Each of the crankpins 224 will describe a separate circle, and the center of the ring 215 which coincides with the center of the eccentric disc 213 travels in {HEAD ~ a circular path} about {TAIL ~ the axis} of the shaft 211 
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Each of the crankpins 224 will describe a separate circle , and the center of the ring 215 which coincides with the center of the eccentric disc 213 travels in { HEAD ~ a circular path } about { TAIL ~ the axis } of the shaft 211
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 REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH