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US Patent: 76,900
Improved Wrench for Carriage-Wheels
Levi B. Fisk - Lockport, NY

USPTO Classifications:
81/176.15, 81/74

Tool Categories:
wrenches : axle nut wrenches : axle nut wrenches that lock nut to wheel hub


Not known to have been produced

Wilbur Fisk
C. P.T. La Roche

Patent Dates:
Granted: Apr. 21, 1868

Patent Pictures:
Levi B. Fisk Pat. April 21, 1868
USPTO pdf tiff
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The wrench combines a square socket fitting an axle nut and pegs that extend into holes bored in the wheel hub. The effect is to lock the axle nut to the wheel, and then the nut is removed by turning the wheel. The specifications differentiate this patent from Charles Morgan's August 7, 1866 patent (no. 56980).

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