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33.771339, -84.400171
665 Marietta Street
This 350-horsepower Corliss type steam engine is an example of a typical late nineteenth century steam engine. The essential feature of Corliss type engines is the valves that admit steam to and exhaust it from the cylinder. The Corliss valve gear made the engine extremely efficient in steam consumption and was the most efficient system for controlling low to medium speed engines. This particular engine operated for more than eighty years, having been retired not by age but over concern for stack emissions by the U.S. Environmental Protection Agency. The engine was built by the William A. Harris steam engine company of Providence, Rhode Island (at one time the world center for steam engine manufacturing), and was first used at Atlanta's Cotton States and International Exposition of 1895, Piedmont Park, Atlanta. The engine was delivered on May 16, 1898, to the Exposition Cotton Mills in Atlanta and was sold to Randall Brothers between 1898 and 1910 for use in their woodworking plant. In service more than seventy five years, it was used to drive an electric generator and power machinery through overhead line shafting. The steam boilers were capable of burning wood, coal, or gas until converted to fuel oil in the 1970s.
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Public Domain (National Park Service)
Image Caption
Harris-Corliss Steam Engine

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