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US 4,227,554 AGranted
Device for regulating the winding tension of woven fabric on a loom
AssigneeSaurer Diederichs (Societe Anonyme)
InventorMichel F. Volland
Life of this patent
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AssigneeSaurer Diederichs (Societe Anonyme)
InventorMichel F. Volland
Estimating the term…
A loom has a winding system comprising a tension roller and a storage roller connected by means of an endless chain whereby the storage roller is driven by the tension roller with the interposition of a friction mechanism. A follower roller, in contact with the periphery of the roll of fabric wound around the storage roller, causes a rotary cam to rotate such that the movement of the latter is linked with the variation in diameter of the roll of fabric. Bearing against the profile of the cam is one end of an oscillating lever, the other end of which acts on the friction mechanism in order to modify the driving torque of the storage roller by the chain according to the diameter of the roll of fabric. The fabric tension regulating device can be applied to conventional looms and shuttleless looms.
A device for regulating the winding tension of woven fabric on a loom having a winding system comprising a driven tension roller, a storage roller spaced from and parallel with the tension roller and an endless chain connecting the rollers whereby the storage roller is driven by the tension roller, the device comprising a follower for contacting a roll of fabric wound around the storage roller, a rotary cam operatively associated with the follower so as to be movable therewith in accordance with variation in the diameter of the roll of fabric, a friction mechanism coaxial and rotatable with the tension roller, an oscillating lever bearing at opposed ends on the friction member and the profile of the cam whereby the driving torque of the storage roller is modified according to the diameter of the roll of fabric.
Dependencies are inferred from the claim text.