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