Friction false twister

Details Friction false twister Friction false twister

1978-02-15

1979-01-23

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

False twist device

57100, D01H 792, D02G 102

Patent

active

041353560

ABSTRACT:
An improved rotatable twist tube device is disclosed for false twist texturing a continuous filament thermoplastic yarn being passed through the twist tube. The twist tube comprises a hollow shaft rotor constituted as the rotor of an electric motor. Two bell housings, one attached to each end of the motor body, house ball bearings which support the hollow shaft rotor near each of its ends. A friction bushing is positioned in each end of the hollow shaft rotor. The friction bushings each have a rounded front friction surface and have a back surface extending outwards from the hollow shaft rotor. The improvement comprises an annular extension of each bell housing which projects beyond the end of the hollow shaft rotor and encompass a portion of the adjacent bushing. The annular extension of each bell housing is adapted to prevent yarn wraps on the outside of the hollow shaft rotor by deflecting such wraps onto the surface of the friction bushing.

REFERENCES:
patent: 3066473 (1962-12-01), Maeda
patent: 3537250 (1970-11-01), MacKintosh
patent: 3656290 (1972-04-01), Krussaari
patent: 3948034 (1976-04-01), Gosden

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