Twin lens camera system with sliding back

Claim 2

A twin lens identification camera comprising: a first section including two parallel optical systems foR forming images of subjects positioned in front of said camera system at a focal plane; a septum in said first section providing a light passage system of two light passages for said optical systems and for use with a baffle back plate having an opening in continuance of both of said light passages and having a given size in relation to said light passage system; a baffle back plate in said first section, including an opening therethrough in continuance of said light passages and provided in a size significantly less than said given size; an extension of said septum, sized to fit in said lesser size baffle back plate opening, from said septum, through said lesser size baffle back plate opening, to a point approaching and adjacent said focal plane; a second section attached to said first section and including means for mounting a sheet of photographic material at said focal plane, said sheet of photographic material having an area of the order of twice the area of said lesser size baffle back plate opening; and means providing relative movement capability between said second section and said optical systems to align first and second portions of said sheet of photographic material with said optical systems.

Claim 3

The camera of claim 1, wherein: each of said portions of said sheet of photographic material includes two subject image areas, one for each of said optical systems.

Claim 4

The camera of claim 1, wherein: said second section comprises an assembly of a camera back and a holder for said sheet of photographic material; said camera back having a recess in which said holder is mounted, said holder being of significantly less area than the area of said recess.

Claim 5

The camera of claim 1, wherein: said second section comprises an assembly of a camera back and a holder for said sheet of photographic material; said camera back having a recess in which said holder is mounted, said holder being of significantly less area than the area of said recess; a spring mounted in said camera back recess to engage and press said holder against a wall of said recess; said spring being oversize with respect to the size of spring necessary to secure in said recess a full size holder whose area is of the order of the area of said recess.

Claim 6

The camera of claim 1, wherein: said second section comprises an assembly of a camera back and a holder for said sheet of photographic material; said camera back having a recess in which said holder is mounted, said holder being of significantly less area than the area of said recess; and said camera back and said holder being provided with mutually unique configurations which prevent assembly of said holder with a camera back lacking such configuration.

Claim 7

The camera of claim 1, wherein: said second section comprises an assembly of a camera back and a holder for said sheet of photographic material; said camera back having a recess in which said holder is mounted, said holder being of significantly less area than the area of said recess; said camera back and said holder being provided with mutually unique configurations which prevent assembly of said holder with a camera back lacking such configuration; and said unique configurations comprising side wall openings in said camera back and side wall protuberances on said holder.

Claim 8

The camera of claim 1, additionally comprising: terminal point stop means for ending said relative movement in each of two directions along the line of such relative movement; wherein said stop means are separated along said line of movement a significantly different distance than that compatible with full capability of such relative movement if related to said given size of said baffle back plate opening.

Claim 9

The camera of claim 1, wherein: said second section comprises an assembly of a camera back and a holder for said sheet of photographic material; said camera back having a recess in which said holder is Mounted, said holder being of significantly less area than the area of said recess; and stop means for engaging said camera back to limit such relative movement in each of two directions of such movement; wherein said stop means comprises two stop elements, separated along the line of such movement a significantly greater distance than that compatible with full capability of such relative movement if related to the said given size of said baffle back plate opening.

Claim 10

The camera of claim 1, wherein: said second section comprises an assembly of a camera back and a holder for said sheet of photographic material; said camera back having a recess in which said holder is mounted, said holder being of significantly less area than the area of said recess; and stop means for engaging said camera back to limit such relative movement in each of two directions of such movement; wherein said stop means comprises two bars as stop elements with their ends as stop positions; each of said bars being secured to said baffle back plate and located within the compass of said back recess, and each of said bars being of significantly greater length than that compatible with the full capability of such relative movement if related to said given size of said baffle back plate opening.

Claim 11

The camera of claim 1, additionally comprising: a spring included in said means for so mounting said sheet of photographic material; and a pair of elongate stops to limit said movement capability; and wherein; the size of said septum extension; the size of said sheet of photographic material; the length of said stops; and the size of said spring; are all compatible with: the said given size of said opening in said baffle back plate.

