Automatic record player mechanism for turntable speed and pick-u

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Details

274 15R, 274 23R, G11B 1706, G11B 2504

Patent

active

040822907

ABSTRACT:
Mechanism for an automatic record player or record changer for combined adjustment of the turntable speed and the lowering position of the pick-up arm, the lowering position of the pick-up arm being established by engagement with a lever step of a two-armed pivotable shift lever, which step has been selected by a record diameter sensing means. The free end of a single arm dead-center lever engages the shift lever at one of two possible speed settings. During pivoting of the shift lever to bring a lever step for a different dropping diameter (17 cm) into the path of the pick-up arm, the free end is pivoted beyond dead center by said lever and is swung against the switch by an over-center spring to change the speed.

REFERENCES:
patent: 2366858 (1945-01-01), Knox et al.
patent: 2563653 (1951-08-01), Lingenbrink
patent: 2896953 (1959-07-01), DaCosta et al.
patent: 3485499 (1969-12-01), Fukuda
patent: 3827697 (1974-08-01), Miyoshi

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