GB215310A - Improvements in tungsten arc lamps - Google Patents
Improvements in tungsten arc lampsInfo
- Publication number
- GB215310A GB215310A GB26592/23A GB2659223A GB215310A GB 215310 A GB215310 A GB 215310A GB 26592/23 A GB26592/23 A GB 26592/23A GB 2659223 A GB2659223 A GB 2659223A GB 215310 A GB215310 A GB 215310A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- cathode
- electrodes
- arc
- contact
- 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
- H01J61/98—Lamps with closely spaced electrodes heated to incandescence by light-emitting discharge, e.g. tungsten arc lamp
Landscapes
- Discharge Lamp (AREA)
Abstract
215,310. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges f³r Elektrische Gl³hlampen). May 5, 1923, [Convention date]. Arc lamps; electrodes.-In an enclosed lamp with tungsten electrodes the electrodes are in contact, when the lamp is not in use, at points other than those at which the the working arc forms, the contact therefore being independent of any change in the form of the electrodes during running. In the apparatus shown a hemispherical anode h normally rests against a hemispherical tungsten body m, fixed over a coating g<1> of thorium oxide on the cathode g. When current passes the anode is moved in the direction of the arrow by a bimetallic strip, not shown, forming part of the electrode support, the arc then taking place between the nearest points of the anode and cathode. In a modification the cathode is bent, contact of the anode taking place with one limb and arising with the other. In another modification, the cathode is straight and the bimetallic strip is arranged to move the anode obliquely when the arc is struck and to rotate it simultaneously.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE215310X | 1923-05-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB215310A true GB215310A (en) | 1924-07-10 |
Family
ID=5823325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26592/23A Expired GB215310A (en) | 1923-05-05 | 1923-10-24 | Improvements in tungsten arc lamps |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1640450A (en) |
| GB (1) | GB215310A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2891188A (en) * | 1955-03-24 | 1959-06-16 | Bell Telephone Labor Inc | Gaseous discharge device |
-
1923
- 1923-10-24 GB GB26592/23A patent/GB215310A/en not_active Expired
- 1923-12-24 US US682371A patent/US1640450A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1640450A (en) | 1927-08-30 |
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