Catch-cord drawing device for looms
AssigneeDraper, Inc.
InventorPepper Y. Lai
Life of this patent
Estimating the term…
Abstract
The catch-cord selvage of a shuttleless or fluid jet loom is drawn between a pair of mating rollers having smooth surfaces under a prescribed tension that is matched to the fabric tension as it comes from the loom. The mating rollers include an idler roller which is driven by a drive roller, with the drive roller being positively driven without slippage by the fabric take-up roll. The surface speed of the drive roller is the same as the surface speed of the fabric take-up roll so that the catch-cord and the fabric are drawn from the loom at the same speed.
Claims3
A catch-cord selvage drawing device for use on fluid jet or shuttleless looms of the type wherein the woven fabric is taken off the loom under tension applied by a take-up roll, and wherein a plurality of catch yarns are introduced alongside the fabric sheet and adjacent one selvage thereof to catch and retain the cut ends of inserted weft yarns to form a "catch-cord selvage" thereof;
- said winding device being for the purpose of removing such catch-cord selvage and comprising:
- (a) a pair of cooperating rotating members for nipping said catch-cord therebetween and drawing therethrough;
- said pair of rotating members including an idler roller and a drive roller;
- said idler roller and drive roller including smooth outer surfaces for preventing entanglement of the catch-cord as it is being drawn therebetween;
- (b) synchronizing means for connecting said drive roller to the fabric take-up mechanism so that the surface speed of said drive roller is the same as the speed of the fabric as the fabric is removed from the loom onto the take-up roll;
- (c) said synchronizing means comprising:
- (i) a rotating shaft and means for mounting said drive roller thereon;
- (ii) a plurality of meshing, interacting gears connecting said rotating shaft and said take-up roll;
- (iii) said drive roller being mounted on one end of said rotating shaft in operative relationship with said idler roller;
- the surface diameter of said drive roller and the gear ratios of said gears being such that the tension on the catch-cord is substantially the same as the tension on the fabric;
- whereby the matching of the speeds of the catch-cord drawing device and the fabric take-up roll results in the same tension upon the selvage ends as is on the fabric.
Dependencies are inferred from the claim text.