US2130208A - Sparking plug - Google Patents

Sparking plug Download PDF

Info

Publication number
US2130208A
US2130208A US128851A US12885137A US2130208A US 2130208 A US2130208 A US 2130208A US 128851 A US128851 A US 128851A US 12885137 A US12885137 A US 12885137A US 2130208 A US2130208 A US 2130208A
Authority
US
United States
Prior art keywords
plug
central electrode
sparking
bush
plug body
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
US128851A
Inventor
Vincent William John
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 US2130208A publication Critical patent/US2130208A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01T13/46—Sparking plugs having two or more spark gaps
    • H01T13/467—Sparking plugs having two or more spark gaps in parallel connection

Definitions

  • This invention relates to improvements in sparking plugs for internal combustion engines, and more particularly to sparking plugs in which a heating resistance element adapted for connection to a low tension battery is incorporated with the plug for the purpose of heating the sparking plug and driving off condensation products and facilitating ignition.
  • the present invention has for an object an improved construction of sparking plug of this type.
  • a sparking plug comprises in combination with a plug body a central electrode, said central electrode having a lower free end extending within said plug body, a conducting sleeve surrounding and insulated from said central electrode, a conducting bush surrounding and insulated from said conducting sleeve, a gland nut engageable with said bush to hold said bush in said plug body, a resistance coil disposed around and spaced from the lower free end of said central electrode, said resistance coil being adapted to be heated from a source of low tension current, the resistance coil being connected at one end to said conducting sleeve and at the other to said bush and means remote from the plug body providing connection between said conducting sleeve and the source of low tension current.
  • I denotes the tubular plug body, and 2 the central or main electrode.
  • the shank of the central electrode 2 is surrounded over the major portion of its length by an insulating sleeve 4 embraced by a metal conducting sleeve II to which is attached between the fixed nut I and the locking nut I5, a low tension conductor I2.
  • the high tension conductor 8 is clamped to the central electrode 2 by means of a fixed nut I II and a locking nut I8.
  • Suitable insulating members I! and II are mounted under 45 the fixed nuts I and It, respectively.
  • the conductors 9 and I 2 may be led to any convenient source of electric current such as a battery (not shown), the current being controlled from any convenient position such as the dash-board of a car.
  • the sleeve I I is surrounded by insulation I3 embraced by a flanged conducting bush J engaged 5 by the gland nut 6, threaded into the plug body I.
  • a resistance coil element 8a surrounding the inner end portion of the central electrode 2 within the pocket I so that, when the sparking 1o plug is in use, combustible gases may enter the pocket 1 and be ignited by the coil 8a in the event of failure of the sparking plug to ignite such gases.
  • I4 denotes the earthed electrodes of the plug.
  • the resistor coil 8a is earthed by connec- 1 tion to the bush 5.
  • the resistor coil to in the position shown serves not only to maintain the plug points free from moisture and to heat up the plug in order to facilitate starting, but serves also as a preheater for the combustible gases entering the pocket I.
  • the resistor coil 8a while being exposed to the combustion gases, is shielded by the plug body I from fuel spray when used in engines operating under so-called solid-injection fuel systems.
  • a sparking plug comprising in combination with a plug body, a central electrode, said central electrode having a lower i'ree end extending within said plug body, a conducting sleeve surrounding and insulated from said central electrode, a conducting bush surrounding and insulated from said conducting sleeve, a gland nut engageable with said bush to hold saidbush in said plug body, a resistance coil disposed around and spaced from the lower free end of said central electrode, said resistance coil being adapted to be heated from a source of low tension current, the resistance coil being connected at one end to said conducting sleeve and at the other to said bush and means remote from .the plug body providing connection between said connecting sleeve and the source of low tension current.

