| All Patents in class 100/256 |
Patents 1 -
15
of 21
      |
| Number | Date | Patentee | Title | Type |
| 125,386 | Apr. 09, 1872 | T. Gaillard | Improvement in Drop Presses | drop hammers |
| 270,146 | Jan. 02, 1883 | N.C. Stiles | Drop-hammer | drop hammers |
| 272,719 | Feb. 20, 1883 | W.J. Liddell | Hay and cotton press | cotton presses |
| 524,311 | Aug. 14, 1894 | W.A. Cornbrooks | Drop Hammer | drop hammers |
| 545,188 | Aug. 27, 1895 | F. Lombard, F.C. Billings | Drop Hammer | drop hammers |
| 1,037,735 | Sep. 03, 1912 | H.E. Derbyshire | Safety-latch for board drop-hammers | drop hammers |
| 1,510,205 | Sep. 30, 1924 | J.T. Beaty | Cotton tamper | |
| 1,512,279 | Oct. 21, 1924 | F. Diehl | Means for producing relative movement between members | veneer machines |
| 1,653,350 | Dec. 20, 1927 | W. Ernst | High Speed Hydraulic Press | hydraulic presses |
| 1,711,378 | Apr. 30, 1929 | W. Ernst | Control Mechanism for Hydraulic Presses | hydraulic presses |
| 1,746,419 | Feb. 11, 1930 | W. Ernst | Control Mechanism for Hydraulic Presses | hydraulic presses |
| 1,763,142 | Jun. 10, 1930 | W. Ernst | Hydraulic Press | hydraulic presses |
| 1,847,073 | Mar. 01, 1932 | W. Ernst | Hydraulic Press | hydraulic presses |
| 1,870,499 | Aug. 09, 1932 | W. Ernst | Hydraulically Operated Drop Hammer | drop hammers |
| 1,884,060 | Oct. 25, 1932 | H.F. MacMillin | Hydraulic Press | hydraulic presses |
