| All Patents in class 192/43.1 |
Patents 31 -
45
of 91
      |
| Number | Date | Patentee | Title | Type |
| 593,157 | Nov. 02, 1897 | Z.T. Furbish | Ratchet mechanism | spiral screwdrivers |
| 635,207 | Oct. 17, 1899 | J.M. Tilton | Wrench | ratchet wrenches |
| 719,703 | Feb. 03, 1903 | N.R. Thibert | Bit-stock | |
| 756,388 | Apr. 05, 1904 | W.B. May | Means for converting reciprocatory into rotary motion | spiral screwdrivers |
| 791,766 | Jun. 06, 1905 | Z.T. Furbish | Push screw-driver or drill | spiral screwdrivers |
| 812,198 | Feb. 13, 1906 | J. Gessert | Bit-brace (engineer's) | |
| 819,536 | May 01, 1906 | Z.T. Furbish | Shifter-lock for pawl-and-ratchet tools | spiral screwdrivers |
| 855,292 | May 28, 1907 | R.C. Ellrich | Ratchet Mechanism | ratchet braces |
| 872,635 | Dec. 03, 1907 | H.J. Averbeck | Feed-regulator | metal shapers |
| 875,493 | Dec. 31, 1907 | M.A. Beard | Quick-acting brace-chuck | brace chucks |
| 924,372 | Jun. 08, 1909 | W.A. Peck | Ratchet mechanism | spiral screwdrivers |
| 969,379 | Sep. 06, 1910 | W.B. Lane | Ratchet Mechanism for Screw-Drivers, Wrenches, &c. | ratchet wrenches |
| 977,957 | Dec. 06, 1910 | G.O. Leopold | Ratchet Mechanism for Screw-Drivers, &c. | ratcheting screwdrivers |
| 982,510 | Jan. 24, 1911 | G.O. Leopold | Ratchet mechanism | eggbeater drills |
| 1,063,984 | Jun. 10, 1913 | J.A. Leland | Hand Drill Gearing | eggbeater drills |
