US Patent: 426,223
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| Pipe Wrench
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Patentee:
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| Friedrich Virgien (exact or similar names) - Yonkers, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 19, 1889 |
| Granted: |
Apr. 22, 1890 |
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Patent Pictures:
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Friedrich Virgien patent April 22. 1890 |
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Stan Schulz
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Description: |
| Quick adjustment movable jaw. A spring between the back of the movable jaw frame and main shank holds a gripping pawl in the front portion of the movable jaw in engagement with rack teeth on the main shank. The drawings show alternate forms for the fixed and movable jaws, and details of the spring and related portions of the movable jaw frame. The smaller form was intended to correspond to a "pocket wrench" form. |
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