GB493599A - Improvements in and relating to ceramic structures such as electric insulators and the like - Google Patents
Improvements in and relating to ceramic structures such as electric insulators and the likeInfo
- Publication number
- GB493599A GB493599A GB8703/38A GB870338A GB493599A GB 493599 A GB493599 A GB 493599A GB 8703/38 A GB8703/38 A GB 8703/38A GB 870338 A GB870338 A GB 870338A GB 493599 A GB493599 A GB 493599A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- glaze
- weight
- oxide
- felspar
- 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
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/50—Insulators or insulating bodies characterised by their form with surfaces specially treated for preserving insulating properties, e.g. for protection against moisture, dirt, or the like
Landscapes
- Insulators (AREA)
Abstract
493,599. Insulators. BRITISH THOMSON-HOUSTON CO., Ltd. March 21, 1938, No. 8703. Convention date, March 20, 1937. Drawings to Specification. [Class 36]. [Also in Groups XXIII and X] A ceramic body, particularly an electric insulator made of porcelain, is covered with a glaze which is under compression throughout the normal operating-range of temperatures, and has a coefficient of expansion less than that of the body. The body may be made from a mixture composed of 24À4 per cent by weight of flint, 30 per cent of potash felspar, 17À6 per cent of kaolin, and 28 per cent of ball clay. A suitable glaze may be made from a mixture composed of 32À1 per cent by weight of flint, 22À1 per cent of felspar, 14À5 per cent of whiting, 12 per cent of ball clay, 5À2 per cent of zinc oxide, 2À1 per cent of magnesite, and 12 per cent of kaolin. In general, the glaze should be made from a mixture in which the percentage by weight of silica is of the order of five times the amount of potassium oxide, sodium oxide and calcium oxide taken together. Specification 309,426, [Class 36], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US493599XA | 1937-03-20 | 1937-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB493599A true GB493599A (en) | 1938-10-11 |
Family
ID=21959398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8703/38A Expired GB493599A (en) | 1937-03-20 | 1938-03-21 | Improvements in and relating to ceramic structures such as electric insulators and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB493599A (en) |
-
1938
- 1938-03-21 GB GB8703/38A patent/GB493599A/en not_active Expired
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