Apparatus for making holes in thick stacks of paper

Details Apparatus for making holes in thick stacks of paper Apparatus for making holes in thick stacks of paper

1983-04-29

1985-04-09

Yost, Frank T.

Cutting

With product handling means

Means to move, guide, or permit free fall or flight of product

83682, 83685, B26F 114

Patent

active

045093962

ABSTRACT:
A tool for punching relatively thick paper stacks, comprises a cylindrical, hollow punch with a cutting edge on its front outer edge. Processing takes place in the manner of a punching operation against a bearing surface, which has a hole corresponding to tool with a counterpunch arranged centrally therein. A blade is arranged in the resulting annular gap in order to separate punching waste which has been pressed into said annular gap and in order to permit the removal thereof.

REFERENCES:
patent: 247465 (1881-09-01), Long
patent: 384532 (1888-06-01), Knowlton
patent: 2170473 (1939-08-01), Fitch
patent: 2514659 (1950-07-01), McClung
patent: 3320843 (1967-05-01), Schott, Jr.
patent: 3568554 (1971-03-01), Wiechec
patent: 3677117 (1972-07-01), Cutter
patent: 3863534 (1975-02-01), Scott
patent: 4131042 (1978-12-01), Rich et al.
patent: 4267753 (1981-05-01), Bennett

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