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Patents for Alexander F. Roberts
Patents 16 - 30 of 62
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NumberDatePatenteeTitleType
72,273Dec. 17, 1867D. DickImprovement in wood-turning lathesspool or bobbin machines
72,877Dec. 31, 1867W.H. MayImproved method of preparing wood for musical instrumentsmusic instrument maker
73,823Jan. 28, 1868J. Mays, E.W. BlissImproved die-pressstamping presses
74,402Feb. 11, 1868C.B. MorseImprovement in bobbins for spinning
75,413Mar. 10, 1868I. HallImprovement in machines for carving in woodcarving machines
76,798Apr. 14, 1868C.B. MorseImprovement in spinning-frame
77,439May 05, 1868S. AndersonImprovement in sawssaw teeth
77,596May 05, 1868D. DickSpool lathespool or bobbin machines
78,157May 19, 1868I.C. TateImprovement in braces for bitsbrace chucks
78,726Jun. 09, 1868P.W. DolanTailor's Rule
78,940Jun. 16, 1868W.M. DotyImproved washing-machinewashing machines
80,241Jul. 21, 1868L. TiltonImprovement in wood-splitting machineswood splitting machines
81,182Aug. 18, 1868W.J. LintonTool Holdertap wrenches and die stocks
81,376Aug. 25, 1868L.A. JohnsonImprovement in guide for scrollsawsscrollsaws
81,450Aug. 25, 1868A. WirschingImprovement in watchmaker drillswatchmaker
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