GB293853A - Improvements in or relating to electric heaters - Google Patents

Improvements in or relating to electric heaters

Info

Publication number
GB293853A
GB293853A GB17284/28A GB1728428A GB293853A GB 293853 A GB293853 A GB 293853A GB 17284/28 A GB17284/28 A GB 17284/28A GB 1728428 A GB1728428 A GB 1728428A GB 293853 A GB293853 A GB 293853A
Authority
GB
United Kingdom
Prior art keywords
casing
plate
introduction
resistance
flange
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
GB17284/28A
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.)
EDWIN NIBLOCK LIGHTFOOT
Original Assignee
EDWIN NIBLOCK LIGHTFOOT
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 EDWIN NIBLOCK LIGHTFOOT filed Critical EDWIN NIBLOCK LIGHTFOOT
Publication of GB293853A publication Critical patent/GB293853A/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
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins

Landscapes

  • Resistance Heating (AREA)

Abstract

293,853. Lightfoot, E. N. July 15, 1927, [Convention date]. Electric radiators.-Electric heaters comprise a helical resistance 15, Figs. 1 and 3, embedded in granular, refractory, insulating material enclosed by, and in direct and intimate contact with the walls of, a tubular part 10 of a casing formed by a sheet metal trough 12 and a sheet metal plate 14, the trough being bent outwards at right angles to form a flange. 11 at its sides and ends and the plate 14 being secured flat against the flange 11, for example, by foldedover margins, to form heat-dissipating vanes. Terminal pockets 13 in the plate 12 receive insulated terminals 16 between which the resistances 15 is stretched so that its turns are separated. Insulating washers 17 centre the resistance in the part 10 during the introduction of the granular insulation after the resistance is mounted in the casing. Magnesium oxide powder may be introduced through a temporary bent-up tongue in the plate 14 near one terminal pocket 13 and may be disintegrated and compacted by wetting it after its introduction into the casing, all spaces in the casing being filled with water, and by then heating in steam to 300‹ F. or above and drying in a furnace. Alundum or other chemically inert material may be mixed with the magnesium oxide and the casing may be vibrated during the introduction of the oxide.
GB17284/28A 1927-07-15 1928-06-14 Improvements in or relating to electric heaters Expired GB293853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US293853XA 1927-07-15 1927-07-15

Publications (1)

Publication Number Publication Date
GB293853A true GB293853A (en) 1929-04-25

Family

ID=21848737

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17284/28A Expired GB293853A (en) 1927-07-15 1928-06-14 Improvements in or relating to electric heaters

Country Status (1)

Country Link
GB (1) GB293853A (en)

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