{HEAD ~ a pair} of {TAIL ~ pulley flanges} defining a V space therebetween, one flange being fixedly positioned and the other being axially movable with respect to the fixedly positioned flange 
of
{ HEAD ~ a pair } of { TAIL ~ pulley flanges } defining a V space therebetween , one flange being fixedly positioned and the other being axially movable with respect to the fixedly positioned flange
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH