Textiles: spinning – twisting – and twining – Apparatus and processes – False twist device
Patent
1981-06-12
1983-07-05
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
False twist device
57339, 57348, D02G 108
Patent
active
043910912
ABSTRACT:
A yarn false twisting apparatus and method is provided which permits ready conversation from S to Z twist, or vice versa. The apparatus comprises a pair of friction discs which are rotatably mounted on a common carrier plate, and the discs are rotated in opposite directions by a drive system which includes a whorl mounted to each supporting shaft, and an endless drive belt having a run which engages opposite sides of the two whorls. The carrier plate is designed to permit the respective positions of the two discs to be reversed, and the direction of rotation of each disc to be reversed, to thereby convert from S to Z twist, or vice versa. In other embodiments, conversion between S and Z twist may be effected by the axial displacement of the two discs, or by the use of the two pressure applying members which define two separate twisting zones and which are alternately actuated.
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Barmag Barmer Maschinenfabrik AG
Petrakes John
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