US Patent: 874,839
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| Pipe Wrench
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Patentee:
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| Charles S. Foster (exact or similar names) - West Duluth, MN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 21, 1907 |
| Granted: |
Dec. 24, 1907 |
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Patent Pictures:
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Charles S. Foster patent December 24, 1907 |
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Stan Schulz
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Description: |
| A leaf spring at the base of the hook jaw keeps the teeth inside the movable jaw base engaged with the rack teeth on the main bar. There is sufficient freedom of motion for the sliding jaw to grip and release pipe. |
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