Patent Model - Improvement in Circulating Devices for Steam-Boilers
Maker and role
Henry Coleman (b.1827, d.1908), Patentee
Production date
May 15 1877
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Object detail
Media/Materials
Tin, steel
Measurements
5 1/2 x 2 7/8 x 136" (14 x 7.3 x 345.4cm)
10 1/16" (25.6cm)
10 1/16" (25.6cm)
Description
Coleman's invention "consists in the combination with, or employment in, a boiler of this construction of circulating-tubes, suspended within the tubes above referred to as connecting the two shells of the boiler, the said circulating-tubes being straight vertical tubes of about half the sectional area of the outer tubes, and extending upward a short distance into the upper shell, and downward to the bottom, upon which they are supported." (Patent Number 190,743)
Collection
Object number
2015.14.2382a-d
Maker
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