US Patent: 599,334
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| Wrench
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| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 31, 1897 |
| Granted: |
Feb. 22, 1898 |
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Patent Pictures:
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William A. Humphrey and Otto D. Kahl patent February 22, 1898 |
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Stan Schulz
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Description: |
| Swinging hook jaw combined with a movable jaw that has a spring-loaded pawl engaging teeth on a rack on the main shank. For some applications, the hook jaw and main shank can operate as a wrench without the presence of the movable jaw. |
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