US Patent: 1,061,934
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Drill-Chuck
Three-jaw key-operated chuck with split gear-ring.
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Patentee:
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| Albert E. Church (exact or similar names) - New Britain, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 22, 1912 |
| Granted: |
May 13, 1913 |
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Patent Pictures:
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One figure omitted; others all condensed here. |
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Jeff Joslin
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Description: |
| The original Jacobs patent 709,014 had a much better way of holding the split gear-ring together. |
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