Geometrical instruments – Area integrators – Electrical
Patent
1980-01-09
1982-03-16
Little, Willis
Geometrical instruments
Area integrators
Electrical
33172D, 33DIG1, G01B 525
Patent
active
043194001
ABSTRACT:
A centering device comprising a centering pointer and a centering block to be used in conjunction with a conventional dial indicator for locating the center of a workpiece and aligning the center of the workpiece with the center axis of the spindle of a manufacturing machine without the need of marking the workpiece prior to the set up of the workpiece for the cutting process. The centering pointer comprises a needle resiliently and slidably held in a hollow holder for mounting onto the spindle of a manufacturing machine such as a drill press and the like, the needle having a lever rigidly connected thereto for transmitting the movement to the lower point of the dial indicator. The centering block is formed of a cylindrical block with a L shaped cutaway at an angle of 90 degrees along the axis with one surface thereof passing through the center axis of the cylindrical block for mounting onto an edge of the workpiece for aligning the edge of the workpiece with the center axis of the spindle of the manufacturing machine.
REFERENCES:
patent: 1414483 (1922-05-01), Novitzky
patent: 2286088 (1942-06-01), Harrell
patent: 2484801 (1949-10-01), Anderson
patent: 2506236 (1950-05-01), Overwyer, Jr.
patent: 2572999 (1951-10-01), Elliott
patent: 2674807 (1954-04-01), Russa
patent: 2734277 (1956-02-01), Dixon et al.
patent: 3075294 (1963-01-01), Strecker
patent: 3120062 (1964-02-01), Butala
patent: 3785057 (1974-01-01), Streander
patent: 3826011 (1974-07-01), D'Aniello
Little Willis
Sung Tak Ki
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