tank 10 from which a ribbon of thermoplastic material 14 is drawn by rollers 15, the ribbon being flattened, whilst it is setting, by rapidly-reciprocating hollow cooled platens 16. The platens are carried by sliding brackets 20 which are reciprocated by cranked shafts 22. In another arrangement (Fig. 4, not shown) the feed is vertically downwardly from the tank and the ribbon, after having been pressed between vertically-arranged cooled reciprocating platens, is bent around a roll and carried away horizontally. Fig. 5 shows two curved platens, the platen 51 being stationary and the platen 50 being reciprocated by an eccentric 55; or both of these platens may reciprocate. If the material to be sheeted is thermosetting, the platens are heated. The platens may be of thin metal reinforced internally by struts. The Specification as open to inspection under Sect. 91 describes also the production of sheets, and states that continuous prisms may be formed on one face of the ribbon by using a platen 441, Fig. 7 (Cancelled), having a suitably-shaped forming surface 46; and that the arrangement shown in Fig. 5 (Cancelled) may be used, in which molten material 38 passes under a control gate 39, between sheeting rolls 41, 42, over rolls 43 and between horizontally-arranged reciprocating platens 44, 441. This subject-matter does not appear in the Specification as accepted.
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en
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GB-606499-A
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GB-1436844-A
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GB
|
A
|
A
| 2203-09-04
| 1944-07-27
| null |
B65G59/10
| null |
Dispensing apparatus
|
en
|
606,499. Dispensing cup-shaped articles. LILY-TULIP CUP CORPORATION. July 27, 1944, No. 14368. Convention date, Oct. 9, 1943. (Class 78 (i)] In dispensing apparatus of the multistack type, wherein cup-shaped articles are dispensed successively in an axial direction from a stack of nested articles and wherein when such stack has been depleted to a predetermined extent another stack, is moved into dispensing position, a plurality of vertical stacks of cups are adapted to be moved along a predetermined path to a dispensing station which is so disposed that additional stacks' can be loaded into the apparatus without disturbing the articles at the dispensing station. The stacks S, Fig. 2, of nested cups C rest on a plate 21 secured to the bottom of a turret 16 which is carried by a spindle 13 rotatably mounted in the base-plate 9. The stacks are partially received in recesses 22, Fig. 1, in the turret and are prevented from falling outwards by a casing 24. A second casing 25 containing a turret 16a is mounted similarly on the plate 9 and communicates with the casing 24. The passage of stacks from one casing to the other takes place over plates 39, 40 and from the casing 24 to the dispensing unit 2 over a plate 41 on to which they are deflected by a cam 42. The stack is supported in the dispensing unit by cam members 45 which are turned to release the lowest cup by turning an arm 46. The spindles 13, 13a of the turrets carry gears 48, 52 which are connected by gears 49, 50. The gear 52 is connected by gears 53, 55 to a gear segment 56 on a pivoted arm 57. Helical tension springs 60 connect the arms to anchorages 61 on the plate 9. An escapement wheel 62 mounted on the spindle 13a has teeth equal in number to the number of recesses 22 and is engaged by an escapement pawl 64 actuated by a solenoid 67. By this means a complete reciprocation of the arm allows two increments of movement of the wheel 62. The solenoid circuit is controlled by a switch 69, Fig. 2, which is actuated by a pin 71 adjustably mounted in the arm 72 of a two-armed pivoted member, the other arm 75 of which is adjacent to the stack in the unit. The distance between the lower end of the arm 75, which is below the upper surface of the plate 21, and the cams 45 determines the number of cups remaining in the unit at the time that a fresh stack is fed into it. In order that the arm 75 may not interfere with the downward movement of the stack, the arm 72 is locked in the raised position by a plate 76, Fig. 4, pivoted at 77 which rests on the arm 46. As this arm is moved, the plate is lowered and the arm 72 is freed. The apparatus is loaded with stacks by inserting them through a door 31 in the casing and rotating the turret by a hand-wheel 80. While this is being done the arm 46 is in the position shown in broken lines in Fig. 4, so that the switch 69 cannot be actuated. During this operation the rotation of the spindle 13a effects the tensioning of the springs 60. When nine stacks have been inserted, the arm 46 is moved to the right, Fig. 4, and the spring 74 forces the arm 72 downwards to close the switch 69 and energize the solenoid 67. Since the resultant movement of the arm 64 allows the spring 60 to turn the turret through an angular distance corresponding to one stack, a stack is transferred to the unit 2. In a modification (not shown) a single turret is used which is driven by a clock spring. In another modification the stacks rest on a table, over which they are moved by the turrets. In a further modification, four turrets, similar to the turrets 16, 16a are used. U.S.A. Specification 2,268,421 is referred to.
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en
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GB-420076-A
|
GB-1445933-A
|
GB
|
A
|
A
| null | 1933-05-18
| null |
A45C11/04
| null |
Improvements in and relating to cases for spectacles, eye glasses and other articles
|
en
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420,076. Cases; purses; handbags. LOUCH, H. T., 36, Basinghall Street, London. May 18, 1933, No. 14459. [Classes 18 and 133] [See also Group XXV] A spectacle case, purse, handbag, &c., consists of a body and a cover connected by a strip of spring material 5 extending the full length of one side. The spring either opens the case when the catch is released or alternatively holds it closed. The case may be stamped from a single blank of sheet metal embodying the spring strip. As shown, the case has an internal receptacle 3 which is raised by links 8, 9, 12, 13 when the case is opened. The case is fastened by knobs 6, 7 and may have an external clip for attaching to a garment.
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en
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GB-542400-A
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GB-1447840-A
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GB
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A
|
A
| null | 1940-09-23
| null |
D06B5/20
| null |
Improvements in the treatment of textile materials
|
en
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542,400. Treating textiles with liquids. TURBULAYR PRODUCTS, Ltd., OLIVER, W., and MARSDEN, J. P. Sept. 23, 1940, No. 14478. [Class 15 (i)] In apparatus for treating textile materials with liquid by directing air currents from the base and sides of the vat, the' materials are placed in detachable cages 28, 29, 30, Fig. 7, having grid floors and provided with feet 37 arranged so as to permit the cages to nest, catches 34 being provided to hold a set together. The vat is fitted with perforated pipes near the floor and at the sides, compressed air being fed by connections with a distributing valve 4.
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en
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GB-1389471-A
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GB-1450672-A
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GB
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A
|
A
| null | 1972-03-28
| null |
G01J3/28
| null |
Fixed bandwidth target
|
en
|
1389471 Sensitometry XEROX CORP 28 March 1972 [1 April 1971] 14506/72 Heading G2X A slit of predetermined band-width formed in a semi-transparent film on a light transmitting support and covered with a mask of varying optical density is used to form an image on a xerographic plate in a sensitometrical test.
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en
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GB-480073-A
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GB-1458637-A
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GB
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A
|
A
| null | 1937-05-26
| null |
H01J29/66
| null |
Improvements in cathode ray tubes
|
en
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480,073. Cathode-ray tubes. FARIVTSWORTH TELEVISION, Inc. May 26, 1937 No. 14586. Convention date, June 1, 1936. [Class 39 (i)] A cathode-ray tube is provided with an electromagnetic focusing coil 8 which is supported within the enclosing vessel 1 of the cathode-ray tube, being coaxially positioned with respect to the cathode 4 and located between the cathode and fluorescent screen in a gas-tight enclosure 9 which separates the ,coil from the main enclosure of the tube. The enclosure 9, which is of glass; is of annular shape, the tube anode 7 being firmly fixed in its central aperture.
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en
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GB-969636-A
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GB-1459061-A
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GB
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A
|
A
| null | 1961-04-21
| null |
C08L63/00
| null |
Improved anti-static phonograph records and a method of making same
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en
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Antistatic gramophone records are formed from a mixture comprising a vinyl chloride polymer or copolymer, a quaternary ammonium antistatic agent, a neutralizing agent containing epoxy groups and a metallic soap as thermal stabilizer. The epoxy compound may be a resin of molecular weight 340 to 8,000 formed from epichlorhydrin and bisphenol A. The antistatic agent may be of formula: <FORM:0969636/C3/1> where m is 0 or 1, R is an aliphatic or cycloaliphatic radical, R1, R11 and R111 are alkyl, hydroxyalkyl, alkenyl or aralkyl and A is an anionic group. Specified metal soaps are cadmium stearate and cadmium alkyl aryl phosphites. Examples describe the formation of records from compositions comprising vinyl chloride-vinyl acetate copolymer, epoxy resin, stearamidopropyldimethyl-b -hydroxyethyl ammonium nitrate, carbon black and (1) cadmium stearate and (2) cadmium octylphenyl phosphite using a master batch of the antistatic and neutralizing agents with part of the copolymer.
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en
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GB-1214513-A
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GB-1462868-A
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GB
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A
|
A
| 7461-09-07
| 1968-03-27
| null |
C07C2/44
| null |
Process for the catalytic dimerisation of 1,3-diolefins
|
en
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1,214,513. Dimerizing dienes; cyclobulane derivatives. STUDIENGESELLSCHAFT KOHLE m.b.H. 27 March, 1968 [8 April, 1967], No. 14628/68. Heading C5E. 1,3 - Dienes are cylodimerized by contact with a catalyst prepared by either (1) mixing a reducible nickel compound with an electron donor and a metal, metal hydride or halogenfree organometallic compound, having in each case a reducing action on the nickel compound, or (2) mixing a nickel complex compound containing zero-valent nickel with an electron donor. The cyclodimerization is conducted under conditions resulting in incomplete conversion of the diene. Suitable catalysts are formed from these components: nickel acetylacetonate / diethyl aluminium ethoxyl / tri- (o - phenyl - phenyl) phosphite (i.e. type 1), and bis (cyclooctadienyl) nickel / tri - (o - phenylphenyl) phosphite (i.e. type 2). In examples: (1-5, 8, 11 - 12) butadiene yields mainly cis-divinylcyclobutane and cyclooctadiene; (6 and 7) butadiene yields the same plus 4-vinylcyclohexene; (9) piperylene yields mainly dimethylcyclooctadiene and a mixture of the novel compounds 1,2 - cis - divinyl - 3,4 - dimethylcyclobutane and 1 - propenyl - 2 - vinyl- 3 - methyl - cyclobutane; and (10) a butadiene/ 2-butyne mixture yields mainly cis-divinylcyclobutane, cyclooctadiene, and dimethylcyclodecatriene.
