Slot-punching device

Details Slot-punching device Slot-punching device

1988-09-12

1990-01-16

Schran, Donald R.

Cutting

With product handling means

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

83139, 83382, 83564, 83589, 83599, B26F 118

Patent

active

048935352

ABSTRACT:
A device for punching two parallel narrow slots in a sheet of paper at 45 degrees to one edge of the sheet and spaced apart slightly less than the corner-to-corner diagonal dimension of a card which is to be attached to that sheet by inserting diagonal corner segments into the slots. The slot-punching device has a generally flat base with an adjustable stop. A lever arm pivoted on the base carries two punches with respective narrow blades for reception in the base when the lever arm is lowered. A reciprocable head on top of the lever arm is depressed to push the punch blades down into the base when the lever arm is down.

REFERENCES:
patent: 914613 (1909-03-01), Storlie
patent: 1294033 (1919-02-01), Bizette
patent: 2379003 (1945-06-01), Hedberg
patent: 2449108 (1948-09-01), Carlock
patent: 2867276 (1959-01-01), Taylor
patent: 3308699 (1967-03-01), Illingworth et al.
patent: 3362271 (1968-01-01), Willis
patent: 3408889 (1968-11-01), Murphy
patent: 3520220 (1970-07-01), Acker
patent: 3762258 (1973-10-01), Bender
patent: 4194423 (1980-03-01), Cutler, Jr.

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