| Patents for Hamilton Machine Tool Co. |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 802,489 | Oct. 24, 1905 | H. Baerbalck | Speed-changing device | drill presses |
| 870,759 | Nov. 12, 1907 | H. Baerbalck | Relieving Mechanism for Engine Lathes | metal relieving attachments |
| 923,930 | Jun. 08, 1909 | H. Baerbalck | Metal-planer | metal planers |
| 988,292 | Mar. 28, 1911 | C.D. Gibson, H. Baerbalck | Shaper | metal shapers |
| 994,899 | Jun. 13, 1911 | H. Baerbalck | Gearing | metal lathes |
| 1,003,315 | Sep. 12, 1911 | H. Baerbalck, C.D. Gibson | Gearing | metal lathes |
| 1,258,129 | Mar. 05, 1918 | A.R. McCann | Combined drip-cup and wiper | metal planers |
| 1,358,051 | Nov. 09, 1920 | H. Baerbalck | Feeding mechanism for metal-working machinery | metal planers |
| 1,431,919 | Oct. 17, 1922 | H. Baerbalck | Crank-shaft lathe | metal lathes |
