| All Patents in class 192/51 |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| RE9,819 | Jul. 26, 1881 | N.M. Mendenhall | Traction Engine | steam traction engines |
| 258,472 | May 23, 1882 | B.F. Radford | Clutch Mechanism for Counter Shafting | industrial machine clutches |
| 370,118 | Sep. 20, 1887 | J.L. Bogert | Friction-clutch | industrial machine clutches |
| 398,628 | Feb. 26, 1889 | H.J. Barker, F.H. Laforge | Friction Clutch | industrial machine clutches |
| 406,586 | Jul. 09, 1889 | G. Layng | Apparatus for Reversing Rotary Motion | industrial machine speed and direction changing mechanisms |
| 593,157 | Nov. 02, 1897 | Z.T. Furbish | Ratchet mechanism | spiral screwdrivers |
| 982,510 | Jan. 24, 1911 | G.O. Leopold | Ratchet mechanism | eggbeater drills |
| 1,547,865 | Jul. 28, 1925 | G.O. Leopold, T.J. Fegley | Ratchet mechanism | |
| 1,559,944 | Nov. 03, 1925 | G.W. Emrick | Clutch construction for tapping attachments and the like | tapping heads and chucks |
| 1,750,453 | Mar. 11, 1930 | W.I. Thompson | Tractor | tractors |
| 1,988,967 | Jan. 22, 1935 | G.W. Emrick | Clutch device | tapping heads and chucks |
| 2,228,622 | Jan. 14, 1941 | G.W. Emrick | Clutch mechanism | tapping heads and chucks |
| 2,253,493 | Aug. 26, 1941 | H.F. Bakewell | Machine tool | tapping machines |
| 2,295,516 | Sep. 08, 1942 | W.G. Hoelscher | Head Traverse Mechanism for Radial Drills | metalworking machine mechanisms |
| 2,384,044 | Sep. 04, 1945 | J.E. Poorman | Reversing Mechanism | metalworking speed changing mechanisms |
