Bit for electric drills

Details Bit for electric drills Bit for electric drills

1978-04-04

1979-03-20

Hinson, Harrison L.

Cutters, for shaping

Rotary cutting tool

Face or end mill

144219, 144240, B26D 112, B27G 1300

Patent

active

041451597

ABSTRACT:
The present invention relates to an improved drill bit. In the present invention there are disposed opposite each other on a shank a cutting blade with no relief and a post. The post prevents a center swing and is of a small diameter equivalent to a cutting-in amount reduced.

REFERENCES:
patent: 271646 (1883-02-01), Martignoni
patent: 476817 (1892-06-01), Pratt
patent: 693508 (1902-02-01), Fette
patent: 1063995 (1913-06-01), Mintz
patent: 1316959 (1919-09-01), Keiser
patent: 2202251 (1940-05-01), Gille

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