US Patent: 78,176
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| Improvement in Wrenches
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Patentee:
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| Joshua B. Barnes (exact or similar names) - Fort Wayne, IN |
| USPTO Classifications: |
| 81/99 |
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Patent Dates:
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| Granted: |
May 26, 1868 |
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Patent Pictures:
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Joshua B. Barnes patent May 26, 1868 |
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Stan Schulz
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Description: |
| The shape of the handle and movable jaw are similar to Barnes' June 4, 1867 patent (no. 65,465). This patent addresses the linkage between the handle and movable jaw, and a tension spring which makes the wrench self-adjusting.
Ken Cope's "American Wrench Makers, 1830-1930" shows an 1870 "Scientific American" listing which is the basis for the manufacturer attribution. |
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