GB464637A - Improvements in or relating to magnetic deflecting means for cathode-ray tubes - Google Patents

Improvements in or relating to magnetic deflecting means for cathode-ray tubes

Info

Publication number
GB464637A
GB464637A GB28985/35A GB2898535A GB464637A GB 464637 A GB464637 A GB 464637A GB 28985/35 A GB28985/35 A GB 28985/35A GB 2898535 A GB2898535 A GB 2898535A GB 464637 A GB464637 A GB 464637A
Authority
GB
United Kingdom
Prior art keywords
tube
magnet
portions
cathode
around
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
GB28985/35A
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbH filed Critical Fernseh GmbH
Publication of GB464637A publication Critical patent/GB464637A/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)

Abstract

464,637. Magnets. FERNSEH AKT.- GES. Oct. 21, 1935, Nos. 28985 and 28986. Convention dates, Oct. 19, 1934 and Feb. 28, 1935. [Class 35] [Also in Group XL] Cathode rays are deflected by two semicircular magnetic portions 1, 3 coaxial with the cathode-ray tube 2, intersecting a common plane normal tc the axis of the tube and mutually adjustable through 360‹. One or both of the portions 1, 3 are permanently magnetized to form poles at the ends, and the internal radius of one is approximately equal to the external radius of the other. One at least of the portions may be a steel band sprung around the tube. The portions 1, 2 are held in position by end rings on an insulating tube which is pushed over the neck of the tube 2 with a layer of felt interposed. A prior arrangement using a single semicircular magnet is described. Specification 451,604, [Group XL], is referred to. The Specification as open to inspection under Sect. 91 comprises also an arrangement in which the magnet is sprung around a layer of rubber, leather, cork &c., around the tube and may be glued to the tube after adjustment or adjusted by a knob convenient for operation by an observer viewing the screen of the tube. One knob may rotate the magnet and another rotate a screw to move the magnet axially. This subject-matter does not appear in the Specification as accepted.
GB28985/35A 1934-10-19 1935-10-21 Improvements in or relating to magnetic deflecting means for cathode-ray tubes Expired GB464637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE464637X 1934-10-19

Publications (1)

Publication Number Publication Date
GB464637A true GB464637A (en) 1937-04-21

Family

ID=6540288

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28985/35A Expired GB464637A (en) 1934-10-19 1935-10-21 Improvements in or relating to magnetic deflecting means for cathode-ray tubes

Country Status (2)

Country Link
FR (1) FR796502A (en)
GB (1) GB464637A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456474A (en) * 1946-07-02 1948-12-14 Gen Electric Electric discharge device
US2483407A (en) * 1940-08-02 1949-10-04 Int Standard Electric Corp Focusing arrangement for electron discharge devices of electron velocity modulation tpe
US2513929A (en) * 1948-05-21 1950-07-04 Gen Electric Beam centering device for cathode-ray tubes
US2544875A (en) * 1950-03-02 1951-03-13 Pye Ltd Combination centering, focusing, and deflecting device for beam of cathode-ray tubes
US2544898A (en) * 1949-12-31 1951-03-13 Guardian Electric Mfg Co Centering device for beams of cathode-ray tubes
US2552341A (en) * 1949-02-03 1951-05-08 Clarostat Mfg Co Inc Magnetic structure for use in ion-traps
US2553039A (en) * 1949-04-26 1951-05-15 Zenith Radio Corp Cathode-ray tube combined beam centering and deflection device
US2555850A (en) * 1948-01-28 1951-06-05 Nicholas D Glyptis Ion trap
US2569517A (en) * 1949-09-09 1951-10-02 Du Mont Allen B Lab Inc Magnet for cathode-ray tube ion traps
US2597298A (en) * 1949-02-18 1952-05-20 Pye Ltd Beam centering device for cathoderay tubes
US2646522A (en) * 1948-06-29 1953-07-21 Rca Corp Cathode-ray centering
GB2128812A (en) * 1982-09-20 1984-05-02 Us Energy Permanent magnet multipole with adjustable strength

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE516722A (en) * 1952-01-04

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483407A (en) * 1940-08-02 1949-10-04 Int Standard Electric Corp Focusing arrangement for electron discharge devices of electron velocity modulation tpe
US2456474A (en) * 1946-07-02 1948-12-14 Gen Electric Electric discharge device
US2555850A (en) * 1948-01-28 1951-06-05 Nicholas D Glyptis Ion trap
US2513929A (en) * 1948-05-21 1950-07-04 Gen Electric Beam centering device for cathode-ray tubes
US2646522A (en) * 1948-06-29 1953-07-21 Rca Corp Cathode-ray centering
US2552341A (en) * 1949-02-03 1951-05-08 Clarostat Mfg Co Inc Magnetic structure for use in ion-traps
US2597298A (en) * 1949-02-18 1952-05-20 Pye Ltd Beam centering device for cathoderay tubes
DE973714C (en) * 1949-02-18 1960-05-19 Pye Ltd Device for centering the electron beam of a cathode ray tube
US2553039A (en) * 1949-04-26 1951-05-15 Zenith Radio Corp Cathode-ray tube combined beam centering and deflection device
US2569517A (en) * 1949-09-09 1951-10-02 Du Mont Allen B Lab Inc Magnet for cathode-ray tube ion traps
US2544898A (en) * 1949-12-31 1951-03-13 Guardian Electric Mfg Co Centering device for beams of cathode-ray tubes
US2544875A (en) * 1950-03-02 1951-03-13 Pye Ltd Combination centering, focusing, and deflecting device for beam of cathode-ray tubes
GB2128812A (en) * 1982-09-20 1984-05-02 Us Energy Permanent magnet multipole with adjustable strength

Also Published As

Publication number Publication date
FR796502A (en) 1936-04-09

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