Patent ID: 6095070
Filing Date: 2000-08-01
Classification: D05B

Abstract:
A drive means for feeding a material to be sewn on a sewing machine, which comprises(a) a feed dog,(b) a continuously rotatable rotary drive, and(c) an intermediate belt drive coupling the feed dog to the rotary drive, the intermediate drive comprising(1) a belt,(2) a drive wheel rotatable by the rotary drive, and(3) a driven wheel, the belt revolving around the wheels and having an excess length, a working portion of the belt leading from the drive wheel to the driven wheel and a return portion of the belt leading from the driven wheel back to the drive wheel, and the driven wheel being in rotary connection with the feed dog,(4) a control roller guiding the working portion of the belt, and(5) a tension roller guiding the return portion of the belt, the control roller and the tension roller being mounted for periodic reciprocation transversely to the direction in which the belt revolves to release and deflect the belt for decelerating, stopping and accelerating the rotation of the driven wheel.