CONGRATULATIONS!
John and I took one of these out of a house in University Park, near the U of MD two or three years ago, in the winter. I remember the snow and ice. We also got a 1960s Wizzard Dryer that was mechanically similar to a WP. Note the WP/KM style agitator cap on top of the impeller and how the heating element forms part of the guard around the impeller. When we disconnected the plumbing, we had to lift the dishwasher up and over the connections that came through the floor to remove it. The lid spring is still strong. When I first met John and Jeff in 81, they had this motor and heater assembly in their weird parts collection. Someone in Baltimore had the sink and DW removed from his kitchen when he remodeled, but that combo was too large to store and we did not have the big warehouse yet and now that thing is too full. That slanted trough detergent dispenser is interesting. My mom sent me a clipping from the Atlanta Journal years ago about a man who still lives in his family's house and still uses this dishwasher that his father put in around 1950. It's been used at least once a day for all of these years and has only needed a small repair.
When they talk about the add-a-dish feature and how the cycle restarts when the lid is opened, that is a nice way of saying that the gravity drain is held closed by electricity so if the dishwasher cycle is interrupted in any way, the drain opens and you lose the wash water. The portable did not have that feature since it had to have an electric drain pump to get the water up through the drain hose to the sink.
Homart was S & R's brand on furnaces, water heaters and other things that were considered home infrastructure. Homart was one of the special names like Coldspot was for refrigerators & Craftsman for tools. That was why, even after the dishwashers were branded Kenmore, they continued for a long time to be sold near the water heaters and built-in kitchens because dishwashers were connected to the plumbing and because the cabinets from back when they were steel were Homart. When we replaced the builder-model water heater in the late 50s, we got a Homart. It had a really nice annodized aluminum badge on it divided diagonally between a pale turquoise and a gold-tone with a silver line drawing of a house diagonally divided between the two colors like the way the Edge Of Night shadow used to move. The turquoise side had a snow flake or two and the gold-tone side had the sun in the sky. Below that in big silver letters was HOMART, but I think that the M and the A had rounded tops.