US Patent: 825,720
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| Wrench
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Patentee:
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| John C. Hackett (exact or similar names) - St. Louis, MO |
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Patent Dates:
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| Applied: |
Oct. 05, 1904 |
| Granted: |
Jul. 10, 1906 |
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Patent Pictures:
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1 | 2
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John C. Hackett patent July 10, 1906 with J.C. HACKETT RACINE WIS No. 3 wrench |
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Stan Schulz
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Description: |
| The movable jaw has a bolt extension through a slot in the main shank, and is held in adjustment by a flat washer with ridged surface that engages similar ridges on the shank, and a threaded handle to tighten the bolt.
One known example marked J.C. HACKETT RACINE WIS.; another J.C. HACKETT with no location indicated. |
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