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All Patents in class 251
Patents 1 - 15 of 171
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NumberDatePatenteeTitleType
FX-6,157Oct. 01, 1830A.B. QuimbyPreventing explosion of steamboat boilerssteam safety valves
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
39,259Jul. 14, 1863B. HollyPumppumps
39,852Sep. 08, 1863W. WattsSteam Pumpsteam pumps
54,153Apr. 24, 1866J.L. HewesImprovement in cut-off valves
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