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
Ajax Engines Ajax Engines Ajax integral engine-compressors are gas compressors with built-in reciprocating engines. Their compact design and gas drive make them useful for field installation and work. The Ajax Iron Works started in 1877 in Corry, Pennsylvania, manufacturing steam engines. In 1895, the company added gas engines to its product line, and would continue to manufacture gas and steam until the latter was discontinued following World War II. Starting in 1946, Ajax gas engines became a primary product utilized by oil and gas companies. In 1958, the first Ajax integral engine / compressor was manufactured and was specifically designed for field