| All Patents in class 408/224 |
Patents 1 -
10
of 43
      |
| Picture | Number | Date | Patentee | Title |
| | 4,864 | Nov. 24, 1846 | T.J. Sloan | Making Wood Screws |
 | 7,004 | Jan. 08, 1850 | L.W. Miller | Hub-boring machine |
 | 8,267 | Jul. 29, 1851 | W.R. Jones | Machine for preparing hubs for boxes |
 | 11,587 | Aug. 22, 1854 | B.F. Graves | Tool for boring recesses for casters, &c. |
 | 47,812 | May 23, 1865 | W.W. Grier, R.H. Boyd | Improved drill-bit |
 | 89,097 | Apr. 20, 1869 | C. Wardwell | Improvement in Augers |
| | 93,824 | Aug. 17, 1869 | W. Humphreys | Improved Compound Tool for Water and Gas Pipes |
 | 116,837 | Jul. 11, 1871 | D. Kelly | Improvement in boring-bits |
 | 117,082 | Jul. 18, 1871 | J.J. Kraus | Improvement in wood-boring tools |
 | 131,279 | Sep. 10, 1872 | P. Kavanagh | Improvement in Augers |
