GB809664A - Improvements relating to demagnetising devices - Google Patents

Improvements relating to demagnetising devices

Info

Publication number
GB809664A
GB809664A GB1698956A GB1698956A GB809664A GB 809664 A GB809664 A GB 809664A GB 1698956 A GB1698956 A GB 1698956A GB 1698956 A GB1698956 A GB 1698956A GB 809664 A GB809664 A GB 809664A
Authority
GB
United Kingdom
Prior art keywords
demagnetising
devices
improvements relating
demagnetizing
weaire
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
GB1698956A
Inventor
James Marshall Carter
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.)
WRIGHT AND WEAIRE Ltd
Original Assignee
WRIGHT AND WEAIRE 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 WRIGHT AND WEAIRE Ltd filed Critical WRIGHT AND WEAIRE Ltd
Priority to GB1698956A priority Critical patent/GB809664A/en
Publication of GB809664A publication Critical patent/GB809664A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/465—Arrangements for demagnetisation of heads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/006—Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material

Landscapes

  • Magnetic Heads (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

809,664. Demagnetizing apparatus. WRIGHT & WEAIRE Ltd. May 30, 1957 [June 1, 1956], No. 16989/56. Class 35. A device for demagnetizing the heads of recording or reproducing apparatus comprises a coil 12 on one end of an elongated saturable core, the other end being reduced in size to enable it to be brought close up to the head without dismantling other components. The tip may be shaped as shown.
GB1698956A 1956-06-01 1956-06-01 Improvements relating to demagnetising devices Expired GB809664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1698956A GB809664A (en) 1956-06-01 1956-06-01 Improvements relating to demagnetising devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1698956A GB809664A (en) 1956-06-01 1956-06-01 Improvements relating to demagnetising devices

Publications (1)

Publication Number Publication Date
GB809664A true GB809664A (en) 1959-02-25

Family

ID=10087222

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1698956A Expired GB809664A (en) 1956-06-01 1956-06-01 Improvements relating to demagnetising devices

Country Status (1)

Country Link
GB (1) GB809664A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030002A (en) * 1975-11-06 1977-06-14 Alexandrovich George Sen Degausser
NL7810076A (en) * 1978-09-08 1980-03-11 Tdk Electronics Co Ltd COMPACT, MANAGEMENT DEMAGNETIZING DEVICE.
GB2158758A (en) * 1984-05-17 1985-11-20 Welding Inst Arc welding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030002A (en) * 1975-11-06 1977-06-14 Alexandrovich George Sen Degausser
NL7810076A (en) * 1978-09-08 1980-03-11 Tdk Electronics Co Ltd COMPACT, MANAGEMENT DEMAGNETIZING DEVICE.
GB2158758A (en) * 1984-05-17 1985-11-20 Welding Inst Arc welding

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