Claim 12

A two lens camera for providing a plurality of identification photographs on a single sheet of photographic material, said camera comprising: a first section; objective lens means positioned in said first section; a back for carrying a photographic sheet of a given size and including aperture defining means to facilitate the exposure of the entire photographically useful portion of such a photographic sheet; means for mounting said back on said first section for reversible sliding movement between two terminal positions with respect thereto so as to alternately position different halves of such a photographic sheet in operative relationship with said objective lens means; means adapting said camera for use with a size of photographic sheet which is less than said given size of such first-mentioned photographic sheet; said adapting means comprising structure which reduces the size of portions of light passages in said camera and stop means which reduces the terminal positions between which said back may be slidably moved relative to said first section.

Claim 13

A two lens camera for providing a plurality of identification photographs on a single sheet of photographic material, said camera comprising: a first section; objective lens means positioned in said first section; a back for carrying a photographic sheet of a given size and including aperture defining means to facilitate the exposure of the entire photographically useful portion of such a photographic sheet; means for mounting said back on said first section for reversible sliding movement between two terminal positions with respect thereto so as to alternately position different halves of such a photographic sheet in operative relationship with said objective lens means; means adapting said camera for use with a size of photographic sheet which is less than said given size of such first-mentioned photographic sheet; said adapting means comprising structure which reduces the size of portions of light passages in said camera and stop means which reduces the terminal positions between which said back may be slidably moved relative to said first section.

Claim 14

In a camera system for taking four pictures by forming images on each of four different areas of a single sheet of photographic material, wherein said camera system comprises: a first section including two optical systems; a septum dividing said first section into two light passages, one for each of said optical systems; a camera back plate on said first section with a light aperture encompassing both said light passages; a camera baffle back plate mounted on said camera back plate with a light aperture also encompassing both said light passages and provided with baffle plates as extensions of said light passages; a septum extension mounted in continuance of said septum and extending through said camera back plate and camera baffle back plate apertures as an extension of said division of said first section into two light passages; a second section attached to said first section for containing said sheet of photographic material and movable a given distance on said first section with respect to said optical systems; a film pack, spring mounted in said second section, for presenting each Of two portions of such single sheet of photographic material to said optical systems in accordance with said movement of said second section; and means for adapting said camera system to the use of a film pack, and consequently a sheet of photographic material, which is smaller than the maximum size capable of being received in effective use in said second section.

Claim 15

In a camera system for taking four pictures by forming images on each of four different areas of a single sheet of photographic material, wherein said camera system comprises: a first section including two optical systems; a septum dividing said first section into two light passages, one for each of said optical systems; a camera back plate on said first section with a light aperture encompassing both said light passages; a camera baffle back plate mounted on said camera back plate with a light aperture also encompassing both said light passages and provided with baffle plates as extensions of said light passages; a septum extension mounted in continuance of said septum and extending through said camera back plate and camera baffle back plate apertures as an extension of said division of said first section into two light passages; a second section attached to said first section for containing said sheet of photographic material and movable a given distance on said first section with respect to said optical systems; a film pack, spring mounted in said second section, for presenting each Of two portions of such single sheet of photographic material to said optical systems in accordance with said movement of said second section; and means for adapting said camera system to the use of a film pack, and consequently a sheet of photographic material, which is smaller than the maximum size capable of being received in effective use in said second section.

Claim 16

The camera system of claim 12, in which said adaptation means comprises: a lesser size opening in said back plate; a lesser size opening in said baffle back plate; a lesser size septum extension; a new placement of one of said baffle plates; a larger spring in said second section for holding said smaller film pack in place; and stop means for limiting said movement of said second section to a lesser distance; all consonant with the size of said smaller photographic sheet.

Claim 17

The camera system of claim 12 wherein: said second section is a camera back with a frame support for a film pack holding said photographic sheet; and said spring mounting of said film pack is a leaf spring applied to one end of said film pack for resilient holding bias of said film pack along said frame and against an end abutment of said frame.

