Double threads lock stitch seated type shoe-border

lining won'tbe pulled outside avoiding deformation of shoe shape it has adjustable sewing arm according to shoe shape the patented separable type transmission pulley will run 5 idle turns and cut off power automatically when encountering any obstacle in operation adjust speed by using P.L.V motor automatic needle positioning and lifting of presser foot easy and safe operation with low noisy Double stitching for water proof shoes can be finished at one time