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Patents for John Sellers Bancroft
Patents 1 - 15 of 15
First set of recordsLast set of records
NumberDatePatenteeTitleType
224,762Feb. 24, 1880J.S. BancroftInjector for Feeding Boilersfeedwater apparatus
243,634Jun. 28, 1881J.S. Bancroft, W. SellersFeed Gearing for Machine Toolsindustrial machine gearing
248,263Oct. 11, 1881J.S. Bancroft, W. SellersTurning Lathemetalworking machine mechanisms
270,366Jan. 09, 1883W.H. Thorne, J.S. BancroftDrilldrill sharpening machines
323,019Jul. 28, 1885J.S. BancroftMachinery for Transmitting Motion
331,178Nov. 24, 1885J.S. BancroftInjectorfeedwater apparatus
374,908Dec. 13, 1887J.S. Bancroft, W. SellersPlaning Machine for Metalsmetal planers
417,659Dec. 17, 1889J.S. BancroftMeans for Operating the Die Heads of Bolt Threading Machinesmetal threading machines
460,497Sep. 29, 1891J.S. BancroftTool Grinding Machinetool grinders
508,268Nov. 07, 1893J.S. BancroftMachine for Sharpening Drillsdrill grinders
520,748May 29, 1894J.S. BancroftMethod of Operating Electric Motorsmotor controls
552,873Jan. 07, 1896C.G. Barth, J.S. Bancroft, W. SellersTesting Machinetesting machines
646,397Mar. 27, 1900W.H. Thorne, J.S. BancroftGrinding-Machinetool grinders
734,799Jul. 28, 1903J.S. BancroftTool Grinding Machinetool grinders
944,404Dec. 28, 1909J.S. BancroftComparatormeasurement gauges
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