| All Patents in class 92 |
Patents 211 -
225
of 403
      |
| Number | Date | Patentee | Title | Type |
| 1,252,374 | Jan. 01, 1918 | G.H. Gilman | Drilling Machine | |
| 1,255,081 | Jan. 29, 1918 | G.L. Cowan | Piston | wood grinding machines |
| 1,268,270 | Jun. 04, 1918 | R.W. Nazel | Fluid-power hammer | drop hammers |
| 1,268,624 | Jun. 04, 1918 | F.E. Riley | Automatic Grindstone Dresser | mill stone dressers |
| 1,278,157 | Sep. 10, 1918 | C. Johnson | Operating Means for Saw Carriages | sawmill carriages |
| 1,284,108 | Nov. 05, 1918 | C.A. Hultquist | Drilling Machine | |
| 1,293,713 | Feb. 11, 1919 | H.A. Chuse | Steam Engine | steam engine valves |
| 1,348,256 | Aug. 03, 1920 | F.L. Wadsworth | Steam Engine | steam engines |
| 1,349,884 | Aug. 17, 1920 | F.H. Hopkins | Diaphragm Gage | vacuum and pressure gauges |
| 1,353,656 | Sep. 21, 1920 | C.L. Heisler | Fluid Operated Motor | steam turbines |
| 1,364,823 | Jan. 04, 1921 | J.J. Aull | Gas Engine Primer | fuel primers |
| 1,385,134 | Jul. 19, 1921 | F.A. Jimerson | Bit-chuck retainer | drill press chucks |
| 1,411,025 | Mar. 28, 1922 | C.B. Jahnke, F.G. Hobart | Oil Engine Feeding Device | fuel injection apparatus |
| 1,450,032 | Mar. 27, 1923 | J.W. Gardner | Compressor mechanism | air compressors |
| 1,463,305 | Jul. 31, 1923 | S.D. Black, A.G. Decker | Pumping apparatus | |
