| All Patents in class 74/339 |
Patents 1 -
10
of 24
      |
| Picture | Number | Date | Patentee | Title |
 | 712,133 | Oct. 28, 1902 | F.S. Hawkins | Clutch |
 | 844,546 | Feb. 19, 1907 | W.T. Sears | Power-transmission device |
 | 858,764 | Jul. 02, 1907 | W.T. Sears | Power-transmission apparatus |
 | 1,527,247 | Feb. 24, 1925 | C. Bouillon | Electric Motor Driven Change Speed Device |
| | 1,984,052 | Dec. 11, 1934 | D.B. Bullard | Machine Tool Driving Connection |
| | 2,110,173 | Mar. 08, 1938 | J.B. Armitage, W.M. Pohl | Machine Tool Transmission and Control |
| | 2,164,884 | Jul. 04, 1939 | E.G. Roehm, L.F. Nenninger | Operating Control Mechanism for Milling Machines |
| | 2,499,152 | Feb. 28, 1950 | E.K. Morgan | Control Mechanism for Machine Tools |
 | 2,529,067 | Nov. 07, 1950 | W.A. Gigger, G.B. Hirsch, A.F. Bennett | Gear Shift Control Mechanism |
| | 2,537,409 | Jan. 09, 1951 | E.D. Vancil, F.A. Hassman | Jogging Mechanism for Machine Tools |
