The E. Ingraham Company was one of the premier American clock and watch manufacturers during the 19th and 20th centuries.
[1] Elias Ingraham (1805–1885) opened his own shop in Bristol in 1831 as a cabinetmaker and designer of clock cases.
By this time, the E. Ingraham Company operated five factories and employed more than 500 people who manufactured 250,000 clocks annually.
[5] In 1913 the company began producing wrist watches, followed by eight day alarm clocks in 1915.
[2] During World War II, the company temporarily ceased manufacturing clocks and began producing mechanical time-fuse parts and anti-aircraft artillery for the U.S.