Underneath the web of pattern material 10 a rotating feed roller 15 is mounted at {HEAD ~ one end} of {TAIL ~ housing} 11 
of
Underneath the web of pattern material 10 a rotating feed roller 15 is mounted at { HEAD ~ one end } of { TAIL ~ housing } 11
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH