ES194139A1 - AN ARC DISCHARGE DEVICE - Google Patents

AN ARC DISCHARGE DEVICE

Info

Publication number
ES194139A1
ES194139A1 ES0194139A ES194139A ES194139A1 ES 194139 A1 ES194139 A1 ES 194139A1 ES 0194139 A ES0194139 A ES 0194139A ES 194139 A ES194139 A ES 194139A ES 194139 A1 ES194139 A1 ES 194139A1
Authority
ES
Spain
Prior art keywords
arc
metal
base metal
molten
particles
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
ES0194139A
Other languages
Spanish (es)
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.)
Western Union Telegraph Co
Original Assignee
Western Union Telegraph Co
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 Western Union Telegraph Co filed Critical Western Union Telegraph Co
Publication of ES194139A1 publication Critical patent/ES194139A1/en
Expired legal-status Critical Current

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
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
    • H01J61/0677—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12097—Nonparticulate component encloses particles

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Dispositivo de descarga de arco que comprende estructuras de electrodo que funcionan en un medio gaseoso que contiene una proporción sustancial de oxígeno libre a una presión suficientemente alta para hacer que la descarga entre las estructuras electródicas tome la forma de un arco concentrado estable siendo al menos una de dichas estructuras electródicas operativa como cátodo y comprendiendo una masa de material catódico que tiene una capa superficial fundida restringida formada por un arco de densidad de corriente elevada que es concentrado sobre ella cuando el dispositivo está funcionando caracterizada porque dicha capa superficial fundida comprende un óxido metálico que tiene propiedades de emisión termiónica y que es reducible por la acción del arco para formar una delgada película superficial incandescente fundida del metal de base cuando el dispositivo está en funcionamiento soportando dicha capa de óxido dicha película fundida y teniendo baja conductividad térmica y un punto de fusión superior al de dicho metal para mantener la temperatura de la película considerablemente por encima del punto de fusión de dicho metal haciendo la acción de dicho arco que ocurra una reacción reversible entre la reducción y la oxidación en dicha capa superficial comprendiendo la masa de material catódico que está debajo de dicha capa de óxido particulas de dicho metal de base y medios para impedir la oxidación progresiva del metal de base debajo de la capa de óxido comprendiendo estos últimos medios partículas de una sustancia metálica conductora interdispersa con dichas partículas del metal de base estando dicha sustancia metálica esencialmente libre de tendencias a la oxidación progresiva a la temperatura de funcionamiento del dispositivo.Arc discharge device comprising electrode structures operating in a gaseous medium containing a substantial proportion of free oxygen at a pressure high enough to cause the discharge between the electrode structures to take the form of a stable concentrated arc being at least one of said electrode structures operative as a cathode and comprising a mass of cathode material having a constrained molten surface layer formed by an arc of high current density that is concentrated on it when the device is operating characterized in that said molten surface layer comprises a metal oxide having thermionic emitting properties and being reducible by arc action to form a thin molten glowing surface film of the base metal when the device is in operation said oxide layer supporting said molten film and having low thermal conductivity and a melting point melting greater than that of said metal to maintain the temperature of the film considerably above the melting point of said metal by the action of said arc causing a reversible reaction between reduction and oxidation to occur in said surface layer comprising the mass of cathode material which is below said oxide layer particles of said base metal and means for preventing the progressive oxidation of the base metal below the oxide layer, the latter means comprising particles of a conductive metallic substance interdispersed with said particles of the base metal being said metallic substance essentially free from progressive oxidation tendencies at the operating temperature of the device.

ES0194139A 1949-08-10 1950-08-02 AN ARC DISCHARGE DEVICE Expired ES194139A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US109456A US2541028A (en) 1949-08-10 1949-08-10 Concentrated arc discharge device

Publications (1)

Publication Number Publication Date
ES194139A1 true ES194139A1 (en) 1952-06-16

Family

ID=22327751

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0194139A Expired ES194139A1 (en) 1949-08-10 1950-08-02 AN ARC DISCHARGE DEVICE

Country Status (2)

Country Link
US (1) US2541028A (en)
ES (1) ES194139A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1317199A (en) * 1919-09-30 moore
US1367352A (en) * 1915-10-20 1921-02-01 Technicolor Motion Picture Method of and device for controlling electric arcs
US2040596A (en) * 1933-08-18 1936-05-12 Brenkert Light Projection Comp Arc regulator
US2107148A (en) * 1935-02-01 1938-02-01 Opticolor Ag Reflector arc lamp for the projection of colored pictures
US2276644A (en) * 1940-01-26 1942-03-17 Westinghouse Electric & Mfg Co Welding system
US2422038A (en) * 1942-01-17 1947-06-10 Lorraine Carbone Anodes for intensive arcs

Also Published As

Publication number Publication date
US2541028A (en) 1951-02-13

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