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of New York and Elizabethport, NJ, USA
Engineers, founders and machinists.
Established in 1854 by brothers Adolphus Brown and Felix Brown. Their works were known as the Progress Machine Works.
c.1865 they made a steam engine.
1874 Began making hot air engines (also known as caloric engines).
1877,Felix Brown patented a much-improved caloric engine that increased the practical output limit from 6 HP to 14 HP. They enjoyed some success until rendered obsolete by internal combustion engines.
Adolphus died in 1875 and Felix assumed control of the business. At some point various sons joined the business, and in about 1890 Auguste Brown (son of A dolphus) and Felix Brown, Jr. joined the partnership, which became A. & F. Brown Co.. Sometime before that, but by 1887, the name Brown Caloric Engine Co. started to be used along with the A. & F. Brown Co. name.
A. & F. Brown also produced a range of sirens operated by steam and air.
The above information is condensed from the Vintage Machinery entry for A. & F. Brown & Co.
They supplied three hot air engines for the Lizard Lighthouse.
Scan of three page leaflet for the Brown Caloric Engine here