The Jacquard Machine Analyzed and Explained / With an appendix on the preparation of jacquard cards, and practical hints to learners of jacquard designing

by E. A. Posselt

THE PERFORATED BOARD.

Fig. II.

The perforated bottom board, through which the neck-cords are passed, contains one hole for every hook in the machine, and is illustrated in [Fig. II.] separately. It shows the following measurements:

Entire width of board	=	8 inches.
Entire length of board	=	12 inches.
Thickness of board	=	3/4 inches.

Distance of holes from each centre,			{a, in length of board, 0.27 inch. (See l to b.)
			{b, in width of board, 7/8 inch. (See m to w.)

Distance of first row from the part of the frame illustrated in [Fig. I.], 2-3/4 inches.
Distance of first row from the rear part of the frame, 2-1/2 inches.

This board is fastened by screws to the frame at places indicated in [Fig. I.] by 11 and 12.