| All Patents in class 470/96 |
Patents 31 -
45
of 77
      |
| Number | Date | Patentee | Title | Type |
| 1,307,831 | Jun. 24, 1919 | A.C. Pletz | Drilling and tapping machine | drill presses |
| 1,395,353 | Nov. 01, 1921 | W.C. Osterholm | Universal Tapping Machine | tapping machines |
| 1,411,538 | Apr. 04, 1922 | A.H. Sweetland | Hand drill | handheld power drills |
| 1,495,080 | May 20, 1924 | D.C. Klausmeyer | Self Indicating Variable Spindle Drive | metalworking variable speed mechanisms |
| 1,507,254 | Sep. 02, 1924 | W.T. Sears | Auxiliary spindle and head for radial drills | radial drill presses |
| 1,519,316 | Dec. 16, 1924 | J.E. Larsh | Device for imparting rotary motion | tapping machines |
| 1,525,134 | Feb. 03, 1925 | H. Hubbell | Tapping machine | tapping machines |
| 1,559,190 | Oct. 27, 1925 | C.F. Sherman | Drill press | drill presses |
| 1,581,927 | Apr. 20, 1926 | G.L. Kollock | Two-speed gearing for electric drill | handheld power drills |
| 1,588,972 | Jun. 15, 1926 | M. Machacek | Hydraulic feeding mechanism for mortising machines | mortising machines |
| 1,613,369 | Jan. 04, 1927 | E.L. Worbois | Nut-Tapping Machine | nut or bolt making machines |
| 1,659,437 | Feb. 14, 1928 | G.E. Merryweather | Double Take-Off Gear | metalworking power transmission |
| 1,660,137 | Feb. 21, 1928 | A.M. Sosa, A.E. Robinson | Drilling Machine | radial drill presses |
| 1,686,383 | Oct. 02, 1928 | D.C. Klausmeyer | Cam Controlled Twenty-Four Speed Mechanism | metalworking speed changing mechanisms |
| 1,718,275 | Jun. 25, 1929 | R.L. Carter | Combined router and work support | routing machines |
