| All Patents in class 74/337.5 |
Patents 1 -
10
of 25
      |
| Picture | Number | Date | Patentee | Title |
 | 742,025 | Oct. 20, 1903 | P.V. Vernon, A. Herbert | Variable Speed Driving Mechanism |
 | 815,642 | Mar. 20, 1906 | W.T. Sears | Speed-changer |
 | 851,842 | Apr. 30, 1907 | W.T. Sears | Power-transmission device |
| | 857,357 | Jun. 18, 1907 | E.A. Muller | Speed Changing Mechanism |
| | 1,099,520 | Jun. 09, 1914 | W. Spacke, D.T. Brownlee, F.W. Spacke | Change-Speed Gearing |
| | 1,686,240 | Oct. 02, 1928 | D.C. Klausmeyer | Multiple-lever twenty-four-speed mechanism |
| | 1,984,052 | Dec. 11, 1934 | D.B. Bullard | Machine Tool Driving Connection |
| | 2,167,748 | Aug. 01, 1939 | S.C. Gebert | Variable Speed Gear Transmission |
| | 2,247,491 | Jul. 01, 1941 | H.E. Darby, H.C. Kemper, W.F. Groene | Transmission Shifter Mechanism |
| | 2,332,381 | Oct. 19, 1943 | W.G. Hoelscher | Lathe Spindle Speed Control |
