Jaws 14, 16 are fixably connected to {HEAD ~ endpieces} 56, 58, respectively, which are in {TAIL ~ turn} rotatably connected to mounts 52, 54, respectively 
Jaws 14 , 16 are fixably connected to { HEAD ~ endpieces } 56 , 58 , respectively , which are in { TAIL ~ turn } rotatably connected to mounts 52 , 54 , respectively
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH