High Quality Content by WIKIPEDIA articles! Eli Terry Sr. (April 13, 1772 – February 24, 1852) was an inventor and clockmaker in Connecticut. He received a United States patent for a shelf clock mechanism. He introduced mass production to the art of clockmaking, which made clocks affordable for the average American citizen. Terry occupies an important place in the beginnings of the development of interchangeable parts manufacturing. Terry became one of the most accomplished mechanics in New England during the early part of the nineteenth century. The village of Terryville, Connecticut is named for his son, Eli Terry Jr.