Just to say, Pic #2 in Reply #42 is a Penta-Swirl.
1) Penta-Swirl (left, white), Penta-Vane (right, gold)
2) Penta-Vane
3) Dual-Action introduction
It's interesting that Sears had to disparage the Penta-Swirl when introducing the Dual-Action in 1976.
"Penta-Swirl agitator: an average of 1 rollover in a 14-minute cycle with large-capacity test* loads"
*Test load included: 3 sheets, 2 tablecloths, 4 shirts, 6 bath towels, 4 "T" shirts, 4 pillow cases, 6 shorts, 6 wash cloths, 5 handkerchiefs
That's kind of an oddball LK IMO with 4 fixed water levels instead of variable. The illustration has the water level and temperature captions crossed-up.
