What did Elijah McCoy invent, and what year did he invent it in?
His first invention was a lubricator for steam engines, U.S. 129,843, which issued on July 12, 1872. The invention allowed machines to remain in motion to be oiled; his new oiling device revolutionized the industrial machine industry. The term “real McCoy” refers to the oiling device used for industrial machinery. His contribution to the lubricating device became so popular that people inspecting new equipment would ask is the device contained the real McCoy. This helped popularize the American expression, meaning the real thing. His other inventions included an ironing board and lawn sprinkler. By 1923 McCoy was known throughout the world. His inventions were patented in great Britain, France, Germany, Austria, and Russia as well as in Canada and the United States. Elijah McCoy was born in Colchester, Ontario, Canada on May 2, 1844, the son of former slaves who had fled from Kentucky before the U.S. Civil War. Educated in Scotland as a mechanical engineer, Elijah McCoy returned to the
