GB459196A - Improvements in and relating to photographic cameras - Google Patents
Improvements in and relating to photographic camerasInfo
- Publication number
- GB459196A GB459196A GB22995/35A GB2299535A GB459196A GB 459196 A GB459196 A GB 459196A GB 22995/35 A GB22995/35 A GB 22995/35A GB 2299535 A GB2299535 A GB 2299535A GB 459196 A GB459196 A GB 459196A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shutter
- diaphragm
- resistance
- uniform
- pointer
- 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
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/04—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments
- D06B3/08—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments as hanks
-
- 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
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/04—Control effected by hand adjustment of a member that senses indication of a pointer of a built- in light-sensitive device, e.g. by restoring point to a fixed associated reference mark
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Exposure Control For Cameras (AREA)
- Measuring Volume Flow (AREA)
Abstract
459,196. Photographic cameras combined with exposure meters. ZEISS IKON AKT.-GES., 72, Schandauerstrasse, Dresden, Germany. Aug. 15, 1935, No. 22995. Convention date, Aug. 16, 1934. [Class 98 (i)] In a camera wherein a photo-electric exposure-meter is coupled with the diaphragm and shutter adjusting devices, the coupling includes a series of resistance elements having different specific resistances in order to correlate the scales of the meter and the devices adjusted. The elements may be formed of sprayed carbon dust. As shown, a photo-electric cell 7 and galvanometer 8 are connected to arms 3, 6 wiping over curved resistance members 2, 5 one having diaphragm graduations 1 and the other shutter-speed graduations 4. Movement of the pointer 3 sets the iris diaphragm of the objective, and movement of the pointer 6 sets the camera shutter. To allow for the non-uniform spacing of the diaphragm graduations, the resistance member 2 is built up of a series of parts 2a, 2b, 2c ... having increasing specific resistances. The shutter-speed scale 4 has uniform graduation and the resistance member 5 is of uniform resistance for use with diaphragm shutters ; but a modification is described for use with roller-blind shutters wherein the pointer 6 moves over a non-uniform shutter scale, and the resistance member 5 is graded, like the member 2. Other factors, such as plate or film speed, can be allowed for as described in Specification 442,409.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE459196X | 1912-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB459196A true GB459196A (en) | 1937-01-04 |
Family
ID=6539548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22995/35A Expired GB459196A (en) | 1934-08-16 | 1935-08-15 | Improvements in and relating to photographic cameras |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR459196A (en) |
| GB (1) | GB459196A (en) |
-
1913
- 1913-06-13 FR FR459196D patent/FR459196A/en not_active Expired
-
1935
- 1935-08-15 GB GB22995/35A patent/GB459196A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR459196A (en) | 1913-10-29 |
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