Perforating jig

Details Perforating jig Perforating jig

1982-01-27

1984-03-13

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33DIG1, 83454, 83743, B26D 500, B27B 500

Patent

active

044359063

ABSTRACT:
A perforating jig assists a punch in perforating cards or sheets for insertion into a loose-leaf notebook or ring binder. The perforating jig comprises a folded plate body or two superimposed plates having in a folded or joined edge thereof a plurality of recesses or notches in which a front perforating end of the punch can be fitted. A card or sheet which it is desired to perforate is inserted between the two plates until an edge of the card or sheet is exposed through the recesses. Then, the perforating end of the punch is inserted into the recesses in turn to perforate the card exposed in the recesses.

REFERENCES:
patent: 561859 (1896-06-01), Boynton
patent: 2693035 (1954-11-01), Beck
patent: 3201874 (1965-08-01), Christy
patent: 3557463 (1971-01-01), Perry et al.
patent: 3846915 (1974-11-01), Obermark et al.
patent: 4060333 (1977-11-01), White
patent: 4131040 (1978-12-01), Bollmer
patent: 4361964 (1982-12-01), Hennessee

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