Patent GB-759673-A (GB)
Abstract: 759,673. Statistical apparatus. MAUL, M. Feb. 5, 1954 [Feb. 10, 1953], No. 27465/55. Divided out of 759,639. Class 106 (1). A record card controlled machine for cross computing data on a card similar to that described in Specification 759,639 is provided with a multi-deck punched record card and is arranged to cross-compute in several card fields and is characterized by the combination of a cross result accumulator, means for automatically controlling the cross result accumulator consecutively by a plurality of card fields, a punching mechanism common to all decks, means for automatically punching the card the fields of which have been analysed under the control of the cross result accumulator in accordance with the setting of the latter, and means for selecting the card deck into which the cross result is punched on the presentation of the decks to the punching mechanism. The card used, shown in Fig. 1, has three decks of thirty columns each column comprising six hole positions which are employed according to the code in Fig. 2. The card is passed step-bystep under the analysing brushes. All columns of the three decks being analysed simultaneously but the individual hole positions of each column one after the other. The setting of the accumulator which is effected value by value takes place by means of a crank drive of known construction. Cards are fed from magazine 96, Fig. 3, by a card knife 97 to the rollers 98 and to the brushes b. As soon as the first position of all three decks is under the brushes b, entering of the punched values into the accumulator is effected, the card movement is interrupted until the first positions of all items has been transferred to the accumulator, the card is then fed forward until the second position is under the analysing brushes and so on. When all positions have been analysed the card is fed to a punching device 99 and the cards are passed under and punched. The selection of the punches takes place by means of magnets L. When one of the magnets is energized it attracts its associated armature 101 which moves the associated selector bar 102 so that the full depth is under the punch yoke 103 causing the punch to be driven through the card. The punched cards are deposited in the receiver 104. When the first data position arrives under the brushes the cam contact n<SP>1</SP>, Fig. 11, closes so that current flows through brushes b, via cam contact n4 thence via a known form of plug board, the item selector device W, through magnet Z of the accumulator and through cam contacts n<SP>1</SP> to positive. The corresponding magnets of the accumulator respond and the accumulator is operated in accordance with the setting of the crank drive. Shortly after the magnets Z have been energized the contact n<SP>2</SP> 1  closes so that the magnet D may receive current and displace the item selector device W one step forward. The selector arms are now set to the second row of contacts to which the corresponding brushes are plugged which analyse the second item. When the last data position of the last item has been entered into the accumulator cam contacts n<SP>4</SP> open and the card is fed to the punching device with the first data position under the punches. Punch selector magnets L are now energized according to the closed contacts Z<SP>I</SP> to Z<SP>IV</SP> and ZKI to ZK<SP>IV</SP> which are controlled by the accumulator and the accumulator reading mechanism respectively. After the first position has been punched the card is fed forward to bring the second position under the punches which are operated in accordance with the reading in the accumulator. The same operations are repeated for the succeeding positions. The plugging determines the deck into which the accumulator reading is punched.