Hole cutting apparatus

Details Hole cutting apparatus Hole cutting apparatus

1975-10-28

1977-03-08

Smith, Al Lawrence

Cutlery

Cutting tools

Push and/or pull type

301131, B26B 300

Patent

active

040105431

ABSTRACT:
A hole cutting apparatus which can be utilized to make holes in material which is of a tacky nature, including a hollow tube whose bottom edge is both chamfered and also cut at an angle with respect to the longitudinal axis of the tube. A knob is coupled to the top of the tube to form a handle. A hole in the top of the knob prevents a vacuum from being formed in the tube and also permits easy removal of the portion cut.

REFERENCES:
patent: 158420 (1875-01-01), Knapp
patent: 185902 (1877-01-01), Fallows
patent: 511803 (1894-01-01), Scales
patent: 1270040 (1918-06-01), Miller
patent: 1277308 (1918-08-01), Gunturiz
patent: 1774551 (1930-09-01), Hackett
patent: 2402558 (1946-06-01), La Berge
patent: 2708312 (1955-05-01), Hauser
patent: 2990615 (1961-07-01), Ohler
patent: 3335473 (1967-08-01), Gentoso
patent: 3639981 (1972-02-01), Nowensky

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