US Patent: 314,517
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| Wrench
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Patentee:
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| Isaiah Cressey (exact or similar names) - Boston, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 03, 1884 |
| Granted: |
Mar. 24, 1885 |
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Patent Pictures:
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Isaiah Cressey patent March 24, 1885 |
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Stan Schulz
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Description: |
| A spring-loaded rocking pipe jaw on a screw-adjusted base. Ken Cope's "American Wrench Makers 1830-1930" shows this patent produced by the Porter Manufacturing Company of Revere, MA.
Although not explicitly mentioned in the specifications, it could be considered an improvement on Cressey's March 7, 1876 patent (no. 174,354). |
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