My grandmother had a washing machine with a manually fed electric wringer until she moved into assisted living. It would've likely been no newer than the immediate postwar era, as that's when she moved into the house she lived in. I doubt she would've owned it earlier (steel being needed for the war).

It was a bit of a production to do laundry with it. I can buy the argument that it was tough to sell machines that weren't fully automated. It looked fun as a kid, but I can't imagine it's fun for more than a load or two!

Edited to add: they lived north of the Mason-Dixon in an area with very few Black residents.