CA1292382C - Side load surveillance camera - Google Patents
Side load surveillance cameraInfo
- Publication number
- CA1292382C CA1292382C CA000528627A CA528627A CA1292382C CA 1292382 C CA1292382 C CA 1292382C CA 000528627 A CA000528627 A CA 000528627A CA 528627 A CA528627 A CA 528627A CA 1292382 C CA1292382 C CA 1292382C
- Authority
- CA
- Canada
- Prior art keywords
- film
- magazine
- chamber
- front wall
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000000694 effects Effects 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B19/00—Cameras
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/28—Locating light-sensitive material within camera
- G03B17/30—Locating spools or other rotatable holders of coiled film
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Cameras Including Film Mechanisms (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
- Projection-Type Copiers In General (AREA)
- Cameras In General (AREA)
- Viewfinders (AREA)
- Structure And Mechanism Of Cameras (AREA)
Abstract
ABSTRACT
A surveillance camera having a housing with top and bottom walls, opposed side walls, and front and rear walls; and a lens mount and shutter means positioned in the housing adjacent to the front wall thereof. The camera has a horizontally extending wall in the housing spaced rearwardly of the lens mount and shutter means, intermediate the top and bottom walls, providing a magazine chamber and a drive means chamber; an opening in a side wall of the housing for slidably receiving a film magazine in the magazine chamber, whereby the camera can be operatively positioned and maintained in close proximity with the ceiling of a bank or the like; a movable cover for said opening; a film magazine removable positioned in the magazine chamber and having a bottom wall and a front wall with an aperture therein to provide an exposure location for film, and including first and second film spools, a film positioning assembly adjacent the front wall, and film guide means for guiding film from the first spool, past the exposure location and film positioning assembly, and onto the second spool; an electric motor and drive means actuated thereby provided in the drive means chamber for effecting rotation of the shutter and movement of the film in timed relationship, for admitting light to the exposure location at predetermined intervals; and means for maintaining the film magazine in the magazine chamber at a fixed position relative to the lens mount.
A surveillance camera having a housing with top and bottom walls, opposed side walls, and front and rear walls; and a lens mount and shutter means positioned in the housing adjacent to the front wall thereof. The camera has a horizontally extending wall in the housing spaced rearwardly of the lens mount and shutter means, intermediate the top and bottom walls, providing a magazine chamber and a drive means chamber; an opening in a side wall of the housing for slidably receiving a film magazine in the magazine chamber, whereby the camera can be operatively positioned and maintained in close proximity with the ceiling of a bank or the like; a movable cover for said opening; a film magazine removable positioned in the magazine chamber and having a bottom wall and a front wall with an aperture therein to provide an exposure location for film, and including first and second film spools, a film positioning assembly adjacent the front wall, and film guide means for guiding film from the first spool, past the exposure location and film positioning assembly, and onto the second spool; an electric motor and drive means actuated thereby provided in the drive means chamber for effecting rotation of the shutter and movement of the film in timed relationship, for admitting light to the exposure location at predetermined intervals; and means for maintaining the film magazine in the magazine chamber at a fixed position relative to the lens mount.
Description
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SIDE LOAD SURVEILLA~CE CAMERA
BACKGROUND OF THE INVENTION
Cameras containing motor driven rolls of film are extensively used at the present time for making permanent records of activities, such as a bank hold-up or the like. Typically, picture taking is controlled from a position remote from the camera, as by a push button or an alarm switch, and the camera itselfis positioned in an out of the way location, often at the ceiling in a corner of the area under surveillance so as to be out of the way and to have a relatively unobstructed view of the area.
A number of problems have been encountered in the past in the utiliPation of such cameras. Because of the remote and often cramped location of the camera, there have been difficulties in changing film and in changing lenses. Also, prior film cartridges have relatively small capacity, thereby limiting the amount of activity which can be recorded at any one event. The cameras remain unattended for a long period of time and while reliable recording of a hold-up or the like is necessary, at the same time low cost and simplicity of construction are desirable features of a commercially sati~qfactory camera.
Accordingly, it is an object of the present invention to provide a new and improved surveillance camera which overcomes these and other problems, and in particular,to provide a camera which can be serviced while operatively positioned in close proximity with the ceiling of a bank or the like, which is reliable ,"~
. . .
