GB821602A - Improvements in and relating to methods of manufacturing tubular sheathed electric heating elements - Google Patents

Improvements in and relating to methods of manufacturing tubular sheathed electric heating elements

Info

Publication number
GB821602A
GB821602A GB3679654A GB3679654A GB821602A GB 821602 A GB821602 A GB 821602A GB 3679654 A GB3679654 A GB 3679654A GB 3679654 A GB3679654 A GB 3679654A GB 821602 A GB821602 A GB 821602A
Authority
GB
United Kingdom
Prior art keywords
sheath
tube
heater wire
heating element
metallic magnesium
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
GB3679654A
Inventor
Gordon Henry Moule
John Thomas Urry
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
Priority to DENDAT1065538D priority Critical patent/DE1065538B/de
Application filed by Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB3679654A priority patent/GB821602A/en
Priority to FR1138156D priority patent/FR1138156A/en
Publication of GB821602A publication Critical patent/GB821602A/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
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals for heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
    • H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs
    • 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
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines
    • F23Q2007/004—Manufacturing or assembling methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)

Abstract

821,602. Electric heating elements. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. Dec. 13, 1955 [Dec. 20, 1954], No. 36796/54. Class 39(3) A method of manufacturing a tubular sheathed electric heating element of small diameter comprises the steps of inserting a heater coil within a tube formed from a flat strilp of metallic magnesium within a tube formed from a flat strip of metallic magnesium wound into a closely coiled helix, inserting the tube containing the heater coil into a tubular metal sheath, converting the metallic magnesium into magnesium oxide in situ and sealing both ends of the sheath to exclude moisture from the heater coil. The heating element shown constitutes part of a glow plug suitable for starting a diesel engine. In manufacturing the plug, a tube 6 formed of a helically coiled strip of metallic magnesium is placed over the heater wire 1 and the sheath 7 then placed over the tube 6 after which the element is subjected to heat treatment to convert the metallic magnesium to magnesium oxide in which the heater wire is firmly embedded. The upper end of the sheath 7 is pressed inwardly around a tail 2 of the heater wire to seal the sheath and an electrically conductive connection is made by brazing or welding. The tail 3 of the heater wire extends through a tube 4 and is connected to a screwed terminal which also seals the other end of the sheath. After assembly of the element the sheath 7 may be drawn through a die to more tightly compact the magnesium oxide about the heater wire and to reduce the size of the heating element. Alternatively, the heater wire may be more rigidly secured within the sheath by packing with loose sand or loose magnesium oxide. The plug is completed by closely fitting the sheath of the heating element inside an axially bored cylindrical plug body which may have an overall diameter of 0.383 inches, the diameter of the heating element being 0.117 inches. Specification 821,601 is referred to.
GB3679654A 1954-12-20 1954-12-20 Improvements in and relating to methods of manufacturing tubular sheathed electric heating elements Expired GB821602A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DENDAT1065538D DE1065538B (en) 1954-12-20
GB3679654A GB821602A (en) 1954-12-20 1954-12-20 Improvements in and relating to methods of manufacturing tubular sheathed electric heating elements
FR1138156D FR1138156A (en) 1954-12-20 1955-12-20 Process for manufacturing small diameter tubular sheath heating elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3679654A GB821602A (en) 1954-12-20 1954-12-20 Improvements in and relating to methods of manufacturing tubular sheathed electric heating elements

Publications (1)

Publication Number Publication Date
GB821602A true GB821602A (en) 1959-10-14

Family

ID=10391252

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3679654A Expired GB821602A (en) 1954-12-20 1954-12-20 Improvements in and relating to methods of manufacturing tubular sheathed electric heating elements

Country Status (3)

Country Link
DE (1) DE1065538B (en)
FR (1) FR1138156A (en)
GB (1) GB821602A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2196216B (en) * 1986-09-26 1990-01-10 Sanri Kk Heat-generating device for local heating of injection moulding synthetic resin
EP2429258A3 (en) * 2010-09-09 2012-10-10 Infinity Fluids Corporation Axial resistance sheathed heater

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630402C2 (en) * 1996-07-26 2000-12-28 Beru Ag Pole flame glow plug
DE29904994U1 (en) * 1999-03-18 2000-07-27 Scaritec Ag Muenchwilen Device for cutting hard foam
JP5102530B2 (en) * 2006-05-19 2012-12-19 日本特殊陶業株式会社 Glow plug and manufacturing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2196216B (en) * 1986-09-26 1990-01-10 Sanri Kk Heat-generating device for local heating of injection moulding synthetic resin
EP2429258A3 (en) * 2010-09-09 2012-10-10 Infinity Fluids Corporation Axial resistance sheathed heater
US8987640B2 (en) 2010-09-09 2015-03-24 Infinity Fluids Corp Axial resistance sheathed heater

Also Published As

Publication number Publication date
FR1138156A (en) 1957-06-11
DE1065538B (en)

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