GB622393A - Improvements in and relating to electric coils - Google Patents

Improvements in and relating to electric coils

Info

Publication number
GB622393A
GB622393A GB7468/47A GB746847A GB622393A GB 622393 A GB622393 A GB 622393A GB 7468/47 A GB7468/47 A GB 7468/47A GB 746847 A GB746847 A GB 746847A GB 622393 A GB622393 A GB 622393A
Authority
GB
United Kingdom
Prior art keywords
coil
insulation
electric coils
layer
march
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
GB7468/47A
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 GB622393A publication Critical patent/GB622393A/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
    • H01F41/127—Encapsulating or impregnating

Abstract

622,393. Electric coils. BRITISH THOMSON HOUSTON CO., Ltd. March 18, 1947, No. 7468. Convention date, March 19, 1946. [Classes 35 and 38 (ii)] A multi-layer coil has the inter-layer insulation curved around and back over the edges of the outer layer and the coil is embedded in plastic insulation. As shown, the secondary winding 6 of a transformer is separated from the primary 5 by layers of crepe paper 7 having the margins folded over as at 8 and the entire coil is embedded in insulation 9 applied in the liquid state and hardened by a process described. Specification 540,168, [Group IV], is referred to.
GB7468/47A 1946-03-19 1947-03-18 Improvements in and relating to electric coils Expired GB622393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US655560A US2478633A (en) 1946-03-19 1946-03-19 Electric coil

Publications (1)

Publication Number Publication Date
GB622393A true GB622393A (en) 1949-05-02

Family

ID=24629384

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7468/47A Expired GB622393A (en) 1946-03-19 1947-03-18 Improvements in and relating to electric coils

Country Status (2)

Country Link
US (1) US2478633A (en)
GB (1) GB622393A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324532A (en) * 1967-06-13 Method of making encased magnetic core

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948051A (en) * 1952-09-20 1960-08-09 Eisler Paul Method of manufacturing an electrically conductive winding pattern
US2856639A (en) * 1953-04-13 1958-10-21 Bernard F Forrest Method of encasing electric coils
US2944235A (en) * 1957-03-21 1960-07-05 Melville F Peters High temperature coil structure
US3105287A (en) * 1957-05-08 1963-10-01 Rea Magnet Wire Company Inc Insulated wire particularly for coils and the manufacture thereof
US3119085A (en) * 1960-09-26 1964-01-21 Kirkhof Mfg Corp Welding transformer
US3243752A (en) * 1962-03-07 1966-03-29 Allen Bradley Co Encapsulated supported coils
CN101901674B (en) * 2009-05-25 2012-09-05 上海飞晶电气股份有限公司 Method for enhancing insulativity and mechanical strength of high-tension coil of amorphous alloy transformer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1427324A (en) * 1913-02-11 1922-08-29 Vedovelli Priestley & Co Soc Process for manufacturing electric transformers of small power
US1485289A (en) * 1922-04-20 1924-02-26 Gen Electric Electric coil and method of making same
US1675419A (en) * 1927-02-09 1928-07-03 Us Electrical Mfg Company Process of insulating motor windings
US1970406A (en) * 1934-03-13 1934-08-14 Gen Electric Wire coil
US2116318A (en) * 1935-07-31 1938-05-03 Du Pont Electrical equipment
US2194338A (en) * 1938-01-18 1940-03-19 Gen Electric High voltage winding
US2435093A (en) * 1946-12-07 1948-01-27 Melville F Mitschrich Electrical insulation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324532A (en) * 1967-06-13 Method of making encased magnetic core

Also Published As

Publication number Publication date
US2478633A (en) 1949-08-09

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