| All Patents in class 408/140 |
Patents 1 -
15
of 33
      |
| Number | Date | Patentee | Title | Type |
| 38,486 | May 12, 1863 | S. Ingersoll | Improved Friction Clutch | hand drills |
| 299,334 | May 27, 1884 | J.G. Blount | Chuck | wood lathe chucks |
| 318,654 | May 26, 1885 | J.L. Rathbun | Tapping Device | tap and die holders |
| 393,511 | Nov. 27, 1888 | S.D. Leland | Tap Driving Head | tap and die holders |
| 542,695 | Jul. 16, 1895 | F.W. Hoefer, D.C. Stover | Variable-speed sensitive drill press | drill presses |
| 555,442 | Feb. 25, 1896 | W.L. Fifield | Chain Drill | drill chucks |
| 566,923 | Sep. 01, 1896 | W.J. Mewer | Chain Drill | brace chucks |
| 610,208 | Sep. 06, 1898 | H.A. Tuttle | Tapping-machine | tapping machines |
| 717,199 | Dec. 30, 1902 | G.H. Hollm | Tapping Fixture | tap and die holders |
| 876,723 | Jan. 14, 1908 | W.A. Leonard | Tap Holder | tap and die holders |
| 900,122 | Oct. 06, 1908 | W.L. Procunier | Yielding Bit and Tap Chuck | drill press chucks |
| 991,630 | May 09, 1911 | F.P. Miller | Yielding Tapping Attachment | tapping heads and chucks |
| 1,002,310 | Sep. 05, 1911 | W.L. Procunier | Safety-chuck | drill press chucks |
| 1,037,796 | Sep. 03, 1912 | W.L. Procunier | Bit and tap and die chuck | tap and die holders |
| 1,496,577 | Jun. 03, 1924 | D.C. Klausmeyer | Discriminating Slip Device | metalworking machine mechanisms |
