Device for measuring thread minor diameter

Details Device for measuring thread minor diameter Device for measuring thread minor diameter

1989-10-26

1990-09-11

Cuchlinski, Jr., William A.

Geometrical instruments

Gauge

Screw thread

33829, G01B 340

Patent

active

049551400

ABSTRACT:
A device is shown for measuring the minor diameter of a screw thread. The device includes a frame and an adjustable indicator blade which moves in a vertical plane for engaging a thread root of a screw arranged on the frame transverse to the adjustable blade. A pair of laterally moveable blades are mounted on the frame oppositely to the adjustable blade for holding a screw therebetween. Each of the laterally moveable blades has a blade point which engages a thread root of the screw at spaced locations along the longitudinal axis of the screw. An indicator is provided for determining the relative distance between the adjustable blade and the blade points of the laterally moveable blades when a screw is held therebetween.

REFERENCES:
patent: 734784 (1903-07-01), Wells
patent: 1074552 (1913-09-01), Kline
patent: 1174052 (1916-03-01), Burdick
patent: 2624125 (1953-01-01), Johnson
patent: 2826822 (1958-03-01), Noviant
patent: 2849797 (1958-09-01), Etchell
patent: 2911725 (1959-11-01), Sleigh
patent: 4211013 (1980-07-01), Bresson et al.
patent: 4524524 (1985-06-01), Frank et al.
patent: 4745685 (1988-05-01), Castillo
patent: 4821422 (1989-04-01), Porter

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