We had a Bendix washer in the middle 50’s, bolted to the floor, front loader. My mother had problems with her hands that made some tasks more difficult so they bought an automatic. I remember the installers laying a concrete square in the kitchen floor and putting the fixing bolts in. Plumber and electrician sorted out pipes and wiring.
Only fault we had was the timer failed after some years, dad fitted a new one.
Something like this one but it’s 60 odd years ago so can’t be sure.
https://www.historyworld.co.uk/content/bendix.jpg