| All Patents in class 76/5.1 |
Patents 1 -
10
of 27
      |
| Picture | Number | Date | Patentee | Title |
 | 45,850 | Jan. 10, 1865 | W.T. Nicholson | Improved Machine for Forging File Blanks |
| | 261,198 | Jul. 18, 1882 | R. Barton | Dental Grinding Tool |
 | 278,915 | Jun. 05, 1883 | A.H. Emery | Tensile and compressive strength tester |
 | 296,254 | Apr. 01, 1884 | C. Van Haagen | Manufacture of drills |
 | 301,937 | Jul. 15, 1884 | T. Tripp, Jr. | Trip-hammer |
| | 383,882 | Jun. 05, 1888 | W.J. Hogan | Turning Lathe |
| | 435,110 | Aug. 26, 1890 | G.D. Burton | Electric Forging Machine |
| | 459,931 | Sep. 22, 1891 | J. Gutberlet | Machine for Sharpening Drills |
 | 464,577 | Dec. 08, 1891 | L. Mayer | Bush-hammer sharpener |
| | 605,544 | Jun. 14, 1898 | R.J. Good | Drop Hammer |