3~3~
while being relatively inexpensive, and which has a large film capacity. Other objects, advantages, and features will more fully appear in the course of the following description.
SUMMARY OF THE_INVENTION
In a broad aspect, the present invention relates to a surveillance camera having a housing with top and bottom walls, opposed side walls, and front and rear walls; and a lens mount and shutter means positioned in the housing adjacent to the front wall thereof; characterized by: a horizontally extending wall in the housing spaced rearwardly of the lens mount and shutter means, intermediate the top and bottom walls, providing a magazine chamber and a drive means chamber; an opening in a side wall of the housing for slidably receiving a film magazine in the magazine chamber, whereby the camera can be operatively positioned and maintained in close proximity with the ceiling of a bank or the like; a movable cover for said opening: a film magazine removably positioned in the magazine chamber, said film magaæine having a bottom wall and a front wall with an aperture therein to provide an exposure location for film, and including first and second film spools, a film positioning assembly adjacent the Eront wall, and film guide means for guiding film from said first spool, past said exposure location and film positioning assembly, and onto said second spool; an electric motor and drive means actuated thereby provided in said drive means chamber for effecting rotation of the shutter and movement of ,,-. ,, , .:
SIDE LOAD SURVEILLA~CE CAMERA
BACKGROUND OF THE INVENTION
Cameras containing motor driven rolls of film are extensively used at the present time for making permanent records of activities, such as a bank hold-up or the like. Typically, picture taking is controlled from a position remote from the camera, as by a push button or an alarm switch, and the camera itselfis positioned in an out of the way location, often at the ceiling in a corner of the area under surveillance so as to be out of the way and to have a relatively unobstructed view of the area.
A number of problems have been encountered in the past in the utiliPation of such cameras. Because of the remote and often cramped location of the camera, there have been difficulties in changing film and in changing lenses. Also, prior film cartridges have relatively small capacity, thereby limiting the amount of activity which can be recorded at any one event. The cameras remain unattended for a long period of time and while reliable recording of a hold-up or the like is necessary, at the same time low cost and simplicity of construction are desirable features of a commercially sati~qfactory camera.
Accordingly, it is an object of the present invention to provide a new and improved surveillance camera which overcomes these and other problems, and in particular,to provide a camera which can be serviced while operatively positioned in close proximity with the ceiling of a bank or the like, which is reliable ,"~
. . .
3~3~
while being relatively inexpensive, and which has a large film capacity. Other objects, advantages, and features will more fully appear in the course of the following description.
SUMMARY OF THE_INVENTION
In a broad aspect, the present invention relates to a surveillance camera having a housing with top and bottom walls, opposed side walls, and front and rear walls; and a lens mount and shutter means positioned in the housing adjacent to the front wall thereof; characterized by: a horizontally extending wall in the housing spaced rearwardly of the lens mount and shutter means, intermediate the top and bottom walls, providing a magazine chamber and a drive means chamber; an opening in a side wall of the housing for slidably receiving a film magazine in the magazine chamber, whereby the camera can be operatively positioned and maintained in close proximity with the ceiling of a bank or the like; a movable cover for said opening: a film magazine removably positioned in the magazine chamber, said film magaæine having a bottom wall and a front wall with an aperture therein to provide an exposure location for film, and including first and second film spools, a film positioning assembly adjacent the Eront wall, and film guide means for guiding film from said first spool, past said exposure location and film positioning assembly, and onto said second spool; an electric motor and drive means actuated thereby provided in said drive means chamber for effecting rotation of the shutter and movement of ,,-. ,, , .:
2(a) the film in timed relationship, for admitting light to the exposure location at predetermined intervals; and means for maintaining the film magazine in the magazine chamber at a fixed position relative to the lens mount comprising transversely extending, interengaging tongue and groove components carried by the film magazine and a wall of the housing.
The camera drive system preferably includes a drive chain coupling gears on the motor, shutter and film drive shafts for positive conkrol of operation, along with a cam, cam follower and switch actuated by one of the drive shafts for stopping shutter and film motion at a predetermined location. The film magazine preferably includes a sprocket for positive advance of film along with a belt for driving the film take up spool from the sprocket within the magazine.
