Weft feeding drum with laming array brake

Details Weft feeding drum with laming array brake Weft feeding drum with laming array brake

1989-02-21

1990-05-22

Falik, Andrew M.

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

242 4701, D03D 4734

Patent

active

049269127

ABSTRACT:
A weft feeding device, for weaving looms, of the type comprising a drum for winding the thread and an array of metallic laminas for braking the thread which unwinds from the drum. The metallic laminas are arranged on the surface of a rotational paraboloid. The paraboloid is fitted on the drum and is tangent thereto, to elastically engage a thread, at its own minimum-radius circumference. The paraboloid has one end rigidly coupled to a fixed supporting ring which encircles the drum, the other free of the paraboloid end being subject to the action of a movable ring which, when moved axially with respect to the paraboloid, varies the paraboloid's curvature in order to correspondingly vary the contact pressure of the laminas on the thread.

REFERENCES:
patent: 3995786 (1976-12-01), Deniega
patent: 4261526 (1981-04-01), Roj
patent: 4429723 (1984-02-01), Maroino
patent: 4434609 (1984-03-01), Schacht

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