Ha! This is the exact model of dishwasher that I grew up with. My parents moved down the block from a 2 bedroom home to a 3 bedroom model shortly before my birth in 1960. I expect that the dishwasher came with the house. It wasn’t very easy to load, but it worked well enough. And of course, built like a tank.
The impeller in the bottom of the tub just spun and splashed the water on the dishes. There was a sort of black funnel just outside the tub at the top left, which can be seen in the photo looking down into the machine. I’m assuming that was some sort of ventilation to improve draining, or perhaps more likely it routed steam and heat through the two vents on the front of the machine, near the top. When I was about 4 or 5, I got the bright idea that these vents were a lot like a toaster, so I stuffed them with Wonderbread. The little red holder at the top was where you loaded the granulated dish powder. It inverted during the cycle. IIRC, it had a little hinged lid, which I don’t see in this photo. You started the cycle by rotating a heavy chrome wheel. It was mounted so that about 60 degrees of the outer edge was exposed. It was replaced in roughly 1975 when my parents remodeled the kitchen, but the monster double oven Crown range survived that remodeling. It’s funny. I have such vivid memories of that GE dishwasher, but absolutely no recollection of its successor.