US Patent: 285,733
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Ratchet Drill
Self-Feeding Ratchet Brace
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Patentee:
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| Cemer Thomas Colebrook (exact or similar names) - Islington, Middlesex England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 01, 1882 |
| Granted: |
Sep. 25, 1883 |
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Patent Pictures:
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C. T. Colebrook patent September 25, 1883 |
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Stan Schulz
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Description: |
| The ratchet brace action includes automatic advancement of the drill.
Patented in England Feb. 28, 1882 |
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