GB900170A - Improvements relating to indirectly heated cathodes - Google Patents

Improvements relating to indirectly heated cathodes

Info

Publication number
GB900170A
GB900170A GB15588/60A GB1558860A GB900170A GB 900170 A GB900170 A GB 900170A GB 15588/60 A GB15588/60 A GB 15588/60A GB 1558860 A GB1558860 A GB 1558860A GB 900170 A GB900170 A GB 900170A
Authority
GB
United Kingdom
Prior art keywords
air
cathode
pipe
spray gun
coating
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
GB15588/60A
Inventor
Kenneth Nash Knight Willmott
Malcolm Reginald Farrell
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB15588/60A priority Critical patent/GB900170A/en
Priority to US106593A priority patent/US3216856A/en
Priority to DEA37329A priority patent/DE1130081B/en
Priority to FR860629A priority patent/FR1288492A/en
Publication of GB900170A publication Critical patent/GB900170A/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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature

Abstract

<PICT:0900170/III/1> The internal surface of a tubular cathode is coated with refractory insulating material by blowing a vapour suspension of this material through the interior of the cathode and heating to stove the coating. The coating material may be alumina or magnesium oxide with a binder, e.g. ethyl silicate, suspended in a liquid vapour, e.g. methylated spirits and/or acetone. As shown, the cathode 1 is supported, in a block 2 by use of permanent magnet 3, between a spray gun 4 and an exhaust tube 7 up which a jet of air is blown from air line 8. In the spray gun, Fig. 2 (not shown), air from pipe 5 is fed through an annular duct surrounding a pipe 6 up which coating material is sucked to be entrained by the air flow in the region of nozzle 11.
GB15588/60A 1960-05-03 1960-05-03 Improvements relating to indirectly heated cathodes Expired GB900170A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB15588/60A GB900170A (en) 1960-05-03 1960-05-03 Improvements relating to indirectly heated cathodes
US106593A US3216856A (en) 1960-05-03 1961-05-01 Method of preparing indirectly heated cathodes
DEA37329A DE1130081B (en) 1960-05-03 1961-05-02 Process for the production of an indirectly heated cathode of an electron tube
FR860629A FR1288492A (en) 1960-05-03 1961-05-03 Further development of indirectly heated cathodes for electron tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15588/60A GB900170A (en) 1960-05-03 1960-05-03 Improvements relating to indirectly heated cathodes

Publications (1)

Publication Number Publication Date
GB900170A true GB900170A (en) 1962-07-04

Family

ID=10061816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15588/60A Expired GB900170A (en) 1960-05-03 1960-05-03 Improvements relating to indirectly heated cathodes

Country Status (3)

Country Link
US (1) US3216856A (en)
DE (1) DE1130081B (en)
GB (1) GB900170A (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2079893A (en) * 1937-05-11 Method of making lamps and tubes
US577496A (en) * 1897-02-23 Roughsedge wallwork and arthur collings wells
US1719988A (en) * 1923-01-26 1929-07-09 Westinghouse Lamp Co Electron device and the like adapted for alternating current
US1826510A (en) * 1928-09-15 1931-10-06 Westinghouse Lamp Co Refractory insulator for electron discharge devices
NL72904C (en) * 1946-01-16
US2794418A (en) * 1954-01-20 1957-06-04 Pittsburgh Plate Glass Co Apparatus for spray coating surfaces
US3011911A (en) * 1958-04-16 1961-12-05 Murray Corp Bowl trapway glazing machine
US3096211A (en) * 1959-03-31 1963-07-02 Emi Ltd Alkali metal generators
US3041210A (en) * 1959-12-02 1962-06-26 Tung Sol Electric Inc Method of making cold cathodes for vacuum tubes and article
US3078186A (en) * 1960-07-26 1963-02-19 Westinghouse Electric Corp Ceramic potting composition and method of encapsulating an electrical article therewith

Also Published As

Publication number Publication date
DE1130081B (en) 1962-05-24
US3216856A (en) 1965-11-09

Similar Documents

Publication Publication Date Title
DK276088A (en) PROCEDURE FOR REDUCING FLAME TEMPERATURE IN A BURNER AND A BURNER FOR USING THE PROCEDURE
GB438782A (en) Process for the manufacture of articles containing or consisting of silica, and to articles produced thereby
GB1061042A (en) Improvements in the methods for the production of vitreous silica
GB680217A (en) Improvements in and relating to methods of and apparatus for forming silica and for coating lamp bulbs
GB900170A (en) Improvements relating to indirectly heated cathodes
US2540256A (en) Ventilated arc
GB802910A (en) Improvements in or relating to electric incandescent lamps
GB1108498A (en) Improvements in and relating to degasification of metals
GB1017329A (en) Improvements in or relating to a burner
GB614725A (en) Improvements in or relating to sandblasting
GB888953A (en) Electrostatic precipitators
GB914914A (en) Improvements in apparatus for forming fibres
GB629368A (en) Improvements in water cooling towers
GB923869A (en) Flame spray gun and nozzle extension therefor
GB602919A (en) Improvements in or relating to gas burners
GB562062A (en) Improvements in or relating to gas burners and the like
GB973278A (en) Improvements relating to burners for cowper heaters
GB725693A (en) Improvements in or relating to means for centring electron guns
GB322548A (en) Improvements in or connected with &#34;soldering irons&#34;
GB911831A (en) Improvements in wire enamelling ovens
GB527725A (en) Improvements in and relating to the surface hardening of metal articles
GB501162A (en) Improvements in and relating to oven heating units
GB202604A (en) Improvements in apparatus for spraying metals and other fusible substances
GB925023A (en) Improvements in or relating to methods of and apparatus for internally coating hollow vessels
GB838331A (en) Improvements in oil burners for furnaces