Patent GB-465517-A (GB)
Abstract: 465,517. Calculating machines. McCLURE, E. C. Sept. 5, 1935, No. 24736. [Class 106 (i)] A multiplying-machine is provided with mechanism for collecting the digits of partial products comprising denominational groups of slidable collecting plates each plate being controlled by a stop set in accordance with the particular digit to be collected by that plate, the stop for each plate except the first or lowest in any group being mounted on the plate below, so that the highest or final plate in a group moves a distance equal to the sum of the distances moved by the other plates in the same group. To illustrate the invention, the partial products formed by multiplication of the multiplicand ú24 15s. 10¥d. by the multiplier 7 will be described. Obtaining the partial products. There is a pair of rotatable stepped product plates 115, Fig. 1, for each denomination, e.g., a pair for the fractions (eighths) of pence, a pair for the pence, a pair for the units of shillings, a pair for the tens of shillings, a pair for the units of pounds, &c. The plates are divided into sectors, one for each amount which can be set in the corresponding denomination. Thus the fractions plates are divided into eight sectors, the pence plates into twelve sectors, and so on. The plates are first rotated, by means described in Specification 440,180, through various angles to bring the sectors corresponding to the digits of the multiplicand into operative position opposite a slotted member 149. Arms 141 are then rotated, as described in the said Specification, in accordance with the multiplier digit, to bring pins 152 sliding in the slots 149 opposite those steps in the selected sectors corresponding to the digits of the partial product of the multiplicand by the set multiplier digit. The main shaft 232 is then rocked and cams thereon release arms 600 which then turn clockwise about the pivot 272 under the action of springs 207 until the pins 152, moving in slots 144 in the arms 141, contact with the bottoms of the steps in the plates 115. The arms 600 thus take up differential settings corresponding to. the digits of the partial product. In certain denominations, the arms 600 have an extra step of movement for reasons explained below, this being obtained by making the initial position of the pins 152 one step away from the periphery (zero) of the plates 115. Collecting the digits of the partial products and transmitting them to the totalizer. The arms 600 are connected to bell-cranks 631 pivoted at 632. Some of these cranks are connected to vertical slides 635, and others to similar vertical slides having horizontal extensions 637. The slides 635, 637 co-operate with vertical setting rods 618 .. 628 controlling slidable collecting plates 601 .. 614, Figs. 2 and 3, by means of stops 618a, 619a, &c. with vertical setting rods 618 .. 628. In the example chosen, the first of the fractions pair of plates will present a step two units deep to its pin 152 (7Î¥d.=7Î6/8d=5d+2/8d) and the pin 152, arm 600 and setting rod 618 will move through three steps, since this pin 152 is one of those that has an extra step. The stop 618a of the setting rod 618 co-operates with steps 638 in the first collecting plate 601 whereby, when this plate is released, it moves three steps to the right under spring action. The collecting plate 601 has a second series of steps 660 cooperating with a projection 649a on the actuating bar 649 for the fractions wheel of the totalizer 716, Fig. 1. The first step of the plate 601, Fig. 2, moves a long slot 660a from beneath the projection 649a and the two remaining steps being the second step 660 beneath the projection 649a whereby, when the actuating bar 649 is released, the amount " 2 " is registered in the fractions denomination of the totalizer. The second fractions product plate 115 similarly transmits 5 (pence) to the plate 602 by the setting rod 619. The first pence setting rod 620 is arranged to slide vertically on the plate 602 and to move horizontally with the plate. The lower end of this setting rod 620 thus moves along the slide 637 which slide is positioned vertically eleven steps from its normal position by the first pence plate 115. (10d Î 7 = 5s-10d; 10+1=11). The rod 620 has a stop 620a controlling the collecting plate 603 by means of steps 640. The plate 603 thus moves through 16 steps-5 steps being derived from the plate 602 and 11 steps from the rod 620. This movement represents 1s: 3d, being the sum of 5d from 7 Î <6>/8d plus 10d, from 7 x 10d. Three steps for 3d are transmitted to the pence wheel of the totalizer by an actuator 650 coacting with steps 661 in the plate 603. When (as in the present example) the plate 603 moves through more than eleven steps, a cam part 667a rocks an arm 669 on a sleeve 671 to transfer one shilling to the plate 606. The second of the pair of pence product plates 115 gives the shillings component (5s) of 7 x 10d and this is transmitted to the collecting plate 604 by a setting rod 621. The setting rod 622 controlled by the first product plate 115 of the units of shillings denomination is arranged to slide vertically on the collecting plate 604 and to control a plate 605. The plate 605 carries a slide 673 controlled by an arm 672 on the sleeve 671 which, is rocked by the transfer mechanism 669 associated with the final pence plate 603. An arm 673a attached to the slide 673 control the final units of shillings collecting plate 606 which in its turn controls the actuator 651 of the units of shillings denomination of the totalizer. The plate 606 thus has a movement corresponding to 6 steps (the units of 7 x 5s+ 1) derived from the rod 622, plus 5 steps (the shillings of 7 x 10d) from the rod 621, plus 1 step transferred from the pence plate 603. The tens of shillings final collecting plate 609 is operated in a similar manner, but the steps 663 which control the transmission to the tens of shillings wheel of the totalizer are arranged to allow either 0 or 1 step to the actuator 652. When (as in the present example) the plate 609 moves through 6 steps, representing 50/-, 2 units, representing ú2, are transferred to the units of pounds plate 612 by steps 657, arm 686, sleeve 687, arm 692, slide 688, pin 693 and slot, 692a. The actuators 649 .. 651 are released to take their settings from the plates 601, 603, 606, &c., when a bail 709, Fig; 1, is lowered by levers 710, 713 and links 712 actuated by a cam on the main shaft. The collecting plates are restored by a bail 705 carried by arms 707 controlled by a cam 708. Control of totalizer in multiplication. The totalizer wheels 716, Fig. 7, are engaged with the actuators, during the return of the latter, by the endwise displacement of the totalizer shaft 717 by a cam on a rod 719. During the initial (anticlockwise) motion of the operating shaft 232 a cam 720 causes a link 728 to swing idly. During the return (clockwise) movement the link 728 is held by a projection 726a on a lever 726 and this lever is thus rocked clockwise to lower the rod 719. Total taking. The lower end of the rod 719 is formed by two pivoted members 722, 723. Normally the member 722 is in active position with respect to the arm 726, but when the total key is depressed, the relative position of the arms is changed and the member 723 comes into active position beneath another arm similar to the arm 726 but rocked by another cam on the shaft 232 during the initial (anticlockwise) rocking of this shaft. The totalizer pinions are thus engaged with the actuators 649 .. 653 during the first part of the cycle, the actuators then being released by the bail 709, Fig. 1, and descending distances corresponding to the amounts standing on the totalizer. These movements of the actuators are used to set printing or punching mechanism. The actuators are free to descend because the slots 660a in the plates 601 &c. are at this time beneath the projections 649a.