| Patents Granted on 1840-07-__ |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 1,669 | Jul. 01, 1840 | J. Ring | Machine for Removing Earth, etc. | excavators |
| 1,690 | Jul. 15, 1840 | J. MacGregor, Jr. | Wood plane attachment | cutterhead machine accessories |
| 1,691 | Jul. 15, 1840 | B. Cushwa | Self-adjusting log-brace for sawmills | sawmill carriages |
| 1,692 | Jul. 18, 1840 | S. Fairman | Expanding and Contracting or Universal Chuck for Lathes | metal lathe chucks |
| 1,695 | Jul. 18, 1840 | E. Fitzgerald | Machine for cutting match-splints | match making machines |
| 1,705 | Jul. 30, 1840 | J. Clark, Jr. | Machinery for turning | wood lathes |
