US Patent: 601,851
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| Wrench
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Patentee:
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| Alfred Barclay Frack (exact or similar names) - Girard, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 26, 1897 |
| Granted: |
Apr. 05, 1898 |
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Patent Pictures:
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Alfred Barclay Frack patent April 5, 1898 |
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Stan Schulz
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Description: |
| The "turn handle to adjust" mechanism is accomplished by a ball in the outer handle that moves in a spiral groove on the outside of the extended shank of the movable jaw. A sliding latch can be slid into one of a series of notches in the flanged end of the outer handle to hold the adjustment. |
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