Collecting antique spark plugs helps us understand how the internal combustion engine itself has evolved over the years.
W. B. Handee Quick Detachable, this plug was made so just by turning the rabbit ear handles, the insulator could be removed for cleaning, without having to remove the plug body from the engine.
Photo by Jeff Bartheld
Red Head Priming Plug, made by Emil Grossman Co. of New York. This style was very popular, as you could put a drop or two of gas in the priming cup, and prime the engine without taking the whole plug out.
Eyquem Nationale, a French plug, with one of the most beautiful insulators of any plug made.
Saint Cloud plug was made in St. Cloud, Minnesota. Very little is known about this plug as it is the only known extant plug of this make.
Multi Point, made by the Vola Mfg. Co. had a spinning fan ont he bottom to blow carbon off the electrodes.
An Elk. This is what is called a Visible plug; the spark could be watched in the little window to make sure it was firing correctly.