Nicholas Roosevelt (inventor) 74-gun ships. In 1797, with Robert R. Livingston and John Stevens, he agreed to build a boat on joint account, for which the engines were to be constructed by Roosevelt, and the propelling agency was to be that planned by Livingston. The experiment failed, the speed attained being only equivalent to about in still water. On September 6, 1798, Roosevelt described and earnestly recommended to Livingston a vertical wheel, which is the first practical suggestion of the combination that made steam navigation a commercial success, although four years later Robert Fulton believed that chains and floats were alone to be
Jensen Steam Engines in Oak Ridge in 1948 with a Jensen Steam Engine and generator. The makeshift boiling water reactor that these engineers built also became the test bed for the light water reactors used today. The current range of models are divided into the Hobby/Educational series and the Collector/Commercial series; the latter being more substantial and "up-market". Some models are electrically heated and some are solid fuel fired; some on pressed steel bases and some on wooden bases. 4.^ http://www.indianarog.com/jensenchronologyvarieties.htm Jensen Steam Engines Jensen Steam Engines is a manufacturer of model/toy steam engines, located in Jeannette, PA USA. Established in 1932 by