| All Patents in class 192/20 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 162,260 | Apr. 20, 1875 | N.H. Whitten | Improvement in operating paper-calendering rolls |
| | 683,591 | Oct. 01, 1901 | D.B. Bullard | Clutch Mechanism |
 | 766,529 | Aug. 02, 1904 | W. Runge | Clutch for lathes or other purposes |
 | 1,017,242 | Feb. 13, 1912 | A.B. Browne | Combined Breast Drill and Valve Grinder |
 | 1,021,875 | Apr. 02, 1912 | C.L. Libby | Gearing |
| | 1,023,867 | Apr. 23, 1912 | H.M. Norris | Gearing |
| | 1,062,840 | May 27, 1913 | W.L. Miller | Clutch Mechanism |
| | 1,119,385 | Dec. 01, 1914 | H.F. Arnold | Clutch Mechanism |
| | 1,140,326 | May 18, 1915 | B.M. Hanson | Clutch Mechanism |
| | 1,709,339 | Apr. 16, 1929 | F.B. Cockburn | Clutch Mechanism for Lathe Apron Transmission |
