US Patent: 265,990
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Ajustable Bit and Drill Chuck
Sliding-jaw two-jaw chuck
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Patentee:
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| George H. Summers (exact or similar names) - Beloit, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 07, 1882 |
| Granted: |
Oct. 17, 1882 |
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Patent Pictures:
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Patent images have been rearranged to fit this format. |
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Steve Gosselin (GL)
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Description: |
| This design's claim to fame is that the chuck can be adjusted not only to fit the diameter of a bit's shank, but also to fit the length of the shank. |
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