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Patents for John H. Shumway
Patents 1 - 15 of 27
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NumberDatePatenteeTitleType
51,967Jan. 09, 1866W. Schollhorn, F.P. PflegharImprovement in Compasses and Caliperscalipers
52,335Jan. 30, 1866N.C. StilesClutchmetal punches
55,704Jun. 19, 1866A. PondImproved Tack-Hammertack hammers
57,934Sep. 11, 1866E. LymanScrew Gagespecial purpose gauges
61,503Jan. 29, 1867H.D. BarnesImprovement in shingle machinesshingle machines
61,900Feb. 05, 1867A. WarnerImprovement in hubs for carriage-wheelswheelwright
67,644Aug. 13, 1867G. Gilbert, A.N. AllenImprovement in ironing machines
71,440Nov. 26, 1867H.D. BarnesImprovement in floor-clampsfloor clamps
71,442Nov. 26, 1867A.B. BeanImprovement in knife-sharpenersharpening apparatus
71,983Dec. 10, 1867G.H. Coe, G.H. SnowImprovement in clampshand screws
75,198Mar. 03, 1868J. RootImproved bolt-heading machinenut or bolt making machines
77,347Apr. 28, 1868A.B. BeanImprovement in nut machinesnut or bolt making machines
79,193Jun. 23, 1868C. BishopShears
86,605Feb. 02, 1869I.P. TiceImprovement in molding-machineswood shapers
88,214Mar. 23, 1869J. RootImproved bolt-heading machinenut or bolt making machines
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