Pattern-card.
（Wearing.) One of the perforated cards in a Jacquard loom through which the needles pass; the perforations are according to the pattern. Fig. 3569 shows the pattern-cards and pattern-box detached from the loom. The box is perforated with as many holes as there are warp-threads, and rods connected with each thread are suspended over it. The pattern-cards are perforated to correspond with the figure to be woven. As the box revolves, carrying the cards successively over its faces, the rods drop down whenever the holes in the cards and box coincide, each rod lifting its own warp-thread. The cards are hung together in an endless belt, as shown in the figure. See also pages 1356, 1357.
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| Pattern-card of Jacquard loom. |
