| All Patents in class 74/353 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
| | 276,463 | Apr. 24, 1883 | B.B. Powell | Speed Changing Mechanism |
| | 324,955 | Aug. 25, 1885 | B.B. Powell | Speed Changing Mechanism |
 | 432,418 | Jul. 15, 1890 | L. Heath, A.J. Martin | Changeable-speed gearing |
| | 465,827 | Dec. 29, 1891 | H.C. Bradford | Tapping and Thread Cutting Machine |
 | 489,317 | Jan. 03, 1893 | A. Mill | Tapping attachment for drills |
| | 494,383 | Mar. 28, 1893 | O.E. Perrigo | Engine-Lathe |
 | 536,615 | Apr. 02, 1895 | E. Flather | Screw Cutting Lathe |
 | 679,568 | Jul. 30, 1901 | E.A. Muller | Engine Lathe |
 | 684,433 | Oct. 15, 1901 | H.R. Isler | Differential Speed Mechanism |
 | 759,111 | May 03, 1904 | I.H. Johnson, Jr. | Variable Speed Gear for Motor Diven Lathes or Other Tools |
