Patent Model - Improvement in Slide-Valves for Steam-Engines
Maker and role
Samuel Hartman, Patentee
Production date
Aug 26 1862
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Object detail
Media/Materials
Wood
Measurements
1 1/2 x 4 1/4" (3.8 x 10.8cm)
Description
Hartman's patent "consists in making the valve open through the center and in not less than two parts, with rubber or its equivalent packing between said parts for the purpose of causing both sides of the valve to work close to the top and bottom or opposite sides of the steam-chest." (Patent Number 36,299)
Collection
Object number
2015.14.403a,b
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