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US Patent: 135,842
Nathan L. Post - East Cleveland, OH

USPTO Classifications:
411/918, 81/124.7, 81/125, 81/177.85

Tool Categories:
wrenches : axle nut wrenches


N. L. Post - Cleveland, OH

C. L. Evert
Lewis W. Ford
Franck L. Ourand

Patent Dates:
Applied: Dec. 23, 1872
Granted: Feb. 11, 1873

Patent Pictures:
Nathan L. Post Pat. Feb. 11, 1873
USPTO pdf tiff
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The patent adds a handle and a rubber nut retainer to "the ordinary carriage wrench." The drawing shows this feature as a rubber ring and notches in the socket. The specifications make a broader claim for including a rubber gripper of some sort in the socket.

Ken Cope's "American Wrench Makers 1830-1930" reprints an 1873 "Scientific American" item indicating the wrench was produced with a rubber roller in one side of the socket rather than the rubber ring shown in the patent drawings.

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