US Patent: 489,317
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| Tapping attachment for drills
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Patentee:
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| Anton Mill (exact or similar names) - Cincinnati, OH |
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Patent Dates:
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| Applied: |
Jun. 06, 1892 |
| Granted: |
Jan. 03, 1893 |
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Jeff Joslin
Vintage Machinery entry for Cincinnati-Bickford Tool Co.
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Description: |
| The inventor was superintendent of the Bickford Drill & Tool Co. (which eventually became the Cincinnati-Bickford Tool Co.), and so we assume this tapping attachment was made by them. |
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