. _ -, 3~
BRIEF DESCRIPTION OF THE DRAWINGS
. . _ Yig. 1 is a perspective view of a camera incorporating the presently preferred embodiment of the invention and illus-trating the loading of a film magazine;
Fig. 2 is a side view of the camera of Fig. 1;
Fig. 3 is a sectional ~iew taken along the line 3-3 of Fig. 2;
Fig. 4 is an enlarged sectional view taken along the line 4-4 of Fig. 3;
Fig, 5 is an enlarged sectional view taXen along the line 5-5 of Fig. 4;
Fig. 6 is a sectional view taken along the line 6-6 of Fig. 4;
Fig. 7 is a sectional view taken along the line 7-7 of Fig. 4i Fig. 8 is partial top view of the film magazine of Fig. 1 taken,partially in section; and Fig. 9 is a sectional view taken along the line 9-9 of Fig. 8.
DESCRIPTION OF THE PREFERRED EMBODIMENT
._ . ,.. . --In Fig. 1, a camera 10 is shown installed on a mounting bracket 11, with a film magazine 12 positioned for insertion into the camera through an opening closed by a door 13.
The camera is enclosed in a housing or case 15 com-prising a top 16, a bottom 17, a back 18, and sides 19, 20. The components of the housing typically are plastic moldings which are joined together to form the housing, with a main frame 21 for the camera mechanism supported on internally molded pillars 22 in the housing bottom 17.
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A rib 25 projects rearwardly from the bottom 17 and includes an opening 26 for attachment to the mounting bracket 11.
The door 13 is mounted in the side 20 by means of a hinge 27 and includes a conventional fastener 28 for maintaining the door closed. The magazine 12 is slideably inserted into and removed from the housingl and the main frame 21 and magazine includes interengaging means for positioning the magazine in the camera.
Typically these comprise a transverse rib 31 projecting upward from the main frame 21 and a mating transverse groove 32 in the lower side of the magazine. A screw 34 is carried in the bottom 17 and is pulled downward to disengage the magazine drive for removing the magazine.
~ removable front cover 37 is attached to the housing, typically hy screws and includes a transparent window 38. A
door 39 is provided in a side of the front cover 37 to permit access to the interior for the setting of the lens enclosed by the cover.
An electric motor 43 is mounted on a reduction unit 44 which in turn is mounted on the under side of the main frame 21.
Shaft assemblies 45, 46 and 47 are journaled between a plate 48' and the main frame 21, as best seen in Fig. 5. Shaft assembly 45 carries a spur gear 48 and a bevel gear 49, with the bevel gear 4g engaging another bevel gear 50 mounted on a shaft 51 which carries a shutter 52 (Fig. 6). The shutter shaft 51 is journaled in a vertically disposed shutter plate 55 carried at the forward end of the main frame 21. The shutter plate 55 includes the shroud 56 partially enclosing the shutter 52, and a lens mount 57 is attached to the shroud and provides for threaded insertion of a lens 58.
The shaft assembly 46 includes another spur gear 61 disposed opposite the gear 48 of shaft assembly 45, and a gear 62 positioned for engaging a gear 63 on the shaft assembly 47. The shaft assembly 46 also carries a cam 64 which engages a cam ~ollower 65 for actuating an electrical switch 66 (Fig. 6).
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The shaft assembly 47 includes a film sprocket drive head 69 which slides axially on the shaft and which is urged upward to engage a sprocket 70 in the film magazine by a spring 71, with upward movement being limited by a transverse pin 72 carried on a shaft 73 and engaging a groove 74 in the head 69. A
threaded hole is provided in the lower end of the shaft 73 for accepting the upper end of the screw 34. Hence when the screw 34 and shaft 73 are manually pulled downward, the transverse pin 72 pulls the head 69 down out of engagement with the sprocket 70 of the magazine.
The magazine 12 has a case 79 closed by a cover 80 with an opening 81 at the front of the magazine and a pull ring 82 at one side for ease of removal of the magazine from the camera. A
film supply spool 83 and a film take up spool 84 are mounted for rotation about vertical shafts supported from the case 79. Film travels from the spool 83 past a guide post 85, around an idler roller 86 and the sprocket 70 onto the spool 84. The sprocket 70 has a double row of teeth for engaging the film and driving the ; film in a conventional manner. The take up spool 84 is driven from the film sprocket 70 by a belt 88 which rides in aligned grooves on the film sprocket and take up spool.
