| All Patents in class 91/334 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 195,804 | Oct. 02, 1877 | A. Cunningham | Auromatic Expansion Gearing for Steam Engines |
 | 407,806 | Jul. 30, 1889 | J. Peebles, E.J. Woolf | Valve Gear for Engines |
 | 455,872 | Jul. 14, 1891 | J. Peebles, E.J. Woolf | Valve Gear for Engines |
| | 540,757 | Jun. 11, 1895 | F.W. Ofeldt | Vapor Engine |
| | 630,767 | Aug. 08, 1899 | C.H. Beadle | Rotary Distributing Valve |
| | 1,036,058 | Aug. 20, 1912 | A.D. Baker | Reversible Variable Cut-Off Valve Gear for Locomotives |
| | 1,425,631 | Aug. 15, 1922 | H.C. Clay | Valve Gear Mechanism |