Description

Patented Sept. 13, 1938 UNITED STATES PATENT OFFICE Application March 3, 1937, Serial No. 128,851 In Great Britain March 3, 1936 1 Claim.
This invention relates to improvements in sparking plugs for internal combustion engines, and more particularly to sparking plugs in which a heating resistance element adapted for connection to a low tension battery is incorporated with the plug for the purpose of heating the sparking plug and driving off condensation products and facilitating ignition. The present invention has for an object an improved construction of sparking plug of this type.
In accordance with the invention, a sparking plug comprises in combination with a plug body a central electrode, said central electrode having a lower free end extending within said plug body, a conducting sleeve surrounding and insulated from said central electrode, a conducting bush surrounding and insulated from said conducting sleeve, a gland nut engageable with said bush to hold said bush in said plug body, a resistance coil disposed around and spaced from the lower free end of said central electrode, said resistance coil being adapted to be heated from a source of low tension current, the resistance coil being connected at one end to said conducting sleeve and at the other to said bush and means remote from the plug body providing connection between said conducting sleeve and the source of low tension current.
The single figure oi the accompanying drawing shows in cross section a sparking plug constructed in accordance with the present invention.
Referring now to the drawing, I denotes the tubular plug body, and 2 the central or main electrode.
The shank of the central electrode 2 is surrounded over the major portion of its length by an insulating sleeve 4 embraced by a metal conducting sleeve II to which is attached between the fixed nut I and the locking nut I5, a low tension conductor I2. The high tension conductor 8 is clamped to the central electrode 2 by means of a fixed nut I II and a locking nut I8. Suitable insulating members I! and II are mounted under 45 the fixed nuts I and It, respectively. The conductors 9 and I 2 may be led to any convenient source of electric current such as a battery (not shown), the current being controlled from any convenient position such as the dash-board of a car. The sleeve I I is surrounded by insulation I3 embraced by a flanged conducting bush J engaged 5 by the gland nut 6, threaded into the plug body I. To the inner end of the sleeve II is attached one end of a resistance coil element 8a surrounding the inner end portion of the central electrode 2 within the pocket I so that, when the sparking 1o plug is in use, combustible gases may enter the pocket 1 and be ignited by the coil 8a in the event of failure of the sparking plug to ignite such gases. I4 denotes the earthed electrodes of the plug. The resistor coil 8a is earthed by connec- 1 tion to the bush 5.
As will be clear, the resistor coil to in the position shown serves not only to maintain the plug points free from moisture and to heat up the plug in order to facilitate starting, but serves also as a preheater for the combustible gases entering the pocket I.
The resistor coil 8a, while being exposed to the combustion gases, is shielded by the plug body I from fuel spray when used in engines operating under so-called solid-injection fuel systems.
I claim:
A sparking plug comprising in combination with a plug body, a central electrode, said central electrode having a lower i'ree end extending within said plug body, a conducting sleeve surrounding and insulated from said central electrode, a conducting bush surrounding and insulated from said conducting sleeve, a gland nut engageable with said bush to hold saidbush in said plug body, a resistance coil disposed around and spaced from the lower free end of said central electrode, said resistance coil being adapted to be heated from a source of low tension current, the resistance coil being connected at one end to said conducting sleeve and at the other to said bush and means remote from .the plug body providing connection between said connecting sleeve and the source of low tension current.
WILLIAM JOHN VINCENT. u
US128851A 1936-03-03 1937-03-03 Sparking plug Expired - Lifetime US2130208A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2130208X 1936-03-03

Publications (1)

Publication Number Publication Date
US2130208A true US2130208A (en) 1938-09-13

Family

ID=10899258

Family Applications (1)

Application Number Title Priority Date Filing Date
US128851A Expired - Lifetime US2130208A (en) 1936-03-03 1937-03-03 Sparking plug

Country Status (1)

Country Link
US (1) US2130208A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795220A (en) * 1953-03-24 1957-06-11 K & B Allyn Company Glow plug
DE3217951A1 (en) * 1982-05-13 1983-11-17 Robert Bosch Gmbh, 7000 Stuttgart SPARK PLUG FOR INTERNAL COMBUSTION ENGINES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795220A (en) * 1953-03-24 1957-06-11 K & B Allyn Company Glow plug
DE3217951A1 (en) * 1982-05-13 1983-11-17 Robert Bosch Gmbh, 7000 Stuttgart SPARK PLUG FOR INTERNAL COMBUSTION ENGINES
US4489596A (en) * 1982-05-13 1984-12-25 Robert Bosch Gmbh Spark plug with measuring means

Similar Documents

Publication Publication Date Title
US2492755A (en) Igniter
US2205145A (en) Glow plug
US2130208A (en) Sparking plug
US1609688A (en) Electrically-heated igniter
US2198850A (en) Glow plug for internal combustion engines
US2149868A (en) Glow plug
US2321782A (en) Spark plug wire terminal
US1237851A (en) Igniter.
US3087980A (en) Method and apparatus for preheating spark plugs
US1359514A (en) Ignition device
US1099365A (en) Combined spark-plug and vaporizer for internal-combustion engines.
US2024387A (en) Glow plug
GB2136504A (en) Flame glow-in plug for preheating the intake air of internal combustion engine
GB1329533A (en) Flame glow plugs serving as starting aids for diesel engines
US1453461A (en) Electrothermal ignition device
US3274487A (en) Igniter plug with spark-sensing means
US1331282A (en) Spark-plug
US1935171A (en) Internal combustion engine
US1927562A (en) Glow plug
US1819108A (en) Spark plug
US1962949A (en) Spark intensifier
US642167A (en) Electric-sparking plug for explosive-engines.
US1770384A (en) Electric heater and vaporizer
US2096200A (en) Glow plug
US2071570A (en) Shielded mica spark plug