US Patent: 260,497
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Auger
Improvements in Expansion-Bits
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Patentee:
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| William L. Parmelee (exact or similar names) - New Haven, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 20, 1882 |
| Granted: |
Jul. 04, 1882 |
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Patent Pictures:
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William L. Parmelee patent July 4, 1882 |
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Stan Schulz
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Description: |
| The size adjustment on this expansion wood bit is a rack on the moving cutter, adjusted by a worm in the head of the bit. |
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