Fig. 144
Fig. 145
[Fig. 146] shows a portion of an ornamental pattern as it would be designed for a gauze ground of two threads of warp twisting round two = 4 in the split and 4 picks into each crossing of the gauze. This would require a 10-row machine, eight rows for the figuring harness and two rows for the doup standards. When two threads are twisting round two, it is not necessary to have a doup for each, though it may be desirable; but it suits very well to have both threads drawn through the same doup. It will be necessary to have a stronger doup in this case, but if the warp is very light it would have so much more to do in drawing up the heavy doup than if each thread was drawn through a very light doup that the latter had better be adopted; otherwise a stronger doup, with both threads through one, is simpler. On the pattern, the doups are raised by the dots, which must be cut on the proper line of the card, as before; both lines are dotted as if each thread had its own doup, but only the front dots of each pair are necessary. The shaded squares are for raising the crossing threads with the leashes for the open shed of the gauze. In this pattern it is necessary that the outline of the figure should go in steps of four warp ways, as there are four threads to the twist; but it is not necessary that it should go in steps of four weft ways. A better outline can be given to the figure by not adhering to this, though the perforations in the gauze will be to some extent sacrificed by being irregular; but this would be so in any case in order to raise the doup standard after the figure when the doups and leashes are gauzing alternately; they might be regularly started at one side of the figure, but this would probably make them more irregular at the other side. By following round the edges of this figure it will be seen that by a little care no blemish of any consequence need be left, though it will not be so perfect as when calculated to fall in as [Fig. 145].
Fig. 146
Any variety of simple gauze texture may be used, as well as the plain and honeycomb gauze, but unless there is plenty of space and the figures are plain and large, no very intricate crossings should be attempted, unless for stripes, as they would probably mar the outline of the figure; but if not, they may be used where suitable.