Patent GB-864190-A (GB)
Abstract: 864,190. Calculating-apparatus. BUCHUNGSMASCHINENWERK KARLMARX-STADT VEB. Oct. 16, 1957, No. 32329/57. Class 106 (1). In an arrangement comprising an accounting- machine and an electronic calculating-machine, means are provided for transferring data in both directions, the differential racks of the accounting-machine having teeth associated with an electrical contact to produce, when moved, a series of pulses the number of which corresponds to the setting of the rack. Mechanical to electronic transfer.-Factors for multiplication are entered in the mechanical machine, transferred to the electronic machine, and the product is transmitted back to the mechanical machine. The control member 112, Fig. 1, is set for multiplication and as the carriage 107 is moving to printing position, the operating shaft 119, Fig. 4, is swung into the position A. Simultaneously with the movement of the printing mechanism 110, a member 8 moves and rocks a lever 12 to rock a frame 4 so that contact balls 2 are displaced into the paths of toothed racks 88, previously displaced in one direction, and during the return movement of which pulses corresponding in number to the entered digit are passed via contact springs 3 to a multiplicand store MD, Fig. 8, over lines 148-153. When the racks 88 are at their initial position, a lever 15 moves to return the frame 4 to its inoperative position. The carriage 107 now moves into the next column and the operating shaft 119 is swung into the position B. A contact 68 is closed to energize relays A and B, Fig. 8, so that the multiplier is transferred to a store MK over lines 154-159. When the carriage 107 moves to the next column, a contact 62 is closed to cause a multiplication control circuit MS to initiate multiplication at the completion of which energization of a magnet 54 initiates transfer of the product. Electronic to mechanical transfer.-The energization of a magnet 54, Fig. 5, causes its armature 122 to move and couple the shaft 18 to a toothed wheel 60 and close a contact 67 in the machine motor circuit. Simultaneously the operating shaft 119 is swung to position C by the control member 112, and the frame 4 remains in inoperative position throughout the transfer. Rotation of the shaft 18 causes a cam-actuated contact 43 to close, energizing relays C, D to connect the lines 148 to 159 to a contact 44 which is sequentially opened and closed by a lever and cam on the shaft 18. The resulting pulses step on the counters in the product store MP, and when any of these counters exceeds its capacity, a transfer pulse is emitted to energize a corresponding relay 76-87, which when energized causes upward displacement of a locking member 42, Fig. 7, to prevent further movement of a segment 35 so that the corresponding toothed wheel 28 of the totalizer registers the complement of the value previously in the electronic counter. When ten pulses have been supplied to the electronic counters, the shaft 18 will have rotated to such an extent that a lever 23 is pivoted by a cam to bring the toothed wheels 28 out of engagement with the segments 35 and into engagement with the racks 88. The subsequent travel of the racks 88 until dogs 90 on the toothed wheels 28 meet stop members 29 is thus of an amount corresponding to the complement of the numbers registered by the toothed wheels, that is, equal to the value originally registered in the product counters MP. The shaft 40 is turned back by the levers 45, 98-103, Fig. 6, and just before the product is printed, the levers 23 are swung back to reengage the wheels 28 with the segments 35 by the displacement of the member 8 acting on a pin 71. The electronic calculator and electromagnets 76-87 are also returned to their initial state. Engagement of a pin 126 with a projection 125 results in the pawl 52 being disengaged from the toothed wheel 60 and the opening of the contact 67 in the drive motor circuit.