It looked like a freezer on top of the fridge, there was a hose out the back to take the melted water away into a bucket from memory.
The man would bring the ice block and put it into the top part, and God help you if you left the bottom fridge door open.
I can remember Mum making home made ice cream in it so it must have been pretty cool.
Thats ingenious but at the same time I can imagine the joy of when it was no longer necessary
We changed houses, the next house had nothing like that there, there was a roughly 4-gallon kerosine tin sized frame, covered in butter cloth, the bottoms of which were in a container of water.
Placed on the South ( coldest) side of the house, the water evaporation helped keep it cool.
About a month later we got a real fridge, and Mum was happy again.