1st. By a “skipper” at its rear fastened to the carriage, which moves in a rack of pins secured to the cutting table. This method of construction is used by the Uhlinger machine. Figs. 6 and 7 are front and side views of this mechanism. Figs. 8 and 9, the top view and sectional cut of the rack.
2d. The rack is fastened to the carriage, and the skipper to the table, thus reversing the first method. [See Fig. 19, top view.] This method of construction is employed in the Royle machine.
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. 19 represents the top view of Fig. 18, and is designed to show the arrangement of levers, wheels, and catches of the complete rack as used for a 900 machine. The letters indicating the different parts correspond with the ones used in Fig. 18.