| All Patents in class 74/60 |
Patents 1 -
10
of 14
      |
| Picture | Number | Date | Patentee | Title |
 | 10,366 | Jan. 03, 1854 | M.W. Helton | Method of hanging and operating saw-gates |
| | 117,706 | Aug. 01, 1871 | T. Weaver | Spherical Gears |
| | 165,139 | Jun. 29, 1875 | D.K. West | Steam Engine |
| | 563,249 | Jul. 07, 1896 | H.C. Baker | Gas Engine |
| | 580,444 | Apr. 13, 1897 | H.C. Baker | Gas Engine |
| | 630,767 | Aug. 08, 1899 | C.H. Beadle | Rotary Distributing Valve |
| | 924,787 | Jun. 15, 1909 | R. Janney | Variable Speed Transmission Device |
| | 925,148 | Jun. 15, 1909 | H.D. Williams | Variable Speed Gear |
 | 1,679,884 | Aug. 07, 1928 | H.T. Thomas | Attachment for drills |
| | 1,785,733 | Dec. 23, 1930 | D.R. Francis | Control Means for Variable Speed Transmision |
