Binder device releasably engaging aperture or notch of sheet – Pliant – deformable sheet retainer – Secured by folded portion thereof
Patent
1986-03-28
1987-07-21
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Pliant, deformable sheet retainer
Secured by folded portion thereof
24129R, 402 13, 402 48, B42F 1304
Patent
active
046814736
ABSTRACT:
The invention refers to a loose-leaf binder for a stack of paper sheets, comprising a cord or twine adapted to be passed through a perforation in a stack of sheets and comprising a clamping means for the cord or twine formed by a plate member having a first slot extending from the edge of the plate member in an approximately perpendicular direction relative to said edge to approximately the center of the plate member and adapted to receive the cord or twine, and a second slot extending from the edge of the plate member located opposite the mouth of the first slot at an acute angle relative to a tangent line to said edge at that location to form an acute-angled portion delimited by the second slot and the edge of the plate member, the acute-angled portion obliquely upwardly bent to one side of the surface of the plate member.
REFERENCES:
patent: 484268 (1892-10-01), Westrup
patent: 708102 (1902-09-01), Waldo Jr.
patent: 828765 (1909-08-01), Nilsson
patent: 1008810 (1911-11-01), Freese
patent: 1205496 (1916-11-01), Whitehead
patent: 1366212 (1921-01-01), Pollard
patent: 1383665 (1921-07-01), Rohan
patent: 1426537 (1922-08-01), Bauer
patent: 1690230 (1928-11-01), Kline
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