US Patent: 382,975
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| Wrench
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Patentee:
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| Benjamin R. Hagar (exact or similar names) - Bradford, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 30, 1888 |
| Granted: |
May 15, 1888 |
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Patent Pictures:
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Benjamin R. Hagar patent May 15, 1888 |
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Stan Schulz
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Description: |
| The movable jaw is held in adjustment by a cam-shaped toothed piece clamped against the shank by a set screw. The rounded face allows for sufficient movement so the pipe does not "lock" in the jaws. The gripping face in the movable jaw has an insert with three sets of teeth. |
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