US Patent: 438,243
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| Wrench
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Patentee:
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| Herman Scheatzka (exact or similar names) - Bothell, WA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 30, 1889 |
| Granted: |
Oct. 14, 1890 |
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Patent Pictures:
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Herman Scheatzka patent October 14, 1890 |
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Stan Schulz
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Description: |
| Double ended nut and pipe combination wrench. The movable jaw is held in position on the shank by a cam lever which clamps teeth on the interior face of the movable jaw frame to teeth on the shank of the wrench.
Corresponding Canadian patent no. CA-36,201 was granted March 21, 1891. |
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