GB682670A - Improvements in or relating to photographic roll-film cameras - Google Patents
Improvements in or relating to photographic roll-film camerasInfo
- Publication number
- GB682670A GB682670A GB4938/49A GB493849A GB682670A GB 682670 A GB682670 A GB 682670A GB 4938/49 A GB4938/49 A GB 4938/49A GB 493849 A GB493849 A GB 493849A GB 682670 A GB682670 A GB 682670A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- roller
- casing
- disc
- dog
- 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
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
- D05B3/02—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for needle-bar movement
-
- 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
- G03B19/02—Still-picture cameras
- G03B19/04—Roll-film cameras
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B73/00—Casings
- D05B73/005—Doors or covers for accessing inner parts of the machine; Security devices therefor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Structure And Mechanism Of Cameras (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
682,670. Photographic roll-film cameras. CUNNINGHAM, V. Feb. 23, 1950 [Feb. 23, 1949], No. 4938/49. Class 98 (i). In film-feeding mechanism for a roll-film camera a film-feed control roller engaging the film, the circumference of which equals the frame displacement, carries a circular cam-disc having a single notch in its periphery engageable by a spring-pressed dog, and also has a pin upstanding from its surface so as to prick the film once on each rotation and thereby define an inter-frame line. The camera may have a number-counter stepped sequentially and photographed on the film at each film change. As shown, Fig. 4, a roll film holder for attachment to a camera comprises a casing 11 with a rectangular film window 12, which has its edges lined on the inside with velvet or plush and is covered by a plate 12 hinged within the casing. The front of the casing may be removed and plate 13 swung outward to place the supply spool 14 in the casing. The film 19 is led from spool 14 over a guide roller 15 at the hinged end of plate 13, over plate 13 and across window 12 to a guide roller 16, between roller 16 and a film-feed control roller 17 and thence over idler rollers to the take-up spool 18. Rollers 16, 17 are rubber-covered and grip film 19 between them, and carry meshing gears 20. Roller 17 also carries a disc 21, Fig. 6, having a notch into which is urged a dog 22 mounted on a rod 27 with a knob 23 which is pressed against action of a spring to free dog 22 from disc 21. This allows the film-winding to be started, after which dog 22 rides on disc 21 until roller 17 has made one revolution. Since the circumference of roller 17 equals the frame displacement, the film is advanced to expose the next frame without overlap or waste. Roller 17 also carries a pin which pricks the film to mark the divisions between frames. Movement of rod 27 also actuates a counter 26, Fig. 7, mounted on the casing wall, and opens a shutter 28 in an optical system comprising two reflectors and a lens 30 enclosed in a cylinder 31, whereby the numbers on the counter are sequentially photographed on the film.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE210322X | 1938-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB682670A true GB682670A (en) | 1952-11-12 |
Family
ID=5796759
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3186/39A Expired GB524468A (en) | 1938-01-29 | 1939-01-30 | Improvements in and relating to zig-zag sewing machines with suspended needle oscillating frames |
| GB4938/49A Expired GB682670A (en) | 1938-01-29 | 1949-02-23 | Improvements in or relating to photographic roll-film cameras |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3186/39A Expired GB524468A (en) | 1938-01-29 | 1939-01-30 | Improvements in and relating to zig-zag sewing machines with suspended needle oscillating frames |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH210322A (en) |
| GB (2) | GB524468A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2943542A (en) * | 1956-05-14 | 1960-07-05 | Irwin M Bloomfield | Roll film adapter |
-
1939
- 1939-01-10 CH CH210322D patent/CH210322A/en unknown
- 1939-01-30 GB GB3186/39A patent/GB524468A/en not_active Expired
-
1949
- 1949-02-23 GB GB4938/49A patent/GB682670A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2943542A (en) * | 1956-05-14 | 1960-07-05 | Irwin M Bloomfield | Roll film adapter |
Also Published As
| Publication number | Publication date |
|---|---|
| CH210322A (en) | 1940-07-15 |
| GB524468A (en) | 1940-08-07 |
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