FIG 4 shows {HEAD ~ the transverse hole} 186 in {TAIL ~ the output shaft} 160 
in
FIG 4 shows { HEAD ~ the transverse hole } 186 in { TAIL ~ the output shaft } 160
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH