Patent ID: 6553927
Filing Date: 2003-04-29
Classification: D05B,D05D

Abstract:
A spreader driving device of a sewing machine, comprising:a frame to be mounted on a back side of a presser foot of the sewing machine; a stepping motor having an output shaft and a drive gear on said output shaft to be driven by said stepping motor, said stepping motor being mounted on said frame; a support shaft mounted on said frame; and a lever having a sector gear on a rear end thereof, and having a spreader at a fore end thereof, said lever being pivotally mounted on said support shaft and being arranged such that said sector gear engages said drive gear; wherein said stepping motor is operable to rotate said output shaft in synchronism with an elevating motion of a needle bar so as to swing said lever about said support shaft such that said spreader reciprocates along an upper surface of the presser foot.