Patent Model- Improved Washing-Machine

Maker and role
Ephraim McKinley (b.1821, d.1898), Patentee
Washington Wilkie (b.1830, d.1906), Patentee
Production date
Dec 06 1864
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Object detail

Wood, brass, steel
13 1/4 x 10 5/8 x 11 1/8" (33.7 x 27 x 28.3cm)
McKinley and Wilkie’s invention consisted of two sets of swinging plungers which when operated by a crank shaft moved in opposite directions. And while they were not the first to use plungers for clothes washing it is the method in which they are moved is what is the innovation. (Patent Number 45,331)
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