US Patent: 618,026
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| Screw-Wrench
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Patentee:
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| John H. Coes (exact or similar names) - Worcester, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 29, 1898 |
| Granted: |
Jan. 17, 1899 |
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Patent Pictures:
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John H. Coes patent January 17, 1899 |
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Stan Schulz
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Description: |
| The patent includes a heating and forging process to "upset" a portion of the wrench shank of a Coes wrench after the adustable jaw, adjusting screw, and ferule have been installed. The ferule and shank are designed so that the "upsetting" firmly secures the ferule to the shank. |
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