import cadquery as cq
w0=cq.Workplane('YZ',origin=(3,0,0))
r=w0.sketch().segment((-37,-15),(-22,-15)).segment((-22,-12)).arc((-30,-12),(-37,-9)).close().assemble().finalize().extrude(-46).union(w0.sketch().segment((-22,-22),(50,-22)).segment((50,15)).segment((-13,15)).arc((-49,7),(-22,-18)).close().assemble().reset().face(w0.sketch().segment((-41,-6),(-26,-12)).segment((-22,0)).segment((-22,11)).segment((-32,15)).close().assemble(),mode='s').reset().face(w0.sketch().segment((-22,-14),(-22,-3)).arc((-25,-9),(-22,-14)).assemble(),mode='s').push([(14,-4)]).circle(10,mode='s').finalize().extrude(40))