I remember, I remember, I remember...
This was the washing machine my mother had from the time I was an infant (around 1949) until I was in high school. When I was a little kid I watched her use it hundreds of times. She more than once took it apart to clean it. Lid off, agitator unscrewed, wash basket removed. I remember the triangular shape to the top of the agitator shaft, and the fact that the water inlets were different (recirculate flume vs. fresh water inlet flumes). You had to mash back the recirculate flume when reinstalling the tub. I remember the screened holes in the upper tub flange. My mother was not interested in the thing as a machine, so she couldn't answer half of the quesions I posed.
My dad, however, did self-repair many times over the years. He marveled many times over the fact that the machine had three separate electric motors: main drive, recirculator pump, and drain pump. When he was finally ready to replace it he kept the two pump motors lying about the basement for another 25 years until they sold the house. He kept them because he was a dedicated believer of reusing stuff in new, unthought-of applications; and he wanted to do something with them.
When I was a little kid, this was the highest-technology device in our home. Seeing it opened up taught me that such things could be done, and I am sure drove my own interests in that direction. What a treat to see this machine once again.