Wherein the interlinked linkage is configured by a pair of primary struts, and {HEAD ~ a pair} of {TAIL ~ secondary bars} pivotally interlinked with pinshafts at ends of the struts and the bars 
Wherein the interlinked linkage is configured by a pair of primary struts , and { HEAD ~ a pair } of { TAIL ~ secondary bars } pivotally interlinked with pinshafts at ends of the struts and the bars
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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