US Patent: 737,847
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Pipe Wrench
Leader Pipe Wrench
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Patentee:
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| George Walker Johnson (exact or similar names) - Erie, PA |
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Patent Dates:
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| Applied: |
Apr. 11, 1903 |
| Granted: |
Sep. 01, 1903 |
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Patent Pictures:
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George W. Johnson patent Sept. 1, 1903 with 8 inch example from Don Ervin collection |
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Stan Schulz
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Description: |
| The wrench has a swinging "hook" jaw and an adjustable jaw running up the center of a malleable iron combination frame and handle. Manufacturer identification and name "LEADER PIPE WRENCH" taken from Dec. 3, 1908 "IRON AGE."
The adjustable jaw is a carry over from the second of Johnson's two pipe tongs patents (nos. 460,015 and 540,790). |
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