A takeup mechanism for applying {HEAD ~ tension} to {TAIL ~ the tension member} is located beneath the frame 
to
A takeup mechanism for applying { HEAD ~ tension } to { TAIL ~ the tension member } is located beneath the frame
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH