US Patent: 411,807
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| Flange Wrench
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Patentee:
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| James F. Guthrie, Jr. (exact or similar names) - Somerville, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 23, 1888 |
| Granted: |
Oct. 01, 1889 |
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Patent Pictures:
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James F. Guthrie Jr., patent October 1, 1889 |
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Stan Schulz
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Description: |
| Adjustable jaw flange wrench; this type of wrench was used for a specialized type of pipe fitting, where the wrench grips the outside edges of a flat circular face.
More successful flange wrenches used the bolt holes through the flange face as points of attachment. |
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