Push feed lever 2 down . the machine performs reverse feed stitching as long as the lever is held depressed 向下方按压送布杆2 。在按压的期间可以进行倒缝。
2.
Link - driven feed machanism to reduce stitch errors to the maximum at high - speed or low - speed sewing and in feed or reverse feed for desirable sewing effect 为获得理想的缝制效果，采用连杆传动下送料机构，最大限度减少了高低速，倒顺缝纫时的针距误差。
