| All Patents in class 192/33R |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 41,403 | Jan. 26, 1864 | N.C. Stiles | Improved Punching-Press | metal punching machines |
| RE3,617 | Aug. 24, 1869 | S. Fowler, administrator, M. Fowler, administrator, G. Fowler, D. Fowler, deceased (estate of) | Improved Machine for Punching Metal | stamping presses |
| 105,632 | Jul. 26, 1870 | E.W. Bliss | Power Press | stamping presses |
| 107,363 | Sep. 13, 1870 | A. Hamlin | Improved trip motion for presses, &c. | punch presses |
| 110,455 | Dec. 27, 1870 | A. Hamlin | Improved power-press | stamping presses |
| 116,383 | Jun. 27, 1871 | M.G. Wilder | Power Press | metal punching machines |
| 138,139 | Apr. 22, 1873 | W.B. Duckworth | Improvement in clutches for machinery | metalworking machine mechanisms |
| 677,644 | Jul. 02, 1901 | J. Doolittle | Punching and shearing machine | metal punching machines |
| 806,916 | Dec. 12, 1905 | C.A. Rich | Clutch-Controlling Mechanism | |
| 2,016,806 | Oct. 08, 1935 | W.L. Schellenbach | Clutch | industrial machine clutches |
| 2,795,307 | Jun. 11, 1957 | F.G. Burg | Cyclically operable power transmission mechanism | drill presses |
| 4,013,152 | Mar. 22, 1977 | C.O. Jones, Jr. | Mechanical clutch for cyclic machines | metalworking machine mechanisms |
