Patent GB-362920-A (GB)
Title: Improvements in control mechanism for coin-operated phonograph-radio combination
IPC: G07F17/28
Filed: 1930-05-28
Abstract: 362,920. Coin-freed radio gramophone combinations. DEHN, F. B., 103, Kingsway, London.-(Mills Novelty Co. ; 4100, Fullerton Avenue, Chicago, U.S.A.) May 28, 1930, No. 16507. [Class 27.] A combined automatic phonograph and radio receiver is provided with coin-controlled circuitbreaking devices for starting and interrupting the operation of the phonograph and receiver respectively, and automatically operating control mechanism for determining the period of radio reception in accordance with the number of coins inserted, this control mechanism including means for suspending the operation of the phonograph during the period of radio reception. A radio cut-out switch, controlled by movement of the phonograph mechanism, suspends the operation of the radio receiver during the interval of play of a record. The automatic phonograph is described in Specification 355,744 and 357,997, [both in Group XXXVIII], and the coin-controlled circuit-breaking device in Specification 354,442. The timing device for the radio receiver comprises an electric motor 28, Fig. 2, which is started by the insertion of a coin in the receiver circuit-breaking device and which drives a disc 43 through one revolution in twenty minutes. The disc 43 carries a number of adjustable tabs 44 which actuate periodically, a switch 45 for stopping the reception, the tabs being spring-controlled fingers which can be moved into the plane of the disc. The switch 45 consists of a pivoted spring- controlled arm 52 carrying a roller which is engaged by the tabs 44 to move the arm so that the contact 57 of a combined contact piece 57 and insulation piece 58, pivoted on the end of the arm, engages momentarily a contact pin 55 and then an insulation pin 56. When the contacts 55, 57 are closed, the coin-controlled circuit-breaking device is actuated. During the return of the arm 52 to normal position against a stop 62, the contact 57 does not engage the pin 55 since the pieces 57, 58 are in staggered relationship. While the arm 52 is away from the stop 62, a switch 65, 66 in the circuit of a signal lamp is closed to give warning of the end of the period of reception. When the motor 28 is running, a balanced wheel governor 68 carried by its shaft 32 is straightened and an insulated pin 72 is moved thereby to open a switch 69 in the main circuit controlling the phonograph so that this cannot be operated during a period of radio reception. During the playing of a record, a radio cut-out switch 115, Fig. 12, is opened to suspend operation of the receiver, by a roller 138 on an arm of the switch being engaged by the tiltable driving motor 139, when this is in driving engagement with the record support as described in Specification 355,744. If, when several coins have been inserted in the phonograph and all the records corresponding thereto are not finished, in the meantime a coin is inserted in the radio, the radio will be given preference, the playing of the phonograph being suspended by the opening of switch 69. When the radio is finished, the remaining records will be played. The radio and phonograph may be in separate cabinets each provided with a speaker and a coin slot. The coin slots may be in remote wall boxes and a single speaker may be employed for the phonograph-radio combination mounted in a single cabinet. A double throw-switch for shifting the speaker from the phonograph to the radio and vice versa comprises a pair of contact fingers 91, 92, Fig. 6, engaging either a pair of radio contacts 86, 87 or phonograph contacts 88, 89 on a ptate 83 and carried by a slide 95 which is mounted on the plate 83 and is urged by a spring 102 towards the cam ring 26 forming part of the record carrier assembly. When the phonograph is in playing position, a roller 100 on the slide 95 engages one of the cam grooves 27 in the ring 26 and the speaker is connected by conductors 105, 106, the fingers 91, 92 and the contacts 88, 89 to the phonograph. When the phonograph is not playing, the cam ring 26 moves the slide 95 to bring the fingers 91, 92 into engagement with the contacts 86, 87 leading to the radio.