Automatic control for phonographs playing records of different s

Details Automatic control for phonographs playing records of different s Automatic control for phonographs playing records of different s

1976-08-13

1977-12-13

Aegerter, Richard E.

Undertaking

274 10S, G11B 1926

Patent

active

040625478

ABSTRACT:
An automatic means is provided for setting a phonograph record player to the proper speed, depending on the type of record placed thereon. A magnet detection circuit is employed in the player and a magnetic adapter is employed for 45 RPM records.

REFERENCES:
patent: 2632650 (1953-03-01), Offutt
patent: 2718399 (1955-09-01), Martin et al.
patent: 2806704 (1957-09-01), Burdett
patent: 2885208 (1959-05-01), Pranter
patent: 3547449 (1970-12-01), Dennis

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