Patent GB-751008-A (GB)
Title: Improvements in record card controlled machines
IPC: C09K11/07
Filed: 1953-05-14
Abstract: 751,008. Statistical apparatus. MAUL, M. May 14, 1953 [May 20, 1952], No. 13552/53. Class 106 (1). A machine controlled by perforated cards arranged in groups in which the items of consecutive cards of a group are computed automatically in accumulators, and in which item computation is interrupted on a group change is characterized in that a summary card supplied from a special summary card magazine to a punching mechanism and punched under control of the accumulators is deposited, after punching, in the receiving pocket for the item cards between the grouped item cards, after the last item card of the last analysed group and before the first card of the next group. The machine operates with double deck cards of the type shown in Fig. 3 in which each of the decks comprises 30 columns, each including 6 hole positions according to the key shown in Fig. 2. The item cards are deposited in the magazine 11, Fig. 4, and are fed by card knives between feed rollers 19 below the control brushes gb<SP>1</SP>, gb<SP>2</SP> and subsequently below analysing brushes b<SP>1</SP> and b<SP>2</SP> which analyse the index positions. As the cards are sensed the whole value is not entered into the accumulator immediately, but the individual index hole values are entered one by one in accordance with the analysis. The setting of the accumulator mechanism takes place by means of a common drive. The accumulator place in respect of which a hole is sensed is clutched to the drive for the time during which the position is analysed. The drive for the accumulator is effected by a crank drive shown in Figs. 6 and 9 of known construction in which a constantly rotating member 24 reciprocates the crank rod 26 which is caused to move its far end through an ellipse the extent of which varies according to the setting of the guide 27 according to the positions indicated by numerals I, II, III, IV. The elliptical movement of the far end of the crank rod is transmitted into a reciprocating movement of the member 28 which in turn rocks the accumulator drive-shaft and pinion 41, Fig. 6, which is transferred through a gear mechanism to the shaft 59 having the gears 61 fast thereon, Fig. 12. In each accumulator place a pinion 61 is provided, which meshes with the pinion 62 which is firmly pressed on the ring 63. In the ring 63 there is provided a slot 63a accommodating the pawl 64 and spring 65. The ring 63 only rotates on the teeth of actuating wheel 66 upon which is pressed the remainder of the accumulator members. According to the value of the hole position each ring 63 driven by its pinion 61 will be rotated the correct amount representative of the value sensed. Declutching automatically takes place at the beginning of backward movement and the ring 63 will run back to its zero position. After total taking the accumulators are zeroised by sleeves 116 on shafts 69a, 69b, Fig. 10. There is provided in each ratchet-wheel 70 a recess 70b in which the spring 117 is located. When the accumulator-is to be set to zero the sleeve of the lower group of the accumulators rotates once in a clockwise direction, simultaneously the sleeve of the upper row of accumulators rotates once in counter-clockwise direction. According to the setting of the accumulator places the springs 117 drop into the slots one by one so that the accumulator wheels are carried round by the sleeve and zeroized. The accumulator is analysed by means of shaft 143, Fig. 10, which is shifted step-by-step in six steps by means of a hexagon on which are fitted cam discs 142 each co-operating with a spring contact 135. The cams are arranged in staggered relation by one sixth, and the springs are pressed against the contact bars 144 by the cams. The pressing of the springs against the contact bars corresponds to the timing of the index positions on the record card, and the contacts 144 are connected to their respective punching magnets for actuating the punch setting mechanism in known manner by means of the electromagnets W, Fig. 4. After punching, the summary card is fed into the pocket 13 after the last card of the group just analysed and before the first card of the next group. Specifications 674,572 and 751,100 are referred to.