All Patents of Type: taps and dies |
Patents 1 -
15
of 148
|
Number | Date | Patentee | Title | Type |
20,168 | May 04, 1858 | R. Nuttall | Cutting Screws | taps and dies |
28,747 | Jun. 19, 1860 | E.P. Gleason | Die plate for cutting screws | taps and dies |
40,203 | Oct. 06, 1863 | C.C. Walworth | Screw Cutting Tap | taps and dies |
40,386 | Oct. 20, 1863 | C.C. Walworth | Screw Cutting Tap | taps and dies |
47,543 | May 02, 1865 | B.S. Hill | Die for Cutting Male-Screw Threads | taps and dies |
54,096 | Apr. 24, 1866 | B.F. Bee | Improved screw-tap | taps and dies |
71,605 | Dec. 03, 1867 | W.T. Gillinder | Forming Threads on Sheet Metal Caps | taps and dies |
79,637 | Jul. 07, 1868 | J.E. Conor | Improvement in Presses | taps and dies |
82,118 | Sep. 15, 1868 | A. Hoermann | Die for Cutting Screws | taps and dies |
GB-186,901,263 | Apr. 24, 1869 | A. Muir | Improvements in stocks and dies for screwing bolts and other articles | taps and dies |
93,824 | Aug. 17, 1869 | W. Humphreys | Improved Compound Tool for Water and Gas Pipes | pipe reamers |
104,234 | Jun. 14, 1870 | J.E. Weaver | Improved Die for Cutting Screw Threads on Bolts | taps and dies |
114,935 | May 16, 1871 | G.H. Fox | Improvement in screw-taps | taps and dies |
115,291 | May 30, 1871 | L.R. Faught | Improvement in die-stocks for cutting screws | taps and dies |
129,376 | Jul. 16, 1872 | W. Tucker | Improvement in Screw Taps | taps and dies |