Claim 18

A twin lens camera system comprising: a first section including a pair of parallel optical systems for forming images of subjects positioned in front of said camera system at a focal plane; a second section, attached to said first section and including means for mounting a sheet of photographic material at said focal plane; means for providing light access between said sections through which said images are formed at said focal plane; means for dividing said first section into individual light passages for light paths of each of said optical systems, with said dividing means extending to a point adjacent said focal plane; means for enabling relative movement between said sections in said attachment and between positions to present different areas of said photographic sheet to said optical systems, while maintaining said light access between said sections, said second section being mounted on said first section for and directly accessible to manual initiation of said movement of said sections; overcenter spring means connected between said sections in aid of portions of said manual movement; elongate stop bar means mounted on said first section and located within said second section for end engagements with abutments in said second section as determinative of said position; and light barrier means between said sections in the form of spaced overlapping members provided for relative movement in consequence of said movement between said sections, without contact between said overlapping members.

Claim 19

A twin lens camera system comprising: a first section including a pair of parallel optical systems for forming images of subjects positioned in front of said camera system at a focal plane; a second section, attached to said first section and including means for mounting a sheet of photographic material at said focal plane; means for providing light access between said sections through which said images are formed at said focal plane; means for dividing said first section into individual light passages for light paths of each of said optical systems, with said dividing means extending to a point adjacent said focal plane; means for enabling relative movement between said sections in said attachment and between positions to present different areas of said photographic sheet to said optical systems, while maintaining said light access between said sections, said second section being mounted on said first section for and directly accessible to manual initiation of said movement of said sections; overcenter spring means connected between said sections in aid of portions of said manual movement; elongate stop bar means mounted on said first section and located within said second section for end engagements with abutments in said second section as determinative of said position; and light barrier means between said sections in the form of spaced overlapping members provided for relative movement in consequence of said movement between said sections, without contact between said overlapping members.

Claim 20

A twin optical system camera comprising: a sliding back for selectively aligning said twin optical systems with different areas of one size of a sheet of photographic material, mounted in a first size film magazine, in said back, said sliding back being provided with a recess for receiving a film magazine; whereby at one position of said sliding back, one edge of one of said areas of said sheet defines a reference line location for said sheet with respect to said alignment of said sheet areas with said optical systems; and adapter means for enabling the use of another size sheet of photographic material, mounted in a second size film magazine, in said camera, also with alignment capability of different areas of said other size sheet with said optical systems; said adaptor means including means for locating and holding said second size film magazine in said sliding back, with one edge of one of each of said different areas of said other size sheet positionable at said reference line location, said locating and holding means including a spring mounted in said recess for engaging a film magazine and biasing said magazine against one wall of said recess to achieve said reference line Position.

Claim 21

A twin optical system camera comprising: a sliding back for selectively aligning said twin optical systems with different areas of one size of a sheet of photographic material, mounted in a first size film magazine, in said back, said sliding back being provided with a recess for receiving a film magazine; whereby at one position of said sliding back, one edge of one of said areas of said sheet defines a reference line location for said sheet with respect to said alignment of said sheet areas with said optical systems; and adapter means for enabling the use of another size sheet of photographic material, mounted in a second size film magazine, in said camera, also with alignment capability of different areas of said other size sheet with said optical systems; said adaptor means including means for locating and holding said second size film magazine in said sliding back, with one edge of one of each of said different areas of said other size sheet positionable at said reference line location, said locating and holding means including a spring mounted in said recess for engaging a film magazine and biasing said magazine against one wall of said recess to achieve said reference line Position.

Claim 22

A camera comprising: a first section including at least one optical system for forming images of subjects positioned in front of said camera system at a focal plane; means in said first section for defining a light passage system for said optical system and arranged for use with a baffle back plate having an opening in continuance of said light passage, said opening having a given size in relation to said light passage system to facilitate the formation of an image at said focal plane of a given height; a baffle back plate in said first section including an opening therethrough in continuance of said light passage and provided in a size significantly less than said given size; an extension of said light passage system defining means sized to conform with said lesser size baffle back plate opening and extending from said lesser size baffle back plate opening to a point approaching an adjacent said focal plane wherein it defines an area having a height less than said given height; a second section attached to said first section and including means for mounting a sheet of photographic material at said focal plane, said sheet of photographic material having an area the height of which is on the order of twice the height of the area defined by said extension of said focal plane; means for providing relative movement capability between said second section and said first section to alternately align first and second portions of said sheet of photographic material with the area defined by said extension; and terminal point stop means for ending said relative movement in each of two directions along the line of such relative movement, said stop means being separated along said line of movement a distance consonant with the height of said photographic material area and which differs significantly from the distance similar stop means would be separated along said line of movement to be compatible with the full capability of such relative movement as related to said given size baffle back plate opening.

