US Patent: 174,155
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Wrench
Improved Adjustable Wrench
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Patent Dates:
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| Applied: |
Jan. 31, 1876 |
| Granted: |
Feb. 29, 1876 |
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Patent Pictures:
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John Riley Pat. February 29, 1876 |
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Stan Schulz
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Description: |
| The design features a "T" handle, fixed jaw, and threaded shaft with a flat on which the movable jaw screws in and out. The movable jaw's position is held by a set screw. The wrench is primarily designed as a plumber's spud-nut wrench; it is not strong enough for heavy work.
Known example marked J. RILEY PAT. FEBR. 29, 1876.
Ken Cope's "American Wrench Makers 1830-1930" identifies Riley as the manufacturer. |
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