In this case, {HEAD ~ the pushing lever} 64 is supported by {TAIL ~ the first flange} 55 of the wedge lever 51 as explained above 
In this case , { HEAD ~ the pushing lever } 64 is supported by { TAIL ~ the first flange } 55 of the wedge lever 51 as explained above
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH