Before commencing this work a clear conception of the tie-up and leasing of the heddles is required. The holes in the cards for the needles to penetrate, or the spots in cards where no hole is to be stamped, must be arranged in an uninterrupted chain from one row to the other, until all the rows are taken up. As previously mentioned, the method observed in tying-up the loom is the guide for stamping the cards. The number of ends required in a certain design may repeat only once in the number of hooks and needles employed in the Jacquard machine; or they may repeat two, three, or more times.
Fig. 23.
[Fig. 23] illustrates a design upon 40 warp-threads. [Fig. 22] shows the corresponding card, (French index), one-fourth of its actual size, for the first pick. In a 200 machine this design will repeat itself five times. The lace-holes and the peg-holes are blank. The reserve row (26th) is shaded, and the design as cut in card is indicated by black dots. This cut also shows the direction of reading each row to correspond with the numbering for the punch-heads, in Figs. [2], [3], [13], and card-guide in [Fig. 16]. The numbers 1 to 40, 41 to 80, 81 to 120, 121 to 160, 161 to 200, indicate the direction of stamping the design, as well as the five repeats to form the complete card. In this connection it will be of great advantage to examine [Fig. XXIX.], p. 28, under the head of the Jacquard Machine and its Tie-ups.
Fig. 24.
[Fig. 24] illustrates a Jacquard card (American index) stamped for ingrain carpets, one-half of actual size. This card illustrates the stamping for two textures, 1´ to 208´ being for “extra fine.” The 26 rows needed are shown full black, and marked to correspond. The peg-holes and lace-holes are left blank. In the other texture, or what is termed “extra super” ingrain carpet, the additional rows are represented by the shaded holes at the ends of the cards. Arrow, S, indicates the direction for commencing to read off each row.