Pick-up arm positioning mechanism for an automatic record player

Details Pick-up arm positioning mechanism for an automatic record player Pick-up arm positioning mechanism for an automatic record player

1976-05-10

1978-05-02

Aegerter, Richard E.

Undertaking

274 15R, G11B 1708

Patent

active

040870960

ABSTRACT:
A pick-up arm guiding mechanism for an automatic record player having a command disc with pin-guiding concentric grooves for a sensor pin which is connected to the pick-up arm, each groove corresponding to a specific record size, the pin being directed into the desired groove by a mechanical catching means. During the rotation of the command disc in a changing cycle the pin engages a diversion groove which directs the pin toward the disc center, and the pin is forced out of the groove when the inward movement is blocked by a stop disposed such that the pin engages with the selected pin-guiding groove.

REFERENCES:
patent: 2488137 (1949-11-01), Morrison
patent: 2681227 (1954-06-01), Fisher
patent: 3010724 (1961-11-01), Hansen
patent: 3304092 (1967-02-01), Faulkner
patent: 3433486 (1969-03-01), Kawaharazaki

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