| All Patents in class 74/342 |
Patents 1 -
15
of 44
      |
| Number | Date | Patentee | Title | Type |
| 541,385 | Jun. 18, 1895 | C.J. Paulson | Differential Gear Wheel | metal lathes |
| 815,642 | Mar. 20, 1906 | W.T. Sears | Speed-changer | metalworking machine mechanisms |
| 912,609 | Feb. 16, 1909 | J.R. Perrine | Lathe-feed mechanism | engine lathes |
| 923,930 | Jun. 08, 1909 | H. Baerbalck | Metal-planer | metal planers |
| 943,621 | Dec. 14, 1909 | A.R. Murray, L.W. Anderson | Change Speed Gearing | metal shapers |
| 1,024,220 | Apr. 23, 1912 | H.M. Norris | Gearing | metalworking speed changing mechanisms |
| 1,060,723 | May 06, 1913 | W.W. Vosper | Power Transmission and Control Mechanism. | pipe threading machines |
| 1,090,300 | Mar. 17, 1914 | J. Hartness | Variable Speed Mechanism for Metal Working Machines | metalworking variable speed mechanisms |
| 1,172,341 | Feb. 22, 1916 | E.P. Bullard, Jr. | Speed Changing Mechanism | metalworking speed changing mechanisms |
| 1,233,500 | Jul. 17, 1917 | F.A. Parsons | Transmission Gearing for Milling Machines | metalworking machine mechanisms |
| 1,244,449 | Oct. 23, 1917 | W.R. Carey | Boring and general-use machine | horizontal boring mills |
| 1,342,928 | Jun. 08, 1920 | W.T. Sears | Change-speed mechanism | radial drill presses |
| 1,395,876 | Nov. 01, 1921 | W.N. Tiencken | Brace | geared braces |
| 1,415,515 | May 09, 1922 | C. Bouillon | Change Gear Mechanism | metalworking machine mechanisms |
| 1,475,153 | Nov. 20, 1923 | H. Athenas | Portable electric combination drill | handheld power drills |
