US Patent: 1,404,178
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| Pipe Wrench
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Patentee:
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| Clarence L. Moore (exact or similar names) - Seattle, WA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 17, 1921 |
| Granted: |
Jan. 17, 1922 |
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Patent Pictures:
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Patent 1,404,178 - edited from PATENT GAZETTE |
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Stan Schulz
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Description: |
| Adjusting "nut" on the main shank has "tapered" top and bottom edges; the movable jaw has an internal spring. The features combines to "tighten" or "relax" the grip depending on the movement of the handle. Initial patent application re-filed June 25, 1921. |
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