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US 4,407,767 AGranted
Drawing and beaming a weftless warp of yarns
AssigneeMonsanto Company
InventorDouglas K. Seaborn
Life of this patent
Estimating the term…
Abstract
A weftless warp of yarns being drawn and wound on a beam is fed through a tension detector, located prior to the drawing step and responsive to tension in any of the yarns equalling a predetermined non-zero level, for stopping the process. This prevents damage to or breakage of a yarn which might have become snagged in the warp source.
Claims2
A beaming process, comprising sequentially:
- a. feeding a weftless warp sheet of spun yarns from a source through a tension detector;
- b. drawing said warp sheet;
- and
- c. winding said warp sheet onto a beam;
- d. said tension detector comprising:
- (1) a yarn accumulator for continuously storing a quantity of each yarn constituting said warp sheet;
- and
- (2) means, responsive to occurrence of tension in any given one of said yarns equal to a predetermined level, for releasing the stored quantity of said given one yarn whereby the tension in said given one yarn does not exceed said predetermined level.
5 more elements
Dependencies are inferred from the claim text.