The shutter and the film sprocket have a positive drive obtained by a drive chain 91 connecting a gear 92 on the output shaft of the gear reduction unit 44 and the gears 48 and 61. This type of drive provides synchronized control between the film advance and the shutter rotation. In contrast, the belt drive between the film sprocket 70 and the take up spool 84 provides the required slippage since film is being advanced at a fixed rate by the film sprocket while the radius of the coil of film on the take 30 up spool increases.
In the magazine, a film positioning assembly 95 is positioned between the idler roller 86 and the film sprocket 70.
The idler roller 86 rotates on a shaft 96, with the upper end of this shaft 96 and the upper end of the sprocket 70 positioned in a :~Z~382 ,,.
top plate 97. A film backup plate 98 is positioned between the top plate 97 and the case 79 of the magazine and is attached by screws 99 passing through slots in the top plate 97 and by screws 100 passing through slots in the case 79. With this arrangement, the exact position of the backup plate 98 with respect to the magazine guide groove 32 can be precisely set at the time of manufacture of the magazine. This arrangement provides control of the distance between the lens and the film, without requiring precise control of tolerances in manufacture of the various co~ponents of the camera and magazineO
A film pressure unit 103 is positioned in front of the backup plate 98, sliding in groo~es 104 in the magazine case. The pressure unit 103 comprlses a front plate 105 and a pressure plate 106 joined by springs 107. With this arrangement, the film moves between the pressure plate 106 and the backup plate 98, with the film being held in position against the backup plate.
In operation, unexposed film is installed in a magazine on the spool 83 and is threaded through the film positioning assembly and onto the spool 84. The cover is placed on the magazine and the magazine is inserted into the camera. Inter-engagement of the guide rib and guide groove precisely position the film with respect tb the lens so that the image formed by the lens is in focus.
The motor in the camera is connected to an electric power source through the switch 66 which is normally in the open circuit condition. An alarm switch is positioned externally of the camera for actuation by personnel who wish to actuate the camera. This alarm switch provides an electrical bypass around the switch 66. When the motor i5 energized by the alarm switch, the shutter is rotated to expose film through the lens, the slot 110 in the rotating shutter and the openings in the pressure unit 103. The film is advanced by rotation of the sprocket, and camera action continues so long as the external alarm switch is maintained closed. Motor operation also rotates the cam 64 so . .
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- tha~ the high surface of the cam engages the cam follower/to close the switch 66 and continue motor operation after the alarm switch is opened, with the motor running until a time when the shutter slot is away from the film. At this stage of the operation, the low portion of the cam is engaging the cam follower permitting the switch 66 to open and shut off power to the motor.
The magazine with the exposed film is easily removed by opening the side door 13, pulling down on the external screw 34, and pulling the magazine out. A new magazine can be inserted at the same time and the camera is ready for further use. When desired, the lens can be changed, such as to provide a different field of view, by removing the front cover, unscrewiny the first lens, screwing in the new lens, and replacing the cover. Tnis does not re~uire refocusing, since the distance between the lens mount and the film is maintained fixed. This lens changing operation can be accomplished from the front end of the camera without requiring removal of the camera from the mount or any other motion of the camera.
I'he magazine of the camera is capable of handling a 2Q substantial quantity of film. The specific embodiment illustrated will handle 150 feet of 35mm film, and provide 1200 frames of pictures. With the magazine and camera configuxation, the 35mm film travels horiæontally. This enables the camera to provide 1.4 inches of picture as compared with 0O9 inches of picture obtained in the prior art camera. In the embodiment illustrated, the motor is arranged for being powered from an ac source and is running continuously when the alarm switch is closed. In an a:Lternative configuration, a dc source may be utilized in conjunction with a stepper motor for driving the film.
The camera drive system preferably includes a drive chain coupling gears on the motor, shutter and film drive shafts for positive conkrol of operation, along with a cam, cam follower and switch actuated by one of the drive shafts for stopping shutter and film motion at a predetermined location. The film magazine preferably includes a sprocket for positive advance of film along with a belt for driving the film take up spool from the sprocket within the magazine.
