In {TAIL ~ this case}, {HEAD ~ the sewing machine} is preferred further to comprise a pulling device which is positioned behind the sewing device and is provided with a pair of horizontal rollers designed to pull the edge portions of fabric pieces to which the core material is already sewn for engagement thereof by simultaneously revolving with the edge portions clamped therebetween 
In
In { TAIL ~ this case } , { HEAD ~ the sewing machine } is preferred further to comprise a pulling device which is positioned behind the sewing device and is provided with a pair of horizontal rollers designed to pull the edge portions of fabric pieces to which the core material is already sewn for engagement thereof by simultaneously revolving with the edge portions clamped therebetween
REL 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 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