US Patent: 621,869
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| Monkey Wrench
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Patentee:
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| John Stynsberg (exact or similar names) - Biwabik, MN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 03, 1898 |
| Granted: |
Mar. 28, 1899 |
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Patent Pictures:
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John Stynsberg patent March 28, 1899 |
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Stan Schulz
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Description: |
| Adjustable jaw open end wrench with means to adjust the handle angle in relation to the jaw opening. The pin holding the angle adjustment is held in place by a spring catch. |
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