GB532479A - Improvements in and relating to x-ray apparatus - Google Patents

Improvements in and relating to x-ray apparatus

Info

Publication number
GB532479A
GB532479A GB25011/39A GB2501139A GB532479A GB 532479 A GB532479 A GB 532479A GB 25011/39 A GB25011/39 A GB 25011/39A GB 2501139 A GB2501139 A GB 2501139A GB 532479 A GB532479 A GB 532479A
Authority
GB
United Kingdom
Prior art keywords
tube
cathode
ntgen
constriction
anode
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
GB25011/39A
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 GB532479A publication Critical patent/GB532479A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/22—X-ray tubes specially designed for passing a very high current for a very short time, e.g. for flash operation

Abstract

532,479. R÷ntgen-ray tubes ; electric supply systems. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 31, 1939, No. 25011. Convention date, Sept. 1, 1938. [Class 39 (i)] [Also in Group XXXV] In a R÷ntgen-ray tube the discharge takes place in an ionizable medium and through a constriction to enable suitable high potentials to be established in the medium. A mercury pool cathode 12 may be used with keep-alive and starter electrodes 14, 16 ; a cooling coil 13 limits the pressure of the mercury vapour which may be between a fraction of a micron to several microns. A cathode spot anchoring ring 21 of molybdenum surrounds the electrode 16. A thermionic cathode with a neon filling may be used. The constriction is formed by orifices one in each of a number of plates (Fig. 4, not shown) extending across the tube or by an orifice 40 in a thin plate supported by a heavier one 35 sealed to the tube ; a water cooling coil 41 surrounds the plate 35. Shields 52, 53 and 54 surround the anode 29 which carries the tungsten target 30. A cooling system 25, 26 is provided for the anode. The tube is supplied from a source 42 through a resistance 43 and inductance 44 with a condenser 45 and potential limiting spark gap 47 in parallel across the tube. A local circuit 18, 19, 22 is used for the keep-alive electrode 14.
GB25011/39A 1938-09-01 1939-08-31 Improvements in and relating to x-ray apparatus Expired GB532479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US227927A US2206710A (en) 1938-09-01 1938-09-01 Pool-type X-ray tube

Publications (1)

Publication Number Publication Date
GB532479A true GB532479A (en) 1941-01-24

Family

ID=22855014

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25011/39A Expired GB532479A (en) 1938-09-01 1939-08-31 Improvements in and relating to x-ray apparatus

Country Status (5)

Country Link
US (1) US2206710A (en)
BE (1) BE436501A (en)
DE (1) DE766054C (en)
FR (1) FR859683A (en)
GB (1) GB532479A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429217A (en) * 1942-05-07 1947-10-21 Electronized Chem Corp Device for treatment of matters with high-speed electrons
US2438191A (en) * 1943-06-19 1948-03-23 Westinghouse Electric Corp High-pressure modulator tube
US2428616A (en) * 1943-11-02 1947-10-07 Philco Corp Electrical protective device
US2508529A (en) * 1948-03-06 1950-05-23 Bell Telephone Labor Inc Gaseous electronic discharge device
US2840632A (en) * 1952-06-02 1958-06-24 Henry W Parker Cathode spot television receiving system
US3254255A (en) * 1963-01-04 1966-05-31 Westinghouse Electric Corp Mercury vapor discharge device having a novel brazing alloy

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE566669C (en) * 1925-05-30 1932-12-19 Siemens & Halske Akt Ges Device for the intermittent interruption of electrical currents
CH161961A (en) * 1929-08-13 1933-05-31 Aeg Metal vapor rectifier with anode protection tube.
CH170211A (en) * 1932-03-03 1934-06-30 Meaf Mach En Apparaten Fab Nv Discharge tube with gas or steam filling.
AT143570B (en) * 1934-06-26 1935-11-25 Meaf Mach En Apparaten Fab Nv Vacuum discharge tube.

Also Published As

Publication number Publication date
US2206710A (en) 1940-07-02
FR859683A (en) 1940-12-24
DE766054C (en) 1952-12-22
BE436501A (en)

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