As {HEAD ~ the first and second rotatable portions} of {TAIL ~ the machine} are brought toward one another, the wedge members act on the tapered surfaces of the sleeve forcing the sleeve to radially expand and firmly grip the work piece 
As { HEAD ~ the first and second rotatable portions } of { TAIL ~ the machine } are brought toward one another , the wedge members act on the tapered surfaces of the sleeve forcing the sleeve to radially expand and firmly grip the work piece
OTH HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH