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All Patents of Type: drop hammers
Patents 1 - 15 of 112
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NumberDatePatenteeTitleType
GB-163,400,044Jul. 13, 1628A. RotsipenInstruments for cutting, polishing, filing, turning, boring, grinding, sawing, and planing metals for cutting screws, for making files and bullets, for making and rifling barrels, for pressing or printing, and a hammer moved by water or horse powerscrew machines
GB-178,401,432Apr. 28, 1784J. WattImprovements on steam or fire engines—three bar motion and steam carriagesteam engines
GB-180,602,939Jun. 06, 1806W. DeverellGiving motion to hammers, stampers, knives, shears, and other things, without the application of a wheel, pinion or any rotative motion, by powers in common usedrop hammers
GB-184,309,850Jul. 24, 1843J. NasmythImprovements in machinery or apparatus for forging, stamping, and cutting iron and other substances; Machinery for driving pilesdrop hammers
GB-185,113,777Oct. 16, 1851T.H. FromingsForge-hammersdrop hammers
GB-186,102,772Nov. 05, 1862R. WilsonImprovements in steam hammers and in valves applicable to the same, and to other steam enginesdrop hammers
78,867Jun. 16, 1868J. DuffDrop Hammerdrop hammers
78,933Jun. 16, 1868D. DavySteam Balanced Valvedrop hammers
88,980Apr. 13, 1869T.T. ProsserImproved power-hammerdrop hammers
108,326Oct. 18, 1870J. Hay, J.C. ButterfieldImprovement in trip-hammersdrop hammers
RE4,470Jul. 18, 1871J. Hay, J.C. ButterfieldImprovement in trip-hammersdrop hammers
136,253Feb. 25, 1873J.M. LongPower Hammersdrop hammers
144,058Oct. 28, 1873J.C. ButterfieldImprovement in power-hammersdrop hammers
144,059Oct. 28, 1873J.C. ButterfieldImprovement in power-hammersdrop hammers
153,534Jul. 28, 1874J.C. ButterfieldImprovement in trip-hammersdrop hammers
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