Thread braking mechanism

Details Thread braking mechanism Thread braking mechanism

1984-09-04

1985-08-20

Gilreath, Stanley N.

Winding, tensioning, or guiding

Strand tensioning device

Clamp

B65H 5916, B65H 5922

Patent

active

045359563

ABSTRACT:
In a housing, two rollers having substantially parallel axes are freely rotatably journaled and bound between them a clamping bite. The thread to be braked is drawn through the clamping bite and thereby drives the rollers. A first of the two rollers is stationarily mounted in the housing. The second roller comprises a cover made of a rubber-elastic material. This second roller is journaled in a pivotable forked lever which is under the action of an angle lever. The second roller can be pressed against the stationary first roller with an adjustable operating bias by means of the angle lever and a force accumulator constituted by a tension spring. Spring means of a rapid braking device constitute a compression spring supported by a braking rod which is axially displaceable between two end positions. The compression spring acts upon a spring bush carrying a nose member. In one of the two end positions of the braking rod the nose member extends with play beneath an arm of the angle lever. In another one of the two end positions of the braking rod the nose member additionally transmits to this arm of the angle lever the force of the compression spring in order to initiate a rapid braking action of the two rollers.

REFERENCES:
patent: 3999724 (1976-12-01), Haring et al.

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