GB749429A - Improvements in the manufacture of electron emissive cathodes - Google Patents

Improvements in the manufacture of electron emissive cathodes

Info

Publication number
GB749429A
GB749429A GB3584754A GB3584754A GB749429A GB 749429 A GB749429 A GB 749429A GB 3584754 A GB3584754 A GB 3584754A GB 3584754 A GB3584754 A GB 3584754A GB 749429 A GB749429 A GB 749429A
Authority
GB
United Kingdom
Prior art keywords
alginate
manufacture
emissive
coating
electron emissive
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
GB3584754A
Inventor
Maurice Arthur Carless
Bernard Nelson Watts
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
Priority to GB3584754A priority Critical patent/GB749429A/en
Publication of GB749429A publication Critical patent/GB749429A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material

Abstract

749,429. Cathode materials and processing. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 10, 1954, No. 35847/54. Class 39 (1). The adhesion of the emissive coating to a cathode base is improved by incorporating a water-soluble salt of alginic acid. Suitable substances are ammonium alginate or that known under the Registered Trade Mark " Manucol Ester ES/KM. " The alginate may be mixed with the emissive material before coating, or an already prepared emissive coating may then be dipped into the alginate solution. Examples are given with specified proportions.
GB3584754A 1954-12-10 1954-12-10 Improvements in the manufacture of electron emissive cathodes Expired GB749429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3584754A GB749429A (en) 1954-12-10 1954-12-10 Improvements in the manufacture of electron emissive cathodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3584754A GB749429A (en) 1954-12-10 1954-12-10 Improvements in the manufacture of electron emissive cathodes

Publications (1)

Publication Number Publication Date
GB749429A true GB749429A (en) 1956-05-23

Family

ID=10382170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3584754A Expired GB749429A (en) 1954-12-10 1954-12-10 Improvements in the manufacture of electron emissive cathodes

Country Status (1)

Country Link
GB (1) GB749429A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895854A (en) * 1956-09-28 1959-07-21 Philco Corp Method of making cathode assemblies and products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895854A (en) * 1956-09-28 1959-07-21 Philco Corp Method of making cathode assemblies and products

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