Reverse weaving mechanisms
AssigneeStaubli-Verdol S.A.
InventorUlrich Mutschler
Life of this patent
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Abstract
A coupling device for coupling a loom shaft to the shaft of a weft selecting device in a weaving loom, the device comprising two opposed discs having mutually engaging teeth which automatically respond to reversal in direction of rotation of the loom shaft to introduce a desired phase shift between the loom shaft and the weft shaft, the coupling device having automatic means for locking the disc teeth after each reversal in direction of the loom to maintain the newly phase-shifted mutual orientation of the discs.
Claims7
A coupling device for connecting drive from a loom shaft driving the grippers in a weaving loom to a drive shaft for weft selecting means, and for shifting the phase of the drive through a desired angle when the direction of the loom is reversed between its normal forward drive and reverse drive, the coupling device comprising:
- (a) a driven disc fixed to said selecting means shaft to rotate the latter therewith and having annularly spaced driven tooth means;
- (b) a drive disc disposed axially opposite said driven disc and rotatable with respect thereto and having drive tooth means extending axially toward the driven disc and interengaging with the driven tooth means thereon, the drive tooth means and the driven tooth means being annularly spaced to provide lost-motion angular clearance equaling the desired angle of phase shift when the loom direction is reversed;
- (c) means coupled between the loom shaft and the drive disc for driving the latter by the former;
- and
- (d) lock means carried by the driven disc for engaging the tooth means of said drive disc and operative automatically in response to reversal of the direction of rotation of the loom to lock said discs in their respective phase-shifted orientations.
Dependencies are inferred from the claim text.