GB380426A - Improvements in and relating to methods of insulating electric apparatus - Google Patents
Improvements in and relating to methods of insulating electric apparatusInfo
- Publication number
- GB380426A GB380426A GB20964/32A GB2096432A GB380426A GB 380426 A GB380426 A GB 380426A GB 20964/32 A GB20964/32 A GB 20964/32A GB 2096432 A GB2096432 A GB 2096432A GB 380426 A GB380426 A GB 380426A
- Authority
- GB
- United Kingdom
- Prior art keywords
- insulation
- coating
- rubber
- july
- mixtures
- 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
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
380,426. Insulation. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hovey, A. G. ; 227, 3rd Street, Scotia, New York U.S.A.) July 25, 1932, No. 20964. Convention date, July 25, 1931. [Class 36.] Conductors are provided with inorganic insulation, are coated with a temporary protective material, are wound into coils and the protective coating replaced by a rigid permanent inorganic insulation. In an embodiment, a copper wire is given a coating of oxide followed by a thin coat of alkyd resin. A coil is then wound and the resin volatilized by heating for two hours at a temperature of 380-400‹ C. Final insulation is then applied and may consist of mixtures of water glass, asbestos, and flint ; plaster of Paris ; magnesium oxychloride and other hydraulic cements ; vitreous materials such as mixtures of lead borate and mica, cast molten glass or vitreous enamels. Rubber, particularly unvulcanized rubber, may be used in place of the alkyd resin, the rubber being removed by dissolving in hot aliphatic hydrocarbon solvent, e.g. transil oil, at 220‹ C. Metastyrene polymer may also be used as the protective coating, being removed by heating for two hours at 400‹ C. In place of the initial oxide coating, lead borate may be used. An aluminium conductor may be used and a copper conductor may be given a film of aluminium oxide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US380426XA | 1931-07-25 | 1931-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB380426A true GB380426A (en) | 1932-09-15 |
Family
ID=21897789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20964/32A Expired GB380426A (en) | 1931-07-25 | 1932-07-25 | Improvements in and relating to methods of insulating electric apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB380426A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1029064B (en) * | 1952-09-20 | 1958-04-30 | Gen Electric | Insulated electrical conductor with copper surface |
| DE969215C (en) * | 1952-09-20 | 1958-05-14 | Gen Electric | Insulated electrical conductors |
-
1932
- 1932-07-25 GB GB20964/32A patent/GB380426A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1029064B (en) * | 1952-09-20 | 1958-04-30 | Gen Electric | Insulated electrical conductor with copper surface |
| DE969215C (en) * | 1952-09-20 | 1958-05-14 | Gen Electric | Insulated electrical conductors |
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