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All Patents in class 451/294
Patents 1 - 15 of 74
First set of recordsNext set of recordsLast set of records
103,242May 17, 1870J. ShaughnessyImprovement in Tool Grinding Attachment for Lathesmetal lathe accessories
103,474May 24, 1870V. KnechtImproved pulley-sheaveindustrial machine pulleys and belt drive mechanisms
154,434Aug. 25, 1874W.F. WolfImprovement in molding-machinesmolders
306,560Oct. 14, 1884F.V. De WaterBelt-tightenerindustrial machine pulleys and belt drive mechanisms
325,373Sep. 01, 1885E.J. WorcesterDrill-grinding attachment for drilling-machineswoodworking post drills
348,143Aug. 24, 1886L. SchevellSaw-sharpenersaw sharpening machines
492,451Feb. 28, 1893F.D. WinkleyGrinding apparatus
516,146Mar. 06, 1894C.A. WordenMachine for sharpening razors, shears, &c.
583,402May 25, 1897M.O. ReevesSpeed-varying mechanismindustrial machine pulleys and belt drive mechanisms
651,839Jun. 19, 1900A.D. ErbSanding machinesanding machines
677,276Jun. 25, 1901W. RobertsonGrinding-machinegrinding machines
712,537Nov. 04, 1902C.S. HiseyElectric grinding devicehandheld power tools
891,950Jun. 30, 1908J.L. PerrySandpapering-machinesanding machines
946,635Jan. 18, 1910F. FrankeMachine for grinding straight machine-knivescutter grinding
973,135Oct. 18, 1910A.B. NuttingBuffing and polishing machinebench or pedestal grinders
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