| All Patents in class 91/264 |
Patents 1 -
10
of 18
      |
| Picture | Number | Date | Patentee | Title |
 | 14,991 | May 27, 1856 | J.F. Allen | Operating slide-valves for steam-engines |
| | 27,938 | Apr. 17, 1860 | W.C. Turnbull | Air Engine |
| | 162,714 | Apr. 27, 1875 | J.W. Thompson | Balanced and Cut-Off Valve |
 | 206,398 | Jul. 30, 1878 | C.M. Miller | Slide Valve for Steam Engines |
| | RE8,434 | Sep. 24, 1878 | J.W. Thompson | Improvement in Balanced and Cut-Off Valves |
 | 270,744 | Jan. 16, 1883 | W.A. Clarke | Cut-off valve |
| | 303,477 | Aug. 12, 1884 | D.A. Woodbury | Balanced Slide Valve |
| | RE10,661 | Nov. 10, 1885 | D.A. Woodbury | Balanced Slide Valve |
| | 334,690 | Jan. 19, 1886 | A. Craik | Balanced Valve |
 | 364,207 | Jun. 07, 1887 | C.W. Barnaby | Steam-engine valve |
