GB441895A - Improvements in or relating to electric gaseous discharge lamps - Google Patents

Improvements in or relating to electric gaseous discharge lamps

Info

Publication number
GB441895A
GB441895A GB29381/34A GB2938134A GB441895A GB 441895 A GB441895 A GB 441895A GB 29381/34 A GB29381/34 A GB 29381/34A GB 2938134 A GB2938134 A GB 2938134A GB 441895 A GB441895 A GB 441895A
Authority
GB
United Kingdom
Prior art keywords
electrodes
oct
discharge lamps
nitrogen
hydrogen
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
GB29381/34A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB441895A publication Critical patent/GB441895A/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
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/76—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only

Landscapes

  • Discharge Lamp (AREA)

Abstract

441,895. Discharge lamps. BOSCH, F. J. G. VAN DEN, 131, Rue Markelbach, Brussels. Oct. 13, 1934, No. 29381. Convention date, Oct. 27, 1933. Drawings to Specification. [Class 39 (i)] [See also Group XI] In electric lamps of the type in which the light is emitted from spaced electrodes heated to incandescence by a discharge through a gas between them, the filling consists of a rare gas, nitrogen and hydrogen, the amounts of nitrogen and hydrogen being not more than 20 and 5 per cent respectively of the amount of rare gas. The electrodes may consist of two parallel wires of round, flat or other suitable cross-section, spaced 1 to 2À5 mms. apart for mains voltages of from 110 to 220 volts. Wires of circular cross-section may vary in diameter from 0À2 mm. to 1 mm. for ratings of from 10 to 100 watts. The electrodes may be of tungsten or containing tantalum nitrite, and preferably at least one electrode is treated with boron to increase its resistance, for example, by heating it in an atmosphere of boron trichloride.
GB29381/34A 1933-10-27 1934-10-13 Improvements in or relating to electric gaseous discharge lamps Expired GB441895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR441895X 1933-10-27

Publications (1)

Publication Number Publication Date
GB441895A true GB441895A (en) 1936-01-29

Family

ID=8900163

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29381/34A Expired GB441895A (en) 1933-10-27 1934-10-13 Improvements in or relating to electric gaseous discharge lamps

Country Status (1)

Country Link
GB (1) GB441895A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE754219C (en) * 1938-04-24 1954-03-15 Quarzlampen G M B H High-pressure metal vapor lamp, in particular high-pressure mercury lamp, with fixed, non-activated heating electrodes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE754219C (en) * 1938-04-24 1954-03-15 Quarzlampen G M B H High-pressure metal vapor lamp, in particular high-pressure mercury lamp, with fixed, non-activated heating electrodes

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