| All Patents in class 74/342 |
Patents 1 -
10
of 44
      |
| Picture | Number | Date | Patentee | Title |
 | 541,385 | Jun. 18, 1895 | C.J. Paulson | Differential Gear Wheel |
 | 815,642 | Mar. 20, 1906 | W.T. Sears | Speed-changer |
 | 912,609 | Feb. 16, 1909 | J.R. Perrine | Lathe-feed mechanism |
 | 923,930 | Jun. 08, 1909 | H. Baerbalck | Metal-planer |
| | 943,621 | Dec. 14, 1909 | A.R. Murray, L.W. Anderson | Change Speed Gearing |
| | 1,024,220 | Apr. 23, 1912 | H.M. Norris | Gearing |
| | 1,060,723 | May 06, 1913 | W.W. Vosper | Power Transmission and Control Mechanism. |
| | 1,090,300 | Mar. 17, 1914 | J. Hartness | Variable Speed Mechanism for Metal Working Machines |
| | 1,172,341 | Feb. 22, 1916 | E.P. Bullard, Jr. | Speed Changing Mechanism |
| | 1,233,500 | Jul. 17, 1917 | F.A. Parsons | Transmission Gearing for Milling Machines |
