| Patents Granted on 1840-08-?? |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 1,717 | Aug. 12, 1840 | E. Carver | Machine for Cutting the Teeth of Circular Saws | annular saws |
| 1,718 | Aug. 12, 1840 | E. Carver | Machine for filing or smoothing the teeth of saws | saw sharpening machines |
| 1,719 | Aug. 12, 1840 | T. Denderdine, Jr. | Machine for sawing stuff circular | reciprocating saws |
| 1,720 | Aug. 12, 1840 | J. Keane, T. Keane, S. Kane | Screw-Wrench | screw adjust wrenches |
| 1,721 | Aug. 12, 1840 | J.P. McDowell | Machine for sawing and splitting timber | circular saws |
| 1,723 | Aug. 14, 1840 | W.L. Harley | Machine for boring and mortising in chair seats, legs, and arms | drilling and boring |
| XC-165 | Aug. 21, 1840 | J. Ainslie | Ainslie's clay slate and Ainslie's clay slate machine | |
| 1,739 | Aug. 25, 1840 | T.J. Wells | Machine for grinding apples and other fruit | food grinders |
| RX-23 | Aug. 26, 1840 | J. Stimpson | Improvement in the mode of Forming and Using Cast or Wought Iron Plates or Rails for Railroad-Carriage Wheels to run upon | track and switches |
| 1,751 | Aug. 28, 1840 | M. Rich | Sawmill-dog for setting logs | sawmill carriages |
