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 "proper" job to come along, he made a few samples of steam engines, hoping to sell them in a local department store. These were seen by a buyer from the F.A.O. Schwarz Toy Store in NY, who placed an order. The first batch of engines created much interest from other stores and catalogues and Jensen Steam Engines Inc. came into being in 1932. The factory temporarily closed at the start of World War II but soon reopened to make equipment for the army. In 1992, George Bush wrote to Jensen, thanking him for his "...unique contribution to America". On his