US Patent: 1,377,772
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| Wrench
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Patentee:
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| Alton Bunker Heimbach (exact or similar names) - Duluth, MN |
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Patent Dates:
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| Applied: |
May 21, 1919 |
| Granted: |
May 10, 1921 |
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Patent Pictures:
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Alton B. Heimbach patent May 10, 1921 |
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Stan Schulz
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Description: |
| The patent is an improvement of Heimbach's June 8, 1915 patent (no. 1,142,426). The improvements are the curved handle which enables the head to reach into places difficult of access, modifications to the adjusting lever, and the movement stop lug at the top of the extension on the movable jaw.
Extant Heimbach wrenches marked HEIMBACH PATENT 1915 incorporate some of the features noted in this patent -- most notably the movement stop on the jaw extension. |
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