Claim 23

A camera comprising: a first section including at least one optical system for forming images of subjects positioned in front of said camera system at a focal plane; means in said first section for defining a light passage system for said optical system and arranged for use with a baffle back plate having an opening in continuance of said light passage, said opening having a given size in relation to said light passage system to facilitate the formation of an image at said focal plane of a given height; a baffle back plate in said first section including an opening therethrough in continuance of said light passage and provided in a size significantly less than said given size; an extension of said light passage system defining means sized to conform with said lesser size baffle back plate opening and extending from said lesser size baffle back plate opening to a point approaching an adjacent said focal plane wherein it defines an area having a height less than said given height; a second section attached to said first section and including means for mounting a sheet of photographic material at said focal plane, said sheet of photographic material having an area the height of which is on the order of twice the height of the area defined by said extension of said focal plane; means for providing relative movement capability between said second section and said first section to alternately align first and second portions of said sheet of photographic material with the area defined by said extension; and terminal point stop means for ending said relative movement in each of two directions along the line of such relative movement, said stop means being separated along said line of movement a distance consonant with the height of said photographic material area and which differs significantly from the distance similar stop means would be separated along said line of movement to be compatible with the full capability of such relative movement as related to said given size baffle back plate opening.

Claim 24

Camera apparatus alternately useful in film exposure operations with a first substantially flat film pack of relatively large unexposed film units, such first film pack including a pair of side walls of a given length spaced apart a given distance, or a second substantially flat film pack of relatively smaller unexposed film units, such second film pack having a pair of side walls of a length less than such given length spaced apart a distance equal to such given distance, such second film pack additionally including a pair of protuberances each extending outwardly of a respective one of its such side walls, said camera apparatus comprising: means for defining an opening of sufficient size through which light rays may enter a such first film pack to effect the exposure of substantially the entire photographically useful area of such film units retained therein; and means for alternately receiving and mounting either a such first film pack and a such second film pack in operative relationship with respect to said opening defining means, said receiving and mounting means including a base shoulder, a spring spaced from said base shoulder a predetermined distance so that at least a such first film pack or a such second film pack may be disposed lengthwise therebetween with said spring yieldably urging it against said base shoulder, and a pair of spaced apart substantially parallel elements positioned to extend lengthwise of a such first film pack and a such second film pack when either is operably positioned in said receiving and mounting means, each said element having a recess formed therein configured and located to accommodate a respective one such protuberance when a such second film pack is inserted into said camera apparatus.

Claim 25

Camera apparatus alternately useful in film exposure operations with a first substantially flat film pack of relatively large unexposed film units, such first film pack including a pair of side walls of a given length spaced apart a given distance, or a second substantially flat film pack of relatively smaller unexposed film units, such second film pack having a pair of side walls of a length less than such given length spaced apart a distance equal to such given distance, such second film pack additionally including a pair of protuberances each extending outwardly of a respective one of its such side walls, said camera apparatus comprising: means for defining an opening of sufficient size through which light rays may enter a such first film pack to effect the exposure of substantially the entire photographically useful area of such film units retained therein; and means for alternately receiving and mounting either a such first film pack and a such second film pack in operative relationship with respect to said opening defining means, said receiving and mounting means including a base shoulder, a spring spaced from said base shoulder a predetermined distance so that at least a such first film pack or a such second film pack may be disposed lengthwise therebetween with said spring yieldably urging it against said base shoulder, and a pair of spaced apart substantially parallel elements positioned to extend lengthwise of a such first film pack and a such second film pack when either is operably positioned in said receiving and mounting means, each said element having a recess formed therein configured and located to accommodate a respective one such protuberance when a such second film pack is inserted into said camera apparatus.

