Sheet lifter with punches for looseleaf book

Details Sheet lifter with punches for looseleaf book Sheet lifter with punches for looseleaf book

1975-04-29

1976-08-17

Schnall, Jerome

Binder device releasably engaging aperture or notch of sheet

Sheet retainer with separate aperture making device

30358, 402 4, 402 24, B42F 1340, B26F 100

Patent

active

039751058

ABSTRACT:
This invention provides a special sheet lifter in a looseleaf notebook, and means associated with the sheet lifter for punching openings in an unperforated sheet at locations that fit the ring spacing of the looseleaf book. A flap portion hinged to the main body portion of the sheet lifter swings about a hinge line of a punch and die structure for making holes in any sheet at spacings for receiving the rings of the looseleaf book with which the sheet lifter is a part.

REFERENCES:
patent: 1285048 (1918-11-01), Cooke
patent: 1505775 (1924-08-01), Gail
patent: 2105233 (1938-01-01), Schade
patent: 2445440 (1948-07-01), Klemm
patent: 3087498 (1963-04-01), Vogel
patent: 3303564 (1967-02-01), Hendricks

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