US2094680A - Gaseous electric discharge device - Google Patents

Gaseous electric discharge device Download PDF

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Publication number
US2094680A
US2094680A US118645A US11864536A US2094680A US 2094680 A US2094680 A US 2094680A US 118645 A US118645 A US 118645A US 11864536 A US11864536 A US 11864536A US 2094680 A US2094680 A US 2094680A
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US
United States
Prior art keywords
container
strip
starting
discharge device
electric 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
US118645A
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English (en)
Inventor
Schouwstra Pieter
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
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US2094680A publication Critical patent/US2094680A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel

Definitions

  • the present invention relates to gaseous electric discharge devices generally and more particularly the invention relates to such devices comprising an elongated container having elec- 5 trodes mounted adjacent the ends thereof and a body of an electrically conducting material extending along the discharge path between said electrodes to facilitate the starting of the discharge in said device.
  • a strip of electrically conducting material, such as graphite or precipitated silver, applied as a coating on the outer surface of the container wall and connected to a current source is effective for starting the discharge in such devices.
  • Such l5 coatings frequently crumble or rupture under service conditions and thus become less efiective for starting purposes.
  • the object of the present invention is to pro-' vide a rugged, inexpensive, adherent, flexible, electrically conducting strip for facilitating the starting of the discharge in an elongated container of a gaseous electric discharge device. Still further objects and advantages attaching to the device and to its use and operation will. be
  • the starting strip of the present invention comprises two or more straight parts contiguous with the outer surface of the container which parts are connected by a resilient bent part which, when compressed, exerts a force suiiicient to hold said straight parts firmly against the surface of the container.
  • the starting strip of the present invention is particularly useful for U-shaped discharge devices.
  • the strip is mounted between the legs of the container with the straight parts thereof pressing against one leg and the bent part thereof pressi: -g against the other leg.
  • a starting strip made in accordance with the present invention is capable of adapting itself 5 to containers of different configurations and to many December 21, 1935 the changes in the distance between the legs of the container during the operation of the device so that a good contact between the starting strip and the container wall is always maintained.
  • the glass wall of the container conducts electricity during the operation of the device. Electrolysis frequently takes place at the parts of the container in 10 contact with the starting strip and the container becomes softened at said parts which terminates the life of the lamp. It is, therefore, advantageous to interpose a high heat resisting, insulating material between the starting strip and the con- 15 tainer to prevent such electrolysis.
  • the gaseous electric 20 discharge device comprises an elongated, tubular, U-shaped container I having a thermionic electrode 2 sealed into each end thereof and having a gaseous atmosphere therein comprising a rare gas, a metal vapor, or a mixture of starting gas 25 and metal vapor, such as a mixture of neon at a' pressure of approximately 1 to 10 mm. and sodium vapor.
  • the container has therein a quantity of sodium which vaporizes during the operation of the device.
  • Said electrodes 2 are electron 30 emitting when heated and consist of a coiled filament, such as a tungsten filament, having another filament wrapped around it and a coating of electron emitting material, such as a barium oxide on said electrode.
  • a starting strip 3, 4 consisting of electrically conducting material, such as nickel, and which is several millimeters in width is mounted between thelegs of the container I.
  • Said strip 3, 4 con- 40 sists of a plurality of straight parts 3 which press against one leg of said container l and a plurality of bent parts 4 which press against the other leg of said container so that the starting strip is firmly held in position between the legs 45 of said container l.
  • the starting strip 3, 4 is connected by lead 5 to a lead of that electrode 2 mounted in the leg of the container other than that leg against which the parts 3 of said strip are contiguous. 50
  • an electrically insulating, high heat resisting material is interposed between the container I and the strip 3, 4 to prevent electrolysis of the glass container I.
  • the strip 3, '4 consists of an enamelled spring steel ribb n,
  • the curved part 6 of the container l is provided with a metal strap which is connected to the strip 3, 4 to act as an auxiliary, starting electrode, when desired, or, when desired, an auxiliary electrode is sealed into the container I at the curved part 6 thereof, which auxiliary electrode is connected to the strip 3, 4.
  • a gaseous electric discharge device comprising an elongated, U-sharied; tubular container having a gaseous atmosphere therein and electrodes sealed therein adjacent the ends thereof and a strip of electrically conducting material interposed between the legs of said container and extending along the discharge path between said electrodes to facilitate the starting of the discharge in the device, said strip comprising a plurality of straight parts connected by a resilient bent part, said straight parts pressing against one leg of said container and said bent part pressing against another leg of said container.
  • a gaseous electric discharge device comprising an elongated, U-shaped, tubular container having a gaseous atmosphere therein and electrodes sealed therein adjacent the ends thereof, a strip 01 electrically conducting material interposed between the legs of said container and extending along the discharge path between said electrodes to facilitate the starting of the discharge in said device and .a body of material having good electrical insulating properties at elevated temperatures interposed between said strip and said container, said strip comprising a plurality of straight parts connected by a resilient bent part, said bent part, when compressed, exerting suflicient force to support said straight parts firmly against the wall of said container.

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  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Electrotherapy Devices (AREA)
US118645A 1935-12-21 1936-12-31 Gaseous electric discharge device Expired - Lifetime US2094680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE462451X 1935-12-21

Publications (1)

Publication Number Publication Date
US2094680A true US2094680A (en) 1937-10-05

Family

ID=6539991

Family Applications (1)

Application Number Title Priority Date Filing Date
US118645A Expired - Lifetime US2094680A (en) 1935-12-21 1936-12-31 Gaseous electric discharge device

Country Status (7)

Country Link
US (1) US2094680A (zh)
AT (1) AT151591B (zh)
BE (1) BE419084A (zh)
DK (1) DK54581C (zh)
FR (1) FR815219A (zh)
GB (1) GB462451A (zh)
NL (1) NL47707C (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504549A (en) * 1947-02-28 1950-04-18 Gen Electric Starting and operating circuit for electric discharge devices
US5391960A (en) * 1991-06-27 1995-02-21 Stanley Electric Co., Ltd. Cold cathode tube for generating light with uniform intensity along the tube

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321502A (en) * 1979-12-03 1982-03-23 General Electric Company U-Shaped discharge lamp with starting strip
FR2568409A1 (fr) * 1984-07-30 1986-01-31 Graniou Sa Electronique Louis Lampe d'eclairage a decharge dans la vapeur a basse pression comportant un dispositif integre ou non pour rallumer la lampe lorsque celle-ci est encore chaude

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504549A (en) * 1947-02-28 1950-04-18 Gen Electric Starting and operating circuit for electric discharge devices
US5391960A (en) * 1991-06-27 1995-02-21 Stanley Electric Co., Ltd. Cold cathode tube for generating light with uniform intensity along the tube

Also Published As

Publication number Publication date
DK54581C (da) 1938-04-11
NL47707C (zh)
FR815219A (fr) 1937-07-08
GB462451A (en) 1937-03-09
BE419084A (zh)
AT151591B (de) 1937-11-25

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