Claim 26

Camera apparatus alternately useful in film exposure operations with a first substantially flat film pack of relatively large unexposed film units, such first film pack including a pair of side Walls of a given length spaced apart a given distance, or a second substantially flat film pack of relatively smaller unexposed film units, such second film pack having a pair of side walls of a length less than such given length spaced apart a distance equal to such given distance, such second film pack additionally including a pair of protuberances each extending outwardly of a respective one of its such side walls, said camera apparatus comprising: means for defining an opening of sufficient size through which light rays may enter a such first film pack to effect the exposure of substantially the entire photographically useful area of such film units retained therein; and means for alternately receiving and mounting either a such first film pack and a such second film pack in operative relationship with respect to said opening defining means, said receiving and mounting means including a base shoulder located to support at least a such first film pack or a such second film pack when it is operably positioned within said camera apparatus and a pair of spaced apart substantially parallel elements positioned to extend lengthwise of a such first film pack and a such second film pack when either is operably positioned in said receiving and mounting means, each said element having a recess formed therein configured and located to accommodate a respective one such protuberance when a such second film pack is inserted into said camera apparatus.

Claim 27

Camera apparatus alternately useful in film exposure operations with a first substantially flat film pack of relatively large unexposed film units, such first film pack including a pair of side Walls of a given length spaced apart a given distance, or a second substantially flat film pack of relatively smaller unexposed film units, such second film pack having a pair of side walls of a length less than such given length spaced apart a distance equal to such given distance, such second film pack additionally including a pair of protuberances each extending outwardly of a respective one of its such side walls, said camera apparatus comprising: means for defining an opening of sufficient size through which light rays may enter a such first film pack to effect the exposure of substantially the entire photographically useful area of such film units retained therein; and means for alternately receiving and mounting either a such first film pack and a such second film pack in operative relationship with respect to said opening defining means, said receiving and mounting means including a base shoulder located to support at least a such first film pack or a such second film pack when it is operably positioned within said camera apparatus and a pair of spaced apart substantially parallel elements positioned to extend lengthwise of a such first film pack and a such second film pack when either is operably positioned in said receiving and mounting means, each said element having a recess formed therein configured and located to accommodate a respective one such protuberance when a such second film pack is inserted into said camera apparatus.

Claim 28

The camera apparatus of claim 19 wherein said base shoulder is located to support a such first film pack when it is operably positioned within said camera apparatus and a such second film pack when it is operably positioned within said camera apparatus.

Claim 29

Camera apparatus alternately useful in film exposure operations with a first substantially flat rectangularly shaped film pack of relatively large unexposed film units, such first film pack including a pair of side walls of a given length spaced apart a given distance, or a second substantially flat rectangularly shaped film pack of relatively smaller unexposed film units, such second film pack having a pair of side walls of a length less than such given length spaced apart a distance equal to such given distance, such second film pack additionally including a pair of protuberances each extending outwardly of a respective one of its such side walls, said camera apparatus comprising: means for defining an opening of sufficient size through which light rays may enter a such first film pack to effect the exposure of substantially the entire photographically useful area of such film units retained therein when a such first film pack is disposed in operative relationship with respect to said opening defining means; and means for alternately receiving and mounting either a such first film pack and a such second film pack in operative relationship with respect to said opening defining means, said receiving and mounting means including means, comprising a pair of side walls and a base shoulder extending therebetween, for defining a substantially rectangular recess sized to receive and support a such first film pack with a portion of such first film pack seated against said base shoulder, said side walls of said camera apparatus being disposed in close adjacency with respective such side walls of such first film pack when a such first film pack is mounted in said camera apparatus, each said side wall of said camera apparatus having a recess formed therein configured and located to accommodate a respective one such protuberance when a such second film pack is inserted into said camera apparatus.

