Stole this image from Homoe in another thread—thanks (maybe it's already been posted)
Wringer Washer
I used one in the early 70s when I was in high school. Had to rinse each load three times so had to fill up the washer 4 times (to wash once, to rinse three times) for every load. Yes, it was better than having to wash clothes at the river, but it was laborious. I would sometimes add a drop or two of blue coloring to brighten my white clothes. Haven't done that in years.