US Patent: 452,053
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| Multiple drilling-machine
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Patentee:
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| Francis H. Richards (exact or similar names) - Hartford, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 10, 1891 |
| Granted: |
May 12, 1891 |
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Patent Pictures:
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1 | 2
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Jeff Joslin
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Description: |
| Francis H. Richards was a highly prolific inventor. Co-assignee Eckley Coxe was a mining engineer specializing in coal. A search failed to turn up any evidence that this multi=spindle drilling machine was ever manufactured. See also patents 421,517 and 460,692. |
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