I do remember when my parents had the chrome electric coffee pot back in the Sixties, tall and shapely, with the little glass thingie on the top where you could see the coffee percolating and bubbling, I presume so you could tell when to shut it off.
I doubt my parents ever “shut it off”. They just let it percolate, I am sure, until the coffee ran out or turned into mud.
Or both...:)
I’m 83... and I can relate to the chrome electric coffee pot with the glass on top! LOL