Hornblower's, Cartwright's and Woolf's steam engines. . Steam engines: Jonathan Hornblower's compound steam engine, Edmund Cartwright's alcohol engine and Arthur Woolf's high-pressure compound steam engine, 18th and 19th century. Copperplate engraving by Wilson Lowry after an Illustration by J. Farey from Abraham Rees' Cyclopedia or Universal Dictionary, London, 1818.