import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,5))
w1=cq.Workplane('XY',origin=(0,0,72))
r=w0.workplane(offset=-61/2).moveTo(-74,80).cylinder(61,19).union(w0.sketch().arc((74,-35),(82,-37),(91,-35)).close().assemble().finalize().extrude(48)).union(w0.workplane(offset=95/2).moveTo(88,-94).cylinder(95,5)).union(w1.sketch().segment((71,17),(71,18)).arc((66,30),(71,41)).segment((71,43)).arc((64,30),(71,17)).assemble().finalize().extrude(-172))