US Patent: 773,933
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| WRENCH
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Patentee:
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| Ebenezer Fisher (exact or similar names) - Philadelphia, PA |
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Patent Dates:
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| Applied: |
Oct. 07, 1903 |
| Granted: |
Nov. 01, 1904 |
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Patent Pictures:
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Patent 773,933 - edited drawing |
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Stan Schulz
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Description: |
| "Girth grip" type structure with provisions for self-adjustment to compensate for irregular surfaces and small variations in size of pipe or similar round objects.
Fisher Wrench Co. was founded in 1903, and is recorded as "default" in 1911. A 1906 New Jersey Industrial Directory lists the company with 10 employees. This design probably was produced for some time during that interval.
Corresponding Canadian patent CA-98,248 published March 27, 1906 shows slightly different shapes for some of the component parts. Reissue patent RE12,438 has extra figures in the drawing and corresponding alterations in specifications and claims. |
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