US Patent: 1,385,994
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Wrench
Quickly Adjustable Wrench
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Patentee:
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| Alton B. Heimbach (exact or similar names) - Duluth, MN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 29, 1919 |
| Granted: |
Aug. 02, 1921 |
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Patent Pictures:
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Alton B. Heimbach patent August 29, 1919 |
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Stan Schulz
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Description: |
| The spring extension of the lever handle bears against the wrench frame to hold the adjustment. The frame and sliding jaw have fine inclined teeth that are wedged tighter by back pressure.
The specifications note other parallel applications and Heimbach's June 8, 1915 patent (no. 1,142,426). |
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