Self-propelled vehicles; a practical treatise on the theory, construction, operation, care and management of all forms of automobiles (1906)
Homans, James E. (James Edward), b. 1865 · New York, T. Audel & Company · leaf 303
anytimes the normal secondary voltage, the oscillating current,moving swiftly, is able to arc across between the metal points,avoiding the high-resistance path through the short-circuitingdeposit of carbon and oil residuum, in precisely the same fashionthat lightning leaps to a conductor.… … Fig. 209.—One form of Outside Spark Gap. of lubricating oil, deliberately poured into the combustion cham-ber, quickly produced fouling between the points. Operative Advantages of the Spark=Gap.—Other advan-tages of the spark-gap are that it furnishes a sure indication ofthe conditions of…
Automobiles
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