| All Patents in class 474/79 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 512,850 | Jan. 16, 1894 | T.F. Vandergrift | Belt Tightener and Shifter | industrial machine pulleys and belt drive mechanisms |
| 1,148,677 | Aug. 03, 1915 | J.G. Hey | Belt-gearing for drill-presses and the like | drill presses |
| 1,173,189 | Feb. 29, 1916 | J.G. Hey | Belt-gearing | metalworking power transmission |
| 1,259,343 | Mar. 12, 1918 | W.J. Bayrer | Belt-gearing | drill presses |
| 1,670,139 | May 15, 1928 | F.B. Cockburn | Lathe | metal lathe mechanisms |
| 1,799,261 | Apr. 07, 1931 | W.F. Stoody | Belt drive and tightening device | industrial machine pulleys and belt drive mechanisms |
| 1,925,036 | Aug. 29, 1933 | G. Gorton | Engraving Machine and the Like | metal engraving machines |
| 2,024,302 | Dec. 17, 1935 | J.J. O'Brien | Motor Mounting | engine lathes |
| 2,027,111 | Jan. 07, 1936 | R.E. Manley | Motorized drive | industrial machine pulleys and belt drive mechanisms |
| 2,066,560 | Jan. 05, 1937 | L.R. Evans | Variable speed drive mechanism | metal lathes |
| 2,073,704 | Mar. 16, 1937 | W.G. Mitchell | Drill press | drill press speed change accessories |
| 2,127,745 | Aug. 23, 1938 | E.R. Lochman | Headstock for a general utility machine tool | metal lathe accessories and attachments |
| 2,154,745 | Apr. 18, 1939 | T.L. Hedgpeth | Power driven tool | drill presses |
| 2,176,572 | Oct. 17, 1939 | T.L. Hedgpeth | Power driven tool | drill presses |
| 2,211,050 | Aug. 13, 1940 | J.E. Boice | Drill press | motor mounts |
