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Patents for Van Norman Machine Tool Co.
Patents 16 - 30 of 74
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NumberDatePatenteeTitleType
1,445,875Feb. 20, 1923R.W. Ellingham, C.E. Van NormanGrinding machinevehicle mechanic
1,515,568Nov. 11, 1924R.W. Ellingham, G.W. FlemingGrinding machinecylindrical grinders
1,544,287Jun. 30, 1925C.E. Van NormanGrinding machinecylindrical grinders
1,646,801Oct. 25, 1927G.W. Fleming, F.D. Van NormanTriple grinding machinegrinders
1,716,331Jun. 04, 1929B.F. StowellMethod of making colletscollets and collet holders
1,722,691Jul. 30, 1929C.E. Van NormanGrinding machinegrinders
1,735,804Nov. 12, 1929B.F. StowellColletcollets and collet holders
1,749,514Mar. 04, 1930J.Y. ScottValve-reseating apparatusvalve and seat maintenance
1,761,059Jun. 03, 1930C.E. Van Norman, B.F. StowellPolishing machinehandheld power sanders
1,763,201Jun. 10, 1930F.D. Van NormanMagnetic throw-off for grinding machinesgrinders
1,788,475Jan. 13, 1931C.E. Van NormanFeed mechanism for grinding machinesgrinders
1,812,455Jun. 30, 1931B.F. StowellDiaphragm chuckgrinders
1,830,179Nov. 03, 1931B.F. StowellCutting Toolmilling machine cutters
1,858,693May 17, 1932C.E. Van NormanChuckchucks
1,868,440Jul. 19, 1932E.A. ArpBoring machine and methodautomotive tools
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