US Patent: 163,342
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| Improvement in drill for drilling metal
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Patentee:
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| Daniel L. Toppan (exact or similar names) - Somerville, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 01, 1875 |
| Granted: |
May 18, 1875 |
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Patent Pictures:
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Toppan 163,342 |
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George Langford
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Description: |
| The flat crank handle is operated back and forth driving the bit in the same direction regardless of the movement of that handle. In configuration this appears almost like a bow drill. Double pinions. |
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