| All Patents in class 470/103 |
Patents 1 -
15
of 35
      |
| Number | Date | Patentee | Title | Type |
| 48,476 | Jun. 27, 1865 | L. Yale, Jr. | Apparatus for Reversing the Motion of Screw-Taps | tap and die holders |
| 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 |
| 558,055 | Apr. 14, 1896 | F.A. Errington | Tapping Attachment | tapping heads and chucks |
| 578,483 | Mar. 09, 1897 | F.A. Errington | Automatic Friction Tapping Attachment | tapping heads and chucks |
| 627,529 | Jun. 27, 1899 | G.E. Randles | Screw Machine | screw machines |
| 631,080 | Aug. 15, 1899 | A.C. Kraft | Turret Lathe Tool Holder | lathe tool holders and tool posts |
| 687,407 | Nov. 26, 1901 | W. Runge | Drilling and tapping attachment for drill-presses | metalworking machines |
| 717,199 | Dec. 30, 1902 | G.H. Hollm | Tapping Fixture | tap and die holders |
| 748,018 | Dec. 29, 1903 | C.J. Rowe | Work and Tool Holder | tool holders |
| 770,966 | Sep. 27, 1904 | J. Hunter | Tool Holder | 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 |
| 1,037,796 | Sep. 03, 1912 | W.L. Procunier | Bit and tap and die chuck | tap and die holders |
