Device for producing effect yarns and use of the device

Abstract

The device serves to produce effect yarns on process machines through the deliberate production of short lumps in the yarn through short-duration yarn overfeed and includes a device (A) for lateral yarn deflection which comprises a motor-driveable, servo-controlled yarn guide (3) with an adjustable stroke. A movement of the yarn guide (3) in the one direction effects a slight underfeed and a movement in the other direction effects a pronounced overfeed of the yarn (F, F2). The yarn guide (3) is attached to a traverse-motion element (2), formed by a flexible member which is rigid in the stroke direction, preferably by a wire rope, a string or a belt, by which it is driven. The yarn guide (3) effects the storage of a yarn length, in the form of a loop, which corresponds to the desired overfeed. The device is used in false-twist and air texturing machines.

Dependencies are inferred from the claim text.