Method and construction for binding calendars and the like

Details Method and construction for binding calendars and the like Method and construction for binding calendars and the like

1978-12-11

1980-06-24

McQuade, John

Binder device releasably engaging aperture or notch of sheet

Resilient sheet retainer requiring deflection for sheet removal

Releasably attached to keeper

402 19, B42B 512

Patent

active

042087503

ABSTRACT:
A method and construction for binding wide groups of sheets such as calendars so that they may be opened without sheet offset and completely folded back. The method comprises the steps of forming a series of elongated openings along one edge of the sheet group, providing flat binding strips, and feeding the binder strips toward the apertures while simultaneously deforming the binding strips just before they enter the apertures so as to cause them to have a coiled shape, whereby the binding strips will be fed in curved fashion through the apertures and their ends will overlap to form individual circular coils. The construction of the invention comprises means for feeding a flat binder strip toward the aperture in the sheet group, means immediately adjacent the aperture in the path of the binding strip being fed and so positioned as to deflect the binding strip into the aperture and cause it to deflect so as to form a coil, and means for continuing to feed the binding strip in circular fashion so that its ends overlap to form an individual coil passing through the aperture and around the edge of the sheet group. If the binding strip is of plastic material, the invention further comprises heating means positioned in advance of the deflecting means to temporarily soften the plastic.

REFERENCES:
patent: 868746 (1907-10-01), York
patent: 2273824 (1942-02-01), Barrett
patent: 2423817 (1947-07-01), Rose
patent: 2435561 (1948-02-01), Spinner
patent: 3038181 (1962-06-01), Nadherny
patent: 3124818 (1964-03-01), Byland
patent: 3555587 (1971-01-01), Seaborn
patent: 3576690 (1971-04-01), Staats et al.
patent: 3763513 (1973-10-01), Cooley
patent: 3839759 (1974-10-01), Staats et al.

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