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