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Cartwright's engine. Historical artwork of Cartwright's alcohol engine that was patented in 1797. Edmund Cartwright (1743-1823) was an English inventor and clergyman. He patented a power loom for weaving cloth in 1785 and a wool combing machine in 1789. This engine used alcohol vapour instead of steam to drive the piston (centre), which turned the wheel. Published in ^IHistory and progress of the steam engine,^i England, 1830. (KEYSTONE/SCIENCE PHOTO LIBRARY/SCIENCE, INDUSTRY & BUSINESS LIBRARY/NEW YORK PUBLIC LIBRARY/SCIENCE PHOTO LIBRARY)