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BRIEF DESCRIPTION OF THE DRAWINGS
. . _ Yig. 1 is a perspective view of a camera incorporating the presently preferred embodiment of the invention and illus-trating the loading of a film magazine;
Fig. 2 is a side view of the camera of Fig. 1;
Fig. 3 is a sectional ~iew taken along the line 3-3 of Fig. 2;
Fig. 4 is an enlarged sectional view taken along the line 4-4 of Fig. 3;
Fig, 5 is an enlarged sectional view taXen along the line 5-5 of Fig. 4;
Fig. 6 is a sectional view taken along the line 6-6 of Fig. 4;
Fig. 7 is a sectional view taken along the line 7-7 of Fig. 4i Fig. 8 is partial top view of the film magazine of Fig. 1 taken,partially in section; and Fig. 9 is a sectional view taken along the line 9-9 of Fig. 8.
DESCRIPTION OF THE PREFERRED EMBODIMENT
._ . ,.. . --In Fig. 1, a camera 10 is shown installed on a mounting bracket 11, with a film magazine 12 positioned for insertion into the camera through an opening closed by a door 13.
The camera is enclosed in a housing or case 15 com-prising a top 16, a bottom 17, a back 18, and sides 19, 20. The components of the housing typically are plastic moldings which are joined together to form the housing, with a main frame 21 for the camera mechanism supported on internally molded pillars 22 in the housing bottom 17.
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A rib 25 projects rearwardly from the bottom 17 and includes an opening 26 for attachment to the mounting bracket 11.
The door 13 is mounted in the side 20 by means of a hinge 27 and includes a conventional fastener 28 for maintaining the door closed. The magazine 12 is slideably inserted into and removed from the housingl and the main frame 21 and magazine includes interengaging means for positioning the magazine in the camera.
Typically these comprise a transverse rib 31 projecting upward from the main frame 21 and a mating transverse groove 32 in the lower side of the magazine. A screw 34 is carried in the bottom 17 and is pulled downward to disengage the magazine drive for removing the magazine.
~ removable front cover 37 is attached to the housing, typically hy screws and includes a transparent window 38. A
door 39 is provided in a side of the front cover 37 to permit access to the interior for the setting of the lens enclosed by the cover.
An electric motor 43 is mounted on a reduction unit 44 which in turn is mounted on the under side of the main frame 21.
Shaft assemblies 45, 46 and 47 are journaled between a plate 48' and the main frame 21, as best seen in Fig. 5. Shaft assembly 45 carries a spur gear 48 and a bevel gear 49, with the bevel gear 4g engaging another bevel gear 50 mounted on a shaft 51 which carries a shutter 52 (Fig. 6). The shutter shaft 51 is journaled in a vertically disposed shutter plate 55 carried at the forward end of the main frame 21. The shutter plate 55 includes the shroud 56 partially enclosing the shutter 52, and a lens mount 57 is attached to the shroud and provides for threaded insertion of a lens 58.
The shaft assembly 46 includes another spur gear 61 disposed opposite the gear 48 of shaft assembly 45, and a gear 62 positioned for engaging a gear 63 on the shaft assembly 47. The shaft assembly 46 also carries a cam 64 which engages a cam ~ollower 65 for actuating an electrical switch 66 (Fig. 6).
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The shaft assembly 47 includes a film sprocket drive head 69 which slides axially on the shaft and which is urged upward to engage a sprocket 70 in the film magazine by a spring 71, with upward movement being limited by a transverse pin 72 carried on a shaft 73 and engaging a groove 74 in the head 69. A
threaded hole is provided in the lower end of the shaft 73 for accepting the upper end of the screw 34. Hence when the screw 34 and shaft 73 are manually pulled downward, the transverse pin 72 pulls the head 69 down out of engagement with the sprocket 70 of the magazine.
