GB351850A - Improvements in and relating to electric lamps - Google Patents
Improvements in and relating to electric lampsInfo
- Publication number
- GB351850A GB351850A GB29525/30A GB2952530A GB351850A GB 351850 A GB351850 A GB 351850A GB 29525/30 A GB29525/30 A GB 29525/30A GB 2952530 A GB2952530 A GB 2952530A GB 351850 A GB351850 A GB 351850A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- outer envelope
- oct
- inner envelope
- rubber
- 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
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
351,850. Illuminant enclosures. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Gordan, N. T. ; 135, Elmer Avenue, Schenectady, New York, U.S.A.) Oct. 2, 1930, No. 29525. Convention date, Oct. 2, 1929. [Class 75 (ii).] In a lamp for projection, medical, or other purposes in which an inner envelope containing the source of light is surrounded by a heat-absorbing liquid contained in an outer envelope, cooling means are immersed in the liquid. The source of light may comprise a closely coiled tungsten filament 14 operating at a high temperature in a gas such as argon at substantial pressure, the liquid 30 may be clear tap water, distilled water, or a solution of copper chloride, and the envelopes 12, 13 may be made of glass, quartz, or other transparent material. The outer envelope may be frosted. The cooling means may comprise a tube 27 formed as a series of bends, Fig. 2, partly or completely surrounding the upper portion of the inner envelope 13, or as a spiral, Fig. 3, through which tap water, air, or other cooling medium is adapted to circulate. A flange 17 on the outer envelope 12 is clamped between two rubber or other flexible gaskets 18 and two metal rings 19, 20. The ring 20 is fastened to the socket 15 by means of a collar and yoke device 25, and carries a rubber or other flexible collar 22 which engages the neck of the inner envelope 13.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US351850XA | 1929-10-02 | 1929-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB351850A true GB351850A (en) | 1931-07-02 |
Family
ID=21881162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29525/30A Expired GB351850A (en) | 1929-10-02 | 1930-10-02 | Improvements in and relating to electric lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB351850A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2860236A (en) * | 1955-05-05 | 1958-11-11 | Will F Wilson | Light fixture |
| US3369440A (en) * | 1966-02-07 | 1968-02-20 | John O. King Jr. | Lightweight fastener |
-
1930
- 1930-10-02 GB GB29525/30A patent/GB351850A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2860236A (en) * | 1955-05-05 | 1958-11-11 | Will F Wilson | Light fixture |
| US3369440A (en) * | 1966-02-07 | 1968-02-20 | John O. King Jr. | Lightweight fastener |
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