US Patent: 1,582,445
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Auxiliary Drill Chuck for Braces
Two-jaw mini-chuck that fits where a square/taper shank bit would ordinarily go.
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Patentee:
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| William R. Border (exact or similar names) - Bedford, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 30, 1924 |
| Granted: |
Apr. 27, 1926 |
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Patent Pictures:
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George Langford
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Description: |
| Comprises simply a pair of small, square jaws held apart by a spring. Enables an ordinary two-jaw brace chuck to grip small, round-shanked twist drill bits,for example. Replaced by today's magnetic bit holder. |
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