US Patent: 554,991
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| Wrench
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Patentee:
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| Lewis Petty Davidson (exact or similar names) - Denver, CO |
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Patent Dates:
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| Applied: |
Jun. 21, 1895 |
| Granted: |
Feb. 18, 1896 |
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Patent Pictures:
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L. P. Davidson patent February 18, 1896 |
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Stan Schulz
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Description: |
| An interrupted screw with a thumb toggle is the adjusting device. It allows for quick adjustment. The thumb toggle portion is housed in a slot in the handle. Corresponding Canadian patent no. CA-52,326 issued May 20, 1896 lists a different assignee. British patent GB-189608370 registered April 21, 1896 does not mention Davidson. The only marking on known examples is "PAT FEB. 28-96". Pat. no. 513,308 is a precursor. |
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