US Patent: 104,982
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| Improvement in grinding-rest for twist-drills
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Patentee:
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| Stephen Ambrose Morse (exact or similar names) - Newark, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jul. 05, 1870 |
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Jeff Joslin
Vintage Machinery entry for Morse Twist Drill & Machine Co.
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Description: |
| The inventor had patented the modern twist drill bit (patent 38,119) and this patent is the earliest device for sharpening twist drills that we have found. Unlike the twist drill bits themselves, which remain substantially unchanged since their invention, drill sharpening machines have evolved and there are a dizzying number of variations. We do not know if the inventor's company manufactured this grinding rest. |
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