CA Patent: CA-41,791
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| Screw Wrench
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Patentee:
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| William C. Riesberry (exact or similar names) - Carberry, MB Canada |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 23, 1892 |
| Granted: |
Feb. 02, 1893 |
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Patent Pictures:
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William C. Riesberry patent February 2, 1893 |
CIPO Data
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Stan Schulz
Search Canadian Patents 1869-1894
41,791 in Canadian Patents Database
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Description: |
| The wrench is capable of ratchet action, by virtue of the hinge and spring on the shank of the "fixed" jaw. The jaws are shown smooth for nuts, or with teeth to grip pipe.
U.S. patent 491,721 (February 14, 1893) is a parallel patent for the same design. |
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