US Patent: 441,245
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| Wrench
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Patentees:
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| Wladyslaw Theodore Kosinski (exact or similar names) - Philadelphia, PA |
| Walter Theodore Kosinski (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 01, 1888 |
| Granted: |
Nov. 25, 1890 |
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Patent Pictures:
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Wladyslaw T. and Walter T. Kosinski patent November 25, 1890 |
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Stan Schulz
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Description: |
| A compression spring in the handle bears against a rod attached to the movable jaw to close the jaw. The adjustment is held by a gripping plate pressed against the main shank by a set screw. |
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