| All Patents in class 192/51 |
Patents 1 -
10
of 20
      |
| Picture | Number | Date | Patentee | Title |
| | RE9,819 | Jul. 26, 1881 | N.M. Mendenhall | Traction Engine |
| | 258,472 | May 23, 1882 | B.F. Radford | Clutch Mechanism for Counter Shafting |
 | 370,118 | Sep. 20, 1887 | J.L. Bogert | Friction-clutch |
| | 398,628 | Feb. 26, 1889 | H.J. Barker, F.H. Laforge | Friction Clutch |
| | 406,586 | Jul. 09, 1889 | G. Layng | Apparatus for Reversing Rotary Motion |
 | 593,157 | Nov. 02, 1897 | Z.T. Furbish | Ratchet mechanism |
 | 982,510 | Jan. 24, 1911 | G.O. Leopold | Ratchet mechanism |
 | 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 |
| | 1,750,453 | Mar. 11, 1930 | W.I. Thompson | Tractor |
