The Jacquard Machine Analyzed and Explained / With an appendix on the preparation of jacquard cards, and practical hints to learners of jacquard designing

by E. A. Posselt

Fig. LXVI.

Fig. LXVII.

In the tying-up of Jacquard harness four heddles to one leash are generally used, as illustrated at c, in [Fig. LXVI.]; each heddle containing one warp-thread. [Fig. LXVII.] shows the arrangement of these four warp-threads, when using only one heddle to each leash, but in which the mail contains four eyes. This method is less frequently employed. Instead of using a 100 machine, as in [Fig. LXVI.],

A 200 machine (straight-through) will require 800 warp-threads for each division.
300 machine (straight-through) will require 1200 warp-threads for each division.
400 machine (straight-through) will require 1600 warp-threads for each division.
600 machine (straight-through) will require 2400 warp-threads for each division.
900 machine (straight-through) will require 3600 warp-threads for each division.
1200 machine (straight-through) will require 4800 warp-threads for each division.

To change the tie-up principle from the straight-through method to the point method, taking a 1200 machine using four heddles per harness-cord, 9600 warp-threads will be required for each division for repeat of pattern.

This little example plainly shows the great advantage of this method of tying-up looms for making the finest damasks, etc.

To explain the general method of this tie-up, commence with [Fig. LXVI.], which represents a 100 machine, three divisions, four heddles to one leash, eight compound harnesses.