US Patent: 1,122,915
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| Wrench
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Patentee:
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| Hans C. Hallum (exact or similar names) - Keokuk, IA |
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Patent Dates:
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| Applied: |
May 09, 1914 |
| Granted: |
Dec. 29, 1914 |
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Patent Pictures:
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U.S. patent 1,122,915 - edited image. |
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Stan Schulz
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Description: |
| Insertable leaves with pins on the back side to keep them in alignment provide size adjustments for a double open-end wrench.
A known example marked "HALLUM WRENCH PAT 12-29-1914" does not retain any of the "loose" parts. |
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