The magazine 12 has a case 79 closed by a cover 80 with an opening 81 at the front of the magazine and a pull ring 82 at one side for ease of removal of the magazine from the camera. A
film supply spool 83 and a film take up spool 84 are mounted for rotation about vertical shafts supported from the case 79. Film travels from the spool 83 past a guide post 85, around an idler roller 86 and the sprocket 70 onto the spool 84. The sprocket 70 has a double row of teeth for engaging the film and driving the ; film in a conventional manner. The take up spool 84 is driven from the film sprocket 70 by a belt 88 which rides in aligned grooves on the film sprocket and take up spool.
The shutter and the film sprocket have a positive drive obtained by a drive chain 91 connecting a gear 92 on the output shaft of the gear reduction unit 44 and the gears 48 and 61. This type of drive provides synchronized control between the film advance and the shutter rotation. In contrast, the belt drive between the film sprocket 70 and the take up spool 84 provides the required slippage since film is being advanced at a fixed rate by the film sprocket while the radius of the coil of film on the take 30 up spool increases.
In the magazine, a film positioning assembly 95 is positioned between the idler roller 86 and the film sprocket 70.
The idler roller 86 rotates on a shaft 96, with the upper end of this shaft 96 and the upper end of the sprocket 70 positioned in a :~Z~382 ,,.
top plate 97. A film backup plate 98 is positioned between the top plate 97 and the case 79 of the magazine and is attached by screws 99 passing through slots in the top plate 97 and by screws 100 passing through slots in the case 79. With this arrangement, the exact position of the backup plate 98 with respect to the magazine guide groove 32 can be precisely set at the time of manufacture of the magazine. This arrangement provides control of the distance between the lens and the film, without requiring precise control of tolerances in manufacture of the various co~ponents of the camera and magazineO
A film pressure unit 103 is positioned in front of the backup plate 98, sliding in groo~es 104 in the magazine case. The pressure unit 103 comprlses a front plate 105 and a pressure plate 106 joined by springs 107. With this arrangement, the film moves between the pressure plate 106 and the backup plate 98, with the film being held in position against the backup plate.
In operation, unexposed film is installed in a magazine on the spool 83 and is threaded through the film positioning assembly and onto the spool 84. The cover is placed on the magazine and the magazine is inserted into the camera. Inter-engagement of the guide rib and guide groove precisely position the film with respect tb the lens so that the image formed by the lens is in focus.
The motor in the camera is connected to an electric power source through the switch 66 which is normally in the open circuit condition. An alarm switch is positioned externally of the camera for actuation by personnel who wish to actuate the camera. This alarm switch provides an electrical bypass around the switch 66. When the motor i5 energized by the alarm switch, the shutter is rotated to expose film through the lens, the slot 110 in the rotating shutter and the openings in the pressure unit 103. The film is advanced by rotation of the sprocket, and camera action continues so long as the external alarm switch is maintained closed. Motor operation also rotates the cam 64 so . .
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- tha~ the high surface of the cam engages the cam follower/to close the switch 66 and continue motor operation after the alarm switch is opened, with the motor running until a time when the shutter slot is away from the film. At this stage of the operation, the low portion of the cam is engaging the cam follower permitting the switch 66 to open and shut off power to the motor.
The magazine with the exposed film is easily removed by opening the side door 13, pulling down on the external screw 34, and pulling the magazine out. A new magazine can be inserted at the same time and the camera is ready for further use. When desired, the lens can be changed, such as to provide a different field of view, by removing the front cover, unscrewiny the first lens, screwing in the new lens, and replacing the cover. Tnis does not re~uire refocusing, since the distance between the lens mount and the film is maintained fixed. This lens changing operation can be accomplished from the front end of the camera without requiring removal of the camera from the mount or any other motion of the camera.
I'he magazine of the camera is capable of handling a 2Q substantial quantity of film. The specific embodiment illustrated will handle 150 feet of 35mm film, and provide 1200 frames of pictures. With the magazine and camera configuxation, the 35mm film travels horiæontally. This enables the camera to provide 1.4 inches of picture as compared with 0O9 inches of picture obtained in the prior art camera. In the embodiment illustrated, the motor is arranged for being powered from an ac source and is running continuously when the alarm switch is closed. In an a:Lternative configuration, a dc source may be utilized in conjunction with a stepper motor for driving the film.
Claims (7)
1. A surveillance camera having a housing with top and bottom walls, opposed side walls, and front and rear walls; and a lens mount and shutter means positioned in the housing adjacent to the front wall thereof; characterized by:
a horizontally extending wall in the housing spaced rearwardly of the lens mount and shutter means, intermediate the top and bottom walls, providing a magazine chamber and a drive means chamber;
an opening in a side wall of the housing for slidably receiving a film magazine in the magazine chamber, whereby the camera can be operatively positioned and maintained in close proximity with the ceiling of a bank or the like;
a movable cover for said opening;
a film magazine removably positioned in the magazine chamber, said film magazine having a bottom wall and a front wall with an aperture therein to provide an exposure location for film, and including first and second film spools, a film positioning assembly adjacent the front wall, and film guide means for guiding film from said first spool, past said exposure location and film positioning assembly, and onto said second spool;
an electric motor and drive means actuated thereby provided in said drive means chamber for effecting rotation of the shutter and movement of the film in timed relationship, for admitting light to the exposure location at predetermined intervals; and means for maintaining the film magazine in the magazine chamber at a fixed position relative to the lens mount comprising transversely extending, interengaging tongue and groove components carried by the film magazine and a wall of the housing.
a horizontally extending wall in the housing spaced rearwardly of the lens mount and shutter means, intermediate the top and bottom walls, providing a magazine chamber and a drive means chamber;
an opening in a side wall of the housing for slidably receiving a film magazine in the magazine chamber, whereby the camera can be operatively positioned and maintained in close proximity with the ceiling of a bank or the like;
a movable cover for said opening;
a film magazine removably positioned in the magazine chamber, said film magazine having a bottom wall and a front wall with an aperture therein to provide an exposure location for film, and including first and second film spools, a film positioning assembly adjacent the front wall, and film guide means for guiding film from said first spool, past said exposure location and film positioning assembly, and onto said second spool;
an electric motor and drive means actuated thereby provided in said drive means chamber for effecting rotation of the shutter and movement of the film in timed relationship, for admitting light to the exposure location at predetermined intervals; and means for maintaining the film magazine in the magazine chamber at a fixed position relative to the lens mount comprising transversely extending, interengaging tongue and groove components carried by the film magazine and a wall of the housing.
2. A surveillance camera as described in Claim 1, wherein the film positioning assembly is manually adjustable relative to the front wall of the magazine and includes a film backup plate and a film pressure plate, with the film moving between said plates and with the pressure plate yieldably urging the film against the backup plate.
3. A surveillance camera as described in claim 2, wherein the position of the film backup plate is adjustable relative to the front wall of the magazine, to achieve a fixed relationship between the lens mount and the film when the latter is against the backup plate.
4. A surveillance camera as described in claim 3, wherein the film backup plate is adjustably supported between the bottom wall of the film magazine and a top plate which is fixed relative to the front wall of the film magazine.
5. A surveillance camera as described in Claim 4, wherein one end of said top plate receives the shaft of an idler roller of the film guide means, and the other end receives the shaft of a film engaging sprocket, and said backup plate extends between said roller and said sprocket.
6. A surveillance camera as described in Claim 1, wherein the film positioning assembly includes;
a film backup plate adjustably supported adjacent the front wall of the film magazine; and a film pressure unit comprising a front plate supported by the front wall of the film magazine and carrying a film pressure plate yieldably biased toward the film backup plate, whereby said pressure plate urges the film between the backup plate as the film moves therebetween.
a film backup plate adjustably supported adjacent the front wall of the film magazine; and a film pressure unit comprising a front plate supported by the front wall of the film magazine and carrying a film pressure plate yieldably biased toward the film backup plate, whereby said pressure plate urges the film between the backup plate as the film moves therebetween.
