US Patent: 22,947
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Improvement in Construction of Screw Wrenches
Foster's Unyielding Grip Wrench
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Patentee:
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| Dan P. Foster (exact or similar names) - Shelburne Falls, MA |
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Patent Dates:
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| Granted: |
Feb. 15, 1859 |
| Reissue Information: |
| Reissued as RE5,914 (Jun. 16, 1874) |
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Patent Pictures:
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Dan P. Foster patent February 15, 1859, with 1870 J.J. WALWORTH catalog listing |
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Stan Schulz
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Description: |
| The adjustable jaw "floats" in relation to shank and fixed jaw. Manufacturer info. taken from Kenneth Cope's "American Wrench Makers 1830-1930." Header on reissue patent No. 5,914 notes the patent was extended seven years from the original expiration.
An 1870 WALWORTH catalog lists 3 sizes - 10", 14" and 18". |
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