US Patent: 432,409
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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: |
Nov. 04, 1889 |
| Granted: |
Jul. 15, 1890 |
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Patent Pictures:
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John Hull patent July 15, 1890 |
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Stan Schulz
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Description: |
| Quick-adjust nut wrench with a sliding jaw having rack teeth on the inner edge of the shank. The jaw slides through an opening in the shank. The back lip of this opening has a single tooth-like spur, and the opening allows the sliding jaw to rock back. A leaf spring holds the movable jaw against the spur. This construction allows the jaw to "ratchet" on square nuts. |
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