Patent GB-357997-A (GB)
Title: Improvements in record selector mechanism for automatic gramophones
IPC: G11B17/24
Filed: 1930-05-28
Abstract: 357,997. Gramophones. DEHN, F. B., 103, Kingsway, London.-(Mills Novelty Co. ; 4100, Fullerton Avenue, Chicago, U.S.A.) May 28, 1930, No. 16504. [Class 40 (ii).] An automatic gramophone having a rotary multiple record carrier for bringing the records into playing position is provided with selector mechanism whereby any desired record, according to the setting of the selector, can be brought into playing position, after which in the absence of a further setting the machine continues to play the records in the normal sequence. The machine may be controlled by a coin or coins adapted to complete the circuit to the driving motors. The records 18, Fig. 1, are supported on discs 17 carried by spindles mounted to rotate in arms 10 radiating from a supporting shaft 12 which can be driven by a chain 22 from an electric motor 20 to bring a record into playing position. As this movement approaches completion, a recess 48 in a cam 37 fixed to the record carrier arms 10 permits a pivoted lever 40 to rock, thereby opening a switch 51 in the circuit to the motor 20, allowing a pivotally mounted and constantly driven electric motor 24 to rock so that a friction pinion 25 is in driving engagement with the positioned record plate 17, and permitting rocking of a pivoted arm 28 carrying the pivoted arm 31 supporting the pick-up 32 so that this is lowered on to the record. When the pick-up reaches the end of the record it completes a circuit at 49, Fig. 6, to the motor 20 to drive the carrier, the cam 37 on which acts immediately to rock the lever 40 so that the pick-up arm is lifted and the record driving motor 24 rocked out of driving engagement, the circuit to the motor 20 being now maintained by closure of the switch 50 due to the movement of the lever 40. If no selection has been made, successive records are brought into playing position and played so long as the coin or coins complete the main circuit at 108. Selection can be effected by means of a dial 66, Fig. 2, on a shaft 62 aligned with the record carrier shaft 12 and carrying an insulated conducting ring 61 arranged opposite to a fixed insulated conducting ring 70. The rings are normally electrically connected by plungers 73, 74 on a switch arm 59 on the carrier shaft 12, and the records are played in succession. By adjustment of the dial to a position for selecting a record to be played an insulating strip 80 on the ring 61 is suitably positioned. The plunger 74 is stepped round in the operation of the machine until it contacts the insulating strip 80 whereby the circuit of an electromagnet 54, Fig. 6, is broken and the armature 55 is released and allows a pivot 52 to disengage the lever 40 so that the machine can operate to play the selected record. The dial 66 is numbered to correspond with the records, and when any desired number is brought opposite a fixed mark 85, Fig. 1, by means of a milled knob 81 turning the dial through friction and ratchet mechanism 82, 83, 84, the ring 61 which is turned with the dial is positioned. Specifications 355,744, 357,998, and 360,110 are referred to.