{HEAD ~ This particular attitude} of {TAIL ~ small roller} 50 assists in tending to lift and maintain the side edge portion 21a in the bight of the U shaped guide bar 48, keeping the sheet material from migrating downwardly and out of the guide bar 
of
{ HEAD ~ This particular attitude } of { TAIL ~ small roller } 50 assists in tending to lift and maintain the side edge portion 21a in the bight of the U shaped guide bar 48 , keeping the sheet material from migrating downwardly and out of the guide bar
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 OTH OTH OTH OTH OTH OTH OTH OTH