The "bucket" is a 2 station poultry "drinker". The top comes out, fill it with water, put the bottom back on and turn it over, water trickles out small holes and seeks level. Hoods keep the birds from soiling their water (most of the time). They are still available in different sizes. I have 1 gallons for my birds.
Reminds me of when I was 9 yrs old my uncle and I removed doors and took body off a 37 Chevy to make a truck out of it. I had fun driving that thing all over the place. Of course, we never put them back on and finally trashed them. Wish I had that old car back. That was in the middle fifties and my uncle paid $70.00 for the car. Jackie B.