| All Patents in class 91/264 |
Patents 1 -
15
of 19
      |
| Number | Date | Patentee | Title | Type |
| 14,991 | May 27, 1856 | J.F. Allen | Operating slide-valves for steam-engines | steam engine valve gear |
| 27,938 | Apr. 17, 1860 | W.C. Turnbull | Air Engine | air motors and turbines |
| 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 | steam engine valves |
| 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 | steam safety valves |
| 303,477 | Aug. 12, 1884 | D.A. Woodbury | Balanced Slide Valve | steam engine valves |
| RE10,661 | Nov. 10, 1885 | D.A. Woodbury | Balanced Slide Valve | steam engine valves |
| 334,690 | Jan. 19, 1886 | A. Craik | Balanced Valve | steam engine valves |
| 364,207 | Jun. 07, 1887 | C.W. Barnaby | Steam-engine valve | steam engine valves |
| 384,637 | Jun. 19, 1888 | J.E. McIntosh | Valve for Steam Engines | steam engine valves |
| 533,177 | Jan. 29, 1895 | A.K. Mansfield | Cut-off-valve mechanism | steam engine valves |
| 1,583,351 | May 04, 1926 | A. Turner, J.N. Heald | Grinding Machine | surface grinders |
| 1,938,762 | Dec. 12, 1933 | F.S. Haas | Grinding Machine | cylindrical grinders |
| 2,000,553 | May 07, 1935 | C.R. Alden | Machine tool | horizontal boring mills |
