US Patent: 734,329
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Adjustable Wrench
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Patentee:
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Elisha F. Hirst (exact or similar names) - Richmond, IN |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Apr. 18, 1903 |
Granted: |
Jul. 21, 1903 |
Patent Pictures:
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Elisha F. Hirst patent July 21, 1903 |
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Stan Schulz
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Description: |
The interior spring creates side pressure to prevent the sliding jaw from moving freely. The rotating toothed spiral cam (which sets in a central slot in the shank) provides a stop to adjust the size of the jaw opening. |
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