Patent GB-518679-A (GB)
Title: Improvements relating to automatic change-giving machines
IPC: G07F5/24
Filed: 1938-08-30
Abstract: 518,679. Coin-freed and change-giving apparatus. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and ROBINSON, M. H. Aug. 30, 1938, No. 25400. [Class 27] Relates to a machine for delivering change for a coin, either to the full value of the coin inserted or to some smaller value, together with a ticket or other article corresponding to the difference between the value of the inserted coin and the change given. According to the invention the insertion of the coin is arranged to effect automatically the withdrawal of the proper number of coins of one or more denominations from their corresponding storage receptacles so as to make up the change with a preferred or normal composition of coins, this withdrawal being effected under the control of a device for each of the receptacle for the kind or kinds or coins involved and arranged to be rendered operative only by the pressure of a predetermined number of coins in the receptacles, this device when rendered inoperative preventing the operation of the withdrawal mechanism for this coin receptacle, and causing the operation of the corresponding mechanism for withdrawing coins from the other receptacle or receptacles so as to make up the required change with a different composition of coins. The invention may be applied to a machine of the kind described in Specification 511,285, in which the delivery of change with or without the delivery of a ticket is arranged to be effected by an electrically-operated stepping selector, and the ejection of the change may be effected by a conveyer mechanism as described in Specification 513,785. The invention is shown applied to a machine adapted to sell threepenny tickets and give the required change, if any, upon the insertion of either the proper amount in pennies or halfpennies, or both, or a threepenny piece, a sixpenny piece, or a shilling piece. In the drawings the stepping selector comprises a series of contact arms I ... VI, arms IV and V not being shown, rigidly connected together and working over fixed contact banks 1... 25, the arms always being either at 12 or 25 at the beginning of the operations. Arms IV and V control an indicator for indicating the progressive operation of the selector device through its successive steps. The arms are moved stepby-step by successive energizations of a magnet PSM, Fig. 1. Storage or detector contacts (not shown) are provided in the storage containers for sixpenny and threepenny pieces and are arranged to operate relays 6SR, 3SR only some of the contacts of which are shown in the drawings. A similar contact is also provided in the penny reservoir. The insertion of a threepenny, sixpenny or shilling piece closes contacts 3C, 6C, or SC, Fig. 4, to energize insertion relays 3CR, 6CR or SCR respectively. If sixpenny and threepenny pieces are available for change the storage relays 6SR, 3SR will be energized. If a shilling is inserted the shilling insertion relay SCR will be temporarily energized but the threepenny and sixpenny relays 3CR, 6CR will remain de-energized throughout the operation. When the relay SCR has been temporarily energized through the circuit B-SC-SCR-C a holding circuit is established - through contacts 1... 10 on selection bank VI, and contact SCR1 of relay SCR. The magnet PSM is now energized through contact SCR5 of relay SCR, contact 25 on bank I, and interrupter device IC so that the selector arms are moved one step to contact 1 breaking the contact at 25. A fresh circuit is now established for the magnet PSM through contact 3SR4 of the threepenny storage relay 3SR and contacts 1 and 2 of bank I, so that the selector is moved through two steps to contact 3, this circuit being then broken. A circuit has thus been established to deliver a threepenny piece through terminal B, contact'3 of bank II, back contact 3CR7 of relay 3CR, front contact 3SR5 of the threepenny storage relay 3SR, and threepenny delivery device 3D to terminal C. A threepenny piece is delivered and completes a new circuit for the magnet PSM through a delivery contact 3DC, Fig. 1, so that the selector moves to contact 4. A circuit for the magnet PSM is now made through front contact 3SR3 of relay 3SR and contacts 4 and .5 on .bank I, so that the selector is moved 'to contacts 5 and 6, this circuit being interrupted at 6. With the selector at 6 a sixpenny piece is delivered by the sixpenny delivery device 6D, the circuit for this device being through contact 6 on bank II, front contact SCR3 of relay SCR, front contact 6SR5 of relay 6SR, and 6D. The delivery of sixpence closes a contact 6DC, Fig. 1, to re-energize. the magnet PSM and move the selector to contact 7. A fresh circuit for the magnet is now made through front contact 6SR2 of relay 6SR, and contacts 7 and 8 on bank I, so that the selector moves to contacts 8 and 9. At contact 9 the magnet is energized through front contact 6SR3 of 6SR and the selector moves to contact 10 to deliver a ticket in any known manner. The issue of the ticket is checked by a ticket proving relay TPR (not shown), the front contact TPR3 of which is connected to contact 10 so that the magnet PSM is energized and moves the selector to contact 11. The front contact DR7 of a detector relay DR (not shown), which is de-energized when a buckled or otherwise faulty ticket is issued, closes a circuit for the magnet PSM through, contact 11 so that the selector moves to contact 12 in readiness for a new series of operations the magnet circuit being again broken until a fresh coin is inserted to energize one of the coin relays 3CR, 6CR, SCR, the holding circuit for the relay SCR having been broken at contact 11. If threepenny pieces are available but no sixpenny pieces the operation proceeds as before, until the selector is at contact 6, a threepenny piece having been delivered at contact 3. As the relay 6SR is de-energized a sixpenny piece is not delivered at contact 6, but the threepenny relay 3D is energized instead to deliver a threepenny piece. Similarly another threepenny piece is delivered at contact 9 and the ticket at contact 10, the selector moving on to contacts 11 and 12 as before. If pennies only are available for change the threepenny and sixpenny storage relays 3SR and 6SR are both de-energized, but the penny delivery device PD is energized at each of contacts 1 to 9, the ticket being delivered at contact 10. If sixpenny pieces and pennies are available but no threepenny pieces three pennies are delivered. at contacts 1, 2 and 3, a sixpenny piece at contact 6 and the ticket at 10. Arrangements are made to prevent the energization of the delivery devices PD, 3D, 6D while the magnet is energized through the interrupter device IC. Manually-adjustable control arrangements may be provided in connection with the coin storage relays in order that the change delivered by the machine may be made-up as desired.