SEWING MACHINE STRETCHER MECHANISM Russian patent published in 2005 - IPC

FIELD: sewing engineering, in particular, equipment for sewing machine with disk-type transporting parts.

SUBSTANCE: stretcher mechanism has contour follower composed of two rings connected with one another through pins so that outer ring may be offset relative to inner ring, followed by fixing of their relative position. Roller race for ball is provided on inner surface of race. Balancing load is adjustably fixed on one of pins. Torsion spring is positioned on spindle, with one end of spring being fixed on sewing machine stop and other end being fixed on finger with ball.

EFFECT: reduced power and inertial loads applied to main shaft of sewing machine and increased service life of stretcher mechanism.

2 dwg