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US 3,935,652 AGranted
Circular magazine for a slide projector
AssigneeErnst Leitz G.m.b.H.
InventorHans Mulch
Life of this patent
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AssigneeErnst Leitz G.m.b.H.
InventorHans Mulch
Estimating the term…
A circular magazine for a slide projector which is adapted to be molded in one piece. The magazine has a circular bottom wall (5) with an internal hub extending vertically therefrom defining an inside boundary wall (4). A plurality of slide compartment walls (2a) extend vertically from the bottom wall. At the upper right hand corner of each compartment wall a portion of the wall is elevated or expanded (6). Slides are held in position by the resilient pressure of the expanded portions (6) of corresponding compartment walls against the upper right hand corners of the slides and the lower left hand corners of the slides are seated against the L-shaped cross section of the bottom wall (5) and boundary wall (4). The legs of the bottom wall (5) and boundary wall (4) are foreshortened to lengths less than the linear dimensions of a slide so that a gripping device can extract the slides vertically to a projector or horizontally to the right into a projector.
A circular magazine for rectangular slides comprising an annular bottom wall (5) with a hub (4) defining a boundary wall rising from the inside diameter of said bottom wall, a plurality of compartment walls distributed uniformly and radially around said hub extending from said bottom wall and said hub, said compartment walls (2a) having lengths parallel and vertical to said bottom wall and corresponding substantially to the lengths of a rectangular slide, the compartment walls having securing means (6) diagonally opposite the intersection of said bottom wall and said hub, said securing means comprising bulges for precluding accidental ejection of the slides and defining slits (7) between each neighbored compartment wall, said slits being narrower than the thickness of a slide being used, said hub being of low height compared to the vertical length of the compartment walls, said hub, said bottom wall and said securing means matingly receiving rectangular slides lying with one edge on said bottom wall and between said compartment walls, said securing means and said bottom wall having a combined length less than said parallel length of the compartment walls and being disposed to each other without overlapping.
A circular magazine for rectangular slides comprising an annular bottom wall (5) with a hub (4) defining a boundary wall rising from the inside diameter of said bottom wall, a plurality of compartment walls distributed uniformly and radially around said hub extending from said bottom wall and said hub, said compartment walls (2a) having lengths parallel and vertical to said bottom wall and corresponding substantially to the lengths of a rectangular slide, the compartment walls having securing means (6) diagonally opposite the intersection of said bottom wall and said hub, said securing means comprising bulges for precluding accidental ejection of the slides and defining slits (7) between each neighbored compartment wall, said slits being narrower than the thickness of a slide being used, said hub being of low height compared to the vertical length of the compartment walls, said hub, said bottom wall and said securing means matingly receiving rectangular slides lying with one edge on said bottom wall and between said compartment walls, said securing means and said bottom wall having a combined length less than said parallel length of the compartment walls and being disposed to each other without overlapping, and each of said compartment walls being further provided on both sides with mold separation steps extending from the outer diameter of said bottom wall to the inner diameter of said securing means whereby all parts of the magazine, including the annular bottom wall, the hub and the compartment walls with their securing means adapted to be molded in one piece.
Dependencies are inferred from the claim text.