US Patent: 728,007
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| Wrench
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Patentee:
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| William H. Preston (exact or similar names) - Valley Junction, WI |
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Patent Dates:
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| Applied: |
Sep. 20, 1902 |
| Granted: |
May 12, 1903 |
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Patent Pictures:
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William H. Preston patent May 12, 1903 |
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Stan Schulz
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Description: |
| Adjusting nut with interrupted threads can slide freely on the main shank, or adjust a partial turn when engaged with the threads on the shank. A spring-tensioned lever with projection acts to hold the adjustment. Teeth on the exterior of the adjusting nut have a "one-way" bevel so the nut can be tightened while the lever is pressing against it.
Produced as a nut wrench, pipe wrench, and combination pipe and nut wrench by the Adjustable Wrench and Specialty Mfg. Co. which formed at Oshkosh, WI and moved to Harvard, IL. |
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