When the wedge lever 54 is further turned, the pushing lever 64 slides on {TAIL ~ the first flange} 55, and reaches {HEAD ~ the wedge lever} 54 
When the wedge lever 54 is further turned , the pushing lever 64 slides on { TAIL ~ the first flange } 55 , and reaches { HEAD ~ the wedge lever } 54
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH