GB931805A - Improvements in or relating to film drive mechanism for photographic cameras - Google Patents
Improvements in or relating to film drive mechanism for photographic camerasInfo
- Publication number
- GB931805A GB931805A GB781559A GB781559A GB931805A GB 931805 A GB931805 A GB 931805A GB 781559 A GB781559 A GB 781559A GB 781559 A GB781559 A GB 781559A GB 931805 A GB931805 A GB 931805A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheel
- shutter
- film
- output
- speed
- 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
Links
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
- G03B41/00—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
- G03B41/02—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film
- G03B41/023—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film combined with shutter
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Retarders (AREA)
Abstract
931,805. Cameras for aerial photography. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 25, 1960 [March 6, 1959], No. 7815/59. Class 98 (1). [Also in Group XXIV] In a motor-driven camera for aerial photography, the film is driven by a sun wheel forming the output member of a differential coupling including an input sun member driven at constant speed by the motor and coupled to the output member by at least one planetary member on a carrier, the latter deriving variable rotary movement from the input member through a cam mechanism including a gear and pin-and-slot connection to the carrier to produce sinusoidal variation in the output so that the film-drive speed has the appropriate value, when the shutter is open, to compensate for image movement. As shown in Figs. 1 and 2, the input sprocket 12 drives, via idler gear 13, a sun wheel 16 whose larger diameter sprocket drives wheel 24, whereby the cage 20 (21) is oscillated by means of a slot 22 and eccentric pin 23, and whose smaller diameter sprocket is bevelled and engages a pair of bevelled wheels 18, 19, rotatably mounted on and rotatable with the cage 20 and thus transmitting a sinusoidallyvarying speed of rotation to the output sun wheel 17. This is geared to the film-drive sprocket 25 so that a predetermined speed of film movement can be obtained at the instant of exposure according to what part of the cycle is coincident with the opening of the shutter. The amplitude of variation in the drive to wheel 17 may be varied by setting pin 23 at various radial distances from the centre of wheel 24, and the direction of the slot 22 is so chosen that the speed of rotation of the output wheel 17 has a particular value when the shutter is open, the shutter mechanism (not shown) being operated directly by the rotation of input sprocket 12. The shutter may be of the slotted bling type and its motion may be parallel with or transverse to the direction of film feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB781559A GB931805A (en) | 1959-03-06 | 1959-03-06 | Improvements in or relating to film drive mechanism for photographic cameras |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB781559A GB931805A (en) | 1959-03-06 | 1959-03-06 | Improvements in or relating to film drive mechanism for photographic cameras |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB931805A true GB931805A (en) | 1963-07-17 |
Family
ID=9840289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB781559A Expired GB931805A (en) | 1959-03-06 | 1959-03-06 | Improvements in or relating to film drive mechanism for photographic cameras |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB931805A (en) |
-
1959
- 1959-03-06 GB GB781559A patent/GB931805A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1306421A (en) | Camera having a film rewinding mechanism | |
| JPS55103545A (en) | Motor driven camera | |
| GB931805A (en) | Improvements in or relating to film drive mechanism for photographic cameras | |
| US3906527A (en) | Shaft drive and control system for automatic camera | |
| US2333768A (en) | Aerial camera | |
| US3744387A (en) | Camera with apparent image motion and direction compensation | |
| GB1293040A (en) | Device for driving reflecting mirror of single-lens reflex camera | |
| US1934514A (en) | Optical film-copying machine | |
| US3225875A (en) | One revolution clutch apparatus | |
| US3148606A (en) | Focal plane shutter mechanism | |
| US1534326A (en) | Moving-picture projector | |
| GB1328593A (en) | Motion picture camera mechanisms | |
| GB1061722A (en) | Improvements in or relating to motion picture projections with automatic loop-forming mechanism | |
| GB1395374A (en) | Drive mechanism for a photographic camera | |
| GB1430104A (en) | Camera shutter | |
| JPS55103544A (en) | Driving power transmitting device of motor driven camera | |
| US1818432A (en) | Cinematographic projecting apparatus | |
| GB755217A (en) | Improvements relating to photographic panoramic roll-film cameras | |
| GB1216906A (en) | Film projector | |
| US2434518A (en) | Motion-picture projector | |
| GB1128063A (en) | A film feed mechanism for a sub-standard motion-picture projector | |
| ES300844A1 (en) | Device for motion picture projection by means of a rotating prism provided with shutter | |
| GB1431197A (en) | Film pull-down mechanism for motion picture apparatus | |
| JPS57111523A (en) | Mirror mechanism of single-lens reflex camera | |
| SU760016A1 (en) | Motion-picture camera |