Phonograph turntable electro-thermal cueing control

Details Phonograph turntable electro-thermal cueing control Phonograph turntable electro-thermal cueing control

1977-07-28

1978-12-12

Aegerter, Richard E.

Undertaking

G11B 310

Patent

active

041293053

ABSTRACT:
A cueing control is provided for a phonograph turntable of the type including a frame, a record supporting disc affixed to the frame and mounted for rotation about a central axis, and a tone arm having a cartridge assembly affixed to one end thereof. The cueing control comprises a post mounted to the frame for vertical movement and having a cradle affixed to its top end designed to underlie portions of the tone arm. The bottom end of the post is engaged by one end of a bimetallic element which, in turn, is cantilevered to the frame. A heater is positioned adjacent to the bimetallic element so that the element can be heated and caused to deflect to thereby shift the post vertically.

REFERENCES:
patent: 2487154 (1949-11-01), Lloyd
patent: 2572162 (1951-10-01), Koonz
patent: 2743574 (1956-05-01), McCorkle
patent: 3727922 (1973-04-01), Igata
patent: 3814441 (1974-06-01), Craggs
patent: 3884481 (1975-05-01), Eisemann
patent: 3926440 (1975-12-01), Wren

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