I bought my mangle, a.k.a. Kenmore automatic ironer, at an estate sale this winter for $12.50. I discovered it in a dank basement, probably left over from the early 50s.
Although it came with no instructions, the operation of my mangle is self-evident. Turn on to start heat. Push kneee pedal to make the roll go around. Push other knee pedal to engage the curved heated plate.
Recently I pre-washed some fabric for a lap-sized quilt project. When I pulled the damp fabric out of the washer, I pressed it all in the mangle in five minutes. Typically the same amount of fabric would take 1.5 hours to iron by hand. I'm thrilled with my “new” household appliance.