US Patent: 434,026
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| Tool Chuck
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Patentees:
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| William Hanby Seiders (exact or similar names) - Spring Green, WI |
| George Henry Hood (exact or similar names) - Spring Green, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 05, 1890 |
| Granted: |
Aug. 12, 1890 |
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Patent Pictures:
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William H. Seiders and George H. Hood patent August 12, 1890 |
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Stan Schulz
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Description: |
| The holder for the jaws is can be turned a half turn in relation to the outer shell, at which time the holder and jaws can slide freely. When retracted, the tank of a bit or other similar tool is inserted, the jaws slid down to grasp the tang or shank, and then a half turn of the shell in relation to the jaws clamps them firmly. |
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