GB742296A - Improvements in or relating to method of manufacturing electric heaters - Google Patents

Improvements in or relating to method of manufacturing electric heaters

Info

Publication number
GB742296A
GB742296A GB1355553A GB1355553A GB742296A GB 742296 A GB742296 A GB 742296A GB 1355553 A GB1355553 A GB 1355553A GB 1355553 A GB1355553 A GB 1355553A GB 742296 A GB742296 A GB 742296A
Authority
GB
United Kingdom
Prior art keywords
resistances
pressed
tube
relating
elements
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
GB1355553A
Inventor
William Rockwell Tuttle
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.)
Tuttle & Kift Inc
Original Assignee
Tuttle & Kift Inc
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 Tuttle & Kift Inc filed Critical Tuttle & Kift Inc
Priority to GB1355553A priority Critical patent/GB742296A/en
Publication of GB742296A publication Critical patent/GB742296A/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
    • H05B3/52—Apparatus or processes for filling or compressing insulating material in tubes

Landscapes

  • Resistance Heating (AREA)

Abstract

742,296. Making electric heating elements. TUTTLE & KIFT, Inc. May 14, 1953, No. 13555/53. Classes 83 (2) and 83 (4). [Also in Group XI] Forging.-Electric heating elements having a metal sheath 10 enclosing one or more conductors 12,13, embedded in granular, refractory insulation 11, the elements being spiral shape in plan, have a flat heating surface 22 with convex lateral margins 24, a convex wall surface 25 diverging from the surface 25 to the surface 22. The heater is formed by eccentrically positioning resistances 12, 13 in the tube 10 which is temporarily blocked at one end and filled with insulation 11, the other end being then hermetically sealed or temporarily blocked. The tube 10 is then pressed in a die to square crosssection, formed into a flat spiral, and then pressed between dies 40, 41 to give it a crosssection such as shown in Fig. 4. The face 22 is identified by a notch to ensure that the resistances 12, 13 are finally against the heating surface 22.
GB1355553A 1953-05-14 1953-05-14 Improvements in or relating to method of manufacturing electric heaters Expired GB742296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1355553A GB742296A (en) 1953-05-14 1953-05-14 Improvements in or relating to method of manufacturing electric heaters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1355553A GB742296A (en) 1953-05-14 1953-05-14 Improvements in or relating to method of manufacturing electric heaters

Publications (1)

Publication Number Publication Date
GB742296A true GB742296A (en) 1955-12-21

Family

ID=10025059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1355553A Expired GB742296A (en) 1953-05-14 1953-05-14 Improvements in or relating to method of manufacturing electric heaters

Country Status (1)

Country Link
GB (1) GB742296A (en)

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