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