Yes, it would seem to have been only a brief foray into the domestic appliance market, on their part.
However, they weren't the only 'out-of-field' industrial equipment manufacturers that ventured into this market. Another standout example was Lightburn; best known for their cement mixers and hydraulic jacks, they also brought out at least a couple of washing machine models. A top loader, and a twin tub that had a weird 'swinging arm' agitator.
The top loader was very 'cement-mixer like', with an angled wash bowl, and a vertical spin dryer drum in front of it. Our elderly next door neighbour in Cobram had one of these, in the 1970's. That thing was a really heavy-duty unit!
Let's not mention their automotive foray/folly, the truly awful Zeta car, here...
I'm tending towards the view that the 1950's was an era of a market that was desperate for consumer goods. Which couldn't be supplied from overseas, for two main reasons.
One was the high Australian tariff barriers; the other was that the overseas manufacturers were just about flat out satisfying their own domestic markets, after reverting from 'war effort' products.
So the established local manufacturing firms stepped up to fill the gap, as best they could.