CA Patent: CA-33,033
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| Wrench
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Patentee:
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| Vincent John McDonnell (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 11, 1889 |
| Granted: |
Dec. 04, 1889 |
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Patent Pictures:
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Vincent J. McDonnell patent Dec. 4, 1889, edited from Canadian Patents Database |
CIPO Data
Espacenet patent
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Stan Schulz
33,033 in Canadian Patents Database
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Description: |
| A mutilated screw on the movable jaw combined with a semi-circular threaded groove in the shank provide the basis for quick adjustment.
Parallel patent for McDonnell's U.S. patent no. 415,183. McDonnell had a several U.S. patents showing an evolution of this design. |
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