US Patent: 1,023,023
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| Gearing
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Patentee:
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| George O. Leopold (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 09, 1912 |
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George Langford
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Description: |
| The #50 drill is shown in the drawings. This patent is for a device that will lock the shaft at any point for the removal and insertion of bits. The #50 I own will not do that. The only patent date on that one is the 1897 patent. |
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