US Patent: 933,096
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| Wrench
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Patentee:
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| William Hilliard Munro (exact or similar names) - Sault Ste. Marie, ON Canada |
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Patent Dates:
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| Applied: |
Mar. 25, 1908 |
| Granted: |
Sep. 07, 1909 |
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Patent Pictures:
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William Hilliard Munro patent September 7, 1909 |
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Stan Schulz
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Description: |
| Parallelogram action self-adjusting wrench. Compare to the ELLRICH based on patent no. 366,246 (July 12, 1887).
Produced as the LAKE SUPERIOR (later SUPERIOR) wrench; a small size was given away as a subscription premium by several farm magazines. Earliest production includes "PAT APLD FOR" marking.
Corresponding French patent FR-388,990 was granted Aug. 27, 1908. Improved by pat no. 972,052, issued Oct. 4. 1910. |
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