US Patent: 87,774
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Improvement in Wrenches
Mode of Constructing a Tubular Adjusting Screw-Wrench
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Patent Dates:
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| Granted: |
Mar. 16, 1869 |
| Antedated: |
Feb. 27, 1869 |
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Patent Pictures:
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Hewet Pat. Feb. 27, 1869 |
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Description: |
| Tubular adjustment member with male threads engages female threads cut in adjustable jaw. The 5 inch size was marketed as the Hewet "Little Giant" Screw Wrench. The patent drawings show internal handle differences between iron handle and wood handle versions. |
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