| Patents for E. M. Allen |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 810,634 | Jan. 23, 1906 | H.L. Flather | Change Speed Gearing for Lathes | metalworking speed changing mechanisms |
| 868,074 | Oct. 15, 1907 | E.E. Clark | Shaft Liner and Leveler | special purpose gauges |
| 886,721 | May 05, 1908 | L.G. McKnight | Machine for Making Chair Seats | chair making machines |
| 962,690 | Jun. 28, 1910 | H. Allen | Driving mechanism for drill-spindles | drill presses |
| 963,895 | Jul. 12, 1910 | H.L. Houghton | Ratchet-Tool | ratchet wrenches |
| 1,010,574 | Dec. 05, 1911 | W.W. Bird, L.W. Rawson | Raising and lowering mechanism | drill presses |
| 1,011,183 | Dec. 12, 1911 | A.J. Gifford | Feed-lever connection for drills | drilling and boring |
| 1,018,222 | Feb. 20, 1912 | A.W. Whitcomb | Tail-stock-clamping mechanism | metal lathes |
| 1,056,243 | Mar. 18, 1913 | A.W. Whitcomb | Double-acting clutch | metalworking power transmission |
| 1,075,280 | Oct. 07, 1913 | H. Allen | Gearing | drill presses |
| 1,121,599 | Dec. 22, 1914 | H. Allen | Belt driving mechanism | drill presses |
