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GB555231A - Electron discharge devices - Google Patents

Electron discharge devices

Info

Publication number
GB555231A
GB555231A GB4069/42A GB406942A GB555231A GB 555231 A GB555231 A GB 555231A GB 4069/42 A GB4069/42 A GB 4069/42A GB 406942 A GB406942 A GB 406942A GB 555231 A GB555231 A GB 555231A
Authority
GB
United Kingdom
Prior art keywords
gap
cathode
annular
concentrating
accelerating
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
GB4069/42A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB555231A publication Critical patent/GB555231A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/029—Schematic arrangements for beam forming
    • 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
    • Y10S164/00—Metal founding
    • Y10S164/04—Dental

Landscapes

  • Microwave Tubes (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

555,231. Cathode-ray tubes. STANDARD TELEPHONES & CABLES, Ltd. March 27, 1942, No. 4069. Convention date, March 29, 1941. [Class 39 (i)] Hollnw electron beams are produced by an annular cathode co-acting with a concentrating and accelerating electrode having annular gaps. As shown in the drawing the cathode is in the form of an annular plate 15 with a central recess 16 coated with thermionically emissive material, the sides of the recess being raised to prevent creepage of the coating material during operation. A multi-turn heating coil 25 embedded in insulating material 26 is carried in a metal casing 27, which is mounted in two nested heat shields 28, 29. The concentrating electrode consists of two annular plates 17a, 17b, spaced to form a gap 18, the sides of the gap being stepped as shown. The accelerating anode is formed of two annular plates 19a, 19b spaced to form an annular gap 20 in line with the gap 18 and the emissive part of the cathode. The edges of the gap 20 have flanges depending into the gap 18, and the emissive surface of the cathode is curved to a radius struck from a point in the gap 20. External and internal flanges 23, 24 on the concentrating and accelerating electrodes enclose the cathode and concentrating electrode respectively. The parts of the assembly are supported on a glass annulus 30 and multi-legged glass member 31 by stiff wires. When assembled in a discharge device, the beam forming elements are associated with a target and control electrodes, Fig. 1 (not shown). Specification 545,835 is referred to.
GB4069/42A 1941-03-29 1942-03-27 Electron discharge devices Expired GB555231A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US385817A US2321886A (en) 1941-03-29 1941-03-29 Electron discharge device

Publications (1)

Publication Number Publication Date
GB555231A true GB555231A (en) 1943-08-11

Family

ID=23522994

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4069/42A Expired GB555231A (en) 1941-03-29 1942-03-27 Electron discharge devices

Country Status (2)

Country Link
US (1) US2321886A (en)
GB (1) GB555231A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058027A (en) * 1949-02-09 1962-10-09 Raytheon Co Cylindrical beam cathode ray tube
US2573287A (en) * 1950-06-23 1951-10-30 Rauland Corp Electron gun for cathode-ray tubes
US2994801A (en) * 1959-06-05 1961-08-01 Stauffer Chemical Co Electron beam generation
US3087211A (en) * 1960-05-27 1963-04-30 Stauffer Chemical Co Electron-beam furnace with opposedfield magnetic beam guidance
US3105275A (en) * 1960-05-27 1963-10-01 Stauffer Chemical Co Electron-beam furnace with double-coil magnetic beam guidance
US3080626A (en) * 1960-05-27 1963-03-12 Stauffer Chemical Co Electron-beam furnace with magnetic guidance and flux concentrator
US3040112A (en) * 1960-06-03 1962-06-19 Stauffer Chemical Co Electron-beam furnace with beam emission suppressors
US3101515A (en) * 1960-06-03 1963-08-27 Stauffer Chemical Co Electron beam furnace with magnetically guided axial and transverse beams

Also Published As

Publication number Publication date
US2321886A (en) 1943-06-15

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