7. A surveillance camera as described in Claim 6, wherein the aperture in the front wall of the film magazine is open at the top to provide opposed side edges which contain vertically extending slots therein for slidably and removably receiving the side edges of the front plate of said film pressure unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82802986A | 1986-02-10 | 1986-02-10 | |
| US06/828,029 | 1986-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1292382C true CA1292382C (en) | 1991-11-26 |
Family
ID=25250753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000528627A Expired - Lifetime CA1292382C (en) | 1986-02-10 | 1987-01-30 | Side load surveillance camera |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS62187335A (en) |
| KR (1) | KR900001579B1 (en) |
| CN (1) | CN1005222B (en) |
| AU (1) | AU595582B2 (en) |
| CA (1) | CA1292382C (en) |
| DE (1) | DE3703921A1 (en) |
| ES (1) | ES2006470A6 (en) |
| FR (1) | FR2594237A1 (en) |
| GB (1) | GB2186383B (en) |
| MX (1) | MX168963B (en) |
| SE (1) | SE461483B (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2353154A (en) * | 1943-04-22 | 1944-07-11 | Herman J Fowler | Photographic apparatus for making periodic time-recorded exposures |
| JPS4313508Y1 (en) * | 1967-03-17 | 1968-06-08 | ||
| US3606527A (en) * | 1969-02-17 | 1971-09-20 | Dressen Barnes Electronics Cor | Intermittent drive for surveillance camera |
| DE7106951U (en) * | 1971-02-25 | 1971-11-04 | Kodak Ag | PHOTOGRAPHIC OR KINEMATOGRAPHIC CAMERA WITH A CASSETTE LIFT |
| DE7307005U (en) * | 1973-02-23 | 1973-05-24 | Agfa Gevaert Ag | KINEMATOGRAPHIC OR PHOTOGRAPHIC CAMERA |
| US3807841A (en) * | 1973-02-28 | 1974-04-30 | Eastman Kodak Co | Door assembly for a motion picture camera |
| US4222650A (en) * | 1978-03-07 | 1980-09-16 | American Electronics, Inc. | Automatic camera |
| FR2452727A3 (en) * | 1979-03-30 | 1980-10-24 | Vannet Gresset Germaine | Cassette for loading cine camera - has film reel spools in lower part with cut away sides and upper part with sides forming cover |
| US4222648A (en) * | 1979-07-31 | 1980-09-16 | American Electronics, Inc. | Film advance control mechanism |
| JPS58107524A (en) * | 1981-12-22 | 1983-06-27 | Olympus Optical Co Ltd | Camera |
| FR2525669A1 (en) * | 1982-04-23 | 1983-10-28 | Omera Segid | SECURITY LOCKING DEVICE FOR A BOX COVER, CAMERA CHARGER AND CAMERA USING SUCH A DEVICE |
-
1987
- 1987-01-30 CA CA000528627A patent/CA1292382C/en not_active Expired - Lifetime
- 1987-02-06 AU AU68567/87A patent/AU595582B2/en not_active Ceased
- 1987-02-06 GB GB8702724A patent/GB2186383B/en not_active Expired
- 1987-02-09 SE SE8700486A patent/SE461483B/en not_active IP Right Cessation
- 1987-02-09 JP JP62026516A patent/JPS62187335A/en active Pending
- 1987-02-09 KR KR1019870001020A patent/KR900001579B1/en not_active Expired
- 1987-02-09 CN CN87100636.7A patent/CN1005222B/en not_active Expired
- 1987-02-09 DE DE19873703921 patent/DE3703921A1/en active Granted
- 1987-02-10 MX MX005199A patent/MX168963B/en unknown
- 1987-02-10 FR FR8701633A patent/FR2594237A1/en not_active Withdrawn
- 1987-02-10 ES ES878700330A patent/ES2006470A6/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3703921C2 (en) | 1989-05-11 |
| SE461483B (en) | 1990-02-19 |
| SE8700486D0 (en) | 1987-02-09 |
| SE8700486L (en) | 1987-08-11 |
| GB2186383A (en) | 1987-08-12 |
| GB8702724D0 (en) | 1987-03-11 |
| CN1005222B (en) | 1989-09-20 |
| KR900001579B1 (en) | 1990-03-15 |
| GB2186383B (en) | 1989-11-29 |
| JPS62187335A (en) | 1987-08-15 |
| AU595582B2 (en) | 1990-04-05 |
| DE3703921A1 (en) | 1987-08-13 |
| CN87100636A (en) | 1987-12-02 |
| FR2594237A1 (en) | 1987-08-14 |
| KR870008218A (en) | 1987-09-25 |
| MX168963B (en) | 1993-06-16 |
| ES2006470A6 (en) | 1989-05-01 |
| AU6856787A (en) | 1987-08-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |