GB299931A - Improvements in or relating to gasfilled incandescent cathode discharge tubes - Google Patents

Improvements in or relating to gasfilled incandescent cathode discharge tubes

Info

Publication number
GB299931A
GB299931A GB21313/27A GB2131327A GB299931A GB 299931 A GB299931 A GB 299931A GB 21313/27 A GB21313/27 A GB 21313/27A GB 2131327 A GB2131327 A GB 2131327A GB 299931 A GB299931 A GB 299931A
Authority
GB
United Kingdom
Prior art keywords
glass
quartz
wall
cathode
expansion
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
GB21313/27A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB299931A publication Critical patent/GB299931A/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
    • H01J61/92—Lamps with more than one main discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/302—Vessels; Containers characterised by the material of the vessel

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

299,931. Dicker, S. G. S., (Naamlooze Vennootschap, Philips' Gloeilampenfabrieken). Aug. 12, 1927. Vacuum tubes; lowpressure metallic-vapour apparatus.-A gas-filled discharge tube adapted for the radiation of ultraviolet light has an incandescent oxide or oxidecontaining cathode 1, one or more solid anodes 2, 3, a gaseous filling comprising mercury vapour and a rare gas such as argon, and has at least a part of the wall of quartz or glass of extremely low coefficient of expansion. The lamp may operate with either an arc or a positive! column discharge, and starting may be assisted by an auxiliary anode 4. In the device shown, the cathode is formed by spiralling a tungsten wire on which a nickel wire coated with barium oxide has been wound. The anodes consist of carbon cylinders with bevelled ends. The envelope comprises an outer glass wall 6 and an inner chamber formed by a quartz wall 7 into which substances may be placed for treatment. The glass and quartz parts are connected together by a graded seal 10, comprising a number of rings of glass having graded coefficients of expansion.
GB21313/27A 1927-07-21 1927-08-12 Improvements in or relating to gasfilled incandescent cathode discharge tubes Expired GB299931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE134774X 1927-07-21

Publications (1)

Publication Number Publication Date
GB299931A true GB299931A (en) 1928-11-08

Family

ID=5665667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21313/27A Expired GB299931A (en) 1927-07-21 1927-08-12 Improvements in or relating to gasfilled incandescent cathode discharge tubes

Country Status (3)

Country Link
CH (1) CH134774A (en)
FR (1) FR657936A (en)
GB (1) GB299931A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038719A1 (en) * 2009-08-25 2011-03-10 Uv-El Gmbh & Co. Kg Device for ultrasonic irradiation of small amount of samples, has quartz glass capillary tube with middle part formed as straight pipes, and electrodes guided through wall in ends of vessel, where ends are opposite to areas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038719A1 (en) * 2009-08-25 2011-03-10 Uv-El Gmbh & Co. Kg Device for ultrasonic irradiation of small amount of samples, has quartz glass capillary tube with middle part formed as straight pipes, and electrodes guided through wall in ends of vessel, where ends are opposite to areas
DE102009038719B4 (en) * 2009-08-25 2013-09-12 Uv-El Gmbh & Co. Kg Device for UV irradiation of small amounts of sample

Also Published As

Publication number Publication date
CH134774A (en) 1929-08-15
FR657936A (en) 1929-05-29

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