GB731451A - Improvements in or relating to arrangements for use with cathode ray tubes - Google Patents

Improvements in or relating to arrangements for use with cathode ray tubes

Info

Publication number
GB731451A
GB731451A GB26589/52A GB2658952A GB731451A GB 731451 A GB731451 A GB 731451A GB 26589/52 A GB26589/52 A GB 26589/52A GB 2658952 A GB2658952 A GB 2658952A GB 731451 A GB731451 A GB 731451A
Authority
GB
United Kingdom
Prior art keywords
plate
magnet
annulus
sleeve
cathode
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
GB26589/52A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB26589/52A priority Critical patent/GB731451A/en
Priority to US384894A priority patent/US2817034A/en
Priority to DEC8307A priority patent/DE1041170B/en
Priority to FR1085244D priority patent/FR1085244A/en
Publication of GB731451A publication Critical patent/GB731451A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/54—Arrangements for centring ray or beam

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

731,451. Cathode-ray tubes. COVILL, D. H. Oct. 13, 1953 [Oct. 23, 1952], No. 26589/52. Class 39 (1). For the correction of the centring of the electron beam in a cathode-ray, a ceramic permanent magnet annulus 12 forming part of the focusing system is surrounded by a magnetic, but not permanently magnetized, annulus 13 which can be both rotated axially and tilted diametrically relative to the annulus 12. The magnet 12 is glued to a non-magnetic plate 11 and is fitted to a non-magnetic sleeve 10 which is slidable on the neck of the cathode-ray tube. The annulus 13 is held by flexible members 15 diametrically fixed to a plate 16 which is rotatable within spring clips 17 fixed to the plate 11. The magnet is tiltable by the screw 20 and spring 22 which are secured to the plate 16. A plate 24 which is secured to a sleeve 25 carries a further permanent magnet 23 which with the aid of the magnet 12 concentrates the electron beam. Axial adjustment of the magnet 23 is produced when it is rotated, by the screws 26 in the sleeve 25 and spiral slots 27 in the sleeve 10.
GB26589/52A 1952-10-23 1952-10-23 Improvements in or relating to arrangements for use with cathode ray tubes Expired GB731451A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB26589/52A GB731451A (en) 1952-10-23 1952-10-23 Improvements in or relating to arrangements for use with cathode ray tubes
US384894A US2817034A (en) 1952-10-23 1953-10-08 Magnetic focussing field arrangements for cathode ray tubes
DEC8307A DE1041170B (en) 1952-10-23 1953-10-15 Arrangement for centering the light spot on the fluorescent screen of a cathode ray tube
FR1085244D FR1085244A (en) 1952-10-23 1953-10-17 Improvements to magnetic field concentrating devices for cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26589/52A GB731451A (en) 1952-10-23 1952-10-23 Improvements in or relating to arrangements for use with cathode ray tubes

Publications (1)

Publication Number Publication Date
GB731451A true GB731451A (en) 1955-06-08

Family

ID=10245993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26589/52A Expired GB731451A (en) 1952-10-23 1952-10-23 Improvements in or relating to arrangements for use with cathode ray tubes

Country Status (4)

Country Link
US (1) US2817034A (en)
DE (1) DE1041170B (en)
FR (1) FR1085244A (en)
GB (1) GB731451A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186561B (en) * 1960-07-06 1965-02-04 Magnetfab Bonn Gmbh Ring-shaped correction magnet for cathode ray tubes and method for manufacturing the correction magnet
US3906419A (en) * 1972-10-02 1975-09-16 Int Standard Electric Corp Adjustable deflection unit for television picture tubes

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102421A (en) * 1934-07-12 1937-12-14 Gen Electric Cathode ray oscillograph
GB530914A (en) * 1939-07-05 1940-12-24 Gen Electric Co Ltd Improvements in or relating to cathode ray tube assemblies
US2418487A (en) * 1944-03-31 1947-04-08 Bell Telephone Labor Inc Cathode ray magnetic focusing device
BE487122A (en) * 1948-02-07
US2513929A (en) * 1948-05-21 1950-07-04 Gen Electric Beam centering device for cathode-ray tubes
GB670021A (en) * 1949-02-18 1952-04-09 Patrick Richard James Court Improvements in beam centering devices for cathode ray tubes
GB670431A (en) * 1949-02-24 1952-04-16 Patrick Richard James Court Magnetic focussing device for cathode ray tubes
US2544898A (en) * 1949-12-31 1951-03-13 Guardian Electric Mfg Co Centering device for beams of cathode-ray tubes
US2533688A (en) * 1950-01-31 1950-12-12 Quam Nichols Company Focusing device
NL160744B (en) * 1950-05-04 Mengele & Soehne Masch Karl BENDING MACHINING EQUIPMENT.
US2581657A (en) * 1950-07-26 1952-01-08 Myron R Heppner Focusing and centering device for cathode-ray tubes
US2568668A (en) * 1950-08-18 1951-09-18 Best Mfg Co Inc Cathode-ray tube focusing device of the permanent magnet type
US2592185A (en) * 1950-12-09 1952-04-08 Quam Nichols Company Focusing device
US2580606A (en) * 1951-03-21 1952-01-01 Best Mfg Company Inc Cathode-ray tube focusing device

Also Published As

Publication number Publication date
FR1085244A (en) 1955-01-28
US2817034A (en) 1957-12-17
DE1041170B (en) 1958-10-16

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