US Patent: 603,575
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| Adjustable Wrench
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Patentee:
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| Wallace O. Parker (exact or similar names) - Norman, Oklahoma Territory |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 24, 1897 |
| Granted: |
May 03, 1898 |
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Patent Pictures:
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Wallace O. Parker patent May 3, 1898 |
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Stan Schulz
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Description: |
| A toothed gear wheel in the movable jaw meshes with gear teeth on the main shank. A spring-loaded toothed lever catches a notch in the gear wheel to hold the adjustment.
The arrangement facilitates one-handed use. |
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