Phonograph having an improved tone arm assembly

Details Phonograph having an improved tone arm assembly Phonograph having an improved tone arm assembly

1980-01-18

1981-12-01

Shepperd, John W.

Dynamic information storage or retrieval

With particular cabinet structure

369225, 369244, 369253, 369 78, G11B 314, G11B 320, G11B 1706

Patent

active

043039995

ABSTRACT:
The object of this invention is to provide an improved phonograph having an improved tone arm assembly and structure associated therewith for automatically returning the tone arm to its rest position when the phonograph cover is closed.
The improved tone arm is mounted in a slightly unbalanced condition for movement under the influence of gravity to a normal position. In this normal position the up and down motion of the needle on the record and the force exerted thereagainst is independent of the tone arm.

REFERENCES:
patent: 2060117 (1936-11-01), Proctor
patent: 2973207 (1961-02-01), Van Antwerp
patent: 3044783 (1962-07-01), Doncaster
patent: 3281154 (1966-10-01), Schmetter
patent: 3328036 (1967-06-01), Reed et al.
patent: 3408080 (1968-10-01), Dimitracopoulos
patent: 3529834 (1970-09-01), Renoux

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