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en
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GB-890587-A
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GB-1467759-A
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GB
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A
|
A
| null | 1959-04-29
| null |
E02F5/14
|
ALLEN JOHN DRYDEN CULLIMORE
|
Improvements in or relating to trenching machines
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en
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890,587. Trench-digging machines. ALLEN & SONS (OXFORD) Ltd., JOHN. April 27, 1960 [April 29, 1959], No. 14677/59. Class 68(1). Incorporated in a trench-digging machine are means, preferably an electrical servomotor system, for automatically controlling the means for raising and lowering the trench excavating unit to maintain a predetermined level or slope of the bottom of the trench being excavated irrespective of variation of the surface contours of the ground. The control means consists of a sliding shoe 33 pivoted at 34 to a lever 35 rotatable about an axis 36 to control an electronic signalling device 37 for signalling any rotational movement of the arm 35 about the axis 36. The device 37 is rigidly secured to the bucket wheel or bucket chain-supporting boom that constitutes the vertically movable excavator unit. The signals from the device 37 are fed by electrical circuitry to electrical control means regulating the boom-adjusting jacks 19.
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en
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GB-354403-A
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GB-1469530-A
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GB
|
A
|
A
| null | 1930-05-13
| null |
B01F11/00
| null |
Improvements in devices for blending, mixing, agitating and aerating liquids and kindred uses
|
en
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354,403. Mixing-appliances. LEE, W. H. CARTER-, 7, Churchbury Road, Enfield, Middlesex. May 13, 1930, No. 14695. [Class 86.] In a device for blending, mixing, agitating and aerating liquids, &c., of the kind comprising a plunger working in a vessel having a removable corrugated base the shape of which is complemental to the plunger, the plunger has a central domed portion with concentric corrugations which, in cross section, are symmetrical about a line parallel with the plunger ; the base may be replaced by a funnel for extruding the contents, and the upper end of the vessel is closed by a removable basin-like lid with a filling aperture. The central domed part of the plunger 8 is higher than the corrugations the walls of which are provided with holes 10. The flange 9 may be omitted and the edge of the plunger serrated. The base 13, provided with complemental corrugations, is provided with a packing ring 15 which is compressed by a disc 14 and screw 21. The lid 2 has an aperture 6 by means of which the white of an egg may be separated from the yolk. When a funnel is applied to the lower end a disc may be provided on the plunger.
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en
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GB-542370-A
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GB-1471140-A
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GB
|
A
|
A
| null | 1940-09-30
| null |
H02K1/27
| null |
Improvements in dynamo-machines having permanent magnet excitation
|
en
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542,370. Dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 30, 1940. No. 14711. Convention date, Sept. 30, 1939. [Class 35] . [Also in Group XXII] In a dynamo-electric machine having an excitation system including permanent magnet pole pieces, a pre-fabricated sleeve surrounds the pole pieces in intimate contact therewith and comprises pole faces of magnetic material and interconnecting members of non-magnetic material. The shaft 14 has a cylindrical member 13, made of a magnetic alloy, cast thereon to form the pole pieces; and a sleeve is secured thereon the sleeve having pole faces 17, 18 welded to interconnecting non-magnetic pieces 19, 20. In a modification the core is a fattened cylinder the sleeve being shaped to match. To prevent displacement, the shaft is provided with. grooves into which the metal of the core enters during casting. Specification 423,897, [Group II], is referred to.
|
en
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GB-150102-A
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GB-1472419-A
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GB
|
A
|
A
| null | 1919-06-11
| null |
G05D16/06
| null |
Improvements in diaphragm gas governors
|
en
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150,102. Milne & Son, J., and Staniforth, H. June 11, 1919. Pressure-regulating valvcs; casings.-In a diaphragm-actuated gas-governor, the diaphragm is secured in position by means of a loose gasket ring clamped between upper and lower sheet metal plates. The leather diaphragm 1 is strengthened by plate 14 and is adjustably connected to the valve 6 by nuts 7. The diaphragm is held against a dished sheet-metal part 3 secured to the main part of the casing 5, by a ring 4 pressed down by bolts 15 engaging flanges on the part 3 and on an upper sheet-metal cover 2. The upper cover carries a fitting 8 adapted to house a non-rotatable spring abutment 10 for the loading-spring 12 adjusted by a screw rotatably mounted on a cover 9.
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en
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GB-241491-A
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GB-1473225-A
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GB
|
A
|
A
| null | 1925-06-06
| null |
F24C15/32
| null |
Improvements in gas cooking stoves
|
en
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241,491. Marwood, F. T. June 6, 1925. Addition to 197,543. Gas cooking-stoves; ovens.-To prevent entry of combustion products into the room, the stove described in the parent Specification is provided with a flue D extending along the side and rear walls, the gases passing from the apertures c<2> to the flue and thence to a branch d connected to the chimney. The ovens may be ventilated by one or more apertures b, through which steam &c. passes to the flue.
|
en
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GB-1283652-A
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GB-1488570-A
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GB
|
A
|
A
| null | 1970-03-26
| null |
G03G5/05
|
MERRILL STEWART HENRY
|
Photoconductive compositions
|
en
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1283652 Photoconductive composition EASTMAN KODAK CO 26 March 1970 [7 April 1969] 14885/70 Heading H1K A photoconductive composition comprises a photoconductor and a haloarylketone-formaldehyde resin. The preferred haloaryl ketones are m- or p-chloro, p-bromo or 3,4-dichloro-acetophenone. Many inorganic and organic photoconductors are specified, as are many supports for the composition.
|
en
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GB-181343-A
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GB-1490922-A
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GB
|
A
|
A
| null | 1922-05-26
| null |
F24H1/10
| null | null | null |
181,343. Hydrotherm Fabrik Elektrischer Apparate Ges., (Assignees of Joeschke, F., and Mentzel, R.). June 8, 1921, [Convention date]. Heating by electricity.-An electrically heated hot-water supply having joint control of the water inlet cock and current switch, is provided with a rotary valve having a peripheral channel shaped so that a fine control of the flow to the heating coil is obtained. The heater is in two parts, the lower part B containing the heater C having water channels S and resistance coil; the upper part A carries a conical inlet valve D on the spindle O of which is also the switch control F, of the spring leads F. The valve has a conical peripheral channel K whereby on rotation the lead to passage N is controlled. The channels S form a continuous system in the block C lying in concentric circles and are coupled together at the top or bottom. The block is held by bolts against end packing rings M and is insulated at the sides by packing H. The outlet for the heated water is at P.
|
en
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GB-1261797-A
|
GB-1492369-A
|
GB
|
A
|
A
| null | 1969-03-21
| null |
F23D14/04
| null |
Gas burner
|
en
|
1,261,797. Gas burner. D. FERROLI, [trading as FERROLI-GAS S.n.c.] 21 March, 1969 [26 March, 1968], No. 14923/69. Heading F4T. A gas burner comprises a plurality of parallel members 20, each of stainless steel sheet, bent and stamped to form an upwardly open throat 23 with a plurality of holes or nozzles 25 at its base, the walls of the throat being parallel and spaced apart by substantially the width of the holes 25, and a hollow portion 24 closed by seams 26 and having flanges 27, (28), about a central base opening connected to a common manifold supplied with a mixture of gas and air. Projections 29 space the members 20 laterally. In a second embodiment, Figs. 4, 8-10 (not shown), one metal sheet is formed as a U and a second M-shaped sheet forming the throat portion 23 is secured to the limbs of the U, thereby eliminating the base seam 26. The two portions may be formed of different material.
|
en
|
GB-560413-A
|
GB-1499642-A
|
GB
|
A
|
A
| null | 1942-10-26
| null |
H02G3/16
| null |
Improvements in or relating to junction boxes for electric cables
|
en
|
560,413. Junction boxes ; binding-posts. GENERAL ELECTRIC CO., Ltd., FLOWER, F. W., and WHEATLEY, P. K. Oct. 26, 1942, No. 14996. [Class 38 (i)] A junction box for connecting branch conductors 18 to insulated main cables 5 comprises a base 1 carrying terminals having grooves 4 in which the cables 5 are received and with which are associated pointed members 7 that penetrate the insulation of the main cables when these are pressed into the grooves, the terminals also having means 17 for securing the branch conductors 18. The pressure may be applied to the main cables by an annular projection 9 on the cover 8 which is attached to the box 1 by a stem 10 screwing into a central boss 11 in the box. Alternatively an annular member separate from the cover may be screwed over the boss 11 or pressed down by the cover on to the cables. In another modification the pointed members 7 may be replaced by pointed screws inserted obliquely in one side of the grooves 4 to press on the cable therein.
|
en
|
GB-692718-A
|
GB-1502350-A
|
GB
|
A
|
A
| null | 1950-06-16
| null |
H01J5/28
|
CHILCOTT ARTHUR LESLIE
|
Improvements relating to methods of manufacturing gas-tight vessels
|
en
|
692,718. Discharge apparatus. FERRANTI, Ltd. June 18, 1951 [June 16, 1950], No. 15023/50. Class 39(i) The external anode 30 of a thermionic discharge tube has an indented collar 32 against which is located a ceramic ring 34 through which passes a further conductive cylinder 33; the clearance spaces between the ceramic ring and each metallic cylinder are closed by fused glass 47 or other sealing material which is sufficiently viscous in the molten state for it not to be sucked through into the interior of the valve even when the latter is exhausted. Thus during processing, the outgassing temperature may be raised above the fusing temperature of the glass seals; it is stated that as high as 900‹C the molten glass will be too viscous to be sucked completely through a clearance space of .002 in. The inner cylinder 33 supports the grid 33<SP>1</SP>, and has a shoulder 36 bearing against ceramic ring 34. The construction applied to cylinder 30 is also applied to cylinder 33; thus it also has an indented collar 37 against which is located a ceramic plug 43 through which passes the cathode leads 42, 45, the clearance spaces being sealed by fused glass 46 as before. Fig. 1 (not shown) is a simpler tube construction in which the above sealing technique is applied to a cold-cathode gas-filled diode in which the outer metallic envelope forms the cathode.
