US Patent: 6,237
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| Machinery for drilling rocks
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Patentee:
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| Joseph J. Couch (exact or similar names) - North Bridgewater, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Mar. 27, 1849 |
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Jeff Joslin
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Description: |
| In this invention, a rock drill uses a drill rod that passes through a hollow steam-engine piston, and a mechanism alternately grasps the rod and throws it forward. This mechanism works in any orientation as compared to the gravity-powered drills that were common at the time. Couch's assistant, Joseph W. Fowle, would improve on this design by connecting the rod to the cross-head of the engine: see patent 7,972. |
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