Patent Model - Grate for Furnaces

Maker and role
William Wilson, Patentee
James Smith, Patentee
Production date
Aug 27 1867
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Object detail

Wood, brass
9 x 10 x 7 1/2" (22.9 x 25.4 x 19.1cm)
Wilson and Smith's patent "consists in a certain novel mode of constructing, arranging, and moving the bars and other parts which constitute furnace fire-grates, by which the following desiderata are secured: first, the fuel during combustion, and as it is burnt down,' is carried towards the flue leading to the chimney; second, the spaces for the admission of air between the bars are maintained in a free and open condition all over the fire-grate; third, the formation of 'clinker' on the bars is prevented." (Patent Number 68,139)
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