As the fabric lying between gripping lines is tensioned by {TAIL ~ the component} of {HEAD ~ lateral displacement motion} of the gripping elements, the fabric is simultaneously gathered by the component of closing motion 
As the fabric lying between gripping lines is tensioned by { TAIL ~ the component } of { HEAD ~ lateral displacement motion } of the gripping elements , the fabric is simultaneously gathered by the component of closing motion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH