US Patent: 803,397
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| Pipe Wrench and Shifting Spanner
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Patentee:
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| Richard Michael Carroll (exact or similar names) - Petone, Wellington New Zealand |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 29, 1905 |
| Granted: |
Oct. 31, 1905 |
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Patent Pictures:
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Richard Michael Carroll Pat. Oct. 31, 1905 |
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Stan Schulz
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Description: |
| The adjustment mechanism is racks of fine teeth held in engagement by a spring within the "hollow" handle. A button on the side operates a slide which releases the engagement of the rack teeth. The wrench falls in the category some call "pipe grips." |
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