|
en
|
GB-1509793-A
|
GB-1503875-A
|
GB
|
A
|
A
| null | 1975-04-11
| null |
B23B31/10
| null |
Collet pads
|
en
| null | null |
GB-597657-A
|
GB-1515045-A
|
GB
|
A
|
A
| null | 1945-06-14
| null |
F02D11/00
| null |
Improvements in marine anti-fouling agents
|
en
|
An anti-fouling protective coating composition comprises a paint, varnish or lacquer and a proportion of at least ten per cent. by weight thereof of a phenyl mercury compound. Specified phenyl-mercury compounds are the borate, phthalate, chromate and salicylate. Paint vehicles specified are natural gum spirit solutions and chlorinated rubber. Corrosion inhibitors such as the chromates may be present, specified are the barium, strontium, calcium, magnesium, aluminium, lithium and zinc tetraoxy chromates.ALSO:An anti-fouling protective coating composition contains at least ten per cent by weight of the vehicle of a phenyl mercury compound. Specified vehicles are cellulose derivatives, the glycerol phthalate oil modified resins, pure oil soluble phenolic condensation products such as the para-phenyl phenol formaldehyde condensation product, the acrylic ester resins particularly the mixed butyl and isobutyl methacrylate, and vinyl chloride-vinyl acetate copolymers. Specified phenyl mercury compounds are the borate, phthalate, chromate and salicylate. Corrosion inhibitors such as the chromates may be present-specified are the strontium, barium, calcium, magnesium, lithium, aluminium and zinc tetraoxy chromates.ALSO:An anti-fouling protective coating composition comprises a paint, varnish or lacquer and a proportion of at least 10 per cent by weight thereof of a phenyl mercury compound. Specified phenyl mercury compounds are the borate, phthalate, chromate and salicylate. The paint vehicles specified are cellulose derivatives, natural gum spirit solutions, varnishes and synthetic resins, the glycerol phthalate oil-modified resins, pure oil soluble phenolic condensation products such as the para-phenyl phenol formaldehyde condensation product, the acrylic ester resins, particularly the mixed butyl and isobutyl methacrylate, chlorinated rubber and vinyl chloride-vinylacetate copolymers. Corrosion inhibitors such as the chromates may be present, specified are the strontium, barium, calcium, magnesium, lithium, aluminium and zinctetraoxy chromates.
|
en
|
GB-562478-A
|
GB-1520442-A
|
GB
|
A
|
A
| null | 1942-10-29
| null |
F02B53/00
| null |
Improvements in and relating to rotary engines
|
en
|
562,478. Rotary engines. FARESO, SEN., J., and OWEN, B. J. 'CRADOC-. Oct. 29, 1942, No. 15204. Drawings to Specification. [Class 110 (ii)] A rotary engine, pump or compressor of the rotary abutment type has a recessed rotor wider than the co-operating rotor with one or more projecting pistons, the ends of the recesses being covered to seal the pistons during meshing. Each rotor has split sealing rings which are bevelled and under pressure of oil supplied by an external pump coupled to a rotor shaft and have radial projections to prevent rotation. Each piston has channel - shaped sealing members pressed outwards by oil under pressure to bear against the split rings. Sealing blocks are used in the stator near the point of contact of the two rotors. The oil circulated acts as a cooling and lubricating medium. An oil pressure regulating valve may be used. As applied to an internal-combustion engine, a compressor and an engine are arranged side-by-side in the same shafts, which are geared together. Working-fluid transfer ports are provided in the separating wall under control of a rotary disc with an arcuate slot. Combustible mixture is supplied to the compressor by a carburetter. The settings for the opening and closing of the arcuate valve slot are given in the Specification. The invention may be applied to a steam engine. Specification 562,501 is referred to.
|
en
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GB-816027-A
|
GB-1521157-A
|
GB
|
A
|
A
| null | 1957-05-14
| null |
C08G59/24
| null |
Polymers of 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylates
|
en
|
Heat hardenable epoxy resins are prepared by polymerizing in presence of acid catalyst 3,4-epoxycyclohexyl-methyl 3,4-epoxycyclohexane carboxylates of formula <FORM:0816027/IV (a)/1> wherein R1-R6 are H or alkyl groups. Catalysts specified are boron trifluoride, stannic chloride, zinc chloride, aluminium chloride, ferric chloride; etherates and aminates of boron trifluoride; sulphuric, phosphoric, perchloric, polyphosphoric and aromatic sulphonic acids. The carboxylates are prepared by epoxidizing by treatment with peracetic acid &c. the corresponding 3-cyclohexenyl-methyl-3-cyclohexene-carboxylates, as described in Specification 768,157, [Group IV (b)]. The epoxy compounds are heated in presence of the catalyst at 50-160 DEG C. to form a gel which is then cured by heating at 100-150 DEG C. for a time ranging from 30 mins. to 10 hours according to the temperature, catalyst and amount of catalyst used. In examples: (5) 1.4 gs. 3,4-epoxy-6-methylcyclohexylmethyl 3,4-epoxy-6-methylcyclohexane-carboxylate and four drops of a 10 per cent solution of stannic chloride in ethyl acetate were mixed and placed in an oven heated to 110 DEG C. The mixture gelled in 5 minutes and on further heating at 110 DEG C. for 20 hours cured to a colourless transparent resin with a Barcol hardness of 37; (6) the compound of Example (5) was polymerized in presence of sulphuric acid. It is stated that the monomeric diepoxides can be polymerized and copolymerized with polycarboxylic acids, polyols, amines, epoxides, &c. Reference has been directed by the Comptroller to Specification 768,157.ALSO:3,4-Epoxycyclohexylmethyl 3,4-epoxy-cyclohexanecarboxylates of formula <FORM:0816027/IV (b)/1> wherein R1-R6 are H or alkyl groups are prepared by (a) reacting 3-cyclohexenecarboxyaldehydes in presence of an aluminium alkoxide catalyst dissolved in an inert solvent, e.g. benzene at 0 DEG to 110 DEG C. to obtain 3-cyclohexenylmethyl 3 - cyclohexenecarboxylates and (b) epoxidizing the latter compounds by treatment with peracetic acid as described in Specification 768,157. Typical 3-cyclohexenecarboxyaldehydes which may be used as starting materials are 3-cyclohexenecarboxyaldehyde, 2,4 - dimethyl - 3 - cyclohexenecarboxyaldehyde, 3,4 - dimethyl - 3 - cyclohexenecarboxyaldehyde, 2-, 3-, or 4-methyl-3-cyclohexenecarboxyaldehyde, 2,2,5,5 - tetramethyl-, 2,2 - dimethyl - 5 - methyl-, 2,2 - dimethyl - 4 - methyl-, 3- or 4-methyl - 6,6 - dimethyl-, 3- or 4 - methyl - 6 - methyl, 3- or 4-methyl-6-ethyl-, 1-methyl-3- or 4-methyl-6-ethyl-, 2,2,6-, 2,4,6-, 2,5,6-, 2,2,4-, 2,2,5-, 3,6,6-, 4,6,6 - trimethyl, 2,2,5,5,6-pentamethyl - 3 - cyclohexenecarboxyaldehydes, 2,2,5,6- (or 1) - tetramethyl - 3 - cyclohexene-1 (or 6)-carboxyaldehyde, 2,2,4,6- (or 1)-tetramethyl - 3 - cyclohexene - 1 (or 6)-carboxyaldehyde. In examples: (1) 20 mols. 3-cyclohexenecarboxyaldehyde are added dropwise to a flask containing 0.5 mol. aluminium isopropoxide dissolved in 900 gs. benzene maintained at 20-25 DEG C. The mixture is left to stand for 16 hours and then 83 ml. conc. HCl is added, the aqueous layer is separated and the organic layer distilled to obtain 3-cyclohexenylmethyl-3-cyclohexenecarboxylate; 6-methyl-3-cyclohexenylmethyl 6 - methyl - 3 - cyclohexenecarboxylate is obtained from 6-methyl-3-cyclohexenecarboxyaldehyde in a similar way; (3) the cyclohexenecarboxylate is epoxidized by addition thereto dropwise of a 25.5 per cent solution of peracetic acid in acetone, the solution being maintained at 20-25 DEG C. during the reaction and afterwards for 16 hours at -11 DEG C.; (4) describes a similar method for the preparation of 3,4-epoxy-6-methylcyclohexylmethyl-3,4 - epoxy 6 - methylcyclohexanecarboxylate. Reference has been directed by the Comptroller to Specification 768,157.
|
en
|
GB-309333-A
|
GB-1526228-A
|
GB
|
A
|
A
| null | 1928-05-24
| null |
A61C5/62
| null |
A new or improved instrument for stopping teeth
|
en
|
309,333. Sidler, F. May 24, 1928. Dental instruments.-An instrument for introducing amalgam into tooth cavities comprises a flat rectangular container 3 fitted with a piston 12 adapted to move the amalgam forward into the path of a smaller piston 6, by means of which it is forced through an outlet pipe 4 into the cavity. The large piston 12, which is attached to a cable 13 passing through a tube 2 and the hollow handle 1 of the instrument, can be pressed forward by means of a knob 13a in opposition to a spring 14. The other piston 6, which is worked alternately with the first, moves in the guiding tube 5 and is operated by the levers 7, 8. In a modification, Fig. 3, the outlet pipe 24 is coaxial with the tube 2, which in this case carries the smaller ejecting piston 26, whilst the larger piston 32 at right angles is operated by levers. The container 23 is formed with a tube 21 engaging with the tube 2 by a bayonet joint. For filling the container, one wall 15 of which is removable, a funnel the stem of which can be closed by means of a slide. and a ramming device for forcing in the amalgam, are provided.
|
en
|
GB-664639-A
|
GB-1532849-A
|
GB
|
A
|
A
| null | 1949-06-08
| null |
B02C9/04
| null |
Pneumatic conveyor system for products of corn grinding
|
en
|
664,639. Pneumatic conveyers. SAIB SOC. APPLICAZIONI INDUSTRIALI BREVETTI. June 8, 1949. [June 8, 1948; Aug. 19, 1948] Nos. 15328/49 and 1.5329/49. Class 78 (i). A pneumatic conveyer system for a corn grinding mill consists of a system of conduits connecting various grinding apparatus to one another in a desired sequence and leading finally to storage chambers for the final products so that the final products consist of mixtures of a desired number and proportion of the products of each grinding apparatus, such a system being characterised in that each of the said conduits includes a filter through which the conveying air passes, so as to completely separate from it the products, the filtered air then requiring no further filtering. In the embodiment shown, a grinding mill consists of grinding apparatuses A1 ... A14, chambers R1 ... R13 where the products of one or more of the grinding apparatuses are separated from the conveying air and are mixed, and sacking stations X1 ... X5 for the final products, the mixing sequence being determined by the layout of the conduits E leading from one or more of the grinding apparatuses to the chambers R1 ... R13 and the conduits G leading from the chambers R1 ... R13, to further grinding apparatus or to the stations X1 ... X5. Air is drawn through the system by either a fan B or fans B1, B2, B3. Each of the chambers R1 ... R13 contains a filter and the chambers preferably consist of cyclones. Owing to the presence of a filter in each chamber R1 ... R13, there are no residual products in the air reaching the fan or fans. In a second embodiment there is a separate fan associated with each of the chambers R1 ... R13, instead of using a single fan B or the three fans B1, B2, B3. In a third embodiment, air is blown into the grinding apparatuses instead of being sucked from the chambers R1 ... R13 as shown.
