| All Patents in class 474/72 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
| | 206,621 | Jul. 30, 1878 | W.R. Schürmann | Changing Speed |
 | 289,607 | Dec. 04, 1883 | H. Bilgram | Metal-planer |
 | 418,383 | Dec. 31, 1889 | V.F. Prentice | Drilling-machine |
| | 439,080 | Oct. 21, 1890 | F.B. Miles | Mechanism for Operating Clutching and Belt Shifting Devices |
| | 586,293 | Jul. 13, 1897 | J.E. Smith | Speed Changing Mechanism for Lathes, Drills or Similar Machines |
| | 948,697 | Feb. 08, 1910 | B.M. Hanson | Gearing |
| | 1,439,747 | Dec. 26, 1922 | J.F. Mirrielees | Drive mechanism for drilling and like machines |
 | 2,075,240 | Mar. 30, 1937 | H.E. Tautz | Speed change mechanism for screw machines |
| | 2,205,462 | Jun. 25, 1940 | G.B. Hirsch, A.F. Bennett | Machine Tool |
| | 2,474,104 | Jun. 21, 1949 | H.C. Kemper, W.F. Groene | Drive Mechanism for Automatic Lathes |
