| All Patents in class 474/81 |
Patents 16 -
28
of 28
      |
| Number | Date | Patentee | Title | Type |
| 1,180,063 | Apr. 18, 1916 | E.K. Morgan | Belt-shifter | metalworking power transmission |
| 1,210,830 | Jan. 02, 1917 | W. Oesterlein | Belt-shifter mechanism | industrial machine pulleys and belt drive mechanisms |
| 1,310,214 | Jul. 15, 1919 | W.L. Schellenbach | Belt-shifting mechanism | industrial machine pulleys and belt drive mechanisms |
| 1,335,736 | Apr. 06, 1920 | G.E. Jackson | Belt-shifter | industrial machine pulleys and belt drive mechanisms |
| 1,374,109 | Apr. 05, 1921 | H.C. Pierle | Change-of-speed mechanism | drill presses |
| 1,421,485 | Jul. 04, 1922 | E.E. Jones | Cone belt shifter | industrial machine pulleys and belt drive mechanisms |
| 1,440,482 | Jan. 02, 1923 | E. Mills | Belt Shifter for Stepped Cone Pulleys | industrial machine pulleys and belt drive mechanisms |
| 1,483,901 | Feb. 19, 1924 | A.R. McCann | Variable Speed Drive | metal planers |
| 1,517,078 | Nov. 25, 1924 | R.R. Cummins, R.W. Kremer | Belt-Shifting Mechanism | drill press speed change accessories |
| 1,535,346 | Apr. 28, 1925 | W. Schellenbach | Lathe | engine lathes |
| 1,620,214 | Mar. 08, 1927 | D.C. Klausmeyer | Belt Shifter | industrial machine pulleys and belt drive mechanisms |
| 1,670,139 | May 15, 1928 | F.B. Cockburn | Lathe | metal lathe mechanisms |
| 2,263,438 | Nov. 18, 1941 | G.L. Garvin | Belt Shifter | industrial machine pulleys and belt drive mechanisms |
