GB259610A - Improvements in or relating to electric heating devices - Google Patents

Improvements in or relating to electric heating devices

Info

Publication number
GB259610A
GB259610A GB25191/26A GB2519126A GB259610A GB 259610 A GB259610 A GB 259610A GB 25191/26 A GB25191/26 A GB 25191/26A GB 2519126 A GB2519126 A GB 2519126A GB 259610 A GB259610 A GB 259610A
Authority
GB
United Kingdom
Prior art keywords
magnesium
powder
oxidized
layer
slots
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
GB25191/26A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Publication of GB259610A publication Critical patent/GB259610A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material

Landscapes

  • Resistance Heating (AREA)

Abstract

259,610. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Woodson, J. C.). Oct. 10, 1925, [Convention date]. Wire resistance, embedded and encased.-In a heating unit comprising a wire enclosed in a tubular casing filled with an insulating powder, such as magnesia or alundum, a layer of a substance which expands on oxidation, such as magnesium, is interposed between the casing and the powder and oxidized so as to compact the powder and secure good conduction of heat. In the form - shown, the magnesium tube 19 is formed with longitudinal slots outside and inside. The inner slots are filled with an oxidizing material 18, such as red lead, and steam is passed through the outer slots 20. The oxidizing material may be omitted and the magnesium oxidized by steam alone. The layer of magnesium may also be formed by a coiled ribbon.
GB25191/26A 1925-10-10 1926-10-09 Improvements in or relating to electric heating devices Expired GB259610A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US259610XA 1925-10-10 1925-10-10

Publications (1)

Publication Number Publication Date
GB259610A true GB259610A (en) 1927-01-06

Family

ID=21829038

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25191/26A Expired GB259610A (en) 1925-10-10 1926-10-09 Improvements in or relating to electric heating devices

Country Status (1)

Country Link
GB (1) GB259610A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198641A (en) * 1991-02-26 1993-03-30 Sakaguchi Dennetsu Kabushiki Kaisha Sheathed heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198641A (en) * 1991-02-26 1993-03-30 Sakaguchi Dennetsu Kabushiki Kaisha Sheathed heater

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