| All Patents in class 474/133 |
Patents 16 -
22
of 22
      |
| Number | Date | Patentee | Title | Type |
| 964,051 | Jul. 12, 1910 | H.A. Perkins | Belt shifter and tightener | woodworking power transmission |
| 981,390 | Jan. 10, 1911 | C.D. Rice | Belt-gearing | drill presses |
| 1,019,516 | Mar. 05, 1912 | A.E. Newton | Belt-drive | metalworking power transmission |
| 1,066,440 | Jul. 01, 1913 | D.W. Shollenberger | Feed-controlling device | woodworking power transmission |
| 1,650,668 | Nov. 29, 1927 | C.J. Travers | Tractor | |
| 2,960,893 | Nov. 22, 1960 | W.F. Ocenasek | High-speed, sensitive drilling attachment | drill presses |
| 3,151,494 | Oct. 06, 1964 | R.K. Sedgwick | Backlash Eliminator | rotary tables |
