Binding mechanism for loose-leaf binder

Details Binding mechanism for loose-leaf binder Binding mechanism for loose-leaf binder

1978-03-14

1979-10-30

Spicer, Jr., Robert L.

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

Coplanar with axis of rotation

402 28, 402 48, 402 55, 402 56, B42F 1312

Patent

active

041726758

ABSTRACT:
The present invention relates to a binding mechanism for loose-leaf binder comprising, mounted on a support, at least two rings each constituted by a fixed vertical receiver pin, the upper end of which is hollow, a fixed, vertical, tubular hoop-guide and a movable hoop-shaped member engaged, in closed position, in the upper end of the pin and slidable vertically in the hoop-guide and pivoting in a plane parallel to the plane of the leaves, to come to open position. The simultaneous control of the movement of the hoops is effected by a slide provided with ramps, the lower ends of the hoops being engaged both in fixed ramps fast with the support and in the ramps for controlling the slide. The invention is particularly applicable to binders or folders for perforated leaves.

REFERENCES:
patent: 634545 (1899-10-01), Stahle et al.
patent: 763176 (1904-06-01), Gresham et al.
patent: 1031220 (1912-07-01), Williams
patent: 1155382 (1915-10-01), Teamer

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