Binder assembly

Binder device releasably engaging aperture or notch of sheet – Opposed sheet retainers involving relative rectilinear travel – With or including separable sheet transfer means

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Details

B42F 302, B42F 1330

Patent

active

042577152

ABSTRACT:
A binder assembly for catalogs and the like having a base plate provided with opposed side flanges, one of which is fixed and the other of which is hinged. A material-holding device is connected to the hinged flange and is movable to an open position and to a closed position relative to the fixed flange. A latch interconnects the fixed flange and the material-holding device for selectively locking the material-holding device in a closed position, the latch automatically locking the material-holding device in its closed position as the material-holding device is moved to the closed position, and automatically ejecting the material-holding device from its closed position when unlocked. The material-holding device includes a lock lug. The latch includes a slot in the fixed flange, and a locking element mounted adjacent the fixed flange for movement between a locked position and an unlocked position relative to the fixed flange, the locking element being provided with a slot that is aligned with the fixed flange slot for receiving the lock lug when the locking element is in its unlocked position. A cam surface partially defines the locking element slot, and is engageable with the lug for automatically moving the locking element to its locked position and locking the lug as the material-holding device is moved to its closed position, and for automatically unlocking and ejecting the lug from the slots as the locking element is moved to its unlocked position.

REFERENCES:
patent: 957895 (1910-05-01), Murphy
patent: 1337513 (1920-04-01), Haldeman
patent: 2784719 (1957-03-01), Panfil
patent: 2915068 (1959-12-01), Miyamoto

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