GB185732A - An improved electric incandescent lamp and process for manufacturing the same - Google Patents
An improved electric incandescent lamp and process for manufacturing the sameInfo
- Publication number
- GB185732A GB185732A GB23464/22A GB2346422A GB185732A GB 185732 A GB185732 A GB 185732A GB 23464/22 A GB23464/22 A GB 23464/22A GB 2346422 A GB2346422 A GB 2346422A GB 185732 A GB185732 A GB 185732A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphorus
- lamp
- filament
- filled
- less
- 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
- H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
- H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
- H01K1/56—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering characterised by the material of the getter
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Discharge Lamp (AREA)
- Resistance Heating (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
185,732. Just-FÚle Izz¾lßmpa Ús Villamossßgi Gyßr RÚsvÚnytßrsasßg, Dr. Sept. 6,1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Filaments; residual gases.-A lamp of the inert gas-filled type is given a content of phosphorus or phosphorus compound exceeding 0.1 per cent of the weight of the incandescent body and contains gas at a pressure of less than 0.1 of an atmosphere. The phosphorus may be introduced as a coating on the filament or by making the filament of a tungsten alloy high in phosphorus. It may also be replaced wholly or in part by other elements of the phosphorus group, such as sulphur, antimony, arsenic, selenium, or tellurium, or by compounds of these, such as antimony or arsenic sulphide. In one method of making the lamp, the frame is made hollow and is filled with phosphorus. The lamp is heated on the pump in an air bath at 400‹ C. and the filament raised to incandescence. The phosphorus is allowed to vaporize for some time and after the current has been cut off and the lamp cooled, less than 0.1 atmosphere of inert gas is introduced. During the evacuation, the lamp may be cleansed by introducing and drawing off hydrogen. Lamps so heated have a reduced blackening, and when filled with pure argon are less liable to discharge through their gas content.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU185732X | 1921-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB185732A true GB185732A (en) | 1923-03-22 |
Family
ID=10977923
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23464/22A Expired GB185732A (en) | 1921-09-06 | 1922-08-29 | An improved electric incandescent lamp and process for manufacturing the same |
| GB33345/22A Expired GB190474A (en) | 1921-09-06 | 1922-12-06 | Improvements in or relating to incandescent electric lamps |
| GB4105/23A Expired GB193833A (en) | 1921-09-06 | 1923-02-12 | Improved manufacture of electric lamps |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33345/22A Expired GB190474A (en) | 1921-09-06 | 1922-12-06 | Improvements in or relating to incandescent electric lamps |
| GB4105/23A Expired GB193833A (en) | 1921-09-06 | 1923-02-12 | Improved manufacture of electric lamps |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR556039A (en) |
| GB (3) | GB185732A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2508955B2 (en) * | 1992-04-20 | 1996-06-19 | ソニー株式会社 | Sliding magnetic head for magneto-optical recording |
-
1922
- 1922-08-29 GB GB23464/22A patent/GB185732A/en not_active Expired
- 1922-08-31 FR FR556039D patent/FR556039A/en not_active Expired
- 1922-12-06 GB GB33345/22A patent/GB190474A/en not_active Expired
-
1923
- 1923-02-12 GB GB4105/23A patent/GB193833A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB190474A (en) | 1923-07-26 |
| GB193833A (en) | 1923-10-04 |
| FR556039A (en) | 1923-07-10 |
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