Method of die-punching holes in paper

Details Method of die-punching holes in paper Method of die-punching holes in paper

1993-01-29

1997-09-23

Peterson, Kenneth E.

Cutting

Processes

During movement of work past flying cutter

83345, 83553, 8369841, B26D 156

Patent

active

056692773

ABSTRACT:
In the operation of hole punching apparatus, a method of changing punched hole formats in paper, for loose leaf binder pages or the like, using cooperating rollers for the male punches and female die members having the various formats embodied therein, so that after the male punches are projected into the female die members for any one selected format for achieving alignment or registration therebetween, this alignment for any other subsequent format does not have to be repeated and only the punches placed in mounting openings on the male punch roller for the subsequent format; the female die members being no problem because they do not, without a cooperating male punch, cause punched holes in the paper.

REFERENCES:
patent: 1649635 (1927-11-01), Willard
patent: 3064513 (1962-11-01), Hershey
patent: 3956956 (1976-05-01), Bertholf
patent: 4036088 (1977-07-01), Ruskin
patent: 4343215 (1982-08-01), Fuchs
patent: 4594926 (1986-06-01), Propheter

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