Patent GB-1167755-A (GB)
Title: Automatic Record Player Apparatus
Inventor: KITAZAWA RYOZO
IPC: G11B17/24
Filed: 1966-12-08
Abstract: 1,167,755. Automatic player for selected records. NIPPON COLUMBIA K.K. 8 Dec., 1966 [8 Dec., 1965; 29 Dec., 1965; 14 July, 1966 (2)], No. 55028/66. Heading G5R. In an arrangement for automatically playing selected gramophone records, each record is provided with its own turntable and is moved to the playing position in response to a selection process. The records 4 are mounted, with their turntables 7, for rotation in a vertical plane on pillars 6 which are disposed at equal intervals on the periphery of a rotatable circular support member 3. The records are secured to the turntables by a pair of locking members 202 which slide in diametrically opposite grooves 207 on the turntable and are urged outwardly to secure the record against the turntable by a circular spring 205. The diameter of the turntables, which during playback are engaged on their periphery by a constant speed drive, is a function of the speed of their associated records. The record selection apparatus includes discshaped members 9, 10 and an intermediate member 24 which are connected by insulated pillars 28 and 29. Memory elements 11 extend between apertures 21 in plate 10 and 20 in plate 9 and consist of elongated plates 13 of magnetic material to which conductive members 17 are riveted. Springs 23 hold the upper portions of the elements 11 in an inner or an outer position in the apertures 20 of plate 9. Coils 26 are mounted on arms 25 extending outwardly from the intermediate disc member 24, one coil being associated with each memory element. When a record is selected by depressing a pair of buttons (not shown) the appropriate coil is energized and draws the associated memory element inwards until a bent-over portion 17<SP>1</SP> of the conductive member engages the end of the coil leg and the upper part of the element is held in the inner position in its aperture 20. In this position the element completes a circuit between disc 9 and disc 24. This energizes a motor 50 which drives the support member 3 about its support shaft until an engaging member 37 or 37<SP>1</SP> disposed below the support member engages the upper portion of the memory element and moves it outwardly to its initial position. This opens the circuit to the drive motor when the selected record is in the play position. Each of the engaging members includes an electrical contact portion which as the member engages the memory element completes a series of circuits. The first of these circuits energizes the motor drive to spindle 415 and the second acts via cam 431 to tilt the arm 418 to bring drive member 424 into contact with the spindle 415 and the belt drive 423 into contact with the rim of the turntable 7. A pair of pick-ups are provided, one for each side of a record, and mounted one on each arm 504a, 504b of the pick-up member 503. This member is pivotable in two directions about the pin 507 and about the shafts 512a and 512b. Another of the circuits energizes electromagnets 516a, 516b to pivot a third electromagnet 515 whereby via springs 517a, 517b the pick-up arm is moved to bring a stylus into contact with the required side of the record.