| 摘要 |
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.
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