GB696846A - Improvements relating to high temperature electric lamps - Google Patents
Improvements relating to high temperature electric lampsInfo
- Publication number
- GB696846A GB696846A GB746751A GB746751A GB696846A GB 696846 A GB696846 A GB 696846A GB 746751 A GB746751 A GB 746751A GB 746751 A GB746751 A GB 746751A GB 696846 A GB696846 A GB 696846A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- high temperature
- smoke
- produced
- 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/26—Screens; Filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
Abstract
696,846. Electric discharge lamps. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd. March 21, 1952 [March 30, 1951], No. 7467/51. Class 39(i) [Also in Group XI] The light source of a high temperature gas or vapour discharge lamp operating at high intrinsic brilliance is closely surrounded by a quartz envelope which acquires a high temperature when the lamp is in operation and which is rendered diffusing by the deposition on its outer surface of fine particles of silica produced by burning a silicate ester to form a smoke, the whole being enclosed in a larger outer vessel which runs at a much lower temperature than the quartz envelope and may be made of glass and either sealed or unsealed. The smoke that is deposited on the quartz envelope may be produced by burning ethyl silicate in oxygen at a burner provided with fine jets through which the silicate is forced, whereupon silicon dioxide is produced in the form of particulate smoke. The envelope may be rotated during the deposition of the coating, or the jets may be rotated around the envelope. The invention is applicable to screens within electric incandescent lamps, (see Group XI).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB746751A GB696846A (en) | 1951-03-30 | 1951-03-30 | Improvements relating to high temperature electric lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB746751A GB696846A (en) | 1951-03-30 | 1951-03-30 | Improvements relating to high temperature electric lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB696846A true GB696846A (en) | 1953-09-09 |
Family
ID=9833654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB746751A Expired GB696846A (en) | 1951-03-30 | 1951-03-30 | Improvements relating to high temperature electric lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB696846A (en) |
-
1951
- 1951-03-30 GB GB746751A patent/GB696846A/en not_active Expired
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