GB234425A - Improved method of and means for preserving the magnetism in permanent magnets - Google Patents

Improved method of and means for preserving the magnetism in permanent magnets

Info

Publication number
GB234425A
GB234425A GB570525A GB570525A GB234425A GB 234425 A GB234425 A GB 234425A GB 570525 A GB570525 A GB 570525A GB 570525 A GB570525 A GB 570525A GB 234425 A GB234425 A GB 234425A
Authority
GB
United Kingdom
Prior art keywords
pieces
pole
permanent magnets
magnet
keeper
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
GB570525A
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.)
Ferranti International PLC
Original Assignee
Ferranti 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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB570525A priority Critical patent/GB234425A/en
Publication of GB234425A publication Critical patent/GB234425A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01F13/003—Methods and devices for magnetising permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)

Abstract

234,425. Ferranti, S. Z. de, and Ferranti, Ltd. March 3, 1924 Olagneto - electric machines; magnets. -In electric meters, and other electrical apparatus employing permanent magnets associated with softiron pole-pieces, a magnetic transfer element is provided by means of which the magnet may be removed from its operative position without altering substantially the flux distribution in the steel. As shown in the Figure, the permanent magnets a of a meroury motor meter make close contact with softiron pole-pieces b projecting above and below the mercury bath c. The limbs d, e of the soft-iron keeper f are shaped to fit the pole-pieces, and the magnet is removed by sliding it on to the keeper. In an alternative arrangement, the extremities of the magnet may be provided with soft-iron pole-pieces and the keeper contacts with the sides of these pole-pieces.
GB570525A 1924-03-03 1924-03-03 Improved method of and means for preserving the magnetism in permanent magnets Expired GB234425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB570525A GB234425A (en) 1924-03-03 1924-03-03 Improved method of and means for preserving the magnetism in permanent magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB570525A GB234425A (en) 1924-03-03 1924-03-03 Improved method of and means for preserving the magnetism in permanent magnets

Publications (1)

Publication Number Publication Date
GB234425A true GB234425A (en) 1925-05-28

Family

ID=9801079

Family Applications (1)

Application Number Title Priority Date Filing Date
GB570525A Expired GB234425A (en) 1924-03-03 1924-03-03 Improved method of and means for preserving the magnetism in permanent magnets

Country Status (1)

Country Link
GB (1) GB234425A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023180A (en) * 1976-01-12 1977-05-10 Zenner Walter J Dot printer with electrically propelled ink

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023180A (en) * 1976-01-12 1977-05-10 Zenner Walter J Dot printer with electrically propelled ink

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