US Patent: 1,392,391
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| Quick Adjustable Monkey Wrench
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Patentee:
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| Frank E. Bartz (exact or similar names) - Pittsburgh, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 02, 1920 |
| Granted: |
Oct. 04, 1921 |
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Patent Pictures:
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Frank E. Bartz patent Oct. 4, 1921 |
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Stan Schulz
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Description: |
| A rod attached to the movable jaw passes through a bore in the handle, and is engaged by a spring-loaded gripper in the handle.
Wrenches with a similar clutch action in the movable jaw were produced, but none are known with a clutch engaging an auxiliary shaft attached to the movable jaw. |
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