US Patent: 206,468
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Improvement in Ratchet-Drills
Design features replaceable parts and directional selector.
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Patentees:
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| James D, McAulis (exact or similar names) - Beaver Falls, PA |
| J. W. Forbes (exact or similar names) - Beaver Falls, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 22, 1878 |
| Granted: |
Jul. 30, 1878 |
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Patent Pictures:
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Figures rearranged slightly. |
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George Langford
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Description: |
| The drawing shows the pinion-shaped ratchet pawl in the right-hand position so as to tighten a right-handed screw. Note the flat spring that allows the pawl to slip on the return stroke. Reversal requires the selector to be pulled back before moving the handle sufficiently to roll the pawl to the opposite end of its recess. |
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