In 1832 he partnered with Morris Ketchum and Jasper Grosvenor to form Rogers, Ketchum and Grosvenor, building agricultural and textile machinery as well as springs, axles and other small parts for the first railroads of America.
[4][5] More importantly, it was the first to use cast iron driving wheels (wooden spokes were common before) and the first to feature counterweights in them to offset the force of the piston stroke and the combined weight of the axle, wheels and piston rod against the railroad track.
Rogers filed a patent for the engine's counterbalance on July 12, 1837.
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