Abstract: A woven fabric comprising glass fibers cushioned from each other by organic fibers in the warp direction, the sinuosity of the glass fibers being less than or equal to the sinuosity of the organic fibers for a given length of woven fabric, and organic fibers in the fill direction has an extremely low degree of stretchability in the warp direction and exhibits high strength under tension in the warp direction. Abrasive belts comprising the woven fabric coated with an adhesive containing abrasive particles exhibit close to zero elongation, have long lives and can be repeatedly used for debarking logs.

Abstract: A stitch counter is disclosed for use on a sewing machine to count a predetermined number of stitches before stopping the machine and actuating the thread cutting mechanism. The counter is used in conjunction with existing control circuitry which includes a light beam generator and receiver located in front of the needle. The cloth being sewn interrupts the light beam, which allows the operator to select any sewing speed. The completion of the light beam after the end of the cloth passes, shifts the machine to a pre-set sewing speed and activates the stitch counter. The counter counts a number of pulses from a pulse generator on the machine, which are indicative of the number of stitches, before stopping the machine and actuating the thread cutter.

Abstract: Flame resistant, thermally stable yarns containing 50 to 80% by weight syndiotactic polyvinyl chloride fibers and 20 to 50% by weight polyester fibers spun together to form said yarns and fabrics made therefrom. The syndiotactic index of the polyvinyl chloride is at least 1.8 and preferably greater than about 2.