American School of Correspondence, Nelson, Hector William, 1869- [from old catalog] · Chicago, Ill., American school of correspondence · leaf 31
23 JACQUARD MACHINES of friction by allowing the bottom of the book that is lifted to move back a little as the '^partner" hook is being pressed by the needle. This shape of hook saves the grate thiongh which the … bottom of the hook passes. Fig. 23 shows the position occupied by the hooks when one hook is lifted and the other hook (which passes through the same needle) is pressed off. The dotted lines show the original positions of the hooks.
Jacquard weaving
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