GB341938A - Improvements relating to electric heating elements - Google Patents
Improvements relating to electric heating elementsInfo
- Publication number
- GB341938A GB341938A GB3133829A GB3133829A GB341938A GB 341938 A GB341938 A GB 341938A GB 3133829 A GB3133829 A GB 3133829A GB 3133829 A GB3133829 A GB 3133829A GB 341938 A GB341938 A GB 341938A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- class
- electricity
- magnesium
- pressing
- 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
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/16—Rigid-tube cables
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Eye Examination Apparatus (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
341,938. Wire resistances. SYKES, C., 12, Derbyshire Lane, NEEDHAM, W., 80, Victoria Road, both in Stretford, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London. Oct. 15, 1929, No. 31338. [Class 37.] A heating element is formed by placing a spirallywound resistance wire within a metal tube, placing a layer of magnesium inside the coil, or between the coil and the tube, or both, treating the magnesium with steam under pressure to convert it into magnesium hydroxide, and subsequently flattening the tube by pressing, rolling &c. so as to reduce its cross-section without increasing its length. Before pressing, the tube is plugged at the ends with steatite &c., through which the resistance wire passes. The tube, particularly if of nickel, may be heated during the pressing operation. The tube may be bent to any shape either during or after the pressing operation. Specifications 18685/14, 144,767, [both in Class 37, Electricity, Measuring &c.], 173,742, [Class 36, Electricity, Conducting &c.], and 273,939, [Class 37, Electricity, Measuring &c.], are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3133829A GB341938A (en) | 1929-10-15 | 1929-10-15 | Improvements relating to electric heating elements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3133829A GB341938A (en) | 1929-10-15 | 1929-10-15 | Improvements relating to electric heating elements |
Publications (1)
Publication Number | Publication Date |
---|---|
GB341938A true GB341938A (en) | 1931-01-15 |
Family
ID=10321642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3133829A Expired GB341938A (en) | 1929-10-15 | 1929-10-15 | Improvements relating to electric heating elements |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB341938A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3007236A (en) * | 1956-02-27 | 1961-11-07 | Gen Electric | Methods of making electric heating units |
-
1929
- 1929-10-15 GB GB3133829A patent/GB341938A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3007236A (en) * | 1956-02-27 | 1961-11-07 | Gen Electric | Methods of making electric heating units |
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