import cadquery as cq
w0=cq.Workplane('YZ',origin=(-41,0,0))
r=w0.sketch().arc((-50,0),(-33,13),(-12,13)).arc((-35,19),(-50,0)).assemble().finalize().extrude(23).union(w0.workplane(offset=62/2).moveTo(36,-7).cylinder(62,14)).union(w0.sketch().segment((-33,-9),(-28,-10)).segment((-24,6)).segment((-28,7)).close().assemble().finalize().extrude(83))