import cadquery as cq
w0=cq.Workplane('YZ',origin=(-7,0,0))
w1=cq.Workplane('YZ',origin=(-19,0,0))
r=w0.sketch().arc((31,-18),(40,-30),(35,-16)).arc((34,-19),(31,-18)).assemble().finalize().extrude(-10).union(w0.sketch().segment((-50,-2),(-13,-2)).arc((39,-34),(14,22)).arc((-11,44),(-18,11)).segment((-50,11)).close().assemble().push([(18,-29.5)]).rect(24,15,mode='s').reset().face(w0.sketch().segment((6,2),(30,2)).segment((30,17)).segment((13,17)).arc((10,12),(6,9)).close().assemble(),mode='s').push([(20.5,19)]).rect(3,4,mode='s').finalize().extrude(54)).union(w1.sketch().push([(-16,-29.5)]).rect(38,31).push([(-21,-30.5)]).rect(10,21,mode='s').push([(-9,-16)]).circle(2,mode='s').push([(-7.5,-44.5)]).rect(1,1,mode='s').finalize().extrude(-28))