Binder device releasably engaging aperture or notch of sheet – Pliant – deformable sheet retainer – Flaccid retainer secured by knotted – intertwined or wedge...
Patent
1979-06-25
1981-11-17
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Pliant, deformable sheet retainer
Flaccid retainer secured by knotted, intertwined or wedge...
402 14, B42F 1302, B42F 1310
Patent
active
043008488
ABSTRACT:
A device is provided for binding together sheets of paper formed with two or more spaced holes and attaching the same to a folder or the like. The binder preferably is injection molded of a semi-flexible material and is formed with a flat backing plate and at least a pair of stems which initially are parallel to one another and perpendicular to the backing plate. The stems are spaced apart by a distance equal to the spacing between the holes in the paper and are formed with co-operating male and female elements along the length thereof which allow the stems to be folded one against the other in locking engagement. Each stem is provided with a hinged stop at the free end thereof, which stop folds in against the stem while papers are being inserted or removed and swings out perpendicular to the length of the stem to prevent accidental separation of papers from the stem. Extension pieces are connectable to the ends of the stems and are provided with stop means at the ends thereof. The extension pieces allow a group of papers to be transferred quickly from the stems to the extension pieces in order to remove one or more inner sheets and then replace the top most sheets without disturbing their alignment.
REFERENCES:
patent: 379375 (1888-03-01), Delano
patent: 2749589 (1956-06-01), Carman Jr.
patent: 3074133 (1963-01-01), Jones
patent: 3307234 (1967-03-01), Murphy
patent: 3534447 (1970-10-01), Muirhead
patent: 3994606 (1976-11-01), Messmer
Bell Paul A.
Brown John S.
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