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All Patents of Type: ore processing apparatus
Patents 1 - 15 of 32
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NumberDatePatenteeTitleType
2,016XOct. 27, 1813H. AlexanderGrinding and reducing ores into powder and preparing them for various usesore processing apparatus
2,079XMar. 16, 1814T. GreggAir furnace for melting ores, refining and heating iron with stone coalore processing apparatus
2,140XMay 27, 1814D. WalworthMelting ores and metalsore processing apparatus
NX-2,640Jul. 05, 1816N. RockwellMill for grinding, washing, etc, gold and silver oresore processing apparatus
5,634XSep. 10, 1829W.H. FolgerMachine for washing alluvial earth, clay, and soft ores, and separating and saving the gold from the sameore processing apparatus
5,715XNov. 18, 1829W.H. FolgerMills for grinding, washing, and separating gold and silver from ores, earth, or in whatever state these metals may be found...ore processing apparatus
5,780XJan. 15, 1830J. Smith, S.C. WhistlerSeparating and grinding goldore processing apparatus
6,138XOct. 01, 1830R. KingSeparating gold by a vibrating circular cylindrical troughore processing apparatus
6,139XOct. 01, 1830R. KingVertical cylindrical gold washerore processing apparatus
6,224XNov. 01, 1830D. JonesSeparating gold from earthsore processing apparatus
6,516XApr. 23, 1831G.B. PalmerMachine for separating gold ore from earthore processing apparatus
6,871XDec. 21, 1831O. WillisGold, washing machine, called the railway car gold riddleore processing apparatus
7,078XMay 22, 1832T. GreggBlast furnace for smelting iron oreore processing apparatus
7,172XJul. 18, 1832J. GouldingMachine for separating iron oreore processing apparatus
7,222XSep. 05, 1832O. WillisGold, swinging, riddle, being an improvement on the railway car, for gold riddle, previously patented by himore processing apparatus
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