Device for spacing turns of thread for weft feeders

Details Device for spacing turns of thread for weft feeders Device for spacing turns of thread for weft feeders

1997-09-02

1999-04-06

Mansen, Michael

Winding, tensioning, or guiding

Unidirectional winding and unwinding

Shifting material axially on support

139452, D03D 4736, B65H 5120

Patent

active

058906703

ABSTRACT:
A device for spacing the turns of thread for weft feeders, which comprises a set of turn movement rods which are connected to a hub by respective spokes, wherein the hub is mounted so that it can rotate freely on a bush which is fitted on an eccentric portion of the driving shaft of the feeder and is inclined at a constant angle with respect to the axis of said eccentric portion in order to cause the cyclic and partial protrusion of the rods from corresponding slots of the drum of the feeder, and wherein the keying angle of the bush on the eccentric portion of the driving shaft is variable in order to correspondingly vary the spacing pitch of the turns on the drum. According to the invention, the axis of the bush, in the configuration in which the keying angle is zero, intersects the axis of the driving shaft in a point which is adjacent to the free end of the drum and is located, relative to the advancement direction of the thread, downstream of the transverse plane that contains the axes of the spokes.

REFERENCES:
patent: 2244119 (1941-06-01), Samerdyke
patent: 3796386 (1974-03-01), Tannert
patent: 4632154 (1986-12-01), Maina
patent: 4638840 (1987-01-01), Ghiardo et al.
patent: 4747549 (1988-05-01), Balzarotti
patent: 5520226 (1996-05-01), Pedrini

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