Thanks for the neat ads!
Actually, the original Spacemates with their straight front had a different mechanism from the slant front machines. The one thing they shared was that both tubs settled a bit lower as they filled with water.
The specs for the flat front Wards machines with three vane tubs do not match the machines Westinghouse marketed under their own label. As usual for deluxe Wards machines, they were heavier on control panel than on machine; like all hat and no cattle. I have seen three vane Westinghouse tubs in the old Spacemates where the vanes were part of the porcelainized steel tub, but never in a 12 pound tub. I wonder if they were like the plastic vanes in the two vane tubs with screw-mounted vanes, but without the potato pulley? That way, I guess they could use the round pulley like the old Spacemates used--cheaper maybe, but they do state multi-speed washing. Of course for Wards, that could mean one speed for tumble and one speed for spin. Two spray rinses, that was unique. I don't know how they could claim 25% better cleaning than most automatics. I was only in a Wards once, in Florida in 1960 and the laundry appliances were as foreign as could be. My parents were buying me a fishing rod and spinning reel for my birthday so dad and I could so some surf fishing, but would not let me go into the appliance department which would have been a really great birthday event. I really missed something important in my appliance education by not having Wards stores in our area.