Textiles: weaving – Warp manipulation – Feeding
Patent
1979-07-20
1981-03-17
Jaudon, Henry
Textiles: weaving
Warp manipulation
Feeding
D03D 4912
Patent
active
042561477
ABSTRACT:
A weaving loom is equipped with a system for controlling oscillation of a warp yarn support roller in which a first rotary cam actuates an oscillating first lever connected to a first arm integral with a first shaft on which the roller is mounted. The first shaft rests, through the intermediary of raising members, in bearings supported by second levers pivoting about a fixed pivot and connected, through the intermediary of pivoted connecting rods, to the third and fourth levers which are keyed to a second shaft and subject to urging by at least one spring. The system includes a fifth lever keyed to the second shaft and a second rotary cam actuating an oscillating sixth lever pivotably connected to a second arm which is alongside the fifth lever and is freely mounted on the second shaft. A fixed first hook is mounted on the second arm and a pivotable second hook is mounted on the fifth lever. An electromagnet holds the second hook clear of the first hook except when the loom is being started. In this event the second cam causes the second arm to pivot downwards about the second shaft so that the first hook pushes the second hook downwards causing the fifth lever to pivot downwards and rotate the second shaft. This rotation throws the connecting rods which pivot the second levers which move the support roller transversely to warp yarn passing thereover to increase tension in the yarn.
REFERENCES:
patent: 2551920 (1951-05-01), Willis
patent: 3495631 (1970-02-01), Sakamoto
patent: 3860044 (1975-01-01), Mizuno
Jaudon Henry
Ross Karl F.
Saurer - Diederichs Societe Anonyme
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