In either case, the power applied imparts non rotary, planetary motion to the power transmission ring to turn the eccentric about the axis of the power shaft, thereby rotating {HEAD ~ the power shaft} at the same speed at which {TAIL ~ each} of the cranks is rotated but with more torque 
In either case , the power applied imparts non rotary , planetary motion to the power transmission ring to turn the eccentric about the axis of the power shaft , thereby rotating { HEAD ~ the power shaft } at the same speed at which { TAIL ~ each } of the cranks is rotated but with more torque
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH