The cranks confine the motion of {HEAD ~ each} of {TAIL ~ the transmission rings} to a non rotary, planetary motion 
of
The cranks confine the motion of { HEAD ~ each } of { TAIL ~ the transmission rings } to a non rotary , planetary motion
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH