Yarn brake having an electromagnetically operated brake lamella

Details Yarn brake having an electromagnetically operated brake lamella Yarn brake having an electromagnetically operated brake lamella

1992-01-31

1993-09-14

Gilreath, Stanley N.

Winding, tensioning, or guiding

Strand tensioning device

Clamp

139450, 242150M, B65H 5922

Patent

active

052441644

ABSTRACT:
The yarn brake (1) having electromagnets (12, 12') and a brake lamella (2) has, on that side thereof that is remote from the yarn (3), a segmented layer (5) of soft ferromagnetic material. The layer (5) is effective to strengthen the magnetic attraction. Substantially platelike segments (55, 56) of the layer (5) are disposed in accordance with the operating ranges of the discrete electromagnets (12, 12') and have connections (60, 560) to one another and/or to the brake lamella (2). The connections (60) between the segments (55) are flexible. Because of the segmentation of the attraction-increasing segmented layer (5), the flexibility of the brake lamella (2) remains substantially unimpaired. The yarn brake can be released by electromagnets (12') disposed on one side of the segmented layer (5). By means of a blower (28) having nozzles (29) distributed over the length of the brake gap, fly can be removed from the braking surfaces when the yarn brake (1 ) is released periodically.

REFERENCES:
patent: 2907535 (1959-10-01), Mindheim et al.
patent: 3100091 (1963-08-01), Mindheim et al.
patent: 3633711 (1972-01-01), Pfarrwaller
patent: 4112561 (1978-09-01), Norris
patent: 4313578 (1982-02-01), Van Wilson
patent: 4641688 (1987-02-01), Gehring
patent: 4875506 (1989-10-01), Gacsay et al.
patent: 5002098 (1991-03-01), Desmet et al.

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