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