Читать книгу The Jacquard Machine Analyzed and Explained - E. A. Posselt - Страница 8
THE PERFORATED BOARD.
ОглавлениеFig. 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 | = | ¾ inches. |
Distance of holes from each centre, | {a, in length of board, 0.27 inch. (See l to b.) |
{b, in width of board,⅞ inch. (See m to w.) |
Distance of first row from the part of the frame illustrated in Fig. I., 2–¾ inches. Distance of first row from the rear part of the frame, 2–½ inches.
This board is fastened by screws to the frame at places indicated in Fig. I. by 11 and 12.