Automatic phonographs

Details Automatic phonographs Automatic phonographs

1973-02-14

1976-11-23

Haroian, Harry N.

Undertaking

248 20, 274 23A, 274 39A, G11B 336, G11B 1700

Patent

active

039933156

ABSTRACT:
An automatic phonograph comprising a carrier chassis for a turn table and a pick-up arm, said carrier chassis being supported resiliently by a main chassis, a turn table driving motor, means for moving the tone arm horizontally from an outer inoperative position of rest to a position above the inlet of the sound groove of a record placed on the turn table, means for lowering and raising the tone arm to and from engagement with the record, means for selecting or detecting the tone arm position in which the tone arm is lowerable into engagement with the inlet sound groove of the record, according to the size of the record, stop means responsive to the tone arm reaching an inner position in which it has finished playing of the record and operable to cause the tone arm to be raised and moved outwardly to its inoperative position and to cause the driving motor to be switched off and switch means for energizing the driving motor and the tone arm moving means, the driving means for moving the tone arm both horizontally and vertically being controlled by switch means actuated in response to selection and/or detection of the appropriate conditions for the said tone arm moving means to be actuated, all in such a manner that there is no mechanical driving connection between the turn table and the tone arm moving means and that at least the major manual controls are constituted by switch means located on the main chassis and being without mechanical operational connection with the operation performing means on the carrier chassis.

REFERENCES:
patent: 242980 (1881-06-01), Richter
patent: 2580815 (1952-01-01), Mooney
patent: 3059882 (1962-10-01), Staar
patent: 3284085 (1966-11-01), Zimmerman
patent: 3510137 (1970-05-01), Freier
patent: 3578340 (1971-05-01), Fortune
patent: 3592477 (1971-07-01), Winn
patent: 3599988 (1971-08-01), Norris
patent: 3622163 (1971-11-01), Bachman
patent: 3661397 (1972-05-01), Worth

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