The New England Wireless and Steam MuseumNEWSM Logo


1300 Frenchtown Road
East Greenwich, RI 02818 USA
Telephone: 401-885-0545
Robert W. Merriam, Director





Armington & Sims Engine Company
Small Armington & Sims

This High Speed engine was built by the Armington & Sims Engine Company, Eagle Street, Providence, RI. It was delivered to the Hartford Electric Light Company in 1883. It was connected to a Thomson-Houston Electric Company generator that would power 28 lights. It has a 9.5" bore and a 10" stroke and produces 50 Horsepower at 350 RPM with 175 PSI of steam. This square design is still the preferred ratio of bore to stroke. It has a balanced crankshaft and a Rites governor. This engine design was also used by Thomas Edison to drive his generators at Pearl Street. Henry Ford was chief engineer at Detroit Edison Electric light before he made automobiles. Both Edison and Ford thought highly of the Armington & Sims engines.

This engine and generator was donated to the NEWSM by the Connecticut Light and Power Company in 1999. When received, the engine was missing the piston, piston valve, piston rod, and valve rod. Replacement parts were made by the Thursday crew and the engine now runs. The generator was restored and connected to a power panel.

Robert Merriam Demonstrates the Thompson-Houston Generator

Large Armington & Sims

This High Speed engine was built by the Armington & Sims Engine Company, Eagle Street, Providence, RI. It was first delivered to the Narragansett Pier Electric Light Company. It was later used to power the Sea View Railroad that ran from East Greenwich to Narragansett. It has a 12" bore and a 12" stroke and produces 75 Horsepower at 350 RPM with 175 PSI of steam. This square design is still the preferred ratio of bore to stroke. It has a balanced crankshaft and a Rites governor. This engine design was also used by Thomas Edison to drive his generators at Pearl Street. Henry Ford was chief engineer at Detroit Edison Electric light before he made automobiles. Both Edison and Ford thought highly of the Armington & Sims engines. When the Sea View Railroad discontinued service in 1922 Henry Ford bought the engine and generator and moved it to his museum in Dearborn, MI. The Henry Ford museum had several of these engines and donated this engine to the NEWSM.

The Sea View Depot in 1909. This train was powered by the engine show above.

Small bronze Armingtom & Sims designed to drive an industrial sewing machine used in the garment district of New York.


For more information please e-mail: Robert W. Merriam, Director
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Web page comments and suggestions to: Michael Thompson.