Record grooving device

Details Record grooving device Record grooving device

1975-06-04

1976-08-10

Simpson, Othell M.

Geometrical instruments

Scriber

Curved line

83 5, 274 1R, 274 42R, B26D 306, G11B 100, B43L 1106

Patent

active

039733254

ABSTRACT:
A grooving device for making a groove between selected recording bands of a long playing record for selective playing thereof. A platen for supporting a record to be so altered. A spindle upstanding from the platen for placing a record centered on said spindle and platen, a radially extending arm removably mounted on the spindle for rotation relative to the record. The arm is formed to house a gear and a longitudinally movable rack bar engaging said gear. The distal end of the rack bar carrying a groove cutting blade. In mounting the radial arm onto the spindle and platen, the gear is keyed to the spindle so that upon rotating the arm over the record, the stationary spindle will cause the rack bar to move radially relative to the record causing the blade at the end thereof to cut a convolutely curved groove between one select band to another select band on the record.

REFERENCES:
patent: 157841 (1874-12-01), King
patent: 1195101 (1916-08-01), Schiffman
patent: 1761212 (1930-06-01), Knopp
patent: 2262732 (1941-11-01), Gruber
patent: 2595795 (1952-05-01), Kovach
patent: 3125344 (1964-03-01), Immendorf

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