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 Jensen Steam Engines Jensen Steam Engines is a manufacturer of model/toy steam engines, located in Jeannette, PA USA. Established in 1932 by Tom Jensen Sr. They are still making steam engines using traditional technology and methods. Tom Jensen Sr (1901–1992) was born and educated in Denmark and was interested in steam engines from an early age. In 1923 he made a large model steam engine which is still in working order and is now unofficially known as the Jensen #1. As a young man, he moved to the United States looking for work as an engineer. While waiting for a