Had one on my old Eliminator. The motor was a 70's Cadillac electric window opener, I know this because it went bad and I had to replace the motor. I don't have a pic, but I'm sure someone here probably has one.
It was in a white box labeled Jetovator, large threaded rod thats spins both ways with stop switches on both ends and a piece that moves back and forth pushing jet up and down.
