| All Patents in class 408/135 |
Patents 31 -
45
of 74
      |
| Number | Date | Patentee | Title | Type |
| 1,181,580 | May 02, 1916 | H. Dreses | Feeding mechanism for metal-working machinery | drill presses |
| 1,185,060 | May 30, 1916 | F.F. Clarke | Spring Counterbalance for the Rams of Boring Mills | metalworking machine mechanisms |
| 1,216,689 | Feb. 20, 1917 | J.G. Hey | Feed mechanism for drilling-machines | drill presses |
| 1,222,954 | Apr. 17, 1917 | J.F. Judd, J.J. Hogan | Threading mechanism for automatic lathes | metal lathes |
| 1,244,084 | Oct. 23, 1917 | A.A. Shafer | Tapping Machine | tapping machines |
| 1,265,269 | May 07, 1918 | G. Sipp | Automatic Feed Mechanism for Drill Presses | drill presses |
| 1,338,752 | May 04, 1920 | A.M. Sosa | Drilling Machinery | radial drill presses |
| 1,388,875 | Aug. 30, 1921 | J.F. Mirrielees | Feed mechanism for drilling-machines | drill presses |
| 1,489,523 | Apr. 08, 1924 | W.R. Fox, H.D. Corwin | Drilling machine (multiple drill) | |
| 1,538,317 | May 19, 1925 | F.T. Flinchbaugh | Portable Reboring Machine for Engine Cylinders | portable metal drilling machines |
| 1,668,647 | May 08, 1928 | A.M. Johnson | Feed mechanism for drilling machines | drill presses |
| 1,679,529 | Aug. 07, 1928 | A.M. Johnson | Automatic machine tool | tapping machines |
| 1,735,400 | Nov. 12, 1929 | A.M. Johnson | Tool-spindle brake mechanism | drill presses |
| 1,735,401 | Nov. 12, 1929 | A.M. Johnson | Band-brake stop for drill feed shafts | drill presses |
| 1,744,000 | Jan. 14, 1930 | D.C. Klausmeyer | Head Carried Gear Train for Spindle Speed | metalworking speed changing mechanisms |
