GB153701A - Improvements in heating elements for electric furnaces - Google Patents

Improvements in heating elements for electric furnaces

Info

Publication number
GB153701A
GB153701A GB2068819A GB2068819A GB153701A GB 153701 A GB153701 A GB 153701A GB 2068819 A GB2068819 A GB 2068819A GB 2068819 A GB2068819 A GB 2068819A GB 153701 A GB153701 A GB 153701A
Authority
GB
United Kingdom
Prior art keywords
muffle
grid
bends
resistance
grooves
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
GB2068819A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2068819A priority Critical patent/GB153701A/en
Publication of GB153701A publication Critical patent/GB153701A/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
    • H05B3/62—Heating elements specially adapted for furnaces
    • H05B3/66—Supports or mountings for heaters on or in the wall or roof

Landscapes

  • Furnace Details (AREA)

Abstract

153,701. Smalley, E. L. Aug. 22, 1919. Resistance furnaces.-A removable heating-unit for a crucible or other furnace consists of a hollow muffle with longitudinal grooves on its exterior surface, and a preformed resistance grid of stout material, the parallel lengths of which are adapted to fit in the grooves. The muffle may be of circular, rectangular, or other section. As shown in Fig. 1, a grid :resistance 6 is mounted in grooves on a tubular muffle 5 arranged inside a housing 1, the bends of the grid being carried by notched supports 10, which may be moulded into the housing. The grid may be expanded by heat to facilitate fitting on the muffle. In a modification for use in a crucible furnace, the muffle is arranged vertically and has cylindrical collars extending at the ends. In another arrangement, Fig. 8, a rectangular muffle is formed in sections 19 the ends of which are recessed to receive the bends. The grid may lie over a part only of the muffle, and the lengths between the bends may be other than straight.
GB2068819A 1919-08-22 1919-08-22 Improvements in heating elements for electric furnaces Expired GB153701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2068819A GB153701A (en) 1919-08-22 1919-08-22 Improvements in heating elements for electric furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2068819A GB153701A (en) 1919-08-22 1919-08-22 Improvements in heating elements for electric furnaces

Publications (1)

Publication Number Publication Date
GB153701A true GB153701A (en) 1920-11-18

Family

ID=10150014

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2068819A Expired GB153701A (en) 1919-08-22 1919-08-22 Improvements in heating elements for electric furnaces

Country Status (1)

Country Link
GB (1) GB153701A (en)

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