US Patent: 845,360
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| Recess-boring tool
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Patentee:
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| Michael Jungling (exact or similar names) - Kingwood, GA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 23, 1904 |
| Granted: |
Feb. 26, 1907 |
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Jeff Joslin
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Description: |
| Recess-boring tool "which will in one operation bore a recess having a portion of its (depth) cylindrical in contour and the remaining portion tapering or conical in contour. The invention aims to provide a recess-boring tool which can be used in a machine or with a carpenter's ordinary brace..." The flared recess was intended for wedged tenon joints. |
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