Chain stitch sewing machine - with rotary sleeve holder and chain sleeve coaxial with needle

摘要

Simple chain stitch sewing appts. with a rotary sleeve gripper and a chain sleeve coaxial with the needle, to the stem of which an interceptor collar is attached rotating around the needle axis at the upper edge of the looper sleeve, which together with the sleeve gripper is moved back and forwards below the stitch plate bore at the depth corresponding to the stitch spacing for withdrawal of the chain stitch yarn from the stock (bobbin) with the improvement whereby the appts. is not only provided with the two sleeves of equal height surrounding 260 degrees of the needle periphery, comprising a combined yarn interceptor collar and loop unwinding sleeve but also a loop sleeve cage, which can be fabricated as a single unit.