Patent Model - Improved Valve-Gear for Steam-Engines

Maker and role
Julia Ross, Patentee
James Ross (d.Pre 1861), Patentee
Production date
Sep 24 1861
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Object detail

Brass, metal, wood
6 x 12 5/8 x 4 1/4" (15.2 x 32.1 x 10.8cm)
“This invention consists…” of a spring which “performs its duty in a more effective and certain manner than the said counterpoise levers and weights or the elastic lever, besides simplifying the construction of the valve-gear. (Patent Number 33,368)
Object number
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