| All Patents in class 72/437 |
Patents 16 -
30
of 44
      |
| Number | Date | Patentee | Title | Type |
| 102,731 | May 03, 1870 | J. Urie | Making Plows | forging dies |
| 106,720 | Aug. 23, 1870 | N.C. Perry | Improvement in Machines for Bending Screw-Eyes | metal twisting machines |
| 112,036 | Feb. 21, 1871 | B. Hershey | Trip Hammer | trip and helve hammers |
| 120,017 | Oct. 17, 1871 | I. Althouse | Improvement in Power Hammers | power hammers |
| 120,412 | Oct. 31, 1871 | P. Breen | Improvement in Tilt Hammers | drop hammers |
| 130,877 | Aug. 27, 1872 | N.C. Stiles | Improvement in drop-hammers | drop hammers |
| 173,510 | Feb. 15, 1876 | E.J. Soligny | Machine for Embossing and Chasing Metal | embossing and knurling machines |
| 225,829 | Mar. 23, 1880 | E. Tolman, J. Hewitson | Machine for Ornamenting Metal Surfaces | embossing and knurling machines |
| 260,215 | Jun. 27, 1882 | W. Mason | Drop Hammer | drop hammers |
| 402,526 | Apr. 30, 1889 | H.B. Hughes | Gold Beater's Hammer | jeweler |
| 443,119 | Dec. 23, 1890 | E.E. Slick | Apparatus for Stamping Metal Bars | power hammers |
| 463,259 | Nov. 17, 1891 | E.D. Estrada | Machine for Testing the Strengh of Metals | testing machines |
| 507,239 | Oct. 24, 1893 | C.H. Norton | Riveting Machine | riveting machines |
| 509,897 | Dec. 05, 1893 | T. Murphy, W.P. Hatch | Drop Hammer | drop hammers |
| 557,719 | Apr. 07, 1896 | W.S. Taylor | Nose Ringer | nose ring tools |
