At the same time, there is essentially no lost motion during the vertical movement of the link which drives the arm 71 posititvely in {HEAD ~ accordance} with {TAIL ~ movement} of the rod 52 
with
At the same time , there is essentially no lost motion during the vertical movement of the link which drives the arm 71 posititvely in { HEAD ~ accordance } with { TAIL ~ movement } of the rod 52
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 REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH