Binder device releasably engaging aperture or notch of sheet – Opposed sheet retainers involving relative rectilinear travel – Telescopic retainers with means to telescopically drive...
Patent
1977-09-16
1979-11-27
Hinson, Harrison L.
Binder device releasably engaging aperture or notch of sheet
Opposed sheet retainers involving relative rectilinear travel
Telescopic retainers with means to telescopically drive...
402 53, B42F 302
Patent
active
041758803
ABSTRACT:
Device for interlocking a stack of writing material having perforations formed therein along a margin thereof, the perforations formed in the writing material being aligned in the stack thereof so as to form respective through-bores extending from opposite marginal surfaces of the stack that are disposed adjacent to and on both sides of a back surface of the stack, includes two binding strips of identical construction, each of the binding strips having a first portion engageable with the back of the writing-material stack for covering at least part thereof, and a second portion engageable with and covering a respective one of the opposite marginal surfaces of the stack, each of the binding strips further having stringing rods and sleeves extending from the respective second portion thereof, the rods and sleeves being disposed in mutually alternating sequence and having a mutual spacing corresponding to the spacing of the aligned holes formed in the stack of writing material, the rods being formed with outer detents along the length thereof and the sleeves being formed with corresponding inner detents along the length thereof, the rods of each of the two binding strips being lockingly engageable in the sleeves of the other of the two binding strips by the detents thereof within the respective through-bores formed in the stack of writing material.
REFERENCES:
patent: 948502 (1910-02-01), Eichorn
patent: 1044753 (1912-11-01), Cooley
patent: 2046007 (1936-06-01), Unger
patent: 2308777 (1943-01-01), Pitt
patent: 3251260 (1966-05-01), Serdechny
patent: 3647306 (1972-03-01), Chamberlin
Hinson Harrison L.
Lerner Herbert L.
Postalia GmbH
LandOfFree
Device for interlocking perforated writing material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for interlocking perforated writing material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for interlocking perforated writing material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-800991