| All Patents in class 470/60 |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
| | 149 | Mar. 25, 1837 | T.W. Harvey | Machine for Cutting and Heading Wire for the Manufacture of Wood-Screws |
| | 3,893 | Jan. 23, 1845 | S. Brooks | Making Wood Screws |
| | 151,522 | Jun. 02, 1874 | C.F. Twichell | Machines for Nicking Metal Screws |
| | 183,211 | Oct. 10, 1876 | C.D. Rogers | Machine for Nicking Screws |
 | 275,431 | Apr. 10, 1883 | C.M. Spencer | Metal Screw Machine |
| | 335,955 | Feb. 09, 1886 | J. Petz | Machine for Making Bungs |
 | 469,323 | Feb. 23, 1892 | J.E. Titus, E.L. Bowers | Slotting-machine |
| | 703,121 | Jun. 24, 1902 | W.S. Davenport | Slotting Mechanism for Screw-Machines |
| | 988,802 | Apr. 04, 1911 | C. Munthe, D. Millington | Apparatus for Slitting Screws |
 | 1,465,282 | Aug. 21, 1923 | S.H. Norton | Slotting tool |
