Patent ID: 6263812
Filing Date: 2001-07-24
Classification: D05B

Abstract:
Looper thread take-up structure of sewing machine capable of very easily clearing up tangling thread, comprising:(a) a rotary shaft; a first take-up cam plate having a cam outer rim and a non-circular shaft hole detachably keyed on the rotary shaft;(b) a second take-up cam plate having a cam outer rim and a non-circular shaft hole detachably keyed on the rotary shaft; and(c) a spacing ring having a through hole and fitted on the rotary shaft between the first and second take-up cam plates for spacing the same, the spacing ring being detachable from the rotary shaft, whereby in case a stitching thread is accidentally tangled on the spacing ring, the first and second take-up cam plates can be separated from each other for easily clearing up the tangling thread.