US Patent: 159,279
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| Improvement in boring-machines
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Patentees:
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| George Richards (exact or similar names) - Gothenburg, Sweden |
| John Richards (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 29, 1874 |
| Granted: |
Feb. 02, 1875 |
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Jeff Joslin
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Description: |
| "The nature of this invention consists in certain improvements in the manner of arranging and driving the spindles in boring-machines where three spindles are employed..." |
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