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Image Number 2 for United States Patent #4224967.
In order to keep the tensions applied to the warp yarns within a predetermined range throughout the weaving operation of the loom, an improved warp tension control mechanism is herein proposed which generally comprises a length regulating mechanism for regulating the length of the warp yarns fed from a yarn beam per unit time, a tension lever for applying tensions to the warp yarns by the aid of biasing mechanism, and a tension reducing mechanism which is operative to lessen the biasing force produced by the biasing mechanism thereby to reduce the tensions in the warp yarns in response to the continuous reduction of the outside diameter of the body of the warp yarns wound on the beam.
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