CA Patent: CA-20,932
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| Wrench
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Patentee:
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| Daniel R. Porter (exact or similar names) - Revere, MA |
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Patent Dates:
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| Applied: |
Jan. 13, 1885 |
| Granted: |
Jan. 22, 1885 |
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Patent Pictures:
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Daniel R. Porter patent Jan. 22, 1885 - edited from Canadian Patent Office Record |
CIPO Data
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Stan Schulz
20,932 in Canadian Patents Database
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Description: |
| Hook jaw pipe wrench with the jaw closed by a leaf spring attached to the end of the jaw. The version in this patent matches the spring arrangement in the wrench as produced; in U.S. patent 291,934 the leaf spring is anchored to the handle.
Oct. 25, 1885 AMERICAN MACHINIST has an announcement that Eaton, Cole & Burnham are sole agents, and lists 8 stock sizes by capacity. |
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