| Patents for Louis W. Southgate |
Patents 1 -
24
of 24
      |
| Number | Date | Patentee | Title | Type |
| 480,907 | Aug. 16, 1892 | J. Kindred | Drilling-machine | drill presses |
| 509,408 | Nov. 28, 1893 | R.T. Torkelson | Pipe Wrench | pipe wrenches |
| 536,301 | Mar. 26, 1895 | J.C. Speirs | Method of Making Wrenches | wrench handle components |
| 564,816 | Jul. 28, 1896 | J.V. Chamberlin, R. Aldrich | Wrench | quick adjust wrenches |
| 598,967 | Feb. 15, 1898 | A. Whitcomb | Driving mechanism for planing-machines | metal planers |
| 637,484 | Nov. 21, 1899 | A. Plant | Wrench Handle | wrench handle components |
| 639,785 | Dec. 26, 1899 | J.C. Speirs | Pipe Wrench | pipe wrenches |
| 640,610 | Jan. 02, 1900 | C.E. Williams | Wrench | quick adjust wrenches |
| 660,249 | Oct. 23, 1900 | A.J. Gifford | Drilling-machine | drill presses |
| 669,721 | Mar. 12, 1901 | W.H. Bruce | Pliers or Pipe Tongs | pliers |
| 728,279 | May 19, 1903 | A.E. Newton | Change Gearing for Lathes | industrial machine gearing |
| 895,102 | Aug. 04, 1908 | A.E. Newton | Power-transmitting mechanism | radial drill presses |
| 895,103 | Aug. 04, 1908 | A.E. Newton | Gearing | drill presses |
| 895,104 | Aug. 04, 1908 | A.E. Newton | Gearing | radial drill presses |
| 895,106 | Aug. 04, 1908 | A.E. Newton | Change-speed gearing for engine-lathes | engine lathes |
| 901,503 | Oct. 20, 1908 | C.H. Waymoth | Wood-turning lathe | wood lathes |
| 901,515 | Oct. 20, 1908 | H. Allen | Driving mechanism for spindles | drill presses |
| 945,947 | Jan. 11, 1910 | F.K. Hendrickson | Turret-lathe | turret lathes |
| 962,690 | Jun. 28, 1910 | H. Allen | Driving mechanism for drill-spindles | drill presses |
| 1,019,516 | Mar. 05, 1912 | A.E. Newton | Belt-drive | metalworking power transmission |
| 1,019,517 | Mar. 05, 1912 | A.E. Newton | Weight safety device | drill presses |
| 1,096,188 | May 12, 1914 | C.H. Norton | Apparatus for grinding rolls | grinders |
| 1,118,875 | Nov. 24, 1914 | A.E. Newton | Attachment for turning multiple-diameter shafts | metal lathe accessories and attachments |
| 1,135,095 | Apr. 13, 1915 | F.I. Blake, M.D. Reidy | Calipers or dividers | calipers |
