GB341938A - Improvements relating to electric heating elements - Google Patents

Improvements relating to electric heating elements

Info

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
Application number
GB3133829A
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB3133829A priority Critical patent/GB341938A/en
Publication of GB341938A publication Critical patent/GB341938A/en
Expired legal-status Critical Current

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

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.
GB3133829A 1929-10-15 1929-10-15 Improvements relating to electric heating elements Expired GB341938A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007236A (en) * 1956-02-27 1961-11-07 Gen Electric Methods of making electric heating units

Cited By (1)

* Cited by examiner, † Cited by third party
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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