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All Patents in class 72/443
Patents 1 - 15 of 18
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NumberDatePatenteeTitleType
35,309May 20, 1862W.D. GrimshawPower Hammerpower hammers
45,850Jan. 10, 1865W.T. NicholsonImproved Machine for Forging File Blankstool making machines
208,719Oct. 08, 1878M. DeeringImprovement in power-hammerstrip and helve hammers
240,881May 03, 1881C.M. BrownPower-hammertrip and helve hammers
264,859Sep. 26, 1882J.C. ButterfieldAtmospheric hammerdrop hammers
301,937Jul. 15, 1884T. Tripp, Jr.Trip-hammertrip and helve hammers
341,045May 04, 1886T.V. NorrisPower Hammerpower hammers
487,692Dec. 06, 1892A. BeaudryPower-hammerdrop hammers
656,135Aug. 14, 1900H.H. HamlettHammer Pressforging presses
743,763Nov. 10, 1903W.E. SheehyPower Hammerpower hammers
1,007,792Nov. 07, 1911F. OrtonPressstamping presses
1,035,968Aug. 20, 1912J.L. KelleyTrip Hammertrip and helve hammers
1,046,809Dec. 10, 1912J. KunzMechanical Hammerpower hammers
1,620,534Mar. 08, 1927C.R. GabrielPresspunch presses
2,612,868Oct. 07, 1952R.P. FitzgeraldPneumatic drop hammerdrop hammers
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