Patent ID: 6226972
Filing Date: 2001-05-08
Classification: D01H,D02G

Abstract:
An alternate twisted yarn manufacturing method for twisting yarn, comprising:providing the yarn and a pulley having a shaft and pulley flanges;alternately repeating the operations in which the yarn is inserted in a yarn passage formed between the pulley flanges so that a flexure state is obtained, the shaft of the pulley being inclined in relation to the yarn passage plane to bring the yarn into contact with an inside portion of at least one of the flanges of the pulley as the yarn travels through the pulley, thereby generating twist in an opposite direction in the yarn entering the pulley as compared to the yarn exiting the pulley, andmoving the pulley shaft to perpendicular in relation to a yarn passage plane so as to eliminate contact between the yarn and the inside flange portions of the pulley, so that the yarn passage is in neutral position, wherein the yarn is not twisted by the pulley.