|
en
|
GB-853277-A
|
GB-1545658-A
|
GB
|
A
|
A
| null | 1958-05-14
| null |
H02M7/5383
| null |
Improvements in or relating to inverter circuits
|
en
|
853,277. Transistor inverter circuits. WESTINGHOUSE ELECTRIC CORPORATION. May 14, 1958 [May 29, 1957], No. 15456/58. Class 40(6). In a transistor inverter circuit of the type in which the primary winding of a transformer is connected in series with the output electrodes of the transistor and the D.C. input supply and in which a secondary winding causes the transistor to become conducting and non-conducting alternately, an impedance is modulated in the said series circuit to drop some of the reverse voltage that would otherwise be applied across the transistor and a resistor is connected across the transistor, having a valve lower than the leakage resistance of the transistor. The Figure shows an inverter comprising a transformer 9 having a square loop core and connected in push-pull are two series chains of transistors. The reverse voltage across the transistors is equalized by shunting the transistors by equal resistors having a value lower than that of the leakage resistance of the transistors. N.P.N. transistors may replace the P.N.P. type shown (Fig. 2 not shown). Specification 766,868 is referred to.
|
en
|
GB-119130-A
|
GB-1547317-A
|
GB
|
A
|
A
| null | 1917-10-24
| null |
F04C2/14
|
SCHULTZ EMILE JOSEPH AUGUSTIN
|
Improvements in or relating to Rotary Pumps for Fluids.
|
en
|
119,130. Schultz, E. J. A. Oct. 24, 1917. Plant; movable-abutment type; compensating for irregularity of flow; discharge and suction pipes; mounting pistons on shafts; regulating. - Rotary pumping apparatus of the Roots'-blower type for delivering separately and simultaneously a number of fluids comprises a casing divided by partitions D, E into a number of chambers of different capacities haveach its own inlet and outlet conduit and provided with intermeshing gear pistons a, a<1>, b, b<1>, c, c<1> mounted freely on parallel shafts C, C', the driving-shaft C having loose pins e<1>, e<2>, e<3> engaging recesses in the pistons mounted thereon. The left-hand chamber may be forpumping water, the middle for pumping lubricant, and the right-hand for pumping fuel, the temperature of the lubricant being raised by its proximity to the cooling-water chamber. The fuel chamber may be provided with a by-pass H, Fig. 3, between the inlet side o<1> and the outlet side o<2> of the chamber, a spring-pressed valve I regulating the proportion of fluid flowing therethrough. The flow of lubricant may be regulated by a by-pass l fitted with a spring-pressed valve i adjusted by a screw member allowing liquid to return to the suction side. To promote the circulation of water at a small speed through a large duct, the pump may draw water by a pipe of small cross-section located in an enlargement of the duct and return it through a second similar pipe opening also into the enlargement and situated back to back with the first pipe, the second pipe having a contracted nozzle to accelerate the flow.
|
en
|
GB-942586-A
|
GB-1552561-A
|
GB
|
A
|
A
| null | 1961-04-28
| null |
C08G77/26
| null |
An improved composition and process for colouring textile fibres
|
en
|
Compositions for colouring textile fibres comprise (I) an aqueous solution or dispersion of (A) a water-miscible organosiloxane copolymer consisting essentially of polymeric units (1) of the general formula R11x(ZnR1)SiYzO 3-x-z/2 where R1 is an aliphatic hydrocarbon radical containing one 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 R1 by a carbon-nitrogen bond and is composed of carbon, nitrogen and hydrogen atoms and contains at least 2 amine groups, the ratio of carbon atoms to nitrogen atoms in -R1Zn being less than 6:1, each R11 is a monovalent hydrocarbon radical free from aliphatic unsaturation, Y is a hydroxyl or -OR radical where R is an alkyl radical containing less than 4 carbon atoms, x is 0, 1 or 2, z is 0, 1 or 2 and x+z is 0, 1 or 2, and polymeric units (2) of the general formula R111ySiYm O 4-y-m/2 where each R111 is a monovalent hydrocarbon radical or a halogenated aryl radical, Y is as defined above, y is 0, 1, 2 or 3, m is 0, 1 or 2 and y+m is 1, 2 or 3, there being at least 5% by weight of the (1) units present in the copolymer and the copolymer having an average degree of substitution of at least one organic group attached directly to silicon by carbon silicon bonding per silicon atom and said copolymer having an amine nitrogen content of at least 0.5% by weight or (B) a water dispersible salt of (A) with an acid and (II) a textile dyestuff. The compositions may also contain water-miscible solvents, e.g. lower alkanols, dioxan and tetrahydrofuran and wetting agents such as the trimethylnonyl ether of polyethylene glycol. Many dyes and pigments are listed and examples are given. Specifications 686,212, 746,307, 766,864, 858,445, 872,138, 889,001 and 942,587 are referred to.ALSO:Natural and synthetic textile fibres and films are coloured using aqueous solutions or dispersions of organosiloxane-polyamino-organosiloxane copolymers (see Division C3) or their salts containing a dyestuff. In a modification of the process the textile fibres are pre-treated with an aqueous solution or dispersion of the copolymer or its salt and then coloured by conventional means or vice versa. Fibres specified are cellulosic fibres such as cotton, linen or wood; protein fibres such as wool or silk and synthetic fibres, e.g. glass, acrylic, aromatic polyester and nylon. Many dyes and pigments are specified. The aqueous solutions or dispersions may contain wetting agents and may be applied by, for example, padding, spraying and immersion. Examples are given. Specifications 686,212, 746,307, 766,864, 858,445, 872,138, 889,001 and 942,587 are referred to.
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en
|
GB-951139-A
|
GB-1556262-A
|
GB
|
A
|
A
| null | 1962-04-24
| null |
C21D1/58
| null |
Quenching oil composition
|
en
|
A quenching oil composition comprises 0.1 to 2% of an oil-soluble alkali metal or alkaline earth metal sulphonate added to the composition of the parent Specification. Optional ingredients are also similar and exemplified.
|
en
|
GB-897375-A
|
GB-1569660-A
|
GB
|
A
|
A
| null | 1960-05-04
| null |
H02K9/00
| null |
Synchronous capacitor with hydrogen gas filling
|
en
|
897,375. Cooling dynamo-electric machines. BROWN, BOVERI & CIE. A.G. May 4, 1960 [May 4, 1959], No. 15696/60. Drawings to Specification. Class 35. [Also in Group XIII] A synchronous electric capacitor is cooled partly by a cooling medium (such as oil, water or a gas) circulated through hollow stator conductors, and possibly also through stator core ducts, and re-cooled in a cooling mediumair cooler; and partly by hydrogen which fills the remainder of the machine casing and circulates through a hydrogen-air cooler. The rotor winding may also be provided with a hollowconductor cooling system. If hydrogen is also used as the cooling medium a single cooler may be employed.
|
en
|
GB-185239-A
|
GB-1572121-A
|
GB
|
A
|
A
| null | 1921-06-07
| null |
G03B21/20
| null |
Improvements in motion picture machines
|
en
|
185,239. Thornton, A. A., (De Vry Corporation). June 7, 1921. Electric-lamp lanterns and casings. - The detachable lamp-house of a kinematograph projector comprises a front wall 35, a rear wall 36, one side wall 37, a bottom 38, and a top 39 rigidly secured together, the top 39 being formed with V-shaped guides 40 adapted to slide on V-shaped bars 41, 42 bolted to the casing 9 of the projector, the bolts for the bar 42 engaging slots to provide for adjustment of the bar to vary the position of a stop 44 which limits the inward movement of the lamp-house. A spring-latch 47, Fig. 3, engages a tongue on a plate 49 adjustably secured to the top of the. casing 9 to prevent outward movement. The open side of the lamphouse in this position loosely encloses a flanged plate 55, Fig. 3, secured to and spaced from the wall of the casing 9 by bolts 56. The top 39 is provided with a deflector 60<a> over an opening 60, and the casing 9 is formed with an air outlet 61 provided with a perforated plate 62. Cooling air is circulated by a fan driven by the motor 17. The reflector 65 is secured in an opening in the wall 36 so that its rear surface may be cooled by the air current to prevent deterioration of the reflecting surface by heat.
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en
|
GB-529796-A
|
GB-1579139-A
|
GB
|
A
|
A
| null | 1939-05-26
| null |
C07C2/38
| null |
Cuprous chloride-potassium chloride catalyst for polymerising acetylene to vinylacetylenes
|
en
|
529,796. Vinyl-acetylenes. DU PONT DE NEMOURS & CO., E. I. May 26, 1939, No. 15791. Convention date, May 26, 1938 [Class 2 (iii)] In the production of vinyl acetylenes and related compounds by polymerization of acetylene. a catalyst is used containing 19-30 per cent. of potassium chloride, 40-51 per cent. of cuprous chloride and 30 per cent. of water and preferably hydrochloric acid. Examples are given, in one of which the products are dried over calcium carbide and condensed by cooling at -60‹C. The chlorine in the product is estimated periodically and a corresponding quantity of hydrochloric acid added to maintain the composition of the catalyst. Specifications 438,548, 445,358 and 451,442 are referred to.
|
en
|
GB-587361-A
|
GB-1581444-A
|
GB
|
A
|
A
| null | 1944-08-18
| null |
H05B6/78
| null |
Improvements in or relating to apparatus for heating by high frequency electric currents
|
en
|
587,361. Dielectric heating. STANDARD TELEPHONES & CABLES, Ltd., and MADDOCK, A. J. Aug. 18, 1944, No. 15814. [Class 39 (iii)] In a high frequency dielectric heating apparatus, one or both electrodes 6, 11 are mechanically connected with a door 2 of metal screening cage 1 so that when the door is opened the electrodes are separated to facilitate removal &c. of the heated material. The cage may be of perforated or mesh material to allow gases &c. to escape and the material to be observed. In one example, Fig. 1, the upper electrode 11 is carried by arms 12 pivoted at 13 and connected through an arm 14 and link 15 to the door 2 hinged at 3. The electrode 11 is automatically moved to position 11a when the door is closed, a balance weight 5 maintaining the door in either open or closed position as desired. The lower electrode 6 is vertically adjustable in slots 9 in supports 10. In a modification, Fig. 2 (not shown), particularly suitable for electrodes of large area, the door and upper electrode are vertically slidable, being connected through a chain and cam mechanism so that opening of the door raises the electrode. The chain is attached at one end to the door and at the other to a balance weight, and passes over sprocket wheels, one of which has its axis' fixed to the cam. The cam is spiral shaped and engages a roller adjustably connected to vertical rods which support the upper electrode, so that the working distance between the electrodes can be altered from outside the screening cage. According to the Provisional Specification one electrode may also be connected to the vertically moving door by a rack and pinion device or by means of levers.
