| Patents for Alexander F. Roberts |
Patents 1 -
15
of 69
      |
| Number | Date | Patentee | Title | Type |
| 54,096 | Apr. 24, 1866 | B.F. Bee | Improved screw-tap | taps and dies |
| 57,565 | Aug. 28, 1866 | P. Pryibil | Improvement in sawmills | bandsaws |
| 58,726 | Oct. 09, 1866 | J. Hoyt | Improvement in sawing machines | firewood machines |
| 59,125 | Oct. 23, 1866 | J.N. Dennisson | Improvement in water pumps | |
| 59,882 | Nov. 20, 1866 | T.J. Wells | Improved peat machine | |
| 60,151 | Dec. 04, 1866 | A.T. De Puy | Improvement in printers' galleys | printer |
| 60,621 | Dec. 18, 1866 | T.H. Cushing | Reciprocating saw for cutting arcs | reciprocating saws |
| 61,046 | Jan. 08, 1867 | A. Buell | Improvement in head-blocks for sawmills | sawmill headblocks |
| RE2,487 | Feb. 19, 1867 | C.W. Coe | Improvement in drilling and bolt-tapping machines | drill presses |
| 65,304 | May 28, 1867 | L. Tilton | Improvement in device for transmitting motion | woodworking machine mechanisms |
| 65,449 | Jun. 04, 1867 | I.C. Tate | Vise for Holding Wood | |
| 67,316 | Jul. 30, 1867 | W. Kester | Improvement in machines for making slate-frames | specialty woodworking machines |
| 67,346 | Jul. 30, 1867 | C.H. Porter | Improvement in Corking Bottles | combination cork extractors |
| 69,526 | Oct. 01, 1867 | G. Smith, J.N. Wrigley | Improvement in cut-off valve-gear | steam engine valve gear |
| 69,527 | Oct. 01, 1867 | G. Smith, J.N. Wrigley | Improvement in steam safety-valves | steam engine valves |
