Empire Agricultural Works of Cobleskill, NY built an engine equipped with a steel boiler, double hinged smoke stack, large double feed door, spring seat, and brake. Empires were built in 6, 8, 10, 12, 15, and 20hp sizes. They also built aa Circular Saw.
Information Sources:
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Norbeck, Jack, Encyclopedia of American Steam Traction Engines, Crestline Publishing Inc, Glen Ellyn, Illinois, Pg. 34.