US Patent: 625,457
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| Wrench
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Patentee:
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| William C. McCowan (exact or similar names) - Lancaster, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 29, 1898 |
| Granted: |
May 23, 1899 |
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Patent Pictures:
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William C. McCowan patent May 23, 1899 |
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Stan Schulz
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Description: |
| Internal threads in the handle shift the movable jaw which has a partially threaded shank. A sliding latch on the main shank engages one of a series of notches in the handle to hold the adjustment against accidental change. |
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