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 the power shaft at the same speed at which {HEAD ~ each} of {TAIL ~ 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 the power shaft at the same speed at which { HEAD ~ each } of { TAIL ~ the cranks } is rotated but with more torque
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