US Patent: 1,371,679
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Wrench
Speed Wrench
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Patentee:
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| John L. Happy (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Sep. 13, 1919 |
| Granted: |
Mar. 15, 1921 |
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Patent Pictures:
[
1 | 2
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John L. Happy Pat. March 15, 1921 |
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Stan Schulz
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Description: |
| The self-adjusting feature works by pushing the handle into the head to spread the jaws, and swinging movement of the handle closes one or the other of the jaws. The pieces inside the head which effect this motion are detailed on the second sheet of the drawings. |
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