[Fig. XL.] is a fabric design executed on this principle: a to b, border; c to d, centre; b to a, repeat of the first border.
Straight-Through and Point Tie-ups Combined.
B.—For fabrics requiring for their centres a straight-through tie-up, and for their border on point tie-up one full division for each border.
This arrangement of both foundation tie-ups resembles the preceding. The only difference is found in employing the full division of the centre or point tie-up for each border instead of the half division.
Fig. XLI.
[Fig. XLI.] illustrates this method of tying-up adjusted to a 600 Jacquard machine. The centre of the fabric requires 400 needles and hooks in 6 repeats or divisions, or 400 × 6 = 2400 warp-threads. The border calls for 204 needles and hooks, point tie-up, one full division for each side, or 204 × 2 x 2 = 816 warp-threads. The arrangement of margin and selvedge, as applied on each side, is explained separately through ground plan of comber-board by fig. XLII. The margin calls for 8 needles and 8 hooks in machine, 6 repeats of same for each side, or 96 warp-threads. The selvedge is formed by 2, 4 or 8 needles, (working plain), and has 24 heddles for each side or 48 selvedge-threads in warp. These selvedge ends may, if preferred, be drawn two ends in one heddle. By adding these different systems of threads we find:
| Centre | = | 2400 warp-threads. |
| Borders | = | 816 warp-threads.(814 if point drawn only once.) |
| Margin | = | 96 warp-threads. |
| Selvedge | = | 48 warp-threads. |
| ----- | ||
| 3360 threads in warp. | ||
For the centre part of the fabric, needle and hook 1 to 400 are used.
For the border part of the fabric, needle and hook 401 to 604 are used.
For the margin part of the fabric, needle and hook 605 to 612 are used.