US Patent: 508,920
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| Pipe Wrench
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Patentee:
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| Leopold Dahlstrom (exact or similar names) - Santa Clara, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 15, 1893 |
| Granted: |
Nov. 21, 1893 |
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Patent Pictures:
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Leopold Dahlstrom patent November 21, 1893 |
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Stan Schulz
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Description: |
| Chain pipe wrench; the shank has a spur end that bears on projecting shoulders on the chain links. An adjusting block on the shank holds a cross piece connecting to the inner end of the extended links that connect the chain to the main shank. |
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