US Patent: 455,821
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| Wrench
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Patentee:
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| Frederick F. Schofield (exact or similar names) - Oscoda, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 28, 1890 |
| Granted: |
Jul. 14, 1891 |
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Patent Pictures:
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Frederick F. Schofield patent July 14, 1891 |
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Stan Schulz
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Description: |
| The interior has rack teeth, with a spring-loaded toothed bar on the shank of the movable jaw engaging the rack for adjustment. The "button" to depress the toothed bar is threaded, and can be tightened to hold the adjustment. |
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