Suppose we have a texture of 100 in the comber-board, to lower to 66 ends per inch. 66 ends, or the nearest even part of 100 (66-2/3) is 2/3 of 100; hence, we only need two-thirds of our machine; and as the same is supposed to be arranged 12 rows deep, we need 2/3 of 12 rows, or 8 rows. The four rows thus found necessary to drop may be dropped from the ends, or alternately, as follows:
Every alternate 2 rows taken, 1 row missed, 4 times over, = 12 rows. Or, 2 rows missed, 8 rows taken, 2 rows missed, = 12 rows.
Comber-boards made in Strips and Adjusted afterwards in a Frame.
By these comber-boards which are used to a great advantage on narrow loom work up to 36 inch fabrics, we can change the texture for the fabric; for the strips composing the comber-board may be drawn apart, thus changing the higher texture to lower; whereas in a solid comber-board this could only be done by re-tying the harness or changing the number of needles used in the machine. To give a clear understanding Figs. [XVIII.], [XIX.], [XX.] are needed.
[Fig. XVIII.] represents an 8-row deep comber-board, a, b, c, d, composed of 10 strips which are set close together. By examining each strip 5 cross-rows of holes will be found, making the whole number of holes 400.
Suppose the comber-board as represented in [Fig. XVIII.] is intended for a texture of 100 ends per inch; this will give for the width of the fabric (i, k, to l, m,) 4 inches.
Fig. XIX.
