| All Patents in class 74/337.5 |
Patents 1 -
15
of 25
      |
| Number | Date | Patentee | Title | Type |
| 742,025 | Oct. 20, 1903 | P.V. Vernon, A. Herbert | Variable Speed Driving Mechanism | metalworking variable speed mechanisms |
| 815,642 | Mar. 20, 1906 | W.T. Sears | Speed-changer | metalworking machine mechanisms |
| 851,842 | Apr. 30, 1907 | W.T. Sears | Power-transmission device | metalworking machine mechanisms |
| 857,357 | Jun. 18, 1907 | E.A. Muller | Speed Changing Mechanism | metalworking speed changing mechanisms |
| 1,099,520 | Jun. 09, 1914 | W. Spacke, D.T. Brownlee, F.W. Spacke | Change-Speed Gearing | speed gearing and transmissions |
| 1,686,240 | Oct. 02, 1928 | D.C. Klausmeyer | Multiple-lever twenty-four-speed mechanism | tapping machines |
| 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 | industrial machine gearing |
| 2,247,491 | Jul. 01, 1941 | H.E. Darby, H.C. Kemper, W.F. Groene | Transmission Shifter Mechanism | metalworking machine mechanisms |
| 2,332,381 | Oct. 19, 1943 | W.G. Hoelscher | Lathe Spindle Speed Control | metal lathe mechanisms |
| 2,346,660 | Apr. 18, 1944 | E.P. Bullard, L.E. Alvey, P.H. Lange | Feed Control for Machine Tools | |
| 2,395,433 | Feb. 26, 1946 | V.v. Sundt | Apron Feed Change Mechanism | metalworking power transmission |
| 2,469,881 | May 10, 1949 | H.E. Laubach, V.J. Kramer, R.C. Johnson | Headstock Transmission Gear Shifting Mechanism | metalworking machine mechanisms |
| 2,486,254 | Oct. 25, 1949 | T.S. Briskin, J.C. Zivny | Control mechanism for electrically driven tools | handheld power drills |
| 2,497,302 | Feb. 14, 1950 | F.A. Fritzsch | Automatic Lathe Control | automatic lathes |
