| Patents for Colburn Machine Tool Co. |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 707,675 | Aug. 26, 1902 | H.J. Colburn | Circular sawing machine | tablesaws |
| 892,107 | Jun. 30, 1908 | G.R. Willis | Change Speed Gear | metalworking variable speed mechanisms |
| 1,068,324 | Jul. 22, 1913 | L.H. Colburn | Compound Table for Drill Presses | drill presses |
| 1,115,659 | Nov. 03, 1914 | A.A. Geck | Drill Press | drill presses |
| 1,167,887 | Jan. 11, 1916 | F.F. Clarke | Drill-press | drill presses |
| 1,185,060 | May 30, 1916 | F.F. Clarke | Spring Counterbalance for the Rams of Boring Mills | metalworking machine mechanisms |
| 1,185,061 | May 30, 1916 | F.F. Clarke | Lubricating System for the Spindle and Table Drive for Vertical Boring and Turning Mills | vertical boring mills |
| 1,185,064 | May 30, 1916 | F.F. Clarke | Clutch Gearing for Machine Tools | industrial machine gearing |
| 1,188,043 | Jun. 20, 1916 | F.F. Clarke | Stop Index System for Boring Mills | metalworking machine mechanisms |
| 1,262,192 | Apr. 09, 1918 | E.C. Head | Method of Producing Gears | gear making machines |
| 1,351,504 | Aug. 31, 1920 | F.F. Clarke | Center Indicating Device | vertical boring mills |
