Patent GB-770136-A (GB)
Title: Coin dispensing device for use with a cash register
IPC: G06C27/00
Filed: 1955-06-08
Abstract: 770,136. Cash registers. NATIONAL CASH REGISTER CO. June 8, 1955 [July 12, 1954], No. 16418/55. Class 106 (1). [Also in Group XVIII] A cash register, adapted also to dispense change, comprises an add/subtract totalizer for adding the items of a multiple-item transaction, receiving the tendered amount and computing the change, which is automatically ejected during a concluding total-taking operation on the totalizer. The invention is applied to a Shipley type cash register, e.g. as described in Specification 486,438, having amount keys 284 (Fig. 1), differential actuators 530, item indicators 545, a multiple-item balance totalizer 533 and mechanism (not shown) for printing items and their totals on an issued voucher. The invention provides an " amount tendered " key in the transaction key bank and change delivering mechanism, which is either incorporated in the cash register or, as shown, constructed as a separate unit (Fig. 17) electrically connected to selector switches associated with the indicator adjusting sectors 523 of the register. In operation, the purchase items are entered and a sub-total taken ; the tendered amount is then entered by operating the " amount tendered key, which selects the minus side of the balance totalizer, after which the balance totalizer is cleared in a total-taking operation. The negative condition of the balance totalizer after entry of the amount tendered conditions the change delivery mechanism for operation, so that change coins equal in value to the total cleared from the balance totalizer are delivered during the total-taking operation. Entering tendered amount. The " amount tendered " key is locked against depression, by mechanism similar to that described in Specification 747,470, until one or more positive items have been entered and a sub-total taken. Depression of the key cams a stop pawl into position to arrest the transaction differential in its zero position and a cam 648 (Fig. 8) on a sleeve 524 connected with the differential then positions the balance totalizer frame 535 to register the subtract wheels with the amount actuators. Total-taking and change delivery. Adjustment of the total lever 287, Fig. 8, to a totaltaking position moves a pin 662 opposite one or other of two notches 665, 666 in a lever 660, whereupon a spring 663 rocks the lever counterclockwise until a stud 746 thereon abuts a pivoted stop 748. A sector 657 rockable about the shaft 593 has an arm 655 connected with a stud 656 on the transaction differential, so that the sector rocks clockwise with the transaction differential during the ensuing cycle. With the stud 746 abutting the stop 748, a nose 659 on the lever 660 is positioned to engage a step 658 in the sector 657 and this arrests the transaction differential in its fourth position, which is the normal position for positive total-taking. In the total-taking operation following entry of a tendered amount, however, clockwise movement of the usual overdraft shaft 692 associated with the balance totalizer rocks the stop 748 clear of the stud 746 so that the lever 660 rocks inwardly further and engages a second step 743 in the sector 657, which arrests the transaction differential in its second position. In this position, the negative side of the balance totalizer is selected for total-taking and contacts 19, 20 (Fig. 15), are bridged by a roller 28 associated with the transaction differential to complete change delivery circuits. Closure of three further main contacts 956,957 and 958 is necessary before change can be delivered. Contacts 956 and 957 are both closed at the appropriate moment in the machine cycle, i.e. after the amount differentials have become adjusted to the totalizer, by means of a crank, on the main shaft. Contacts 958 (see also Fig. 8), are closed by adjustment of the total lever 287 to the total-taking position, the lever lowering a link 960 and rocking an arm 959 clockwise. A cam slot 968 in the arm 959 rocks a lever 965 on a stud 966 also clockwise and the lever 965 rocks a lever 963 counterclockwise to close the contacts 958 and prepare the change delivery main circuit. Change selection and ejecting mechanism. Change coins are stored in demoninational columns of a compartmented coin tray. 929, Fig. 17, at the front of the separate changedelivery unit, there being an ejector solenoid A-H (see also Fig. 15), associated with each column, the armature of which is connected through a bell-crank 914 and link 917 with a slide 918 mounted on rollers 919, 920. Pivoted at 926 to each slide 918 is a coin-ejecting finger 927 adapted to eject the lowermost or, as regards certain columns, the two lowermost coins upon energization of the relevant solenoid. A second finger 931 pivoted at 930 to each finger 927 bears against a fixed plate 932 and maintains the ejector finger 927 at the correct height by means of an intervening spring 937 and adjusting screw 935. Selective energization of the solenoids is under the control of selector switches shown in the lower part of Fig. 15 and associated with the cents and dimes amount differentials of the cash register. As regards the cents differential, a pair of spring- actuated arms 872, 873 are pivotally mounted on the cents indicater adjusting sector 523, Figs. 1 and 2, each arm bearing a contact roller 14, 62 adapted to bridge a rail 23, 63 with a set of ten contacts 154, 150 according to the set position of the cents differential. The selector switch associated with the dimes differential comprises an identical arrangement of contact rollers 61, 120, rails 69, 119 and contact sets 132, 152. The similar contact mechanism shown at the right of Figs. 2 and 15 is that associated with the transaction differential for bridging the contacts 19, 20 when in its second position as referred to above. The four selector switches control the solenoids A-H in most instances by selective energization of a series of relays I-VII having contacts suitably interconnected with the solenoids. For example, with the dimes differential in its " 3 " position, a circuit is closed from 18 to line 22, rail 69 to contact 102, line 100, relay VI, line 43 and main contacts 956, 958 to 13. Relay VI closes its contacts g to complete a circuit from 18, contacts 19-20, line 42, contacts g, line 103, solenoid G and line 27 to line 13. Relay VI also closes its contacts d2 to complete a similar circuit, through normally closed contacts d<SP>1</SP> of relay III, to solenoid D. Energization of the solenoids G and D results in ejection of a five-cent coin and a twenty-five cent coin. A feeler 946, Fig. 17, is adapted to bear against a lower part of each column of coins by pressure of a spring actuated lever 948. When a column becomes deflected, its feeler rocks inwardly, and a roller 951 on the corresponding lever strikes an arm 952 on a shaft 953, rocking the shaft clockwise to separate contacts 955 in the energization circuit of the solenoids, so that no further coins can be ejected.