| All Patents in class 408/124 |
Patents 16 -
30
of 118
      |
| Number | Date | Patentee | Title | Type |
| 195,882 | Oct. 09, 1877 | H.C. Bull | Machine for Boring Gun Barrels | horizontal drilling machines |
| 202,477 | Apr. 16, 1878 | T.O. Selfridge | Improvement in wood-boring machines | eggbeater drills |
| 231,361 | Aug. 17, 1880 | W.H. Richards | Ratchet Drill | ratchet drills |
| 246,710 | Sep. 06, 1881 | G.W. Bean | Back-gear clutch for upright drills | industrial machine clutches |
| 253,996 | Feb. 21, 1882 | W.D. Forbes | Screw-cutting die | taps and dies |
| 274,026 | Mar. 13, 1883 | O. Plummer | Post for drilling machines | woodworking post drills |
| 319,502 | Jun. 09, 1885 | G.G. Morrison | Combined Drilling and Boring Machine | drilling and boring |
| 324,100 | Aug. 11, 1885 | J. Ernst | Boring machine | wood drilling and boring |
| 364,254 | Jun. 07, 1887 | J.B. Higdon | Wood-boring machine | drilling and boring |
| 429,525 | Jun. 03, 1890 | J. Herm | Ratchet-brace | ratchet braces |
| 461,800 | Oct. 20, 1891 | H.B. Pullman | Tapping Device | tap and die holders |
| 462,309 | Nov. 03, 1891 | W.E. Gang | Drill Press | drill presses |
| 495,656 | Apr. 18, 1893 | G. Beekman | Mechanical movement | hand drills |
| 506,954 | Oct. 17, 1893 | J.G. Timolat, C. Jacobson | Portable drill | portable metal boring and drilling machines |
| 521,327 | Jun. 12, 1894 | E.E. Anthony | Brace-drill | braces |
