As seen in FIGS 2 and 3, a blade support 16 journals {HEAD ~ a hinge pin} 18 which, in turn, pivotally supports {TAIL ~ the blade} 14 
pivotally supports
As seen in FIGS 2 and 3 , a blade support 16 journals { HEAD ~ a hinge pin } 18 which , in turn , pivotally supports { TAIL ~ the blade } 14
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH