Model DE 1 was not around long. Notice that it had a pump mounted on a horizontal motor and the separate drain pump. Hotpoint then went to the black Bakelite wash arm with the long slot openings. That machine used the same vertical mount motor as the impeller machines. If you took the wash arm off and went into what was underneath it, you saw this little flying saucer shaped thing, black on top and sort of gray perforated plastic underneath with a small impeller in it. That was the circulating pump housing and impeller. The motor ran at the same speed as the impeller wash models. There was something funny about the water circulation pattern in this machine. You could put skillets or similarly shaped pans on the sides of the lower rack, but you could not put them along the back of the rack facing forward. Somehow the water pattern did not wash "into" items placed there. It cleaned the edges of plates that ended at that position, but it definitely was meant to wash only what was loaded upright and parallel to the left and right sides of the tub, except for bowls, saucepans and things that were tipped down toward the center of the lower rack.
In picture #3 of the DE 1, did anyone notice the large square pan and cover in the top rack? That was the Supermatic Pan that went on Hotpoint's automatic unit where their deep well used to be. It was aluminum, so I don't think it would look like much after automatic dishwasher detergent finished with it, but there it was. Of course, their utensil cycle was meant as a pre soak to loosen baked on or charred soil so I guess you would take it out and finish it with Brillo or SOS pads, but if that's the case, why would the cover be put in also, except to show the capacity of the machine, I guess. I have not seen in any of the owner's manuals a suggestion that, after running the load through the Utensils cycle, you rewash it on the regular cycle, but maybe it would work. With our dishwashers, we would fill pans with water and let them soak in the sink and then put them in the machine and they came out clean. The real secret to cleaning a roasting pan or skillet is to make gravy and cook all of the fond or drippings off of the pan and into the gravy.