| All Patents in class 74/342 |
Patents 16 -
30
of 43
      |
| Number | Date | Patentee | Title | Type |
| 1,502,647 | Jul. 22, 1924 | D.C. Klausmeyer | Change Gear | metalworking speed changing mechanisms |
| 1,581,927 | Apr. 20, 1926 | G.L. Kollock | Two-speed gearing for electric drill | handheld power drills |
| 1,660,137 | Feb. 21, 1928 | A.M. Sosa, A.E. Robinson | Drilling Machine | radial drill presses |
| 1,730,161 | Oct. 01, 1929 | F.A. Parsons | Transmission Mechanism | milling machines |
| 1,737,881 | Dec. 03, 1929 | W.F. Groene | Change Gear Mechanism | metalworking machine mechanisms |
| 1,817,036 | Aug. 04, 1931 | R.S. Condon, E.J. Kearney | Rate change device | metalworking machine gearing |
| 1,849,094 | Mar. 15, 1932 | H.L. Johnston | Mixing machine | |
| 1,966,699 | Jul. 17, 1934 | J.B. Armitage | Milling Machine Transmission and Control Mechanism | milling machines |
| 1,976,944 | Oct. 16, 1934 | D.C. Klausmeyer | Feed gear antioverload device | radial drill presses |
| 1,997,338 | Apr. 09, 1935 | S. Einstein, L.F. Nenninger | Milling Machine | milling machines |
| 2,010,556 | Aug. 06, 1935 | L.F. Nenninger, F.A. Hassman | Transmission and control mechanism for milling machines | milling machines |
| 2,022,436 | Nov. 26, 1935 | L.L. Schauer, A.M. Sosa | Convertible upright drill | drill presses |
| 2,077,730 | Apr. 20, 1937 | W.F. Zimmermann | Balanced Helicoidal Change Speed Drive for Shapers | metal shapers |
| 2,199,834 | May 07, 1940 | W.L. Groene, W.F. Groene | Feed Mechanism for Lathes | metalworking machine mechanisms |
| 2,239,443 | Apr. 22, 1941 | H.C. Kemper, W.F. Groene | Transmission Mechanism for Lathes | metalworking machine mechanisms |
