| All Patents in class 74/422 |
Patents 31 -
42
of 42
      |
| Number | Date | Patentee | Title | Type |
| 1,727,984 | Sep. 10, 1929 | A.M. Johnson | Spindle sleeve for drilling machines | drill presses |
| 1,744,885 | Jan. 28, 1930 | H.J. Siekmann, W.F. Groene | Machine Tool | machine tool controls |
| 1,753,778 | Apr. 08, 1930 | J.C. Drader | Rack | gear cutting tools |
| 1,898,084 | Feb. 21, 1933 | J.C. Drader | Lead Testing Machine | gear measuring machines |
| 2,343,504 | Mar. 07, 1944 | K.F. Gallimore | Table Drive for Machine Tools | metalworking power transmission |
| 2,453,656 | Nov. 09, 1948 | E.P. Bullard | Rack and Pinion Gear Means | |
| 2,613,556 | Oct. 14, 1952 | W.L. Gaskell | Drill press | drill presses |
| 3,073,589 | Jan. 15, 1963 | G. Hohwart | Work clamping fixture | work holding |
| 3,220,276 | Nov. 30, 1965 | E.C. Bruns | Position Analog Unit for Automatic Controls | machine tool controls |
| 3,282,309 | Nov. 01, 1966 | H.M. Parker, F.H. Field | Multi- purpose power tool | combination machines |
| 3,370,478 | Feb. 27, 1968 | L.D. Martin | Gear train error compensator for dial indicators and the like | |
| 3,786,938 | Jan. 22, 1974 | E.E. Kirkham | Reversing Drive for a Tool Changer | tool changers and storage mechanisms |
