GB447047A - Improvements in electric discharge devices - Google Patents
Improvements in electric discharge devicesInfo
- Publication number
- GB447047A GB447047A GB2913234A GB2913234A GB447047A GB 447047 A GB447047 A GB 447047A GB 2913234 A GB2913234 A GB 2913234A GB 2913234 A GB2913234 A GB 2913234A GB 447047 A GB447047 A GB 447047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- filling
- general electric
- discharge
- electric discharge
- 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
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
447,047. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and FRANCIS, V. J., and RYDE, J. W., c/o General Electric Co., Ltd., Wembley, Middlesex. Oct. 11, 1934, No. 29132. [Class 39 (i)] In the manufacture of double-walled, highpressure, metal-vapour lamps a filling of oxygen, preferably at a pressure of 10 to 100 mm., or of a gas mixture containing oxygen in the free state such as air, is maintained in the space between the two walls, while the lamp is operated by the full normal running current and/or baked. The filling is subsequently evacuated and as a result blackening of the envelope is prevented. In a modification of the process the inner envelope is treated in the atmosphere by running the discharge and/or baking, and is afterwards mounted within the outer envelope, care being taken to handle the inner envelope as little as possible during the mounting in the outer. The envelope may be made of material as set out in Specification 431,651.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2913234A GB447047A (en) | 1934-10-11 | 1934-10-11 | Improvements in electric discharge devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2913234A GB447047A (en) | 1934-10-11 | 1934-10-11 | Improvements in electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB447047A true GB447047A (en) | 1936-05-11 |
Family
ID=10286675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2913234A Expired GB447047A (en) | 1934-10-11 | 1934-10-11 | Improvements in electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB447047A (en) |
-
1934
- 1934-10-11 GB GB2913234A patent/GB447047A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB639013A (en) | Fluorescent electric discharge lamp | |
| GB448706A (en) | Improvements in and relating to electric discharge lamps | |
| GB673485A (en) | Improvements in or relating to electric discharge lamps | |
| GB447047A (en) | Improvements in electric discharge devices | |
| GB402747A (en) | Improvements in or relating to electric gas and vapor arc discharge lamps | |
| GB476833A (en) | Improvements in or relating to high-pressure metal-vapour electric discharge lamps | |
| GB667070A (en) | Improvements in and relating to electric discharge devices of the low pressure positive column type | |
| GB457797A (en) | Improvements in electric lamps for lighting purposes | |
| GB707265A (en) | Improvements in or relating to electrical discharge lamps | |
| GB674507A (en) | ||
| GB431651A (en) | Improvements in or relating to electric discharge devices | |
| GB161026A (en) | Improvements in incandescent electric lamps | |
| GB684717A (en) | Improvements in electric discharge lamps | |
| GB467025A (en) | Improvements in or relating to electric discharge devices | |
| GB434561A (en) | Improvements in electric discharge devices | |
| GB748928A (en) | Improvements in or relating to the manufacture of luminescent materials | |
| GB351579A (en) | Improvements in electric discharge devices | |
| GB455185A (en) | Improvements in and relating to methods of purifying graphite | |
| GB1316356A (en) | Electric discharge lamps | |
| GB410706A (en) | Improvements in vacuum tight enclosed carbon arc lamps | |
| GB657027A (en) | Improvements in or relating to the manufacture of electron discharge devices | |
| GB193675A (en) | Improvements in and relating to electric incandescent lamps of the gas-filled type | |
| GB660290A (en) | Improvements in or relating to fluorescent lamps | |
| ES201251A1 (en) | An electrical lamp (Machine-translation by Google Translate, not legally binding) | |
| GB422364A (en) | Improvements in electric discharge lamps |