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Gray announced their line of horizontal hopper-cooled engines in 1911. This followed a 1910 takeover by the United States Motor Company, an automotive conglomerate that failed within a few months. When Gray resumed operations under their own leadership in 1911 the farm engine line appeared. This 1 3/4 horsepower “Marvel” of 1914 followed an earlier 1 1/2 horsepower style. A full history of United States Motor Co. appears in Crestline’s 70 Years of Chrysler by George Dammann.
By 1906 Gray Motor Company of Detroit had become established as a marine engine builder. Their 1908 line consisted of 1, 2, 3, and 4-cylinder models ranging from 2 1/2 to 40 horsepower. A 1908 advertisement claimed that Gray had the largest plant in the world devoted exclusively to making two-cycle marine engines. The 2 1/2 horsepower engine shown here carried a 1908 price of $67.50 while the 6 and 10-horsepower engines carried respective prices of $97.50 and $158. These prices included such marine fittings as shaft, propeller, stuffing box, muffler, batteries, spark coil, and all wires and switches.
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