Punch

Details Punch Punch

1976-01-21

1978-05-09

Jones, Jr., James L.

Cutlery

Perforating or indenting implements

Pointed

B26F 100

Patent

active

040879127

ABSTRACT:
An elongated steel punch having a body section wherein one end is pointed and between the point and the body, a series of step portions are provided whereby a single tool can be used to pierce a work material in a manner to form holes of different diameters depending solely on the depth of penetration of the tool.

REFERENCES:
patent: 295227 (1884-03-01), Briggs et al.
patent: 770238 (1904-09-01), Lovejoy
patent: 1092274 (1914-04-01), Lindstedt et al.
patent: 2161969 (1939-06-01), Mange
patent: 2675079 (1954-04-01), Hughes
patent: 3010207 (1961-11-01), Barnes

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