US Patent: 536,040
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| Wrench
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Patentee:
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| James C. McQuilkin (exact or similar names) - Industry, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 20, 1894 |
| Granted: |
Mar. 19, 1895 |
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Patent Pictures:
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James C. McQuilkin patent March 19, 1895 |
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Stan Schulz
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Description: |
| Quick-adjust nut wrench. The movable jaw has two spring-loaded ratchet pawls that alternately engage rack teeth on the main shank, doubling the effective number of adjustments within the overall size range. |
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