GB383165A - Improvements in electric lamps - Google Patents
Improvements in electric lampsInfo
- Publication number
- GB383165A GB383165A GB9798/32A GB979832A GB383165A GB 383165 A GB383165 A GB 383165A GB 9798/32 A GB9798/32 A GB 9798/32A GB 979832 A GB979832 A GB 979832A GB 383165 A GB383165 A GB 383165A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filament
- screen
- supported
- wires
- glass
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/045—Thermic screens or reflectors
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
383,165. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent Treuhand Ges. fur Electrische Gluhlampen ; 11, Ehrenbergstrasse, Berlin.) April 5, 1932, No. 9798. Convention date, May 7, 1931. [Class 39 (i).] In an enclosed electric arc lamp of the type wherein the electrodes 7 have an electronemitting filament 9 permanently connected across them, and the envelope is provided with a gas filling and a pool 10 of vaporizable metal, a screen 11 is arranged below the filament to protect the vaporizable pool from excessive heating. The screen, which is supported by wires 12 fused into a glass bead 14 supported on transverse wires 13, may consist of a circular gauze of molybdenum, as shown, or may be in the form of a hemispherical cup of heat resistant material which is polished on the inside to reflect heat and light rays back to the reflector normally provided on the lamp fitting. The filament 9 is supported by eyelets 8, 15 respectively formed in the electrode-supporting wires 6 and screen-supporting wires 12. The envelope 3 consists of quartz or other glass such as borosilicate glass which is transparent to ultraviolet rays, and the filling may consist of argon, nitrogen or other gas.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE383165X | 1931-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB383165A true GB383165A (en) | 1932-11-10 |
Family
ID=6363151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9798/32A Expired GB383165A (en) | 1931-05-07 | 1932-04-05 | Improvements in electric lamps |
Country Status (2)
Country | Link |
---|---|
US (1) | US1967906A (en) |
GB (1) | GB383165A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2862125A (en) * | 1956-01-06 | 1958-11-25 | Sylvania Electric Prod | Heat shield for incandescent lamp |
US3034007A (en) * | 1959-01-23 | 1962-05-08 | Gen Electric | Electric incandescent lamp |
AU604126B2 (en) * | 1987-06-11 | 1990-12-06 | Kabushiki Kaisha Toshiba | High intensity discharge lamp of the one side sealed type capable of compensating for the change of luminous efficiency caused by its different lighting angles and manufacturing method of the same |
-
1932
- 1932-04-05 GB GB9798/32A patent/GB383165A/en not_active Expired
- 1932-04-26 US US607616A patent/US1967906A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US1967906A (en) | 1934-07-24 |
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