|
en
|
GB-1389014-A
|
GB-1590671-A
|
GB
|
A
|
A
| null | 1971-05-19
| null |
G06K7/10
| null |
Optical code reading systems
|
en
|
1389014 Code carrying device PLESSEY CO Ltd 19 May 1972 [19 May 1971] 15906/71 Heading G4M [Also in Division H4] A code carrying substrate has an integral guide to align a light pen with a line of bar markings or has a guide on a separate sheet which may overlay the line of markings to align the pen. The guide may consist of ribs or grooves. The code may be a telephone number and a hand held reader may be used to "dial" direct from the code or the code may be storekeeping records or for use for theatre bookings, lending libraries &c.
|
en
|
GB-833493-A
|
GB-1593656-A
|
GB
|
A
|
A
| null | 1956-05-23
| null |
F02K1/15
|
GREENLAND LEONARD SIDNEY
|
Improvements in reheat control systems for gas turbine engines
|
en
|
833,493. Gas-turbine jet-propulsion plant. HOBSON Ltd., H. M. Aug. 22, 1957 [May 23, 1956], No. 15936/56. Class 110 (3). [Also in Group XXIX] An aircraft jet-propulsion gas-turbine engine with reheat in the exhaust pipe and a variable area propelling nozzle has the area of the nozzle controlled by means responsive to the turbine pressure ratio so as to maintain this ratio substantially constant and means responsive to turbine inlet pressure to control the fuel flow to the reheat burners so that the fuel flow increases progressively with increase in turbine inlet pressure. When the pilot's lever 2 is moved into the reheat zone, a link 100 rotates an initially closed valve 102 so that air can be admitted to the turbine 7 when the valve 6 is opened. The link 100 actuates a cam 101 which allows the valve 32 to close and cause piston 160 to rise and open the valve 6. The turbine 7 drives the reheat fuel pump 8. If when the pilot's lever 2 is moved out of the reheat zone, the valve 6 fails to close, a solenoid 5 may be energized by a switch 103 to open the valve 32 and the piston 160 to close the valve 6. The valve 6 may be closed by the governor 44 acting on the bleed valve 45. As soon as the pump 8 operates the valve 105 opens and allows fuel to be supplied to the primary reheat burners 10 through a control unit 9A and to the secondary reheat burners 10A, 10B through a control unit 9B. The control unit 9A comprises a capsule 172 responsive to the turbine inlet pressure (P2) which controls the position of servo-piston 76A through a lever 74A varying the effective area of an orifice 75A. The piston 76A controls the area of a metering orifice 77A by a needle 34A. A valve 78A maintains a constant pressure difference across the metering orifice 77A. The control unit 9B comprises a metering orifice 77B the effective area of which is controlled by a needle 34B positioned by a servo-piston 76B in accordance with variations in effective area of an orifice 75B controlled by a beam 74B actuated by a capsule 272. The pressure drop across the metering orifice 77B is controlled by a pressure regulating valve 78B. The capsule 272 is initially exposed internally to the turbine inlet pressure and externally to a fraction of this pressure, the fraction being determined by the position of a valve 170. When reheat is switched on the micro-jet control 13 commences to move the nozzle flap 20 from the position A to a more open position due to an increase in the turbine exhaust pressure (PJ). This causes cam 52A to open up the valve 159 to permit a flow of air from the interior of the capsule 272 through a restrictor 158 and conduit 157. A link 106 connected to the lever 2 serves, as soon as the lever 2 is moved into the reheat zone to open a valve 107 to admit fuel to the burners 10B. As the lever 2 moves into the reheat zone, the link 106 progressively closes a valve 170 and progressively opens a valve 270. Closing of the valve 170 increases the external pressure on the capsule 272. This effect in conjunction with the reduction of internal pressure in the capsule, causes the needle 34B to increase the area of the metering orifice 77B. Opening of the valve 270 results in progressive movement of the diaphragm 83B to vary the pressure drop across the metering orifice 77B. By suitable profiling of the needles 170, 270 it is possible to cater for changes in combustion efficiency with change in altitude. An altitude control unit 53 permits the supply of fuel to additional reheat burners 10C at low altitude where the pump discharge pressure is sufficient to move piston 58 against the action of its spring 58A. If the turbine pressure ratio drops more than 5% below the setting of the control 13, a fuel override 27 reduces the fuel flow through the control unit 9B by closing the normally open orifice 82B. The reheat fuel is ignited by injecting fuel into the gas stream before the turbine through nozzles 41. When the booster pump is switched on, fuel is supplied to fill the cylinder 22. When the pilot selects reheat, the fuel pressure in the supply line to the burners 10 increases and causes the diaphragm 108 to move to the left and open a valve 110. This causes piston 111 to move to the left and open valve 112 and simultaneously close valve 112A so that the delivery pressure of the main fuel pump is applied to the underside of the piston 23 which then forces the fuel in the cylinder 22 through the jet 41. A turbine pressure ratio control 13 is constituted by a micro-jet comprising a diaphragm 14 mounted in a chamber 15 and subject at one side to the turbine exhaust pressure (PJ) and on the other to a pressure which is proportional to the turbine inlet pres sure (P2). When reheat is selected a cam 113 opens a valve 114 so that high pressure oil is supplied to the left-hand side of piston 115. This oil escapes to exhaust through a small gap between a port 116 in the piston 115 and the head 118 of a valve 119 coupled by a link 120 to the diaphragm 14. Movement of the diaphragm actuates the valve 119 to vary the flow through the restrictor 122 and thus vary the pressure on the left-hand side of the piston 115 which moves to cause the actuator 64 to open or close the nozzle 20. When the nozzle reaches the position B of maximum area, the cam 52A opens a valve 165 which reduces the pressure on the right-hand side of the diaphragm 14 and so prevents the nozzle opening further. The turbine pressure ratio can be modified as a function of compressor pressure ratio by means of a device 283 which comprises a pair of diaphragms 84 subject to the pressure difference across the compressor which control a needle 86 which varies the proportion of the compressor delivery pressure applied to the lefthand side of the diaphragm 14. The nozzle 20 is moved to the divergent position C by a device 163 responsive to Mach number but inoperative until the pilot has moved his lever into a position selecting about 80% of maximum reheat fuel. Before the lever 2 reaches this position, the valve 123, Fig. 3b occupies the position shown in which ram pressure (P1) alone is applied to the device 163. When the lever 2 reaches the 80% reheat position the cam 124 allows the valve 123 to be raised so that ambient pressure (PO) is applied to the space above the uppermost of the two diaphragms 130. Thereafter, when a predetermined Mach number is obtained, the diaphragms 130 move suddenly upwards and close valve 126 thereby removing the leak from the side of the diaphragm 14 through the valve 165. The resulting movement of the valve 117 moves the nozzle 20 to the divergent position C. In a modification, the valve 6 is controlled by a diaphragm the air pressure on one side of which is controlled by a solenoid operated valve and the overspeed control valve 45. The fuel supply to all of the reheat burners is controlled by a single control valve regulated by a capsule responsive to a pressure proportional to the turbine inlet pressure (P2), the proportion being determined by the position of the pilot's lever 2 controlling a leak-off valve from the capsule chamber. The supply to the secondary reheat burners is controlled by a valve also operated by the pilot's lever. The supply to these secondary reheat burners is under the control of a shut-off valve operated by the opening of the nozzle 20. In this case, the fuel override 27 actuates the valve controlling the pressure drop across the metering orifice. The arrangement and control of the ignition accumulator 21 also differs in detail. In this arrangement, the nozzle 20 is moved to the position C by a control responsive to the pressure ratio between the turbine inlet pressure (P2) and the ambient pressure (PO). In this arrangement the nozzle flaps are operated by a screw jack operated by an air motor under the control of the turbine pressure ratio control 13. A member connected to the moving member of the jack shuts off the air supply to the motor at the limits of travel. Specifications 757,004, 833,496, 833,497 and 833,498 are referred to.
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en
|
GB-1269412-A
|
GB-1600069-A
|
GB
|
A
|
A
| null | 1969-03-27
| null |
H01P5/12
|
SEIDEL HAROLD
|
Hybrid-coupled fan-out and fan-in circuits
|
en
|
1,269,412. Amplifiers. WESTERN ELECTRIC CO. Inc. 27 March, 1969 [29 March, 1968], No. 16000/69. Heading H3W. [Also in Division H1] Comprises a method of power-equalizing or " tempering " a power-dividing or " fan-out " network using quadrature hybrid couplers by providing further such couplers in which the signals from symmetrical branches are mixed, the sense of " symmetrical " being explained below. The known hybrid fan-out circuit comprises an input quadrature coupler whose outputs form the inputs of two further couplers and so forth, whereby, in general, 2<SP>n</SP>-1 hybrid couplers provide 2<SP>n</SP> branches. Equal division of power is only attained if the transmission coefficient t of each coupler is equal to the coupling coefficient k over a sufficient band, and departure from equality causes an unequal power division which becomes more intolerable as n increases. The powers of the output signals from the first coupler are proportional to t and ik respectively (where i = #-1 represents a 90 degrees phase-shift), those of the (two) couplers in the second bank being proportional to t<SP>2</SP>, ikt, ikt and - k<SP>2</SP>, and so forth. Fig. 3 represents the n = 16 outputs of a four-bank fan-out, the power levels being marked against the corresponding output terminals 41-56. All the levels are of the same degree n and "symmetrical " refers to pairs of the type tpk<SP>n-p</SP> and t<SP>n-p</SP>k<SP>p</SP>, signals from such pairs being coupled to 2<SP>n-1</SP> = 8 further hybrids where they are mixed and fed to sixteen outputs. The resuit of such tempering is: (a) the power in all branches is the same at the crossover frequency of the couplers (i.e. the frequency at which t = k); and (b) the slope of the power v frequency curve is zero at the crossover frequency. The signals are fed to separate amplifiers and then recombined in a fan-in which is the conjugate of the fan-out network. The modification necessary to form such a conjugate network involves the insertion of 180 degrees phase-shifters in selected branches of the fan-out, the first phaseshifter being inserted in the B branch of the first hybrid 70, Fig. 5. Of the 2<SP>n</SP> branches of the untempered fan-out half are derived from the A and half from the B branch of hybrid 70, the A- and B-derived outputs being combined in symmetrical pairs by the tempering hybrids 77, 78, 79 &c. If the exponent of the signal coupled from an A-derived output is even, a phaseshifter is added to the B branch of the corresponding tempering hybrid, e.g. assuming p is even, a phase-shifter is added to branch 83 of tempering hybrid 79. If the said exponent is odd, nothing is added. Thus, half the tempering hybrids are provided with phase-shifters. The tempered hybrid suffers from the disadvantage that reflections due to discontinuities may return to the input. This may be avoided by using the parallel channel arrangement of Fig. 7 in which the signal is divided and recombined respectively by 180 degrees hybrids 104, 105, the fan-out network N of one channel being identical to the fan-in network of the other, and the conjugate networks N* being likewise identical. All reflections are coupled to the termination 106. In a more general form of the fan-out network, different couplers may be used at each binary level. Thus, the coefficients of the first coupler may be t 1 , k 1 , those of the first bank t 2 , k 2 and so forth. The signals in the output branches are then of the form t 1 t b ... t c .k i k l ... k m where the subscripts are all different integers between 2 and n, the number of t factors being p and the number of k factors (n-p). A " symmetrical " branch is now one of the form k 1 k b ... k c .t j t l ... t m where the k factors number p and the t factors (n-p). In a preferred form of the fan-out, the couplers in the first few binary banks are of wider bandwidth than those in the remaining banks. Attenuators may be used to equalize the signals in the few branches in which the power level is intolerably higher than the average.
