Adjustable multiple paper punch

Details Adjustable multiple paper punch Adjustable multiple paper punch

1988-12-15

1990-02-06

Yost, Frank T.

Cutting

Means to drive or to guide tool

With means to connect or disconnect tool and its drive

83549, 83618, 83687, B26F 104

Patent

active

048980552

ABSTRACT:
An improved paper punch construction has a body, several punching units carrying elements, and an actuating lever for actuating the punching elements, the lever normally not engaging the punching elements but each unit carrying a pivoted spacer for selectively causing the lever to actuate the associated punching element.

REFERENCES:
patent: 1124305 (1915-01-01), Day
patent: 1655315 (1928-01-01), Finley
patent: 2244320 (1941-06-01), Unger
patent: 2534094 (1950-12-01), Yerkes
patent: 3176570 (1965-04-01), Gaya
patent: 3392913 (1968-07-01), Neilsen
patent: 4449436 (1984-05-01), Semerjian et al.
patent: 4645399 (1987-02-01), Scharer

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