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