Yarn brake and process for tensioning at least two yarns in a te

Details Yarn brake and process for tensioning at least two yarns in a te Yarn brake and process for tensioning at least two yarns in a te

1981-08-03

1984-03-06

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Unitary multiple twist devices

57352, 242 4701, 242147R, D01H 786, D01H 1310, B65H 5906, B65H 5936

Patent

active

044346093

ABSTRACT:
A yarn brake and process for applying substantially uniform tension to at least two yarns moving from separate, cross-wound, supply packages of yarn in a textile yarn processing machine, particularly a two-for-one twister, is provided. The yarn brake mechanism includes a member defining an outer, frusto-conical shaped, yarn braking surface tapered in the linear direction of movement of the yarns, and a comb-like, braking, ring member slidably positioned around the braking surface for receiving the moving yarns in braking engagement between the braking surface and the ring member. The ring member has slightly spaced-apart teeth of pliantly elastic, springy material positioned therearound and extending therefrom generally in the linear direction of movement of the yarns. The teeth are inclined with respect to the ring both inwardly into contact with the braking surface and circumferentially in the direction of movement of the yarns so that at least two of the teeth overlap each other along each directrix of the braking surface and apply uniform tension to each of the at least two yarns.

REFERENCES:
patent: 2718363 (1955-09-01), Roberts
patent: 3926381 (1975-12-01), Lawson et al.
patent: 3995786 (1976-12-01), Deniega
patent: 4044962 (1977-08-01), Calamani et al.

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