|
en
|
GB-1147395-A
|
GB-1605467-A
|
GB
|
A
|
A
| 1007-03-15
| 1967-04-07
| null |
B65D5/50
|
HOLDSWORTH KEITH
|
Containers of cardboard or the like material
|
en
|
1,147,395. Containers. FIELD, SONS & & CO. Ltd. 4 Jan., 1968 [7 April, 1967], No. 16054/67. Heading B8P. A container for displaying small articles comprises an outer box formed of two box parts hinged together and a display unit 16 located within the outer box so as to extend across the hinge and pivotally attached to the inside of the box by means of projections 22 which engage in slots in the walls of the box parts so that when the outer box is opened the display unit is exposed to view but is retained within the outer box. The display unit is formed with a tray 24.
|
en
|
GB-476495-A
|
GB-1605836-A
|
GB
|
A
|
A
| null | 1936-06-09
| null |
D04B17/00
| null |
Improvements in devices for use in darning or weaving fabrics
|
en
|
476,495. Weaving and darning devices. BOERNER, A. June 9, 1936, No. 16058. [Class 142 (ii)] A device for weaving or darning stockings &c. of the kind wherein the work 8 is stretched over a block 5 and a frame 1 carrying a number of cranked and hooked oscillatable shedding members 14, 15 is secured thereto, has a peripheral slot 4 in the block 5 and the frame 1 has a flange 3 to engage the said slot, the frame being secured to the block 5 and the work to the block by a band or spring 7 also engaging the slot 4. The members 15 can be held in their mid positions by a bar 16 threaded through the cranks while a warp thread 17 is being passed through the work at one side of the hole 9 and over the several hooks 15. The cranks are knocked first one way and then the other to shed the warps 17 and the weft is passed through the shed with the aid of a needle.
|
en
|
GB-120418-A
|
GB-1610317-A
|
GB
|
A
|
A
| null | 1917-11-05
| null |
H01B17/22
|
SPENCER ALEXANDER
|
Insulator and Binder for Telegraph, Telephone, Electric and other Wires.
|
en
|
120,418. Spencer, A. Nov. 5, 1917. Insulators.-An insulator for supporting telephone &c. conductors comprises a lower member 2 having a screw-threaded hole therethrough in which a metal standard 1 is adapted to be screwed, and an upper member or cap 5 having a screw-threaded part. 7 to engage in the hole in the member 2 and secure the conductors 4 in grooves in the top face of the lower member. In a modification. the cap screws upon the projecting end of the metal standard.
|
en
|
GB-459234-A
|
GB-1610635-A
|
GB
|
A
|
A
| null | 1935-06-04
| null |
G03C7/26
| null |
Method of producing films in natural color
|
en
|
459,234. Colour photography. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Crespinel, W. T. ; 2041, North Vermont Avenue, Los Angeles, U.S.A.) June 4, 1935, No. 16106. [Class 98 (ii)] A colour positive is produced on a film having two superimposed emulsions by printing thereon from red and blue component negatives, developing the images, mordanting the upper image with a solution containing potassium iodide as principal constituent, arresting the action with bisulphite solution, applying basic dye, and removing excess, and toning the lower image with a solution having no affinity for the upper image mordant, and clearing the toned image to render it more transparent by treatment with potassium iodide solution. The film may comprise a celluloid. base, a gelatine substratum, an emulsion a second gelatine substratum and a second emulsion. A yellow dye is incorporated either in the emulsions or in the second substratum. The red component negative is printed on the lower emulsion through the base, and the blue component negative on the upper emulsion either simultaneously or successively. Lamps of different intensities may be used for the two components. Development is effected preferably with anidol, and the film is fixed, washed and dried, and treated with a solution of potassium iodide, iodine, and acetic acid. The film is washed, treated with a potassium metabisulphite or sodium bisulphite bath, washed, treated with a bath containing Chrysoidine Y, Safranine Y, and acetic acid, and washed. The lower image is toned blue in a bath containing ammonium persulphate, ferric alum, potassium ferricyanide, and acetic acid, washed, and fixed with potassium iodide solution. In a modification the upper image is dye-toned blue-green with malachite green, and the lower image red-toned with potassium oxalate, uranium nitrate, potassium ferricyanide, and hydrochloric acid.
|
en
|
GB-720422-A
|
GB-1611352-A
|
GB
|
A
|
A
| null | 1952-06-26
| null |
H01J9/30
| null |
Improvements in and relating to the manufacture of electric lamps
|
en
|
720,422. Dynamo - electric apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. June 26, 1952 [June 30, 1951], No. 16113/52. Class 35. [Also in Group XI] Apparatus for threading a leading-in wire into a vertical perforation in the end of a lamp cap comprises means for holding a lamp bulb upright with the leading-in wire substantially vertical, means for locating the cap in alignment over the bulb, and means for agitating the cap both vertically and laterally while thus located in order to provide repeated opportunities for the wire to enter the perforation. The apparatus is preferably located at one of the work-stations adjacent to an indexing- conveyer of the endless-chain type provided with a series of pairs of bulb-holding jaws, each of which holds a bulb vertically with the neck uppermost (see Group XI). The cap is of the kind comprising a screw-threaded metal shell with its upper end closed by a web of insulating material such as glass with a metal eyelet located within it to form a central end contact. Below the eyelet the glass web is recessed to a conical shape to facilitate the threading of the leading-wire through the aperture. In one arrangement, Fig. 6, the agitation of the cap within a threading-tube is effected by magnetic induction, the threading- tube being made in the form of a soft iron yoke 91 with three inwardly facing wire-wound poles 88-90 to which 3-phase A.C. is applied, thereby developing a rotating magnetic field and generating eddy currents within the cap, so that it is caused to vibrate and rotate; its rate of descent is also retarded. In a modification, Fig. 7, a threading tube 99 is resiliently mounted on a base by means of flexible spring fingers 100, 101 and an armature 103 attached to the threading tube is vibrated by an electromagnet 102, the system being arranged to be mechanically resonant at a frequency close to that of the energizing current of the magnet. The threading tube is slotted vertically at equidistant intervals and flexible snubber wires or springs 105 are located in the slots, their upper ends being fixed to the interior of the tube immediately above the slots.
|
en
|
GB-946335-A
|
GB-1613061-A
|
GB
|
A
|
A
| null | 1961-05-04
| null |
G01G23/32
|
WOLVERSON OLIVER ARTHUR GERALD
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Improvements relating to weighing apparatus incorporating an optical projection system
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en
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946,335. Indicating and registering. W. & T.AVERY Ltd. May 2,1962 [May 4,1961], No. 16130/61. Heading G1W. In a weighing apparatus an optical projection system is used to provide respectively two separate images on two screens of a single weight indication. As shown Fig. 1 a transparent indicator graticule A which may be of cylindrical or disc shape is rotatable between a lens 'B' and a light source (not shown) through an angle proportional to the weight. A mirror C is positioned adjacent the focal point of the lens to reflect half of the light beam on to a translucent screen E. A second mirror F reflects the other half of the beam to a screen H. In a modification Fig. 2 (not shown) there is a further pair of mirrors, which respectively receive the light beams reflected from the mirrors C and F and respectively turn each beam through a further angle before the beams are received on the respective screens.
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en
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GB-108254-A
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GB-1614716-A
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GB
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A
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A
| null | 1916-11-10
| null |
B42F13/00
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JAMES FRED
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Improvements in Loose Leaf Ledgers, Binders and the like.
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en
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108,254. James, F. Nov. 10, 1916. Locks.-In a looseleaf binder, the connexion between t h e lock plug 3 and the clamp-operating spindle 5 comprises a grooved member 1 and a pin or lug 4, the groove being of such form as to permit sufficient rearward rotation of the key 6 to enable it to be withdrawn, without affecting the clamping mechanism. The member 1 may be on the spindle 5 and the pin 4 on an extension 7 of the plug 3. Longitudinal relative motion between the parts may be allowed for by the screw and slot connexions 8, 9.
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en
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GB-572945-A
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GB-1621143-A
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GB
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A
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A
| null | 1943-10-04
| null |
B24D18/00
| null |
Improvements in and relating to the manufacture of abrasive tools
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en
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In the manufacture of abrasive tools, such as wheels, drills and cutters, a mould is wholly or in part lined or coated with an abrasive powder which may be mixed with bonding material, and is then filled to the desired level with metal which is melted or made plastic under reduced atmospheric pressure or in a reducing or neutral atmosphere, so that the metal when cold has one or more faces having embedded abrasive. The abrasive material is preferably diamond either alone or mixed with other abrasive such as aluminium oxide. Heating is by high-frequency induction, frequencies of from 470,000 to 15,000,000 cycles being employed. The higher the frequency the shorter the time of heating and the greater the temperature that may be employed without destroying the diamonds, particularly if the atmosphere be reducing or neutral. A highly refractory mould lined with zirconia is employed, and the abrasive face is located outside the inductive field. The abrading material may be powdered steel or other metal and when the added metal is melted it permeates the pores in the bonded abrasive without disturbing the abrasive or melting the bond.
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en
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GB-420217-A
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GB-1625334-A
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GB
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A
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A
| null | 1934-05-31
| null |
C04B7/21
| null |
Improved process for manufacturing hydraulic binding materials
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en
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A process for the manufacture of hydraulic binding materials having granulated blast furnace slag as a base, in which the less active constituents and the more active constituents are ground separately, the less active constituents being ground by the wet method and the more active constituents being ground by the dry method and only added to the paste of the less active constituents at the moment of utilization. The less active constituents are slag and sulphatic materials, and the more active constituents are Portland and like cements.
