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