| All Patents in class 408/140 |
Patents 1 -
10
of 34
      |
| Picture | Number | Date | Patentee | Title |
 | 38,486 | May 12, 1863 | S. Ingersoll | Improved Friction Clutch |
| | 299,334 | May 27, 1884 | J.G. Blount | Chuck |
| | 318,654 | May 26, 1885 | J.L. Rathbun | Tapping Device |
| | 393,511 | Nov. 27, 1888 | S.D. Leland | Tap Driving Head |
 | 542,695 | Jul. 16, 1895 | F.W. Hoefer, D.C. Stover | Variable-speed sensitive drill press |
 | 555,442 | Feb. 25, 1896 | W.L. Fifield | Chain Drill |
 | 566,923 | Sep. 01, 1896 | W.J. Mewer | Chain Drill |
 | 610,208 | Sep. 06, 1898 | H.A. Tuttle | Tapping-machine |
 | 717,199 | Dec. 30, 1902 | G.H. Hollm | Tapping Fixture |
| | 876,723 | Jan. 14, 1908 | W.A. Leonard | Tap Holder |
