Metal working – Upholstered article making – Tufting
Patent
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
Hinson Harrison L.
Stellram SA
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