Below from the book, "Edgar Cayce - An American Prophet."
The motor was to consist of a large metal tank containing water, in which a drum containing compressed air or vapor would be suspended. Around the sides and inside the tank were metal sprockets, called "sprankles" in the readings, much like pins inserted into a cushion, or spark plugs on an engine block. A "cam shaft" running through the center of the drum would be connected to a caterpillar-type drive shaft at the top of the tank. Positively charged particles expanding in the bottom of the vapor-filled drum would contract as they rose to meet the negatively charged particles at the top, which would create a rotational force, causing the drum to spin. The action in the metal drum was compared to the rotation of the earth: once put in motion the drum would spin indefinitely until it was physically stopped. The larger the motor the more power it would produce. There would be no exhaust fumes, no dangerous emissions of any kind, and it would require no fuel beyond that required to initially put the drum into motion.
"[The] motor ... will develop power on its own action," the Source said. "The idea and the plans, as have [been] worked out [are] the better application of the created [or universal] energy."
The Stansell motor worked on the principle of alternatively changing the gravitational pull of vapor in the drum housing the motor. The 'sprangles,' or sprockets that were housed in the drum were nothing more than tuning forks that transmitted the vibrational level of the vapor in the drum and acted on the gasses trapped inside, causing them to alternately rise to the top of the drum and then sink to the bottom. This action was described as being the same kind of centrifugal force as found in nature, which theoretically would keep the drum spinning forever.
Edgar Cayce An American Prophet