Patent Model - Hot-Air Furnace
Maker and role
Michael Greenebaum, Patentee
Jan 23 1855
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4 1/4 x 5 x 4" (10.8 x 12.7 x 10.2cm)
Greenebaum's patent "consists in the construction of a drum to be attached to an ordinary furnace for the purpose of effectual, and equal, radiation of the heat, also in regulating the intensity of the heat by a simple throttle valve." (Patent Number 12,277)
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