GB302315A - Improvements in electron discharge devices - Google Patents

Improvements in electron discharge devices

Info

Publication number
GB302315A
GB302315A GB36865/28A GB3686528A GB302315A GB 302315 A GB302315 A GB 302315A GB 36865/28 A GB36865/28 A GB 36865/28A GB 3686528 A GB3686528 A GB 3686528A GB 302315 A GB302315 A GB 302315A
Authority
GB
United Kingdom
Prior art keywords
caesium
disc
tubes
discharge devices
electron 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
Application number
GB36865/28A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB302315A publication Critical patent/GB302315A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Lasers (AREA)

Abstract

302,315. British Thomson-Houston Co., Ltd., (Assignees of Ruggles, W. A.). Dec. 14, 1927, [Convention date]. Low pressure metallicvapour apparatus.-In the method of introducing alkali and other readilv oxidizable metals, such as caesium, into capillary tubes, described in Specification 296,347. sodiummagnesium - borosilicate glass is used, so that, on .fusing the ends of the tubes to seal them, the caesium &c. reacts with the glass at the ends and forms a vitreous material having a coefficient of expansion different from that of the intermediate portions of the tube. When intended for use with electron discharge devices and the like, the sealed tubes 9 are mounted by metal straps 10 on a thin nickel &c. disc 6 mounted on a leading-in wire 7 and a supporting wire 8 connected to the anode 2. When it is desired to liberate the caesium &c., the disc 6 is heated by a high-frequency current. The edge of the disc becomes heated first, and causes the ends of the capillary tubes to crack without shattering or causing loose pieces, and the caesium &c. distils. The method may be used for forming a light-sensitive coating in a photo-electric cell, as described in Specification 303,476.
GB36865/28A 1927-12-14 1928-12-13 Improvements in electron discharge devices Expired GB302315A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US302315XA 1927-12-14 1927-12-14

Publications (1)

Publication Number Publication Date
GB302315A true GB302315A (en) 1930-03-13

Family

ID=21853203

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36865/28A Expired GB302315A (en) 1927-12-14 1928-12-13 Improvements in electron discharge devices

Country Status (1)

Country Link
GB (1) GB302315A (en)

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