US Patent: 340,233
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| Wrench
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Patentee:
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| Austin McNally (exact or similar names) - Cascade, IA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 15, 1886 |
| Granted: |
Apr. 20, 1886 |
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Patent Pictures:
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Austin McNally patent April 20, 1886 |
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Stan Schulz
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Description: |
| The spring closes the jaws. The cam lever engages and disengages the rack that holds the adjustment. The shape of the rack teeth allows the teeth to disengage on "back motion", thereby giving the wrench ratchet action. |
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