| All Patents in class 192/93R |
Patents 1 -
10
of 30
      |
| Picture | Number | Date | Patentee | Title |
 | 36,832 | Nov. 04, 1862 | F. Brown, A. Brown | Improvement in friction-coupling |
| | 49,312 | Aug. 08, 1865 | F. Skinner | Tightening Pulleys by Friction |
 | 68,108 | Aug. 27, 1867 | F.J. Plummer | Improvement in clutch-shippers |
| | 80,024 | Jul. 14, 1868 | H.K. Smith | Friction Clutch Pulley |
| | 266,149 | Oct. 17, 1882 | A. Hendey | Hoisting Machine |
| | 303,321 | Aug. 12, 1884 | F.H. Richards | Friction Clutch |
| | 327,082 | Sep. 29, 1885 | W. Hassel | Drop Hammer |
| | 345,670 | Jul. 20, 1886 | A. Campbell | Speed Regulator |
| | 428,634 | May 27, 1890 | W.N. Rumely | Friction Clutch |
 | 456,909 | Jul. 28, 1891 | A.C. Rice | Friction-clutch |
