GB492712A - An anode material for anodic incandescent lamps and method of producing same - Google Patents
An anode material for anodic incandescent lamps and method of producing sameInfo
- Publication number
- GB492712A GB492712A GB8410/37A GB841037A GB492712A GB 492712 A GB492712 A GB 492712A GB 8410/37 A GB8410/37 A GB 8410/37A GB 841037 A GB841037 A GB 841037A GB 492712 A GB492712 A GB 492712A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbonized
- oxide
- anode material
- anodic
- anode
- 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
- H01K11/00—Lamps having an incandescent body which is not conductively heated, e.g. heated inductively, heated by electronic discharge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S29/00—Metal working
- Y10S29/044—Vacuum
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/30—Foil or other thin sheet-metal making or treating
- Y10T29/301—Method
- Y10T29/308—Using transitory material
Landscapes
- Carbon And Carbon Compounds (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
An anode material for lamps in which the light is emitted from an anode subjected to a modulated electron bombardment is of a cellular structure with walls less than 1/100 mm. thick, reproducing the structure of some animal or vegetable substance in material which does not volatilize or melt easily in a vacuum. For example, elder pith is boiled in a solution of sodium tungstate and the tungsten precipitated as oxide. The material is then carbonized and the carbon removed by heating in a stream of hydrogen or hydrocarbons which also convert the oxide to metal, or carbide. The cell walls may be thinned in this way before the refractory substance is added. The Specification as open to inspection under Sect. 91 also states that the carbonized and reduced organic structure may be employed without the addition of a refractory material and that the metallic material may be deposited from a vapour, e.g. tungsten chloride. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH492712X | 1936-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB492712A true GB492712A (en) | 1938-09-22 |
Family
ID=4516652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8410/37A Expired GB492712A (en) | 1936-03-20 | 1937-03-22 | An anode material for anodic incandescent lamps and method of producing same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2189786A (en) |
| DE (1) | DE702626C (en) |
| GB (1) | GB492712A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3018403A (en) * | 1958-03-05 | 1962-01-23 | Westinghouse Electric Corp | Reflector lamp |
| US3118081A (en) * | 1961-01-30 | 1964-01-14 | Lockheed Aircraft Corp | Infrared discharge lamp having conical anode heated by bombardment with electrons emitted by filamentary cathode |
| US3250608A (en) * | 1963-11-07 | 1966-05-10 | Electro Glass Lab Inc | Method and apparatus for the vacuum purification of materials |
-
1937
- 1937-03-12 DE DE1937A0082308 patent/DE702626C/en not_active Expired
- 1937-03-17 US US131357A patent/US2189786A/en not_active Expired - Lifetime
- 1937-03-22 GB GB8410/37A patent/GB492712A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE702626C (en) | 1941-02-12 |
| US2189786A (en) | 1940-02-13 |
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