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All Patents in class 251
Patents 1 - 15 of 176
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FX-6,157Oct. 01, 1830A.B. QuimbyPreventing explosion of steamboat boilerssteam safety valves
8,303XJul. 10, 1834J. KirkpatrickSelf-balance steam valves
8,849XMay 29, 1835J. KirkpatrickBoiler valves and cam of the steam enginestationary boilers
9,380XFeb. 10, 1836C.W. PeckhamMolasses faucet
2,342Nov. 10, 1841L. LincolnConstruction of molasses gates and cocks for drawing liquors
RE105Jan. 25, 1848L. LincolnImprovement in the construction of molasses gates and cocks for drawing liquors
10,398Jan. 03, 1854W. WrightOperating Cut-Off Valves of Steam Enginessteam engine valves
12,873May 15, 1855J.A. ReedSteam-Engine Valvesteam pumps
16,351Jan. 06, 1857C. BradleySteam Balanced Valvesteam engine valve gear
17,433Jun. 02, 1857L.J. KnowlesFaucet
20,919Jul. 13, 1858B. HollyDamper
23,714Apr. 19, 1859C.A. SchultzSteam Balanced Valvesteam engine valves
27,381Mar. 06, 1860J.T. PlassSlide-valve for steam-enginessteam engine valves
28,192May 08, 1860R. Nickerson, A.B. ColtonValve-cock
33,095Aug. 20, 1861B.B. MooreHydrant
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