| All Patents in class 72/456 |
Patents 1 -
15
of 45
      |
| Number | Date | Patentee | Title | Type |
| 10,274 | Nov. 29, 1853 | J.W. Peer | Vertical Trip Hammer | trip and helve hammers |
| 48,394 | Jun. 27, 1865 | M. Hastings | Improved Gold-Beating Hammer | drop hammers |
| 58,880 | Oct. 16, 1866 | J.P. Noyes | Drop Hammer | drop hammers |
| 64,567 | May 07, 1867 | T.F. Preston | Power Hammer | power hammers |
| 99,958 | Feb. 15, 1870 | T. Shaw | Improved Apparatus for Forging Metals | power hammers |
| 118,316 | Aug. 22, 1871 | L.L. Whitlock | Imprvement in Machines for Lifting Drop Weights | drop hammers |
| 172,246 | Jan. 18, 1876 | L. Chapman | Metal Hammering-Machine | power hammers |
| 213,326 | Mar. 18, 1879 | F. Ecaubert | Punching-Press | punch presses |
| 243,986 | Jul. 05, 1881 | S. Shetter | Trip Hammer | trip and helve hammers |
| 333,486 | Dec. 29, 1885 | H. St. Lawrence | Forging Machine | forging presses |
| 343,540 | Jun. 08, 1886 | A.O. Kittredge, F.M. Leavitt | Malleting Machine | power hammers |
| 350,007 | Sep. 28, 1886 | F.M. Leavitt | Drop-hammer | drop hammers |
| 386,076 | Jul. 10, 1888 | F.M. Leavitt | Drop-hammer | drop hammers |
| 424,939 | Apr. 01, 1890 | F.W. Taylor | Power-hammer | power hammers |
| 454,824 | Jun. 23, 1891 | W. Jones | Power Hammer | power hammers |
