US Patent: 598,487
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| Monkey Wrench
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Patentee:
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| Peter Quarelli (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 04, 1897 |
| Granted: |
Feb. 01, 1898 |
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Patent Pictures:
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Peter Quarelli patent February 1, 1898 |
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Stan Schulz
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Description: |
| A compression spring opens the jaws; the movable jaw is closed by a gear and ratchet operated by a lever handle. A latch is provided to hold the jaws in firm contact with a nut. The main handle has a hand opening, and a screwdriver tip at the end. |
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