Patent GB-362629-A (GB)
Title: Improved machine for punching cards employed in jacquards for weaving-looms
IPC: D03C17/00
Filed: 1930-11-15
Abstract: 362,629. Punching jacquard cards. WADSWORTH & CO., Ltd., WADSWORTH, F., and ROBINSON, H., Perseverance Works, Droylsden, near Manchester. Nov. 15, 1930, No. 34385. [Class 142 (i).] Relates to a machine for punching on a blank card holes corresponding to those in a model card used in jacquards for weaving and of the type wherein the blank and the model are placed on a table 11, Fig. 1, provided with a perforated guide plate and movable horizontally beneath a vertically movable headstock 15 having a row of guide needles &c. 13 for entering holes in the model card and a row of punches 14 for perforating the blank. Means are employed whereby after the table has been moved to its initial and,front position, it may be retained therein for an indefinite time with the machine running to enable the operative to place a fresh card in position. Means are also employed for quickly returning the table to its normal position after a card has been punched and also means for preventing the guide needles from descending when the table is being moved to its front position. The table is reciprocated by means of a chain 17 passing around a wheel 16 on a sleeve 9 loose on a driven shaft 6, but adapted to be clutched to this shaft to effect a quick return movement of the table to its initial front position, after the blank has been punched. A lever 8 on the sleeve is caused by a spring 10 to engage a stop b when the table is in its initial position. To start the punching operation, the operative by means of a handle 12 moves the table somewhat to the right until the model card comes into correct position under the guide needles &c. 13. In this position, a finger &c. 57, Fig. 10, in a carriage pivoted to the table 11 and a second finger &c. 56 on a spring- controlled slidable block on this carriage respectively contact with teeth on racks 36, 38, which are rocked about a pivotal point 43x by lever mechanism described. The spring 10 having passed beyond the shaft 6 now tends to turn the sleeve and move the table to the right, the rack mechanism governing this movement and causing it to take place in steps. The rack 36 is caused to slide to and fro on the rack 38 by the actions of the fingers &c. 56, 57 and during its movements to the right operates lever mechanism, which moves aside a lever 47 pivoted on a vertically movable frame 29 carrying the needles 13 and thus prevents this lever from latching on a fixed part. At the end of the punching operation, the pivoted carriage furnished with the finger &c. 57 engages a fixed stop and is rocked, whereby the fingers 56, 57 are disengaged from the racks 36, 38. The rack 36 being no longer operated the lever 47 is allowed to latch on the fixed part and arrest the descent of the frame, so that during the return of the table to normal position, the needles 13 are prevented from engaging the cards. The return movement of the table is effected by the engagement of a device 25 pivoted on the loose sleeve 9 with a notched member 22 keyed to the driven shaft 6. As the punching proceeds, and the sleeve 16 is rotated, the device 25 moves from a position shown in Fig. 4, where it hangs in an inoperative position first to a position shown in Fig. 5, where it rides on a member 19 provided with a notch 23 and surrounding the member 22, and finally into the notch 23 and into engagement with the member 22. The position of the member 19 can be adjusted by a flexible member 20 connected to a shaft furnished with a handle 21. The punches 14, Fig. 7, are controlled by bolts 26 operated by bell-crank levers 27 acted upon by the needles 13.