Patent GB-507585-A (GB)
Title: Improvements in or relating to mechanism for perforating statistical record cards
IPC: G06C11/08
Filed: 1937-12-16
Abstract: 507,585. Cash registers. BRITISH TABULATING MACHINE CO., Ltd. Dec. 16, 1937, No. 34902. Convention date, Dec. 17, 1936. [Class 106 (i)] [Also in Group VIII] In a statistical record card perforating machine, the punching means comprises a plurality of slides arranged side-by-side and each formed with a longitudinal slot to receive a card fed lengthwise through all the slots, a separate die and punch carried by each slide and movable transversely of the slot, means for moving the slides individually in the direction of their lengths to position each punch differentially along a different column of a card, and punch-actuating means for forcing all the punches through the card and then withdrawing them. The invention is shown as applied to a cash register in which the slides 233, Fig. 2, are differentially set under the control of keys 11. Each slide carries a punch 237 and die 236 and is provided with a slot 234 to receive a card and with aligning notches 274 with which a bar 273 on a punch operating frame 253 co-operates. The frame 253 is reciprocated from a cam 257 through a link 259 and bell-cranks 263, 268. Eight manually settable slides 280 are provided for fixed data. The cards 195 are fed from a storage hopper 196 by a picker 194 reciprocated from a motor through a single revolution clutch mechanism which controls a switch for the motor, shaft 55, arm 53, link 184, segment 188 and gears 190, 192 on a shaft 191. The card,is fed to a storage hopper 278 by oscillating rolls 200, which are separated during reverse movement. A rack 206, reciprocated from the shaft 191 through a segment 202 and pin-and-slot 204, 205, rotates rolls 200 by suitable gearing, and by means of a pawl 219, lever 221 and arm 223 periodically raises the upper roll. The machine is started by depressing a motor release bar 133, Fig. 13, which depresses a link 137 and rocks a shaft 140 which closes a motor-switch and engages the clutch, Fig. 12 (not shown). Operation of the bar 133 to start the machine is prevented when a slide 296 pivoted to an arm 295 on a shaft 294 engages below a shoulder 298 on the link 137. Depression of a clerk's key rocks the shaft'294 to withdraw the slide 296. Rocking of the shaft 294 is prevented when (a) the supply hopper is empty, (b) the storage hopper is full, or (c) a card is not properly fed or positioned, by the following means. (a) A spring-pressed feeler 306, Fig. 5, projecting through the bottom of the hopper 196 rises when no cards are present and a projection 302 on a link 303 coupled thereto engages the end of a sector 305 on the shaft 294 to lock it. (b) A roller 341 on an arm 333 fixed to a shaft 332 moves towards the cards in the hopper 278 when the arm is rocked ; a spring 338 normally causes the arm to move with a bell-crank 330, 331 coupled by a link 329 to the lever 221, the bell-crank being loose on the shaft 332. When the hopper is full, a plate 336 is released and by means of an arm 344 rocks a shaft 320 to disengage a stop 322 from an arm 325 whereby an extension 326 engages the end of a sector 328 to lock the shaft 294. (c) A feeler arm 313 pivoted on a shaft 312 engages a card in punching position when it is rocked ; when the punch frame 253 descends, it rocks an arm 307 secured to a sleeve pivoted on shaft 312 and an arm 311 also fixed to the sleeve is connected to the arm 313 by a spring 315. If the arm 313 is not stopped by a card in position, it moves so that a pin 318 on its rear end engages an arm 319 to rock the shaft 320 and lock the shaft as described'above.