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US 4,357,073 AGranted
Collapsible stereoscopic viewer and filmstrip holder therefor
AssigneeCreative Cartons of Ashland, Inc.
InventorRobert G. Carver
Life of this patent
Estimating the term…
Abstract
A collapsible stereoscopic slide viewer is comprised of top, bottom and side walls, a rear wall with viewing apertures therein, a front wall having a pair of light-admitting apertures therein and a lateral filmstrip-receiving channel formed outwardly proximate thereto, the side, rear and front walls being formed from a continuous lateral array; the viewer having offset viewing and light-admitting apertures permitting alternative viewing of two lateral series of stereographic slides disposed on a single filmstrip. A filmstrip holder for retaining laterally disposed stereographic images for use with the viewer is also disclosed. Blanks suitable for assembling the viewer and filmstrip holder are similarly described.
Claims24
A collapsible stereoscopic optical device comprising:
- (a) a front wall having a first pair of light-admitting apertures therethrough;
- (b) a rear wall assembly having first and second panels, said assembly having a pair of viewing apertures therethrough in optical registration with said light-admitting apertures;
- (c) first and second side walls wherein said front and side walls and said rear wall assembly panels are formed from a continuous lateral array of material;
- (d) top and bottom walls;
- and
- (e) a channel wall outwardly proximate said front wall having a second pair of light-admitting apertures therethrough in optical registration with said first pair of light-admitting apertures;
- wherein said channel wall and said front wall form a lateral filmstrip-receiving channel.
4 more elements
In a stereoscopic slide viewer having rear, top, bottom and side walls, a front wall having a pair of light-admitting apertures therein, and a lateral filmstrip-receiving channel formed outwardly proximate of said front wall by a channel wall spaced from said front wall, the improvement comprising said apertures lying substantially entirely within one of the portions of said front wall defined by a transverse medial line on said front wall.
A blank for forming a collapsible stereoscopic optical device comprising:
- (a) a lateral, continuous array of panels defined by transverse fold lines including
- (i) a first rear wall panel having a first pair of viewing apertures therethrough,
- (ii) a first side wall,
- (iii) a front wall having a pair of light-admitting apertures therethrough for optical registration with said viewing apertures,
- (iv) a second side wall, and
- (v) a second rear wall panel having a second pair of viewing apertures therethrough for optical registration with said first pair of viewing apertures;
- (b) a channel wall having a pair of light-admitting apertures therethrough for optical registration with said light-admitting apertures in said front wall;
- (c) a top wall contiguous to said channel wall along a lateral fold line and contiguous to one of said rear wall panels, along a lateral fold line forming a portion of a first lateral side of said array;
- and
- (d) a bottom wall contiguous to one of said rear wall panels along a lateral fold line forming a portion of a second lateral side of said array.
7 more elements
A filmstrip holder for receiving a stereographic filmstrip for stereoscopic viewing, said holder comprising:
- (a) a cover wall having a first lateral viewing slot therethrough;
- (b) a base wall having a second lateral viewing slot therethrough in registration with said first viewing slot;
- (c) a spacing wall disposed between said cover wall and said base wall having a lateral retaining slot therethrough larger than and overlaying said viewing slots, said retaining slot and walls forming a pocket peripheral to said viewing slots;
- and
- access means for access to said pocket, said access means comprising a transverse slit through said base wall proximate said second viewing slot.
2 more elements
A blank for forming a stereographic filmstrip holder comprising:
- (a) a cover wall having a first lateral viewing slot therethrough;
- (b) a base wall contiguous to said cover wall along a lateral fold line, said base wall having a second lateral viewing slot therethrough for registration with said first viewing slot and a transverse slit therethrough proximate said second viewing slot for inserting a filmstrip;
- and
- (c) a spacing wall contiguous to said base wall along a lateral fold line, said spacing wall having a lateral retaining slot therethrough larger than said first or second lateral viewing slot for overlaying alignment therewith.
1 more element
The combination of a collapsible stereoscopic viewer, a filmstrip and a filmstrip holder, said viewer comprising:
- (a) a front wall having a first pair of light-admitting apertures therethrough:
- (b) a rear wall assembly having first and second panels, said assembly having a pair of viewing apertures therethrough in optical registration with said light-admitting apertures;
- (c) a pair of magnification lenses, one lens being disposed in each of said viewing apertures;
- (d) first and second side walls wherein said front and side walls and said rear wall assembly panels are formed from a continuous lateral array of material;
- (e) top and bottom walls;
- (f) a channel wall outwardly proximate said front wall having a second pair of light-admitting apertures therethrough in optical registration with said first pair of light-admitting apertures wherein said channel wall and said front wall form a lateral filmstrip-receiving channel,
- said filmstrip holder comprising
- (g) a cover wall having a first lateral viewing slot therethrough;
- (h) a base wall having a second lateral viewing slot therethrough in registration with said first viewing slot;
- and
- (i) a spacing wall disposed between said cover wall and said base wall having a lateral retaining slot therethrough overlying said viewing slots, said retaining slot and walls forming a pocket peripheral to said viewing slots;
- and
- a filmstrip comprising a lateral series of stereographic pairs of translucent framed images said pairs being laterally spaced in registration with said first pair of light-admitting apertures, said framed images being similarly transversely oriented and of substantially the same dimensions as said first pair of light-admitting apertures,
- said filmstrip being disposed within said retaining slot in said holder so that said framed images are substantially disposed within said viewing slots in said holder, and
- said holder being adapted for laterally slidable insertion into and withdrawal from said channel, and for substantially transversely aligning said framed images with said first pair of light-admitting apertures when said holder is within said channel.
12 more elements
The combination of a collapsible stereoscopic viewer, a filmstrip and a filmstrip holder, said viewer comprising:
- (a) a front wall having a first pair of light-admitting apertures therethrough, said apertures lying substantially entirely within one of the portions of said front wall defined by a medial lateral line on said front wall;
- (b) a rear wall assembly having first and second panels, said assembly having a pair of viewing apertures therethrough in optical registration with said light-admitting apertures;
- (c) a pair of magnification lenses, one lense being disposed in each of said viewing apertures;
- (d) first and second side wall wherein said front and side walls and said rear wall assembly panels are formed from a continuous lateral array of material;
- (e) top and bottom walls;
- (f) a channel wall outwardly proximate said front wall having a second pair of light-admitting apertures therethrough in optical registration with said first pair of light-admitting apertures wherein said channel wall and said front wall form a lateral filmstrip-receiving channel,
- said filmstrip holder comprising
- (g) a cover wall having a first lateral viewing slot therethrough;
- (h) a base wall having a second lateral viewing slot therethrough in registration with said first viewing slot;
- and
- (i) a spacing wall disposed between said cover wall and said base wall having a lateral retaining slot therethrough overlying said viewing slots, said retaining slot and walls forming a pocket peripheral to said viewing slots;
- and
- a filmstrip comprising two lateral series of laterally spaced stereographic pairs of translucent framed images, said pairs being laterally spaced in registration with said first pair of light-admitting apertures, one series being transversely disposed with respect to the other, the images in each series being similarly transversely oriented and of substantially the same dimensions as said first pair of light-admitting apertures,
- said filmstrip being disposed within said retaining slot in said holder so that said framed images are substantially disposed within said viewing slots in said holder,
- said holder being adapted for laterally slidable insertion into and withdrawal from the said channel, and for substantially transversely aligning, alternatively, each of said series of framed images with the said first pair of light-admitting apertures when said holder is within said channel.
12 more elements
Dependencies are inferred from the claim text.