CA Patent: CA-45,560
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| Wrench
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Patentee:
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| Lewis Petty Davidson (exact or similar names) - Owen, WY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 15, 1894 |
| Granted: |
Mar. 16, 1894 |
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Patent Pictures:
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Lewis Petty Davidson patent March 16, 1894 |
CIPO Data
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Stan Schulz
Lewis P. Davidson patent March 16, 1894 (Canadian Patent Office Record)
Canadian patent no. 45,560 in FLICKR
45,560 in Canadian Patents Database
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Description: |
| A lever on the handle with interrupted threads engages correspondingly interrupted threads on a shaft extending from the movable jaw. This construction provides quick adjustment.
U.S. patent no. 513,308 for this design was superseded by subsequent U.S. patent 554,991. The quick adjusting wrench based on these patents matches the later patent. |
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