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All Patents in class 251/282
Patents 1 - 15 of 18
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NumberDatePatenteeTitleType
5,540Apr. 25, 1848W.B. HillBalance Valve for Steam Enginestraction engine governors
16,351Jan. 06, 1857C. BradleySteam Balanced Valvesteam engine valve gear
23,714Apr. 19, 1859C.A. SchultzSteam Balanced Valvesteam engine valves
27,381Mar. 06, 1860J.T. PlassSlide-valve for steam-enginessteam engine valves
59,848Nov. 20, 1866J. LochheadImprovement in balance slide valvessteam engine valves
69,527Oct. 01, 1867G. Smith, J.N. WrigleyImprovement in steam safety-valvessteam engine valves
86,346Feb. 02, 1869J. AshcroftSafety Valvesteam safety valves
172,603Jan. 25, 1876B. BrazelleImprovement in balanced slide-valvessteam engine valves
181,334Aug. 22, 1876L.H. HallImprovement in balanced valvessteam engine valves
313,496Mar. 10, 1885D.C. HarlowValve for Steam Enginessteam engine valves
314,258Mar. 24, 1885J.G. MinerBalanced Slide Valvesteam engine valves
439,349Oct. 28, 1890N.T. GreeneSlide-valve for steam-enginessteam engine valves
1,014,591Jan. 09, 1912W.F. GouldBalanced Valvesteam engine valves
1,014,592Jan. 09, 1912W.F. GouldBalanced Valvesteam engine valves
1,112,233Sep. 29, 1914R.C. StevensPoppet Valvesteam engine valves
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