The distance of the pins in the racks in both systems of construction (American and French) corresponds to the distance of the rows in the card. The racks are generally constructed for 600, 900, and 1200 Jacquard machines. Of these three sizes the 1200 is the most advantageous, as cards can be cut for any smaller size machine. The rack of a 900 machine (French index) contains 88 pins, while that of a 1200 machine (French index) contains 114 pins.
[Fig. 10] illustrates the “catch” for holding the cards in the Uhlinger machine. This is fastened to the carriage when pressed by the hand on top in the direction of arrow, S; this catch will compress spring, D, in the direction of arrow, S´, thus opening the “blade,” C, (front view shown by [Fig. 11]), in the direction of arrow, S´´, thus allowing the card to be inserted and held, securely fastened to the carriage.
[Fig. 18] illustrates the side view of the carriage and its catch for holding the Jacquard card as used in the Royle machine. Arrow, S, indicates the pressure of the operator’s hand on lever, B, when the card is inserted. This lever presses by means of presser, D, in the direction of arrow, S´, on the double-acting lever, E, at c. This lever moving around its fulcrum, e, will lift catch, F, in the direction of arrow, S´´, thus allowing the card to be inserted. Spring, G, fastened to main part of carriage, A, by means of screw, a, secures the card to the catch. C, C´, are the carriage wheels, of which there are four.
Fig. 13.
Fig. 14.