GB780000A - Improvements in or relating to roll-film photographic cameras - Google Patents
Improvements in or relating to roll-film photographic camerasInfo
- Publication number
- GB780000A GB780000A GB5462/57A GB546257A GB780000A GB 780000 A GB780000 A GB 780000A GB 5462/57 A GB5462/57 A GB 5462/57A GB 546257 A GB546257 A GB 546257A GB 780000 A GB780000 A GB 780000A
- Authority
- GB
- United Kingdom
- Prior art keywords
- knob
- film
- spring
- shutter
- pin
- 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
- G03B19/00—Cameras
- G03B19/02—Still-picture cameras
- G03B19/04—Roll-film cameras
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Cameras Including Film Mechanisms (AREA)
Abstract
780,000. Photographic roll-film cameras. KAMERABAU-ANSTALT. June 3, 1955 [May 6, 1955], No. 5462/57. Divided out of 779,999. Class 98(1) A roll-film photographic camera has a shutter-winding mechanism and a filmfeed mechanism which may be selectively coupled by an operating member, and a locking device which prevents movement of the shutter-winding mechanism when the film-feed mechanism is uncoupled after an incomplete feed movement of the operating member. As shown, the winding knob 1 is fast with a rotatable body 1<SP>1</SP> rotatably mounted on a shaft 2. The knob 1 and the body 1<SP>1</SP> are movable axially between two positions defined by a spring pressed ball 10 which engages one of two grooves 11, 12. In the lower position shown, rotation of the knob 1 is transmitted to the shaft 2 by a pin 5 which engages a bore in disc 3 fast with the shaft 2, said pin 5 also engaging a bore in a gear 6 which actuates the film feed sprocket. The shaft 2 is connected to the shutter winding mechanism directly, and to a film takeup spool through a slipping clutch. In its other position, knob 1 is connected only to disc 3, so that rotation of knob 1 sets the shutter without winding the film.. Means similar to those described in Specification 779,999 may lock the film winding mechanism meanwhile. A U-shaped locking spring 15 fits in a slot in a cylindrical sleeve 19, and if knob 1 is in its correct position when it is moved upwardly, a pin 13 mounted in the body 1<SP>1</SP> engages a lug 16 on the spring 15 so that it is lifted out of engagement with ratchet teeth 18 on the body 1<SP>1</SP>. If, however, the knob 1 is raised in any other position, the pin 13 will not engage the lug 16, and the ratchet teeth 18 will be engaged by the leading edge of the spring 15, thereby preventing movement of the knob. When the knob 1 is moved into its lower position again, the spring 15 is pushed down by a shoulder 1<SP>11</SP> on the body 1<SP>1</SP>.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE780000X | 1955-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB780000A true GB780000A (en) | 1957-07-24 |
Family
ID=6687334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5462/57A Expired GB780000A (en) | 1955-05-06 | 1955-06-03 | Improvements in or relating to roll-film photographic cameras |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB780000A (en) |
-
1955
- 1955-06-03 GB GB5462/57A patent/GB780000A/en not_active Expired
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