US Patent: 451,024
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| Wrench
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Patentee:
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| Ambrose B. Chadwick (exact or similar names) - Pullman, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 24, 1890 |
| Granted: |
Apr. 28, 1891 |
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Patent Pictures:
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Ambrose B. Chadwick patent April 28, 1891 |
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Stan Schulz
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Description: |
| A wedge shaped adjuster on the shank behind the pivoted jaws is advanced and retracted by an adjusting ring screw. A small compression spring between the jaws just ahead of the pivot point holds the jaws open. |
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