| 摘要 |
A cam carriage, provided with a jack-filled pattern wheel followed by a knitting cam system, travels along a needle bed of a flat-bed knitting machine. Those pattern-wheel jacks which are selected for operation by a jacquard mechanism cause selected needles to be transversely shifted away from the knitting cam system. The pattern wheel has a first and a second circumferential succession of jacks, and two jacks per interneedle interval of the pattern-wheel circumference. The needle-controlling portions of the jacks of the first succession are located at different heights from those of the second succession. Some groups of needles have jack-engaged members located at the height of the needle-controlling portions of the first jacks. The other groups of needles have jack-engaged members located at the height of the needle-controlling portions of the second jacks. As the cam carriage performs a stroke, and the pattern wheel performs a first rotation, the needles which the pattern wheel passes are controlled by the first circumferential succession of jacks. As the stroke continues, and the pattern wheel performs a second rotation, the needles which the pattern wheel passes during the second rotation are controlled by the second circumferential succession of jacks. Thus, a base pattern can have a width corresponding to twice the pattern-wheel circumference. The correlation between needle groups and the two circumferential successions of jacks is selectable, for implementing complex patterning effects.
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