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GB526064A - Improvements in electrodes for electric discharge devices - Google Patents

Improvements in electrodes for electric discharge devices

Info

Publication number
GB526064A
GB526064A GB744339A GB744339A GB526064A GB 526064 A GB526064 A GB 526064A GB 744339 A GB744339 A GB 744339A GB 744339 A GB744339 A GB 744339A GB 526064 A GB526064 A GB 526064A
Authority
GB
United Kingdom
Prior art keywords
rod
helix
tube
electrode
place
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
GB744339A
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to GB744339A priority Critical patent/GB526064A/en
Publication of GB526064A publication Critical patent/GB526064A/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
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode

Landscapes

  • Discharge Lamp (AREA)

Abstract

526,064. Discharge lamp electrodes. GENERAL ELECTRIC CO., Ltd. (Patent Treuhand-Ges. f³r Elektrische Gl³hlampen). March 7, 1939, No. 7443. [Class 39 (i)] An electrode for use in a high pressure metal vapour discharge device consists of a tungsten rod 1- which may form the lead in-surrounded by a tungsten helix 2 of two diameters, one near the end small enough for the helix to grip the rod ; a sintered tube 4 of thoria and alkaline earth is placed between the rod and the larger helix, the tube being held in place by a smaller turn 7. The end of the rod is convex; a tube may be used in place of the rod. The filling is of a rare gas and mercury which is at full operation at a pressure of 5 atmospheres. An auxiliary starting electrode may be used with each main electrode. Specification 507,445 is referred to.
GB744339A 1939-03-07 1939-03-07 Improvements in electrodes for electric discharge devices Expired GB526064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB744339A GB526064A (en) 1939-03-07 1939-03-07 Improvements in electrodes for electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB744339A GB526064A (en) 1939-03-07 1939-03-07 Improvements in electrodes for electric discharge devices

Publications (1)

Publication Number Publication Date
GB526064A true GB526064A (en) 1940-09-10

Family

ID=9833195

Family Applications (1)

Application Number Title Priority Date Filing Date
GB744339A Expired GB526064A (en) 1939-03-07 1939-03-07 Improvements in electrodes for electric discharge devices

Country Status (1)

Country Link
GB (1) GB526064A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667592A (en) * 1951-01-11 1954-01-26 Hanovia Chemical & Mfg Co Electrode for compact type electrical discharge devices
US2682007A (en) * 1951-01-11 1954-06-22 Hanovia Chemical & Mfg Co Compact type electrical discharge device
DE1017285B (en) * 1954-07-12 1957-10-10 Gen Electric Self-heating electrode made of heat-resistant metal for high-pressure arc discharge lamps
DE1130070B (en) * 1959-12-17 1962-05-24 Gen Electric Cathode for gas and / or vapor discharge lamps and process for their manufacture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667592A (en) * 1951-01-11 1954-01-26 Hanovia Chemical & Mfg Co Electrode for compact type electrical discharge devices
US2682007A (en) * 1951-01-11 1954-06-22 Hanovia Chemical & Mfg Co Compact type electrical discharge device
DE1017285B (en) * 1954-07-12 1957-10-10 Gen Electric Self-heating electrode made of heat-resistant metal for high-pressure arc discharge lamps
DE1130070B (en) * 1959-12-17 1962-05-24 Gen Electric Cathode for gas and / or vapor discharge lamps and process for their manufacture

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