Hard metal cutting bit

Details Hard metal cutting bit Hard metal cutting bit

1975-12-16

1976-07-13

Hinson, Harrison L.

Metal working

Upholstered article making

Tufting

B26D 100

Patent

active

039685500

ABSTRACT:
A hard metal cutting bit is useful both for rough cutting and for finishing, and comprises a polygonal member having parallel opposite main faces, and on at least one of the main faces a fillet that extends continuously about the edge of the main face, the fillet being concave and of greatest depth and width mid-way between the corners of the bit and of the least width and depth at the corners of the bit. A first chip breaker on the main face is next to the fillet and is of least width and depth mid-way between the corners and greatest depth and width adjacent the corners of the bit. A second chip breaker is next to the first and spaced by the first chip breaker from the fillet, and is discontinuous and concave and of greatest depth and width mid-way between the corners and terminates adjacent the corners.

REFERENCES:
patent: 3381349 (1968-05-01), Newcomer
patent: 3383748 (1968-05-01), Galimberti et al.
patent: 3399442 (1968-09-01), Jones et al.
patent: 3786541 (1974-01-01), Lundgren
patent: 3885281 (1975-05-01), Stambler

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