A retracting force applied to the engaging means to dispense a predetermined length of fabric by controlling {HEAD ~ the revolutions} of {TAIL ~ the pincer rolls} 
of
A retracting force applied to the engaging means to dispense a predetermined length of fabric by controlling { HEAD ~ the revolutions } of { TAIL ~ the pincer rolls }
OTH OTH 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 TAIL TAIL