import cadquery as cq
w0=cq.Workplane('YZ',origin=(41,0,0))
r=w0.sketch().segment((-50,-5),(-43,-5)).segment((-43,17)).arc((-46,16),(-50,17)).close().assemble().reset().face(w0.sketch().arc((-30,9),(32,-18),(-20,25)).arc((-23,16),(-30,9)).assemble()).finalize().extrude(-82).union(w0.sketch().segment((-32,-40),(38,-40)).segment((38,-22)).arc((50,4),(38,29)).segment((38,40)).segment((-32,40)).close().assemble().finalize().extrude(-25))