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McCoy went to Edinburgh, Scotland, at age 15 and studied mechanical engineering for five years. When he came home he became a railroad fireman on the Michigan State Railroad. Back then steam locomotives had to stop at intervals so that the fireman could oil their pistons, levers, and connecting pins. About 1870, while living in the town of Ypsilanti, Michigan, McCoy began to experiment with automatic lubricators for steam engines. He received his first patent in 1872 for a "lubricator cup" that provided a steady but unregulated flow of oil to a lubricating point. Later that year he patented a lubricator equipped with stopcocks linked to a rod that enabled the oil flow to be controlled...
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