import cadquery as cq
w0=cq.Workplane('YZ',origin=(-30,0,0))
r=w0.sketch().segment((8,9),(12,9)).segment((12,-10)).segment((39,-10)).segment((39,-6)).segment((43,-6)).segment((43,1)).arc((29,10),(43,20)).segment((43,27)).segment((39,27)).segment((39,43)).segment((12,43)).segment((12,24)).segment((8,24)).close().assemble().finalize().extrude(16).union(w0.sketch().segment((-50,-44),(-17,-44)).segment((-17,-2)).segment((7,0)).arc((50,12),(14,38)).segment((14,44)).segment((-36,40)).segment((-35,26)).arc((-21,25),(-21,12)).segment((-50,12)).close().assemble().finalize().extrude(61))