GB248915A - Improvements in spark plugs and method of making same - Google Patents

Improvements in spark plugs and method of making same

Info

Publication number
GB248915A
GB248915A GB569525A GB569525A GB248915A GB 248915 A GB248915 A GB 248915A GB 569525 A GB569525 A GB 569525A GB 569525 A GB569525 A GB 569525A GB 248915 A GB248915 A GB 248915A
Authority
GB
United Kingdom
Prior art keywords
casing
spark plugs
making same
plugs
outer end
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
GB569525A
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.)
Delco Electronics LLC
Original Assignee
AC Spark Plug Co
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 AC Spark Plug Co filed Critical AC Spark Plug Co
Priority to GB569525A priority Critical patent/GB248915A/en
Publication of GB248915A publication Critical patent/GB248915A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Spark Plugs (AREA)

Abstract

248,915. Marks, E. C. R., (A.C. Spark Plug Co.). March 2, 1925. Sparking - plugs. - In plugs of the kind in which the outer end 11 of the plug casing is turned over the outer end of an enlargement on the insulator, a circumferential groove 16 is formed in the wall of the casing. Further pressure is exerted on the turnedover end of the casing resulting in the deformation of the reduced part 17, electric current sufficient to soften the thin portion of the casing being then passed therethrough.
GB569525A 1925-03-02 1925-03-02 Improvements in spark plugs and method of making same Expired GB248915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB569525A GB248915A (en) 1925-03-02 1925-03-02 Improvements in spark plugs and method of making same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB569525A GB248915A (en) 1925-03-02 1925-03-02 Improvements in spark plugs and method of making same

Publications (1)

Publication Number Publication Date
GB248915A true GB248915A (en) 1926-03-18

Family

ID=9800895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB569525A Expired GB248915A (en) 1925-03-02 1925-03-02 Improvements in spark plugs and method of making same

Country Status (1)

Country Link
GB (1) GB248915A (en)

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