GB439829A - Improvements in and relating to electric discharge lamps - Google Patents
Improvements in and relating to electric discharge lampsInfo
- Publication number
- GB439829A GB439829A GB1788834A GB1788834A GB439829A GB 439829 A GB439829 A GB 439829A GB 1788834 A GB1788834 A GB 1788834A GB 1788834 A GB1788834 A GB 1788834A GB 439829 A GB439829 A GB 439829A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- envelope
- parts
- discharge lamps
- 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
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/20—Seals between parts of vessels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
- H01J19/50—Spacing members extending to the envelope
-
- 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
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/26—Sealing together parts of vessels
- H01J9/265—Sealing together parts of vessels specially adapted for gas-discharge tubes or lamps
- H01J9/266—Sealing together parts of vessels specially adapted for gas-discharge tubes or lamps specially adapted for gas-discharge lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0002—Construction arrangements of electrode systems
- H01J2893/0005—Fixing of electrodes
- H01J2893/0008—Supply leads; Electrode supports via rigid connection to vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0037—Solid sealing members other than lamp bases
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
439,829. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and SCOTT, W. J., 16, Oval Road, Hillmorton Paddox, Rugby. June 16, 1934, No. 17888. [Class 39 (i)] In electric discharge lamps particularly of the high pressure metal vapour type wherein to avoid dead spaces the electrodes are mounted close to the hemispherical end of the tube, the envelope is formed in two parts in each of which an electrode is mounted, the two parts being sealed together after the electrodes &c. are (i) cleaned to remove traces of oxidation and (ii) coated with emissive material. As the joint in the envelope is some distance from the electrodes the heating of the envelope parts does not affect the electrodes. The envelope may be constructed as a whole and then cracked along its centre for access to the electrodes, after treatment of which the two parts are fused together again. Prepared electrodes may be welded to leads fused in the two envelope parts. U.S.A. Specification 1,877,932 is referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1788834A GB439829A (en) | 1934-06-16 | 1934-06-16 | Improvements in and relating to electric discharge lamps |
| FR791076D FR791076A (en) | 1934-06-16 | 1935-06-11 | Improvements to discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1788834A GB439829A (en) | 1934-06-16 | 1934-06-16 | Improvements in and relating to electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB439829A true GB439829A (en) | 1935-12-16 |
Family
ID=10102980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1788834A Expired GB439829A (en) | 1934-06-16 | 1934-06-16 | Improvements in and relating to electric discharge lamps |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR791076A (en) |
| GB (1) | GB439829A (en) |
-
1934
- 1934-06-16 GB GB1788834A patent/GB439829A/en not_active Expired
-
1935
- 1935-06-11 FR FR791076D patent/FR791076A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR791076A (en) | 1935-12-02 |
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