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 sameInfo
- 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
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.
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) |
-
1946
- 1946-12-23 GB GB37776/46A patent/GB619742A/en not_active Expired
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