Yarn Tensioning Device
AssigneeTexas A&M University Corpus Christi
InventorPetru Aurelian Simionescu
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Abstract
A yarn tensioning device capable of delivering yarn under tension from a spool to a braiding, weaving or knitting machine consisting of a base and a center rod mounted perpendicular to the said base serving to locates the spool while allowing it to pivotally rotate. The device further includes a pawl jointed to the base either via a pin joint or via a flexural hinge and operates in conjunction with a ratchet solidly attached to the spool. The device further includes a compliant yarn guiding means which ensure that yarn reels off at an essentially constant tension. The yarn reel-off tension can be adjusted by modifying the operating length of a stiffening spring using a screw and jam-nut pair, and by limiting the maximum deflection of the compliant yarn guiding means.
Claims5
Yarn tensioning device capable to reel yarn off a spool at an adjustably preset tension comprising:
- a base;
- a center rod mounted perpendicular to the base;
- a spool solidly fitted with a ratchet which pivotally rotates about said center rod;
- a pawl which pivots relative to the base and engages said ratchet;
- a pawl stiffening spring the push force of which can be adjusted;
- a compliant yarn guiding means the deflection of which can be also adjusted.
Dependencies are inferred from the claim text.