My mother had an old Bendix front loader. I don't recall all the
details, but it used to walk across the floor from vibration. Not sure
how well it cleaned the clothes. It replaced an old Maytag wringer
washer. That was back about 1950.

I had one that done the same, it cleaned fairly good I thought. It set
on a cement floor in the basement and moved around quite a bit, you had
to be on hand when using it.