Patent GB-688434-A (GB)
Title: Improvements in or relating to a punching machine
Inventor: HUEBER CARL JOSEPH
Filed: 1951-02-14
Abstract: 688,434. Selective punching-machines. ADDRESSOGRAPH-MULTIGHAPH CORPORATION. Feb. 14, 1951. No. 3572/51. Class 31 (ii). A machine for producing coded data-representing perforations 41 in printing and control devices D, Fig. 16, comprises a carrigae C, Fig. 2, for positioning the device D with respect to punches 50 which are actuated selectively by means including a cradle 54 and interposers 70, Fig. 10, which are individually shiftable to operative positions by means of manuallyoperable keys 75 associated with cables 76, and restoring means operative to return the interposers to their normal inoperative positions, Fig. 10, the restoring means being rendered ineffective when any one of the keys is slightly depressed from its normal position and being again rendered effective when such a key returns to its normal position. The restoring means comprises a plate 220, Figs. 10 and 11, pivoted on the cradle 54 and adapted to be rocked by means of a pin 222 disposed over one end of a pivotally-mounted operating lever 223 the other end of which has connected thereto a spring-influenced actuating rod 227 pivotally connected to the armature 229 of a solenoid 230, Fig. 13, so that when the solenoid is energized, the plate 220 is rocked counterclockwise to restore all the interposers. The cradle 54 is actuated by a cam-operated rocker 55 driven from a motor-driven main shaft 60 through a clutch 64 controlled by a solenoid 66, Fig. 1. The keys 75 are mounted on levers 80, Fig. 3, associated with bails 85 and 90. The solenoid 230 is connected with a switch 251, Fig. 3, mounted beneath the rear end of the arm 91 of the bail 90. When the bail is in its normal position, Fig. 3, the switch is maintained closed by an adjustable link 255 connected to the rear end of the arm 91. When one of the keys 75 is slightly depressed, the link 255 is raised permitting the switch 251 to open to de-energize the solenoid 230 and the rod 227 moves upwardly to rock the lever 223 and permit the restoring plate 220 to move under gravity to its vertical ineffective position. When the key is properly operated through its full downward stroke, the interposers 70 are set into their operative positions and the solenoid 66 is energized to initiate a cycle of punching operations in accordance with the code illustrated in Fig. 18 (not shown). The energizing circuit for the solenoid 66 includes a switch 100, Fig. 3, which is operated by the bail 90, and normally closed safety switches 263, Fig. 13, 266, Fig. 2, and 266C, Figs. 1 and 3. In the course of the punching cycle, a rocker 270 is shifted from its position shown in Fig. 13, in which the switch 263 is closed, to a switch-opening position, Fig. 15 (not shown), by means of a push rod 280 mounted on a bracket 225, Fig. 11, secured to the cradle 54, and is returned to its switch-closing position by means of a block 278 when the solenoid 230 is reenergized i.e. after the keys have been returned to their normal positions. The printing and control device D is similar to that described in Specification 609,252, which is referred to, in that it comprises two fields A and B either of which may be formed with the perforations 41. The carriage C is mounted on a carrier 116, Fig. 2, for shifting movement in a front to rear direction the carriage being spring-urged to its forward loading position and being releasably held in either of its operative positions, corresponding to the field A or field B, by means of a pawl 208, Fig.1, engaging one or other of two notches 210N formed in a bar secured to the carriage. The switch 266C is opened when the carriage is in its forward loading position. The carrier, which is urged to the left by means of a spring-urged tape 129, Fig. 2, extending from a spring drum 128, is fed longitudinally, to move the device D under the punches, by means of escapement mechanism comprising camoperated pawls co-operating with a rack toothed 115, Fig. 2, secured to the front of the carrier. A further pawl co-operates with the rack for back-spacing purposes. The escapement and back-spacing mechanisms are controlled by keys 102, 103, respectively, Fig. 1. The switch 266 is opened when the carriage moves beyond its extreme left-hand punching position. The wiring diagram and timing chart for the machine are illustrated in Figs. 19 and 20 respectively (not shown). Specification 609,252, [Group XVI], is referred to.