Patent Model - Improvement in Sad-Iron Heaters

Maker and role
S.M. Johnson (b.1835, d.1895), Patentee
Production date
Aug 25 1868
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Object detail

Steel, brass, wood
7 1/2 x 10 x 4" (19.1 x 25.4 x 10.2cm)
Johnson's patent consists: "First, of an improved construction and arrangement of the burner and vapor-generating chamber. Second, in the arrangement of the valve, for regulating the flow of the hydrocarbon-liquid near the burner and operating it from the outside, by means of a rod extending through the axis of the iron. Third, constructing the inner surface of the smooth-faces of the iron with radial corrugations to facilitate a more uniform heating of the smoothing-surfaces." (Patent Number 81,377)
Object number
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