US Patent: 1,828,142
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| Combination Drift Pin and Wrench
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Patentee:
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| George H. Herdman (exact or similar names) - Erie, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 26, 1930 |
| Granted: |
Oct. 20, 1931 |
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Patent Pictures:
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George H. Herdman Pat. October 20, 1931 |
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Stan Schulz
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Description: |
| The tapered handle is the drift pin for aligning bolt holes in heavy construction, etc. The patented feature in this design is the striking surface adjacent to the open end wrench head. |
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