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