Fig. 179
Fig. 180
Fig. 181
The cutting of four cards is given is [Fig. 181]. The crosses indicate the cutting of the odd and even holes in the cards, and the dots are the figure. It will be seen that the crosses in No. 3 card would reverse the shed formed by those in No. 1 card, thus working plain texture on the back cloth, and the same would take place with Nos. 2 and 4 cards for the face cloth. This is simply the action of the journals included in the harness, which it will be seen requires double the number of needles in the machine, and double the quantity of cards; but an ordinary machine and mounting will answer, instead of having to get a double machine and journals.
The above cutting acts the same as journals, and is all right in both cases when one warp with its own weft is used for each cloth; but it has been pointed out that when each warp is end-and-end of different colours with wefts to match, the under side of the cloth is defective when wrought with journals, and so it would be with the full harness if the cards were cut as above. To get each colour of weft bound with its own colour of warp on both sides of the cloth, the following change must be made:—Take the small piece of pattern given in [Fig. 182], and let the warps be as before—white and olive, red and black. The card cutting for this pattern will be as follows, the warp being drawn through the harness as before:
For the first card, cut odd numbers of red and even numbers of white on the first half, or first four holes, of the card, and white solid on the second half. This will form a shed for the red shot.