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US Patent: 103,421
Tongue Support
Improved Hammer-Strap For Wagons
Charles Brown - Adrian, MI

USPTO Classifications:

Tool Categories:
wrenches : axle nut wrenches : axle nut wrench combination tools

Aaron G. Salmon - Adrian, MI
Charles Brown - Adrian, MI

Not known to have been produced

M. E. Stewart
J. E. Tooker

Patent Dates:
Granted: May 24, 1870
Antedated: May 13, 1870

Patent Pictures:
Charles Brown Pat. May 24, 1870
USPTO pdf tiff
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The hammer-strap (blackened in on the drawing) has openings which would serve as wrenches for all the nut sizes on a wagon. The "front" square opening would be sized to fit the axle nut. Wrenches of this type are known, although they may not be directly related to this patent.

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