Record player needle control mechanism

Details Record player needle control mechanism Record player needle control mechanism

1974-10-21

1976-04-13

Haroian, Harry N.

Undertaking

G11B 310

Patent

active

039499952

ABSTRACT:
In accordance with the present invention two independent controls of the application of the pickup needle to the groove are provided. The first control involves means to overcome the tendency of the needle to skate up and sidewise out of the groove, and the second involves an adjustment of the downward pressure on the needle to keep it fully in contact with the walls of the groove. Two independent influences are required--the first acting generally parallel to or diagonally downward to the plane of the record groove and the second requires an influence acting mainly normal to the plane of the record groove. The two tendencies arise from causes which are independent of each other, and for best reproduction they require independent corrective measures accordingly. Conveniently operable independent controls for each of the above requirements, respectively, are provided in a convenient location on the player, according to the present invention.

REFERENCES:
patent: 2551506 (1951-05-01), Rockwell
patent: 2776144 (1957-01-01), Nichols

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