GB619742A - Improvements in and relating to electrical coils and method of making the same - Google Patents

Improvements in and relating to electrical coils and method of making the same

Info

Publication number
GB619742A
GB619742A GB37776/46A GB3777646A GB619742A GB 619742 A GB619742 A GB 619742A GB 37776/46 A GB37776/46 A GB 37776/46A GB 3777646 A GB3777646 A GB 3777646A GB 619742 A GB619742 A GB 619742A
Authority
GB
United Kingdom
Prior art keywords
insulating
washer
spool
coil
wound
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
GB37776/46A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB619742A publication Critical patent/GB619742A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)

Abstract

619,742. Electric coils. BRITISH THOMSON HOUSTON CO., Ltd. Dec. 23, 1946, No. 37776. Convention date, Dec. 28, 1945. [Class 35] A spool-wound electric coil is wrapped in a sheet of impervious material which forms a container which is filled with a solventless fluid impregnant polymerizable to form an insulating solid. As shown, the spool, which may be of metal, fibre, &c., comprises a tubular body 1 on which is wound an absorbent fibrous covering, 4 of paper &c., and a pair of end cheeks 2, 3, an insulating washer 5 being inserted if the flange 3 is of metal. A thin insulating impervious resin washer 6 which rests on the washer 5 has its inner edge turned up to fit the spool and its outer edge turned up and cemented to a sheet 9 of the same material wound on the coil. In this way a cup is formed into which the insulating substance is poured through apertures 10 and an absorbent washer 7, which serves to retain impregnant to compensate for drainage or settling during baking. Examples of suitable insulating fluids which polymerize on baking to solid forms, without change of volume, are given. The coil may be finished by an armouring layer 11 of enamelled glass tape which also holds the terminals 8a.
GB37776/46A 1945-12-28 1946-12-23 Improvements in and relating to electrical coils and method of making the same Expired GB619742A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US619742XA 1945-12-28 1945-12-28

Publications (1)

Publication Number Publication Date
GB619742A true GB619742A (en) 1949-03-14

Family

ID=22039402

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37776/46A Expired GB619742A (en) 1945-12-28 1946-12-23 Improvements in and relating to electrical coils and method of making the same

Country Status (1)

Country Link
GB (1) GB619742A (en)

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