| All Patents in class 72/431 |
Patents 1 -
10
of 51
      |
| Picture | Number | Date | Patentee | Title |
| | 52,447 | Feb. 06, 1866 | A. Rix | Forging Apparatus |
 | 108,326 | Oct. 18, 1870 | J. Hay, J.C. Butterfield | Improvement in trip-hammers |
 | RE4,470 | Jul. 18, 1871 | J.C. Butterfield, J. Hay | Improvement in trip-hammers |
 | 136,253 | Feb. 25, 1873 | J.M. Long | Power Hammers |
| | 144,638 | Nov. 18, 1873 | G. Stacy | Revolving Hammers |
 | 156,276 | Oct. 27, 1874 | J.C. Butterfield | Improvement in power-hammers |
| | 157,695 | Dec. 15, 1874 | J.A. Nichols, J.L. Piper | Metal-Riveting Machines |
| | 166,703 | Aug. 17, 1875 | W.J. Clark, W.H. Clark, A.O. Kittredge | Mallets for Smoothing Sheet Metal |
 | 208,719 | Oct. 08, 1878 | M. Deering | Improvement in power-hammers |
| | 225,238 | Mar. 09, 1880 | C.D. Rodgers | Machine for Hammering Draw Plates |
