GB496363A - Improvements in or relating to photographic flashlights - Google Patents
Improvements in or relating to photographic flashlightsInfo
- Publication number
- GB496363A GB496363A GB8558/38A GB855838A GB496363A GB 496363 A GB496363 A GB 496363A GB 8558/38 A GB8558/38 A GB 8558/38A GB 855838 A GB855838 A GB 855838A GB 496363 A GB496363 A GB 496363A
- Authority
- GB
- United Kingdom
- Prior art keywords
- container
- window
- flashlights
- lenses
- box
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
- F21K5/02—Light sources using charges of combustible material, e.g. illuminating flash devices ignited in a non-disrupting container, e.g. photo-flash bulb
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
496,363. Flash - light lamps. SCHWARZE, P. March 21, 1938, No. 8558. Convention date, April 17, 1937. [Class 9 (ii)] Photographic flashlights of the type which produce light by reaction of suitable substances enclosed in gastight vessels have their lighting effect intensified by the combination therewith of one or more optical lenses. As shown in Fig. 1, the flashlamp 1 comprises a metal box 2 which is closed by a window 3 and is filled with oxidizable foils, or wires or the like and with oxygen gas. A frame 5 carrying a condenser lens 4 is secured to the box 2 by springy stirrups 6. Instead of a condenser lens, a similarly acting combination of two or more lenses may be used. Fig. 2 shows a modification in which a container 7, adapted to receive a gastight box-shaped flashlight lamp, is provided with a window 3 in front of which is arranged the lens 4. If desired, the window 3 may be omitted. The container is provided with a handle 8 which can be adapted for holding a battery for the ignition. Lenses, preferably of different focal length, may be arranged on both sides of the container for use at different ranges. The Specification as open to inspection under Sect. 91 comprises also arrangements in which the top part of the handle 8 instead of the container 7 is adapted to support the flashlight lamp and in which the container 7 is enlarged so as to be capable of receiving bulb-shaped flashlights. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE496363X | 1937-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB496363A true GB496363A (en) | 1938-11-29 |
Family
ID=6545026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8558/38A Expired GB496363A (en) | 1937-04-17 | 1938-03-21 | Improvements in or relating to photographic flashlights |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB496363A (en) |
-
1938
- 1938-03-21 GB GB8558/38A patent/GB496363A/en not_active Expired
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