Wilson Air Pump Washing Machine
This machine (above) was manufactured in 1910! It has a cone agitator, a wooden tub, and is hand operated.
Yost Gearless Washing Machine
This amazing machine (above) was manufactured only 2 years after the Wilson Air Pump Washer! (1912) It has a dolly agitator, a wooden tub, and is water powered.
Zenith
This machine (above) was manufactured in 1923. It is an electric machine with a copper tub and a dolly agitator. 11 years after the "Yost" the technology was boosted to electric!