Controlling pile warp thread tension in a terry loom

Details Controlling pile warp thread tension in a terry loom Controlling pile warp thread tension in a terry loom

1994-03-31

1995-10-17

Falik, Andrew M.

Textiles: weaving

Special-type looms

Irregular warp feed

139102, D03D 2708

Patent

active

054581605

ABSTRACT:
In a method for controlling the pile warp thread tension in weaving terry cloth webs, a thread tension is applied to the pile warp by the spanner beam during partial beat-up operations. The tension is removed or reduced in a controlled manner during each full beat-up motion of the weaving reed and is then reapplied in a controlled manner after the binding-in or interlacing of each pile loop row. An apparatus for carrying out the method includes a spanner beam (7) carried on the free ends of swing arms (6) of which the other ends are rotationally mounted on a supporting shaft (8). A pushing force element is operatively connected to at least one of the swing arms (6) to push the swing arm and therewith the spanner beam in one swinging direction and thereby apply a bias thread tension to the pile warp (4). A controllable pulling force element controlledly applies a pulling force to the swing arm (6) at appropriate times during a weaving operating cycle to counteract the pushing bias force and swing the spanner beam (7) in the other direction to relieve thread tension from the pile warp.

REFERENCES:
patent: 4293006 (1981-10-01), Peter
patent: 4569373 (1986-02-01), Vogel
patent: 4949759 (1990-08-01), Takegawa et al.
patent: 4974639 (1990-12-01), Maitan et al.
patent: 5099890 (1992-03-01), Duetsch et al.

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