GB215308A - Tungsten arc lamps - Google Patents
Tungsten arc lampsInfo
- Publication number
- GB215308A GB215308A GB25678/23A GB2567823A GB215308A GB 215308 A GB215308 A GB 215308A GB 25678/23 A GB25678/23 A GB 25678/23A GB 2567823 A GB2567823 A GB 2567823A GB 215308 A GB215308 A GB 215308A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- electrodes
- bulb
- aperture
- arc lamps
- 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)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
215,308. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen). May 4, 1923, [Convention date]. Arc lamps; electrodes. - An enclosed lamp with tungsten electrodes is provided with a screen f of glass, mica, metal or other material having an aperture h on a level with the electrodes. The screen may extend around the electrodes completely or only on the side from which light is to be emitted. Disintegrated matter is deposited on the inside of the screen. The screen may be secured to the bulb by arms l at the top, as shown, or at the bottom or may be secured to the stem by wires. The screen is preferably closed at the bare k so as to produce an inward current through the aperture h. In a modification, closure is produced by fusing the lower edge of the screen to the bulb a; when the bulb is cylindrical the screen may be flared for this purpose. The electrodes maybe arranged eccentrically of the screen and nearthe aperture h to enable a larger projecting lens. to be used with the lamp.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE215308X | 1923-05-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB215308A true GB215308A (en) | 1924-06-05 |
Family
ID=5823316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25678/23A Expired GB215308A (en) | 1923-05-04 | 1923-10-15 | Tungsten arc lamps |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1632578A (en) |
| GB (1) | GB215308A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5154603A (en) * | 1989-11-27 | 1992-10-13 | Instrumentarium Corp. | Examination method and apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2904711A (en) * | 1957-04-26 | 1959-09-15 | Sylvania Electric Prod | Incandescent lamp |
| US5051655A (en) * | 1987-01-28 | 1991-09-24 | Venture Lighting International, Inc. | Electrodes for single ended arc discharge tubes |
-
0
- US US1632578D patent/US1632578A/en not_active Expired - Lifetime
-
1923
- 1923-10-15 GB GB25678/23A patent/GB215308A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5154603A (en) * | 1989-11-27 | 1992-10-13 | Instrumentarium Corp. | Examination method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| US1632578A (en) | 1927-06-14 |
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