US Patent: 265,151
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Drill-Chuck
Three-jaw chuck with springs to spread the jaws open.
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Patentee:
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| George S. Rominger (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 24, 1882 |
| Granted: |
Sep. 26, 1882 |
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Patent Pictures:
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George Langford
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Description: |
| The inventor claims improvements over his own US Patent No.243,978 to make the chuck easier to assemble. However, in the present invention the jaws are no longer self-adjusting to accommodate tapered bits. Nor has any attempt been made to strengthen the weak places. |
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