US Patent: 1,752,425
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| Wrench
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Patentee:
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| Amos K. Ersland (exact or similar names) - Manhattan Beach, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 22, 1929 |
| Granted: |
Apr. 01, 1930 |
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Patent Pictures:
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Amos K. Ersland patent April 1, 1930 |
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Stan Schulz
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Description: |
| Pliers type wrench with a sliding wedge size adjustment. The jaws remain roughly parallel through the range of sizes.
One known example appears to be hand made and may be a prototype. |
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