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US1769440A - Spark-plug-shorting device - Google Patents

Spark-plug-shorting device Download PDF

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Publication number
US1769440A
US1769440A US294628A US29462828A US1769440A US 1769440 A US1769440 A US 1769440A US 294628 A US294628 A US 294628A US 29462828 A US29462828 A US 29462828A US 1769440 A US1769440 A US 1769440A
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US
United States
Prior art keywords
plug
spark
body portion
spark plug
shorting device
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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
US294628A
Inventor
Lieseke Albert
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Individual
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Individual
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Priority to US294628A priority Critical patent/US1769440A/en
Application granted granted Critical
Publication of US1769440A publication Critical patent/US1769440A/en
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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
    • H01T13/06—Covers forming a part of the plug and protecting it against adverse environment

Definitions

  • This invention relates to a device especially designed for use in connection with internal combustion engines, the primary object of the invention being to provide means whereby a mechanic or person working on an internal combustion engine may deter mine the condition of the spark plugs of the engine to ascertain which spark plug of the engine is inoperative.
  • Another object of the invention is to provide a device of this character which may be readily and easily positioned, the construction of the devicefbeing such that it will be held by its frictional contact with the plug, eliminating the necessity of securing the device by clamps, or other securing means. i.
  • a still further object of the invention is to provide a device of this character which will automatically adjust itself for use in connection with spark plugs of various sizes.
  • Figure 1 is a sectional view through a device constructed in accordance with the invention.
  • Figure 2 is a front elevational View thereof.
  • Figure 3 is a sectional view taken on line 33 of Figure 2.
  • the de vice comprises 'a substantially cone-shaped body portion 5 and a handle section 6, the handle section being constructed of suitable insulating material so that a person positioning the device will not receive a charge through the device.
  • the handle section 6 has a tapered extremity 7 fitted in the upper end of the body portion 5 and secured in position by means of the rivet 8.
  • the body portion is formed of 1928. Serial No. 294,628.
  • the length of the body portion is such that the body portion will contact with the spark plug shell, which is indicated at A, while the nut indicated at B and which secures the cord terminal to the plug, will be engaged by the upper portion of the body 5.
  • the space between the edges of the body portion provides a clearance for the wire leading from the coil of the ignition system to the spark plug.
  • the lower edges of the body portion are cut away defining curved edges 10 which act to guide the device over the spark plug, should it be desired to position the device in the dark.
  • the number of the devices used in testing the spark plugs of an internal combustion engine is one less than the number of spark plugs of the engine to the end that all of the spark plugs but one will be supplied with a shorting device-of this type, leaving the engine to run on a single cyl- 1n er.
  • the devices are now moved along the I spark plugs, covering the spark plug which has been firing, while the adjacent plug is left free to fire. This operation is continued until the dead spark plug has been located, which of course will be evident by the fact that the engine will not run when the live spark plugs are shorted, and the dead spark plug exposed.
  • a spark plug'short circuiting device comprising a substantially cone-shaped split body portion formed of conducting material, the edges of the split portion being disposed ALBERT

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  • Spark Plugs (AREA)

Description

July 1, 1930. Y A. LIESEKE [1,769,440
- SPARK PLUG SHOR'I'ING navrc n Filed July 2a, 1928 jimewzzzweka I 3mm anew 1 0.
Patented July 1, 1930 UNITED STATES ALBERT LIESEKE, OF HARRISONVILLE, MISSOURI SPARK-PLUG-SHORTING DEVICE Application filed July 23,
This invention relates to a device especially designed for use in connection with internal combustion engines, the primary object of the invention being to provide means whereby a mechanic or person working on an internal combustion engine may deter mine the condition of the spark plugs of the engine to ascertain which spark plug of the engine is inoperative.
Another object of the invention is to provide a device of this character which may be readily and easily positioned, the construction of the devicefbeing such that it will be held by its frictional contact with the plug, eliminating the necessity of securing the device by clamps, or other securing means. i.
A still further object of the invention is to provide a device of this character which will automatically adjust itself for use in connection with spark plugs of various sizes.
With the foregoing and other objects in view which willappear as the description proceeds, the invention resides in the com bination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.
Referring to the drawing: 7
Figure 1 is a sectional view through a device constructed in accordance with the invention.
Figure 2 is a front elevational View thereof.
Figure 3 is a sectional view taken on line 33 of Figure 2.
Referring to the drawing in detail, the de vice comprises 'a substantially cone-shaped body portion 5 and a handle section 6, the handle section being constructed of suitable insulating material so that a person positioning the device will not receive a charge through the device.
The handle section 6 has a tapered extremity 7 fitted in the upper end of the body portion 5 and secured in position by means of the rivet 8.
As shown, the body portion is formed of 1928. Serial No. 294,628.
sheet metal material, and constructed in such .a way that the edges of the body portion are spaced apart defining the space 9 which permits the body portion to expand or contract slightly to insure a fitting of the device over the spark plug with which it is used, regardless as to the size of the plug.
The length of the body portion is such that the body portion will contact with the spark plug shell, which is indicated at A, while the nut indicated at B and which secures the cord terminal to the plug, will be engaged by the upper portion of the body 5. Thus it will be seen that when a device of this character is positioned, the electric current passing to the plug will be shorted through the shell of the plug.
It might be further stated that the space between the edges of the body portion provides a clearance for the wire leading from the coil of the ignition system to the spark plug. I
The lower edges of the body portion are cut away defining curved edges 10 which act to guide the device over the spark plug, should it be desired to position the device in the dark.
In the use of the device, it is'to be understood that the number of the devices used in testing the spark plugs of an internal combustion engine is one less than the number of spark plugs of the engine to the end that all of the spark plugs but one will be supplied with a shorting device-of this type, leaving the engine to run on a single cyl- 1n er.
The devices are now moved along the I spark plugs, covering the spark plug which has been firing, while the adjacent plug is left free to fire. This operation is continued until the dead spark plug has been located, which of course will be evident by the fact that the engine will not run when the live spark plugs are shorted, and the dead spark plug exposed.
I claim:
A spark plug'short circuiting device, comprising a substantially cone-shaped split body portion formed of conducting material, the edges of the split portion being disposed ALBERT
US294628A 1928-07-23 1928-07-23 Spark-plug-shorting device Expired - Lifetime US1769440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US294628A US1769440A (en) 1928-07-23 1928-07-23 Spark-plug-shorting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US294628A US1769440A (en) 1928-07-23 1928-07-23 Spark-plug-shorting device

Publications (1)

Publication Number Publication Date
US1769440A true US1769440A (en) 1930-07-01

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Family Applications (1)

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US294628A Expired - Lifetime US1769440A (en) 1928-07-23 1928-07-23 Spark-plug-shorting device

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