Polzunov died three days before the machine was finished but it was put to work powering an air pump for a steel mill. Polzunov’s two-cylinder steam engine was more powerful than the English atmospheric engines. Ivan Polzunov was a Russian inventor who in 1766 built the first steam engine in his country and the first two-cylinder engine in the world. Ivan Polzunov and the First Two-Cylinder Steam Engine
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