import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-1))
w1=cq.Workplane('YZ',origin=(-22,0,0))
r=w0.sketch().segment((-50,28),(-39,28)).segment((-39,1)).segment((-38,1)).arc((-29,19),(-10,14)).segment((-10,-2)).segment((-8,-2)).segment((-8,10)).arc((-7,6),(-7,1)).segment((9,1)).segment((9,4)).segment((8,4)).segment((8,48)).segment((-39,48)).segment((-39,29)).segment((-50,29)).close().assemble().push([(24,-25.5)]).rect(52,45).finalize().extrude(-12).union(w0.workplane(offset=14/2).moveTo(27,-6.5).box(12,1,14)).union(w1.sketch().arc((20,4),(24,5),(28,4)).segment((28,13)).segment((20,13)).close().assemble().push([(23,9)]).circle(1,mode='s').finalize().extrude(-21))