US2056926A - Electric gaseous discharge device - Google Patents

Electric gaseous discharge device Download PDF

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Publication number
US2056926A
US2056926A US737829A US73782934A US2056926A US 2056926 A US2056926 A US 2056926A US 737829 A US737829 A US 737829A US 73782934 A US73782934 A US 73782934A US 2056926 A US2056926 A US 2056926A
Authority
US
United States
Prior art keywords
mercury
envelope
lamp
discharge device
gaseous discharge
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 - Lifetime
Application number
US737829A
Other languages
English (en)
Inventor
Krefft Hermann
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.)
General Electric Co
Original Assignee
General Electric 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
Priority to NL38405D priority Critical patent/NL38405C/xx
Priority to GB20256/34A priority patent/GB432614A/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to US26825A priority patent/US2087762A/en
Application granted granted Critical
Publication of US2056926A publication Critical patent/US2056926A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour

Definitions

  • my novel lamp has a tubular envelope filled with any suitable gas .velope I.
  • a tubular jacket 2 Surrounding said envelope I there is a tubular jacket 2.
  • the space between the envelope I and the jacket 2 is either evacuated or filled with an indifferent gas, such as nitrogen, at any suitable pressure, such as half an atmosphere.
  • the jacket 2 has at one end thereof a stem 3, through the pinch 4 of which two current inleads 5 and 6 are sealed.
  • the current inlead 5 is flexibly connected to the inlead I which is fused into the adjacent end of the envelope I.
  • Said inlead I carries at its inner end a thermionic cathode 8, while a second thermionic cathode 9 is carried by an inlead Ill which is sealed through the opposite end of the en-
  • thermionic electrodes 8 and 9 can be of any desired type and composition, but
  • the wire I4 is in practice made an extension of the inlead 6, and the lower end thereof is flexibly connected with the inlead In, so that this wire also serves to conduct the current to the thermionic cathode 9.
  • Each metal ring H and 52 has a plurality of spring fingers i 5 affixed to the outside thereof which bear against the inner wall of the jacket 2, and thus 'serve to prevent lateral displacement of the envelope I.
  • a screw base 22 is firmly attached to the jacket 2 by means of the clamping band 23, leads 5 and 6 being connected to the tip 24 and sleeve 25 thereof, respectively.
  • the glass of the envelope I is preferably an aluminum silicate glass of special composition which I have discovered resists blackening. This glass contains silica of the order of 60% or less,
  • This glass has a softening temperature of approximately 750 C., so that a mercury vapor discharge at several atmospheres vapor pressure can be operated in a lamp constructed thereof without danger.
  • a mercury vapor arc lamp of the high pressure type comprising a sealed envelopecontaining mercury together with from 0.2 to 5% of caesium, and having electrodes sealed within said envelope.
  • said envelope consisting of an aluminum silicate glass having a composition of the order of 60% or less of silica, more than 20% alumina, the balanceconsisting of other glass forming materials such as boric oxide, magnesium oxide and calcium oxide.
  • a mercury vapor arc lamp of the high pressure type comprising a sealed envelope having thermionic electrodes sealed therein, said envelope containing mercury together with from 0.2 to 5% of caesium.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US737829A 1933-08-21 1934-07-31 Electric gaseous discharge device Expired - Lifetime US2056926A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL38405D NL38405C (fr) 1933-08-21
GB20256/34A GB432614A (en) 1933-08-21 1934-07-10 Improvements in luminous electric discharge lamps
US26825A US2087762A (en) 1933-08-21 1935-06-15 Glass composition for electric gaseous discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2056926X 1933-08-21

Publications (1)

Publication Number Publication Date
US2056926A true US2056926A (en) 1936-10-06

Family

ID=7982922

Family Applications (1)

Application Number Title Priority Date Filing Date
US737829A Expired - Lifetime US2056926A (en) 1933-08-21 1934-07-31 Electric gaseous discharge device

Country Status (2)

Country Link
US (1) US2056926A (fr)
FR (1) FR776601A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671183A (en) * 1951-09-12 1954-03-02 Gen Electric Electric discharge lamp mount
US2733363A (en) * 1956-01-31 Arc tube mount
US2961328A (en) * 1958-12-02 1960-11-22 Owens Illinois Glass Co Refractory glass composition
US2971110A (en) * 1959-08-26 1961-02-07 Gen Electric Metal vapor lamps
US3054922A (en) * 1959-08-26 1962-09-18 Gen Electric Intermediate pressure wall stabilized gas lamp
US3259779A (en) * 1951-11-17 1966-07-05 Westinghouse Electric Corp Improving efficiency of infrared radiation generation by alkali metal vapor lamps and prolonging their useful lives

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733363A (en) * 1956-01-31 Arc tube mount
US2671183A (en) * 1951-09-12 1954-03-02 Gen Electric Electric discharge lamp mount
US3259779A (en) * 1951-11-17 1966-07-05 Westinghouse Electric Corp Improving efficiency of infrared radiation generation by alkali metal vapor lamps and prolonging their useful lives
US2961328A (en) * 1958-12-02 1960-11-22 Owens Illinois Glass Co Refractory glass composition
US2971110A (en) * 1959-08-26 1961-02-07 Gen Electric Metal vapor lamps
US3054922A (en) * 1959-08-26 1962-09-18 Gen Electric Intermediate pressure wall stabilized gas lamp

Also Published As

Publication number Publication date
FR776601A (fr) 1935-01-30

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