US1675764A - Sparking plug - Google Patents

Sparking plug Download PDF

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Publication number
US1675764A
US1675764A US206763A US20676327A US1675764A US 1675764 A US1675764 A US 1675764A US 206763 A US206763 A US 206763A US 20676327 A US20676327 A US 20676327A US 1675764 A US1675764 A US 1675764A
Authority
US
United States
Prior art keywords
insulator
sparking plug
sparking
openings
casing
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 - Lifetime
Application number
US206763A
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English (en)
Inventor
Mickel Georg
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
Application granted granted Critical
Publication of US1675764A publication Critical patent/US1675764A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01T13/00—Sparking plugs
    • H01T13/02—Details
    • H01T13/16—Means for dissipating heat

Definitions

  • This invention relates to sparking lugs for internal combustion engines of any d.
  • the insulator has in its middle thickened portion'a circular groove by which an air chamber is formed which extends around the insulator.
  • This air-chamber communicates with the atmosphere through openings in the sparking plug body, suitable devices being arranved'to regulate said openings so that they migllit be closed partly or completely.
  • ⁇ Another characteristic feature ofthe invention is that' the metal sleeve which encloses the lower portion of the insulator extends from the point of the insulator into said nir-chamber.
  • Fig. l is a longitudinal section.
  • Fig. 2 shows in elevation the complete sparking plug with fully opened regulating envelope.
  • the middle portion of the insulator a which is of greater diameter than the other parts of the same, has a circular groove d of. curved cross section. Owing to this groove the insulator is separated into an 40 upper conical portion b and a lower conical portion c. The groove forms an air chamber d which extends around the insulator.
  • the lower port-ion of the insulator is covered by a tightly fitting metal sleeve e of copper, aluminum or the like. This metal sleeve. e extends from the point of the insulator u to the air-chamber al.
  • the metal sleeve e presents further the advantage lthat it deflects the heat from the lowermost portion of the insulator towards the air chamber d so that any accumulation of heat in the lower portion of the insulator is avoided.
  • the metal sleeve forms, for instance, a heat transmitter and prevents self-ignition owing to the point of the insulator getting red hot and insulator defects.
  • Openings g in the sparking plug casing f serve further for cooling the insulator.
  • nir cooling is adjustable owing to an envelope It mounted on the sparking plug-casing so that it can be turned around the same.
  • This regulating envelope l1. has apertures z', slits or holes, which correspond with the openings g in the sparking plug casing.
  • the regulating envelope la can be turned around the insulator casing without removing the sparking plug from the engine.
  • the turning movement of the regulating envelope li is limited by a stoppin k.
  • the cooling eii'ect can be regu ated in accordance with the conditions of temperature in the engine. To avoid accidentaldlsplacing of the regulating envelope h it is securely held by a split resilient ring m.
  • i,engines comprising in combination an insulator having a circular groove 1n its middle portion of greaterdiameter than the remainder and forming an air chamber around the insulator', a sparking plug body in which said insulator is located and having openings in the form of-slots, ametal sleeve tightly fitting over the lowermost portion of the insulator and extending up to said air chamber, and a metal sleeve mounted on said sparking plug casino so that it can turn around the same said regulating envelope having openings 1in-responding with said .openings in the sparking plug casing which can be closed partly or entirely.

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  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
US206763A 1926-10-19 1927-07-18 Sparking plug Expired - Lifetime US1675764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE639366X 1926-10-19

Publications (1)

Publication Number Publication Date
US1675764A true US1675764A (en) 1928-07-03

Family

ID=6579840

Family Applications (1)

Application Number Title Priority Date Filing Date
US206763A Expired - Lifetime US1675764A (en) 1926-10-19 1927-07-18 Sparking plug

Country Status (4)

Country Link
US (1) US1675764A (de)
AT (1) AT113223B (de)
CH (1) CH129683A (de)
FR (1) FR639366A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489410A (en) * 1946-11-25 1949-11-29 Lewis F Hahn Shielded spark plug
WO2007057239A1 (de) * 2005-09-16 2007-05-24 Robert Bosch Gmbh Zündkerze

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489410A (en) * 1946-11-25 1949-11-29 Lewis F Hahn Shielded spark plug
WO2007057239A1 (de) * 2005-09-16 2007-05-24 Robert Bosch Gmbh Zündkerze
US20100007257A1 (en) * 2005-09-16 2010-01-14 Thomas Kaiser Spark Plug

Also Published As

Publication number Publication date
AT113223B (de) 1929-05-10
FR639366A (fr) 1928-06-20
CH129683A (de) 1929-01-02

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