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en
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GB-193805-A
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GB-1625422-A
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GB
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A
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A
| null | 1922-06-12
| null |
A21C1/02
| null |
Stirring and dough kneading machine for household use
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en
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193,805. Bing Werke vorm. Geb. Bing Akt.-Ges. Feb. 27, 1022, [Convention date]. Stationary batch-mixers with rotary stirrers.- A hand stirring and kneading machine comprises a container a in which two arms f, g, mounted on a spindle e, and arranged above and below a single fixed arm b, are rotated. The spindle e is mounted in a removable bridge member d, and is fitted with a gear h meshing with a gear i mounted on the bridge member. A handle is fitted with squared sockets o, n, either of which may engage the spindle e or the axle of the gear wheel i.
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en
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GB-798278-A
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GB-1626655-A
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GB
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A
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A
| null | 1955-06-07
| null |
A47B47/00
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WING HOWARD
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Improved connecting means for rods, bars or the like, for display purposes
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en
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798,278. Furniture joints. HARRIS & SHELDON (DISPLAY), Ltd. Sept. 6, 1956 [June 7, 1955], No. 16266/55. Class 52(2) Shop window display fittings consist of vertical rods 5<SP>1</SP> passing through connecting blocks 8 which are clamped in place by horizontal rods 5<SP>11</SP> the ends of which are screwed into lateral bores in the blocks and bear on rods 5<SP>1</SP>.
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en
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GB-717685-A
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GB-1635351-A
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GB
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A
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A
| null | 1951-07-10
| null |
F02M53/08
| null |
Fuel injection device for high-speed and air-cooled internal combustion engines
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en
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717,685. Fuel injectors. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. July 10, 1951 [July 18, 1950], No. 16353/51. Class 7(3) A fuel injector for a high-speed, aircooled internal combustion engine and shown as situated in the air intake 1a of a cylinder head 1, comprises a conicalended nozzle head 12 having a hollow tip with nozzle holes 19 directed into the combustion chamber, a needle valve 10 for regulating the flow of fuel, and a cooling- jacket 2 of high heat conductivity, and preferably with cooling-ribs 3, surrounding and engaging with the head 12 except at the nozzle tip so as to leave holes 19 exposed, part of the jacket 2 projecting outside the cylinder and being subjected to streams of cooling air and part passing through the cylinder head from which it is supported by an air space 23 and a heat-insulating seal 4. Fuel oil from a pump passes through ports 13 and filters 14 and lifts the needle against the action of a spring 9. The tip of the needle projects into a cylindrical bore and is situated at the centre M of a hemispherical surface 16, the cone angle of the head 12 is about 90 degrees, the axes of the holes 19 pass through the centre M and are normal to a generating line of the cone and the length b of the holes 19 does not exceed twice their diameter, whereby the spray cones have a wide angle. For favourable cooling conditions, the conical seating 17 of the jacket 2 is extended so that the distance e is not more than twice the diameter d of the holes, the nose 18 of the nozzle projecting only a small distance into the combustion chamber.
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en
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GB-1153650-A
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GB-1650167-A
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GB
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A
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A
| null | 1967-04-11
| null |
C10G65/12
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FOWLER RAY
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Improvements in or relating to the Treatment of Hydrocarbon Oils
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en
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1,153,650. Hydrodesulphurization and hydrodealkylation. POWER-GAS CORP. Ltd. 9 April, 1968 [11 April, 1967], No. 16501/67. Heading C5E. A hydrocarbon oil feedstock, e.g. the byproduct of the thermal cracking of naphtha into ethylene and propylene, containing organic sulphur compounds of the thiophene type and/ or olefines and diolefines is reacted with hydrogen or a hydrogen-rich gas in the presence of a catalyst, e.g. a molybdate of cobalt or nickel, at a temperature not exceeding 420‹ C. and at an elevated pressure to convert olefines and diolefines and organic sulphur compounds to paraffin hydrocarbons and hydrogen sulphide respectively, and the product is reacted, together with further hydrogen if necessary, at a temperature exceeding 520‹ C. and at an elevated pressure to hydrodealkylate aromatic compounds. If the feedstock contains a substantial proportion of diolefines it can be first reacted in the liquid phase at up to 200‹ C. with hydrogen using a catalyst containing nickel to convert the diolefines to olefines. The dealkylation is carried out non-catalytically at 650-790‹ C. or using a catalyst containing a molybdate of nickel or cobalt at 540-590‹ C. The formation of carbon during the dealkylation reaction may be inhibited by the addition of steam. The hydrodealkylated product is cooled and separated into a gas containing methane, ethane, hydrogen and hydrogen sulphide and a liquid containing the aromatic product and water. The aromatic product, e.g. 94À4% benzene, 4À3% toluene, and 1À3% xylene with 3 ppm of sulphur compounds, may be fractionally distilled to yield benzene and a toluene-xylene mixture which can be recycled to the hydrodealkylation reaction.
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en
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GB-398612-A
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GB-1651632-A
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GB
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A
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A
| null | 1932-06-11
| null |
B43K29/087
| null |
Improvements in or relating to lead pencils
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en
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398,612. Calendars. SKINNER, F. W., 8, Brownsville Road, Heaton Moor, Stockport. June 11, 1932, No. 16516. [Class 106 (iv).] A pencil is provided with a date calendar of which the numerals 1 to 30 or 31 are permanently printed upon its surface while a further part or parts of the surface are so prepared that the names of the days of the week and the numerals of the vear and if desired the names of the months may be erasably printed thereon by hand. The pencil is of the varnished kind and the surfaces a, b to be printed by hand are prepared by removing the varnish coating and if desired a part of the underlying wood. The numerals 1 to 31 or 1 to 30 with the addition of the letter Q are printed round the varnished part ; round the part a, the abbreviated names of the week are printed, three alternate days being sufficient, and on the part b, the names of the months are provided. The year may be shown on the part a. The erasable -names &c. are removed by rubbing or scraping. According to the Provisional Specification, the names of the days may be printed on a sleeve of paper, celluloid &c., or of spring material, which is held on the pencil either by adhesive or by friction.
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en
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GB-294236-A
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GB-1653028-A
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GB
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A
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A
| null | 1928-06-07
| null |
C01B35/10
| null |
Process for the manufacture of boric acid
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en
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294,236. American Potash & Chemical Corporation, (Assignees of Burke, W. E., and Ropp, H. de). July 22, 1927, [Convention date]. Drawings to Specification. Boric acid.-In a cyclic process for preparing boric acid, borax, which may be partly or wholly dehydrated, is treated with sulphuric acid, and boric acid separated by crystallization. Borax and water are added to the mother liquid which is cooled to separate sodium sulphate. The residual liquor is mixed with sulphuric acid and borax and again treated for the separation of boric acid The solution to which borax and sulphuric acid are added may be heated and concentrated by evaporation, and may be subsequently cooled to effect crystallization by evaporation under reduced pressure.
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en
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GB-496254-A
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GB-1653437-A
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GB
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A
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A
| null | 1937-06-15
| null |
B08B9/28
| null |
Improvements in or relating to the cleaning of bottles, jars or the like containers
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en
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496,254. Washing bottles. HILL ENGINEERING CO. (HULL), Ltd., T., HILL, T. E., and HARRISON, N. C. June 15, 1937, No. 16534. [Class 138 (i)] In a bottle-washing machine of the conveyer type, a detector and trip mechanism is arranged at the loading station for arresting the machine if a closed or stoppered bottle is fed to it. The foremost of a row of bottles 12-14 supplied by hand to each of a series of troughs 10 is raised by a ram 15 until its neck engages and raises a centring cup 20 which is slidable along a peg 24. The pegs are slidable through a fixed bar 26 and engage, at their upper ends, a pivoted bar 27. If a stoppered bottle engages a peg, the bar 27 is rocked to actuate trip mechanism 30-34 associated with a draw-bar 35 arranged between the starting handle and clutch of the machine. If the bottle neck is open, it slides over the peg without moving it. The bottles are raised along fixed guides 36 and pivoted guides 37. After the detecting operation, the guides 37 are turned to horizontal position, Fig. 5, to align the bottles with further pivoted guides 41. Pushers 38 force the bottles from the guides 37 to the guides 41, while the latter are horizontal, and the guides 41 are then swung down, Fig. 1, to position the bottles, with their necks in centring cups 44, in line with rinsing jets 43. After rinsing, the guides 41 are returned to the horizontal, and the bottles are forced by rams 47 into cups 48 on a conveyer which carries them to the washing stations. After washing, the bottles are delivered to a slat conveyer 52, for carriage to a filling or drying station, by pushers 50, pivoted guides 51, and pushers 53. A trip mechanism may be arranged at this point for stopping the machine if a bottle is not delivered to a guide 51. The rams 15 are actuated by counterweighted levers 16 freely mounted on a rock-shaft 17 carrying a bar 19 which supports the levers. The rock-shaft is rocked to an extent required by the smallest bottle to be handled, the bottles, whatever their length, being arrested by the cups 20. The centring cups 44 are pivoted to the guides 41 and are turned to horizontal position, by cams 42, when the guides 41 are horizontal. Bottles may be fed to the rams 15 from a slat conveyer. The trip mechanism 30-34 may be duplicated so that an operator must use both hands to restart the machine. Specification 466,484 is referred to.
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en
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GB-1466524-A
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GB-1661475-A
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GB
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A
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A
| null | 1975-04-22
| null |
B65G69/10
| null |
Reclaimer to reclaim blending or storage beds
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en
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1466524 Material pile reclaimer INTERNATIONAL HANDLING BV 22 April 1975 [2 May 1974] 16614/75 Heading B8E A reclaimer for a pile of material comprises a rotatable disc 3 having an open inner ring 5 connected by spokes 6 having teeth 8 to a boss 4 mounted on a bridge 1 running on bogies 2 and a closed outer ring 7 having blade or tooth shaped carriers 15. The disc 3 is rotated by a drive to a toothed ring round the ring 5 and is inclined at an angle between the angle of repose and the slide angle of the pile by inclining the bridge 1 relative to the bogies 2 about rocker shafts 9. Upon rotation of the disc 3 and advance of the bogies 2 the teeth 8 loosen material which falls down the pile face into the path of the carrier 15 of the ring 7 which carries the material along until it falls down the side slope of the pile and over a retaining wall 18 on to a discharge conveyer 19. The inclination and rotation of the disc 3 can be reversed so that the reclaimer can operate in either direction, the length of the teeth 8 can be adjustable, the inner and outer rings 5, 7 can be separately driven at different speeds and the centre of the disc can have rods extending further than the teeth 8.
