Patent Model - Injector

Maker and role
Thomas Hart, Patentee
Thomas Hart, Assignor
The Sherwood Manufacturing Company, Assignee
Production date
Oct 13 1891
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Object detail

Brass, wood
33 1/8 x 17 1/4 x 2 1/2" (84.1 x 43.8 x 6.4cm)
Hart's invention "has the object to provide a valve mechanism by which the water-valve and the steam-valve are operated simultaneously, whereby the supply of water to the injector is at all times proportionate to the steam-supply." (Patent Number 461,197)
Object number
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