US Patent: 771,169
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| Wrench
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Patentee:
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| George McKercher (exact or similar names) - Jackson, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 11, 1904 |
| Granted: |
Sep. 27, 1904 |
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Patent Pictures:
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Patent 771,169 -- edited drawing |
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Stan Schulz
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Description: |
| Improvement to previous McKercher designs, with the adjustment positioning mechanism being a spring-tensioned slide.
Known McKercher wrenches did not incorporate this feature.
Relevant McKercher patents include: 643,504, 729,504 and this patent. |
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