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US Patent: 189,439
Vehicle Hub and Box
Improvements in Wheel Hubs and Boxes
George W. Eldridge - Chatham, MA

USPTO Classifications:

Tool Categories:
wrenches : axle nut wrenches
wrenches : auxiliary wrenches

George W. Eldridge - Chatham, MA
Joseph Raymond - Harwich, MA

Not known to have been produced

Danforth S. Steel
J. M. Maon
F. L. Ourand
H. Aubrey Toulmin

Patent Dates:
Applied: Jan. 20, 1877
Granted: Apr. 10, 1877

Patent Pictures:
George W. Eldridge Pat. April 10, 1877
USPTO pdf tiff
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The patent is for a wheel hub system where the nut holding the wheel to the axle is on the "inside" of the wheel. The patent includes a special-purpose wrench to tighten and loosen the nut.

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