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
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William Frederick Grafton
William Douglas Cairney
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Individual
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Individual
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Publication of GB191500863ApublicationCriticalpatent/GB191500863A/en
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
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Ignition Installations For Internal Combustion Engines
(AREA)
Abstract
863. Grafton, W. F., and Cairney, W. D. Jan. 19. Sparking - plugs. -The casing A is made by turning down a piece of steel tube. There are two insulators, the inner one E being retained by the screwed ring D and secured by the terminal, which also passes through the outer one F, and by a spring washer G. The conductor is secured by another spring washer I. The Provisional Specification states that the insulators may be made of translucent glass.
GB191500863D1915-01-191915-01-19Improvements in and connected with Sparking Plugs for Internal Combustion Engines and the like.
ExpiredGB191500863A
(en)