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All Patents in class 72/441
Patents 1 - 15 of 49
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NumberDatePatenteeTitleType
24,428Jun. 14, 1859B. HotchkissTrip Hammertrip and helve hammers
30,343Oct. 09, 1860E. PayePower Hammertrip and helve hammers
39,924Sep. 15, 1863B. HotchkissImproved Atmosheric Trip-Hammersteam hammers
62,407Feb. 26, 1867A.J. GraingerImproved Forging Apparatuspower hammers
88,980Apr. 13, 1869T.T. ProsserImproved power-hammerdrop hammers
136,253Feb. 25, 1873J.M. LongPower Hammersdrop hammers
144,969Nov. 25, 1873W. EvansMachines for Forging Hammerstool making machines
170,868Dec. 07, 1875C. LustedDrop-Hammerdrop hammers
206,665Aug. 06, 1878C.W. CorrPower Hammerdrop hammers
244,370Jul. 19, 1881A. BeaudryPower-hammerdrop hammers
281,001Jul. 10, 1883A. BeaudryPower-hammerdrop hammers
335,394Feb. 02, 1886H. St. LawrencePower Hammerpower hammers
379,818Mar. 20, 1888C.J. RundquistFoot-power hammerfoot operated hammers
385,018Jun. 26, 1888H. Stewart, W.B. WiswallSpring-hammer for blacksmithsfoot operated hammers
477,559Jun. 21, 1892W.H. LawPower Hammerpower hammers
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