| All Patents in class 474/83 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 223,119 | Dec. 30, 1879 | J.S. Detrick | Belt Gearing and Shifting Mechanism for Applying Driving Power with Varying Speed |
| | 252,231 | Jan. 10, 1882 | H. Loed | Mechanical Movement |
| | 273,329 | Mar. 06, 1883 | E. Weston | Method of Controlling the Electrical Transmission of Power |
 | 314,666 | Mar. 31, 1885 | W.H. Gray | Feed mechanism for wood-planing machines |
| | 495,296 | Apr. 11, 1893 | J.W. Boynton | Speed Regulating Device for Lathes |
 | 661,018 | Oct. 30, 1900 | B.G. Luther | Belt shifter and tightener |
 | 772,477 | Oct. 18, 1904 | J. Johnston, J.C. Potter | Turret-lathe |
