US Patent: 298,248
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| Combined Drill and Countersink
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Patentee:
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| Albert J. Smart (exact or similar names) - Greenfield, MA |
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Patent Dates:
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| Applied: |
Dec. 31, 1883 |
| Granted: |
May 06, 1884 |
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Patent Pictures:
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Albert J. Smart patent May 6, 1884 |
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Stan Schulz
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Description: |
| The patent includes the holder for a drill, with a slot for the tapered cutter which cuts the countersink and also clamps the drill bit in place.
The principle appears in the LIGHTNING COMBINED DRILL AND COUNTERSINK produced by Wiley and Russell. |
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