| All Patents in class 91/172 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 119,039 | Sep. 19, 1871 | D.B. Caldwell, J.H. McGowan | Steam Engine |
| | 143,292 | Sep. 30, 1873 | D.B. Caldwell, J.H. McGowan | Crank-Connection for Steam Engines |
| | 503,975 | Aug. 29, 1893 | E.S. Matthews | Hydraulic valve-gear |
 | 693,629 | Feb. 18, 1902 | J.E. Lockwood, E.E. Thomas | Means for automatically controlling sawmill-carriages |
 | 2,604,911 | Jul. 29, 1952 | B.W. Taube | Fluid actuated sawmill dogging mechanism |
 | 2,619,072 | Nov. 25, 1952 | E.C. Clarke, Jr., P.A. Rickrode | Drop hammer control |
 | 2,742,802 | Apr. 24, 1956 | H.A. Weyer, E.C. Clarke | Impact device |
 | 2,761,473 | Sep. 04, 1956 | J.A. Denton | Mechanism for controlling the feed works of a resaw |
| | 3,003,472 | Oct. 10, 1961 | D.C. Miller, R.M. Ferris | Quill Actuating and Clamping Mechanism |
