Flash heaters are a "new" invention for Gaia, but they were available in 1921:
A neat little manual washing machine that fitted inside a sink:
A specific advertisement for the Washerette says that it was water-powered. The patent doesn't give much info, but presumably the water was flip-flopped between the two pistons like a vacuum windshield wiper. A patient machine!
Later: I should have checked Youtube first! As usual, EVERYTHING is there. This guy bought one and demonstrated it clearly. Sure enough, the two pistons fill alternately to create reciprocal agitation.
The biggest surprise:
Huxley was a staff writer for House and Garden, doing features on books and wallpaper.
Labels: Entertainment, Patient things
The current icon shows Polistra using a Personal Equation Machine.