| All Patents in class 74/441 |
Patents 1 -
15
of 41
      |
| Number | Date | Patentee | Title | Type |
| 206,067 | Jul. 16, 1878 | R. Allison | Feed Screw and Nut For Rock Drills, etc. | auxiliary wrenches |
| 253,266 | Feb. 07, 1882 | S. Darling | Screw Nut | nut or bolt making machines |
| 439,660 | Nov. 04, 1890 | A. Holmquist | Feed Screw and Nut for the Same | metalworking power transmission |
| 458,325 | Aug. 25, 1891 | A.T. Gifford | Milling-machine | milling machines |
| 513,683 | Jan. 30, 1894 | F. Holz | Milling Machine | milling machines |
| 520,918 | Jun. 05, 1894 | J. Flather | Adjustable Stop for Taper Turning Lathes | metal lathe accessories and attachments |
| 525,771 | Sep. 11, 1894 | E.H. Parks | Mechanism for Taking Up Lost Motion | |
| 525,780 | Sep. 11, 1894 | J. Boynton | Mechanism for Taking Up Lost Motion | metalworking machine mechanisms |
| 555,604 | Mar. 03, 1896 | W.A. Keyser | Feed Screw for Rock Drills | stone boring and drilling machines |
| 596,232 | Dec. 28, 1897 | F.E. Schmitt | Roller-frame adjustment for sanders | sanding machines |
| 1,256,471 | Feb. 12, 1918 | T. Genero | Wear Compensating Feed Screw for Drills | |
| 1,397,731 | Nov. 22, 1921 | F.A. Parsons, J. Goetz | Table Operating Mechanisim for Machine Tools | metalworking machine mechanisms |
| 1,726,377 | Aug. 27, 1929 | J.B. Armitage | Transmission for Machine Tool Supports | milling machines |
| 1,874,491 | Aug. 30, 1932 | H. Fritschi | Grinding Machine | grinding machines |
| 1,955,954 | Apr. 24, 1934 | L.A. Dumser | Back-lash compensator | |