Claim 30

Camera apparatus alternately useful in film exposure operations with a first substantially flat rectangularly shaped film pack of relatively large unexposed film units, such first film pack including a pair of side walls of a given length spaced apart a given distance, or a second substantially flat rectangularly shaped film pack of relatively smaller unexposed film units, such second film pack having a pair of side walls of a length less than such given length spaced apart a distance equal to such given distance, such second film pack additionally including a pair of protuberances each extending outwardly of a respective one of its such side walls, said camera apparatus comprising: means for defining an opening of sufficient size through which light rays may enter a such first film pack to effect the exposure of substantially the entire photographically useful area of such film units retained therein when a such first film pack is disposed in operative relationship with respect to said opening defining means; and means for alternately receiving and mounting either a such first film pack and a such second film pack in operative relationship with respect to said opening defining means, said receiving and mounting means including means, comprising a pair of side walls and a base shoulder extending therebetween, for defining a substantially rectangular recess sized to receive and support a such first film pack with a portion of such first film pack seated against said base shoulder, said side walls of said camera apparatus being disposed in close adjacency with respective such side walls of such first film pack when a such first film pack is mounted in said camera apparatus, each said side wall of said camera apparatus having a recess formed therein configured and located to accommodate a respective one such protuberance when a such second film pack is inserted into said camera apparatus.

Claim 31

An identification camera system for producing a plurality of subject photographs on a single sheet of photographic material, with each such photograph occupying a different area of such photographic sheet, said camera system comprising: a first section including two optical systems each for forming an image in different areas of the same focal plane; a seconD section attached to said first section and including means for mounting a sheet of photographic material in said focal plane, such photographic sheet being of a size at least sufficient to provide a different area for each of four such images; septum means in said first section for dividing said first section into two separate light chambers one of which serves one of said optical systems and the other of which serves the other of said optical systems; means for achieving relative movement between said second section and said optical systems to present first and second areas of such sheet of photographic material to one of said optical systems and third and fourth areas of such sheet of photographic material to the other of said optical systems, whereby said first and third areas may be first exposed to record an image on each and, after said second section has been moved with respect to said optical systems, said second and fourth areas may be exposed to record an image on each; said second section comprising a camera back for receiving a photographic sheet of a size less than the maximum which said camera back is capable of receiving; and adaptor means for operatively including said lesser size photographic sheet in said system, said adaptor means comprising: an oversize spring in said second section to hold said lesser size sheet; a camera back plate assembly with a light aperature of reduced size; a baffle plate on said camera back plate in a new position consonent with said reduced size of said back plate light aperature; a septum extension through said light aperatures with said septum extension reduced in size consonent with said reduction in size of said aperature; and stop means for limiting said relative movement between said second section and said optical systems to a lesser distance consonent with said lesser size of said photographic sheet.

Claim 32

An identification camera system for producing a plurality of subject photographs on a single sheet of photographic material, with each such photograph occupying a different area of such photographic sheet, said camera system comprising: a first section including two optical systems each for forming an image in different areas of the same focal plane; a seconD section attached to said first section and including means for mounting a sheet of photographic material in said focal plane, such photographic sheet being of a size at least sufficient to provide a different area for each of four such images; septum means in said first section for dividing said first section into two separate light chambers one of which serves one of said optical systems and the other of which serves the other of said optical systems; means for achieving relative movement between said second section and said optical systems to present first and second areas of such sheet of photographic material to one of said optical systems and third and fourth areas of such sheet of photographic material to the other of said optical systems, whereby said first and third areas may be first exposed to record an image on each and, after said second section has been moved with respect to said optical systems, said second and fourth areas may be exposed to record an image on each; said second section comprising a camera back for receiving a photographic sheet of a size less than the maximum which said camera back is capable of receiving; and adaptor means for operatively including said lesser size photographic sheet in said system, said adaptor means comprising: an oversize spring in said second section to hold said lesser size sheet; a camera back plate assembly with a light aperature of reduced size; a baffle plate on said camera back plate in a new position consonent with said reduced size of said back plate light aperature; a septum extension through said light aperatures with said septum extension reduced in size consonent with said reduction in size of said aperature; and stop means for limiting said relative movement between said second section and said optical systems to a lesser distance consonent with said lesser size of said photographic sheet.