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en
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GB-1000068-A
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GB-1668263-A
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GB
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A
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A
| null | 1963-04-29
| null |
B63B1/12
| null |
Demountable catamaran
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en
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1,000,068. Transporting special loads; catamarans. P. FADIGATI. April 29, 1963 [May 15, 1962], No. 16682/63. Headings B7A and B7B. A trailer for supporting a catamaran comprises a rectangular framework 20 carried by road wheels 22 and having secured to its upper side tubular members 23 which adjustably accommodate tubes 24 to which the U-shaped supports 26 are secured. The catamaran has a central deck part 13 releasably secured by bolts in appropriate recesses 15 in the hull parts 8. The catamaran is loaded on to the vehicle in its erected position and after the deck 13 and fore strut 10 have been removed the deck 13 may be secured upright in the brackets 28 whereupon the hull parts can be moved inwardly to reduce the overall width. The recesses 15 in the hull parts are preferably provided with a plastic covered stiffener. The hull parts are retained in position in the supports 26 by straps bolted across the tops.
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en
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GB-327330-A
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GB-1675229-A
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GB
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A
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A
| null | 1929-05-31
| null |
B60T11/04
| null |
Improvements in construction of vehicle brakes
|
en
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327,330. Drewry, J. S., and Shelvoke & Drewry, Ltd. May 31, 1929. Blocks and shoes acting on drums.-An internal expanding brake is operated by means of a ball located between two hollow cones. The shoes 1, 2 are provided with screw plugs 4 in which are formed hollow cones facing hollow cones in a lever 6 pivoted at 7. Between each two opposing cones is located a ball 10 making circular line contact with both cones and adapted to roll against the cone surfaces and separate the shoes when the lever 6 is raised by a lever 9. The point of contact of the two levers is in line with the steering pivot of a front wheel brake.
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en
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GB-474021-A
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GB-1675637-A
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GB
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A
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A
| null | 1937-06-16
| null |
H04J1/04
| null |
Improvements in or relating to multi-channel signal transmission systems
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en
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474,021. Multiplex systems. SIEMENS & HALSKE AKT.-GES. June 16, 1937, No. 16756. Convention date, June 18, 1936. [Class 40 (iv)] In a multiplex system employing two modulation stages, the first carrier frequency being the same for all the channels, and one side band being filtered out after each modulation, the carrier frequencies are so chosen in relation to each other and to the width of the speech bands that the upper and lower side bands resulting from the second modulation form two substantially continuous bands with a gap between them, so that the final filtering operation can be performed by a single filter for all the channels. In Fig. 1, the speech signals, which are limited to the range 0-3 kc. by filters AF1-3, modulate a carrier S, for example 6 kc. in modulators M11-13 and the lower side bands are eliminated by filters BF1-3. These bands within the range 6-9 kc. entermodulators M21-23 which are supplied with different carriers T1-3, for example 27, 30, 33 kc. The combined outputs ‹ comprise lower side bands 18-21, 21-24, 24-27 7 kc. and upper side bands 33-36, 36-39, 39-42 kc., and the lower side bands are eliminated bv a high-pass or band-pass filter GF (see Figs. 2, 3). The general conditions for this result are that S must be an integral multiple of the original band width a and that T1, 2, 3 ... must be consecutive integral multiples of a. If there are a considerable number of channels, they may be divided into several groups each of which share a common filter GF. Moreover two neighbouring groups may be arranged to share a single band-pass filter GF, which selects the upper side bands of the lower frequency group and the lower side bands of the upper frequency group (see Fig. 5).
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en
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GB-1007483-A
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GB-1675663-A
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GB
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A
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A
| null | 1963-04-29
| null |
B01D11/04
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GRAHAM GEOFFROY
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Process for the dispersion of uniform droplets of a liquid in a second liquid
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en
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1,007,483. Granulating. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 29, 1963 [May 9, 1962], No. 16756/63. Heading B5A. [Also in Division B1] Spherical grains of solid products with a predetermined size distribution are prepared from liquid starting materials by passing said liquid into a column of a second liquid through an injector positioned in said column and having a plurality of openings, and applying vibrations to the first liquid, e.g. by laterally or longitudinally vibrating the injector, or as shown, by applying a vibration to the liquid upstream of the injector. The continuous phase may be stationary or flowing in uniform or pulsed manner. In the Figure (which refers to liquidliquid extraction apparatus), a column is shown at 1 to which continuous phase is supplied at 2 and leaves at 3, and the phase to be dispersed is passed from a pressure tank 7 having a diaphragm 8 connected by rod 10 to variable frequency vibrator 9. The liquid then passes to injector 5 and droplets are formed, having a size equal to the flow rate through the individual holes of the injector divided by the frequency of vibration.
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en
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GB-640372-A
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GB-1677547-A
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GB
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A
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A
| null | 1947-06-25
| null |
B29C63/00
| null |
A process for the after-treatment of stamped dies
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en
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640,372. Embossing-surfaces. SEMPERIT GUMMIWERKE AKT.-GES. June 25, 1947, No. 16775. Convention date, July 28, 1941. [Class 100 (ii)] A process for the after-treatment of dies stamped from artificial material, which may chiefly consist of fibres impregnated with artificial resins, and which show a rough surface interspersed with minute pores at the blank portions, which therefore, when the dies are used for stamping printing formes out of plastic materials such as rubber, firmly adhere to the plastic mass so as to be difficult to separate therefrom, consists in closing the pores by applying pieces of fibrous fabrics impregnated with artificial resins to the blank portions and hot-stamping. Where the dies are composed of several fibrous fabrics, the pieces applied may be pieces of the material used to form the dies, and where the fabrics composing the die comprise several layers, a similar layer may be used. When the layer is in place, a flat stamping means, such as a smooth piece of sheet-iron, is applied and the assembly compressed to a predetermined height. When the die is withdrawn from the press, the blanks present smooth uniform surfaces.
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en
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GB-560963-A
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GB-1680042-A
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GB
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A
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A
| null | 1942-11-18
| null |
A01K31/07
| null |
Protection liner to fit in carrier pigeon container used in aircraft
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en
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560,963. Carrier-pigeon containers. KERRIDGE, A. E. Nov. 18, 1942, No. 16300. Drawings to Specification. [Class 5 (ii)] A liner for a carrier-pigeon container consists of cardboard or like base and cover members. The cover is formed from a rectangular strip having the opposite edges folded into rectangular prism formation; a triangular prism formed from a folded strip constitutes the ridge. The base tray has upstanding ends, one with a central opening and holes for passage of a string hanging from the cover. A renewable floor of corrugated material may be fitted.
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en
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GB-621017-A
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GB-1688344-A
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GB
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A
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A
| null | 1944-09-04
| null |
G05D3/14
| null |
Improvements in or relating to servo systems and automatic ranging devices
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en
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621,017. Automatic phase-displacement control systems. SPERRY GYROSCOPE CO., Inc. Sept. 4, 1944, No. 16883. Convention date, Aug. 16, 1943. [Class 38 (iv)] [Also in Group XL (c)] In an automatic control system in which a servomotor 15 having separately-excited stator and armature windings is driven in one or other direction in response to a signal voltage supplied to one of such windings (49, 51), over-riding manual-control means 11, 12 for driving the motor in either direction at a higher speed applies a swamping voltage to the said winding (49, 51) and at the same time increases the energization of the other winding. The invention is described as applied to a radar distance-measuring system in which reflected pulses and reference pulses are automatically kept in phase, the reference pulses being passed through a phase-shifter 21 driven by the motor and the setting of the phase - shifter providing an indication of the distance. Circuit 100 supplies a voltage, representing in direction and amplitude the phase difference between the two sets of pulses, to an amplifier 46 which accordingly controls the field windings 49, 51 to drive the motor in the appropriate direction to reduce this phase difference. In order to drive the motor at a higher speed than can be obtained by the automatic control circuits, e.g. to shift the area of operation rapidly from one end of the range scale to the other, one of the keys 11, 12 is operated to connect comparatively-high negative or positive potential from source 25 to conductor 27. This potential is applied through amplifier 46 to the field windings 49, 51 and also to the grid of a cathode-follower valve 31 which is so fed that its cathode is normally at about earth potential. The change of potential on the grid produces a corresponding change of potential at the cathode and in both cases a non-polarized relay 38 operates to short-circuit a resistance 102 in the armature circuit of the motor. Relay 38 also short-circuits a condenser 55 in an errorintegration network. Limit switches 61, 62 operated by the motor at either end of the range scale stop the motor by connecting earth over rectifiers 65, 66 to amplifier 46. Manual tracking may be effected by closing switch 98 and operating hand-wheel 88 to apply voltages from source 25 through potentiometer 95 to conductor 27.
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en
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GB-1377565-A
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GB-1688472-A
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GB
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A
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A
| null | 1972-04-12
| null |
G03B7/099
| null |
Detachable viewfinder
|
en
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1377565 Cameras KONISHIROKU PHOTO INDUSTRY CO Ltd 12 April 1972 [14 April 1971] 16884/72 Heading G2A Interchangeable view-finders 3 for mounting on a camera 8 each comprise a pentaprism 4, photo-electric elements 1, 2 and resistors 5, 6, 7 for providing linearity of output from low to high brightness and/or having valves appropriate to the angle at which the elements 1, 2 receive light from the pentaprism 4. The camera 8 may include an ammeter 10 and an electric shutter (not shown).
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en
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GB-1486521-A
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GB-1689375-A
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GB
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A
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A
| null | 1975-05-05
| null |
C25F3/00
| null |
Process of surface finishing especially of sliding surfaces
|
en
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1486521 Surface finishing using chemical attack GOETZEWERKE FRIEDRICH GOETZE AG 5 May 1975 16893/75 Heading C7E The finish of the sliding surface of a machine part is improved by applying to the surface a chemical substance which can attack the surface only at an elevated temperature, and the high spots of the surface are selectively heated to said elevated temperature whereby they are selectively removed. Heating may be achieved by running the surface against a harder, smoother, counter-surface, and/or by passage of an electric current between the surface and a counter-surface; the sliding surface and counter-surface-may be immersed in a melt, solution or dispersion which is independently heated to a temperature below the said elevated temperature. The chemical may be a halide, chalcogenide, chalcogenate, phosphate, phosphite, or phosphide. In Examples, a cast iron grinding wheel is coated with (1) NaCl + K 2 SO 4 or (2) NaF, and used as a counter-surface to smooth a metal rod; frictional heating is used to achieve the elevated temperature.
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en
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