| All Patents of Type: metal threading machines |
Patents 1 -
10
of 112
      |
| Picture | Number | Date | Patentee | Title |
| | 42,766 | May 17, 1864 | H.A. Harvey | Improvement in Machines for Threading Wood-Screws |
| | 81,049 | Aug. 11, 1868 | S.L. Wiegand | Screw Threading Machine |
| | 88,885 | Apr. 13, 1869 | J.L. Mason | Screw Forming Machine |
 | 111,248 | Jan. 24, 1871 | S.W. Putnam, Jr. | Improvement in machines for cutting screw-threads on bolts |
| | 113,740 | Apr. 18, 1871 | J.M. Carpenter | Improved Machine for Cutting Screws |
| | 122,702 | Jan. 16, 1872 | O.C. Burton | Improvement in Machines for Cutting Threads on Bolts |
| | 133,527 | Dec. 03, 1872 | A.E. Goddard, A. Goddard | Machines for Threading Screw Taps |
| | 133,574 | Dec. 03, 1872 | G. Emig | Machines for Cutting Screw Threads on Bolts and Nuts |
 | D6,764 | Jul. 08, 1873 | S.W. Putnam, Jr. | Design for frame of bolt-threading machines |
 | 141,460 | Aug. 05, 1873 | H.O. Reed | Improvement in screw-cutting machines |
