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 same

Info

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
Application number
GB8410/37A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Schweiz AG
Albiswerk Zuerich AG
Original Assignee
Siemens Albis AG
Albiswerk Zuerich AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Albis AG, Albiswerk Zuerich AG filed Critical Siemens Albis AG
Publication of GB492712A publication Critical patent/GB492712A/en
Expired legal-status Critical Current

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

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.
GB8410/37A 1936-03-20 1937-03-22 An anode material for anodic incandescent lamps and method of producing same Expired GB492712A (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
US2189786A (en) 1940-02-13
DE702626C (en) 1941-02-12

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