A tensioner for retaining the belt in {HEAD ~ operative relation} to associated gears or {TAIL ~ other elements} includes hooks which engage the apertures in the terminations 
to
A tensioner for retaining the belt in { HEAD ~ operative relation } to associated gears or { TAIL ~ other elements } includes hooks which engage the apertures in the terminations
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH