GB814892A - Improvements in or relating to means for shifting the electron beam of a cathode raytube - Google Patents

Improvements in or relating to means for shifting the electron beam of a cathode raytube

Info

Publication number
GB814892A
GB814892A GB1273255A GB1273255A GB814892A GB 814892 A GB814892 A GB 814892A GB 1273255 A GB1273255 A GB 1273255A GB 1273255 A GB1273255 A GB 1273255A GB 814892 A GB814892 A GB 814892A
Authority
GB
United Kingdom
Prior art keywords
plate
supported
magnet
carrying
aperture
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
GB1273255A
Inventor
William Lawson
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
Filing date
Publication date
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Publication of GB814892A publication Critical patent/GB814892A/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

Abstract

814,892. Electron beam deflecting apparatus. ELECTRIC & MUSICAL INDUSTRIES Ltd. May 1, 1956 [May 3, 1955], No. 12732/55. Class 39(1). A beam deflecting device comprises a plate 13 provided with an aperture for the tube neck 1, the plate either forming or carrying a magnet 16 setting up a beam deflecting flux across the aperture and the plate is supported for adjustment relatively to the neck on three parallel arms 7 each having resilient sleeves 9 preferably grooved as at 11 to engage the plate, so that the plate 13 may be rotatably adjusted and held in adjusted position by means of friction between its inner edge and the sleeves 9. The arms 7 are supported by an annulus 3 having a central aperture 4 for the tube, and the annulus 3 is secured to the deflecting coil casing 2 by screws 5. As shown a second plate 14 carrying a magnet 17 is similarly mounted and the two magnets 16, 17 may be relatively adjusted for beam-centreing purposes. In another embodiment the two magnets are supported on a single rubber member by means of grooves engaging the periphery of the magnet forming or carrying plates.
GB1273255A 1955-05-03 Improvements in or relating to means for shifting the electron beam of a cathode raytube Expired GB814892A (en)

Publications (1)

Publication Number Publication Date
GB814892A true GB814892A (en) 1959-06-17

Family

ID=1721168

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1273255A Expired GB814892A (en) 1955-05-03 Improvements in or relating to means for shifting the electron beam of a cathode raytube

Country Status (1)

Country Link
GB (1) GB814892A (en)

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