The eccentric discs 213 are rotated in the same direction and at {HEAD ~ the same speed} as {TAIL ~ the cranks} 223 by the motion of the ring 215, thereby rotating the power shafts 214 
as
The eccentric discs 213 are rotated in the same direction and at { HEAD ~ the same speed } as { TAIL ~ the cranks } 223 by the motion of the ring 215 , thereby rotating the power shafts 214
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH