| All Patents in class 74/577R |
Patents 16 -
27
of 27
      |
| Number | Date | Patentee | Title | Type |
| 593,157 | Nov. 02, 1897 | Z.T. Furbish | Ratchet mechanism | spiral screwdrivers |
| 827,235 | Jul. 31, 1906 | I.M. Hackney | Ratchet Mechanism | industrial machine mechanisms |
| 902,957 | Nov. 03, 1908 | Z.T. Furbish | Locking mechanism for ratchet screw-drivers | spiral screwdrivers |
| 905,992 | Dec. 08, 1908 | G.A. Cutter | Wrench | ratchet wrenches |
| 906,624 | Dec. 15, 1908 | I.M. Hackney | Ratchet Mechanism | industrial machine mechanisms |
| 982,510 | Jan. 24, 1911 | G.O. Leopold | Ratchet mechanism | eggbeater drills |
| 1,072,807 | Sep. 09, 1913 | F.H. Ayer | Ratchet Driving Mechanism | ratchet wrenches |
| 1,106,860 | Aug. 11, 1914 | A. Bayton | Method or process of forming headed rods | bench vises |
| 1,214,884 | Feb. 06, 1917 | G.J. Blum | Power hacksaw | metal sawing machines |
| 1,406,339 | Feb. 14, 1922 | B.T. Browand | Tool Holder | lathe tool holders and tool posts |
| 1,490,859 | Apr. 15, 1924 | F.H. Sleeper | Friction clutch | friction clutches |
| 2,583,617 | Jan. 29, 1952 | R.G. Knudsen, G.M. Walraven | Ratchet Control Mechanism | ratchet wrenches |
