| All Patents in class 74/357 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 233,702 | Oct. 26, 1880 | C.W. Riley | Screw Cutting Lathe | metal lathes |
| 742,025 | Oct. 20, 1903 | P.V. Vernon, A. Herbert | Variable Speed Driving Mechanism | metalworking variable speed mechanisms |
| 745,812 | Dec. 01, 1903 | W.E. Gang, G.W. Hart | Device for transmitting motion | metalworking machine mechanisms |
| 749,492 | Jan. 12, 1904 | W. Lodge | Variable Speed Mechanism for Lathes | metalworking speed changing mechanisms |
| 803,627 | Nov. 07, 1905 | S.C. Schauer | Speed-Changing Device | metalworking speed changing mechanisms |
| 862,075 | Jul. 30, 1907 | E. Henrikson | Speed-Box and Brake-Operating Mechanism | metalworking machine mechanisms |
| 1,858,889 | May 17, 1932 | W.W. Edwards | Change speed mechanism | drill presses |
| 2,534,993 | Dec. 19, 1950 | E.J. Robichaud | Automatic Bar Stock Machine | metalworking machines |
| 3,253,476 | May 31, 1966 | E. Olah | Variable speed drill | handheld power drills |
