Document Type and Number:
Japanese Patent JPS5245815
Kind Code:
B2
Abstract:
One or more groups of three or more endless friction surfaces are supported for rotation and engage and impart a false-twist to a thread engaged thereby as it moves in a path of travel substantially perpendicular to the path of movement of the rotating friction surfaces. The friction surfaces of each group are equally spaced apart and are sequentially engaged by the thread along contact points which lie on a screw-thread line, the pitch and direction of which is determined by the direction of rotation and the positioning of the friction surfaces. The textured yarn produced by the present false-twist device may have torque in either the S or Z direction, depending upon the direction of rotation and arrangement of the friction surfaces. The friction surfaces are disclosed in the form of endless belts, rotating disks having crowned outer circumferential surfaces, and rotating rings having curved inner yarn engaging surfaces.
Application Number:
JP3306173A
Publication Date:
November 18, 1977
Filing Date:
March 22, 1973
Export Citation:
International Classes:
D02G1/08