| All Patents in class 408/235 |
Patents 16 -
30
of 63
      |
| Number | Date | Patentee | Title | Type |
| 816,322 | Mar. 27, 1906 | J.H. Haskins | Bolt Threading Machine | metal threading machines |
| 832,221 | Oct. 02, 1906 | H.A. Tuttle | Tapping-machine | tapping machines |
| 995,420 | Jun. 13, 1911 | S.H. Bullard | Counterbalancing Device for Machine Tools | metalworking machine mechanisms |
| 1,019,517 | Mar. 05, 1912 | A.E. Newton | Weight safety device | drill presses |
| 1,131,777 | Mar. 16, 1915 | B.O. Gage | Tool Holder for Rotary Drilling and Like Devices | drilling and boring tool holders |
| 1,171,123 | Feb. 08, 1916 | M. Himoff | Drill-press | drill presses |
| 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 |
| 1,375,024 | Apr. 19, 1921 | A.M. Sosa | Feeding Mechanism for Metal Working Machinery | metalworking machine mechanisms |
| 1,388,875 | Aug. 30, 1921 | J.F. Mirrielees | Feed mechanism for drilling-machines | drill presses |
| 1,433,387 | Oct. 24, 1922 | P.H. Leckinger | Drill press | drill presses |
| 1,659,978 | Feb. 21, 1928 | D.C. Klausmeyer | Telescopic Guard System for Drills | drill press accessories |
| 1,680,212 | Aug. 07, 1928 | G. Feather | Electrically-driven drilling machine and like machine tool | drill presses |
| 1,729,583 | Sep. 24, 1929 | D.C. Klausmeyer | Spindle Counter Balance | metalworking machine mechanisms |
