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| All Patents in class 175/286 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,194 | Sep. 17, 1845 | T.S. Speakman, R.A. Stratton | Apparatus for Boring Rocks or Earth | stone boring and drilling machines | |
| 315,130 | Apr. 07, 1885 | J.W. Day, W.H. Davenport | Cutter Head for Rifling Machines | rifling machines | |
| 410,311 | Sep. 03, 1889 | M.T. Chapman | Expansion Drill | well drilling machines | |