| All Patents in class 72/441 |
Patents 1 -
10
of 57
      |
| Picture | Number | Date | Patentee | Title |
| | 24,428 | Jun. 14, 1859 | B. Hotchkiss | Trip Hammer |
 | 30,343 | Oct. 09, 1860 | E. Paye | Power Hammer |
| | 39,924 | Sep. 15, 1863 | B. Hotchkiss | Improved Atmosheric Trip-Hammer |
 | 62,407 | Feb. 26, 1867 | A.J. Grainger | Improved Forging Apparatus |
 | 88,980 | Apr. 13, 1869 | T.T. Prosser | Improved power-hammer |
 | 136,253 | Feb. 25, 1873 | J.M. Long | Power Hammers |
 | 144,969 | Nov. 25, 1873 | W. Evans | Machines for Forging Hammers |
| | 170,868 | Dec. 07, 1875 | C. Lusted | Drop-Hammer |
 | 206,665 | Aug. 06, 1878 | C.W. Corr | Power Hammer |
 | 244,370 | Jul. 19, 1881 | A. Beaudry | Power-hammer |
