import cadquery as cq
w0=cq.Workplane('YZ',origin=(36,0,0))
w1=cq.Workplane('YZ',origin=(22,0,0))
r=w0.workplane(offset=-76/2).moveTo(0,17).cylinder(76,31).union(w0.sketch().arc((-95,9),(-61,-47),(-34,12)).arc((-64,0),(-95,9)).assemble().finalize().extrude(4)).union(w1.sketch().arc((39,14),(100,-7),(40,-33)).segment((79,-33)).segment((79,14)).close().assemble().finalize().extrude(-6))