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US Patent: 281,431
William Baxter - Jersey City, NJ

USPTO Classifications:
81/132, 81/77

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches

J. Ashton Greene - Brooklyn, NY

Greene, Tweed and Company - New York, NY

John Ashton Greene
Thos. S. Crane
Wm. J. Tanner
Philip Mauro

Patent Dates:
Applied: May 18, 1883
Granted: Jul. 17, 1883

Patent Pictures:
William Baxter patent July 17, 1883
USPTO pdf tiff
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This is an improvement on Baxter's "Diagonal" wrench. The improvement is in strengthening the base of the jaws, and interlocking the wrench halves, to resist jaw spread.

The earlier patent is 14,221, issued February 12, 1856. J. Ashton Greene's February 19, 1884 design patent (no. D14,756) is a further refinement.

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