You are talking about an anti- gravity machine, yes? Terance McKenna supposedly had plans for one but died before he could build it.
Later this month, NASA researchers hope to conduct an experiment that could determine if the force of gravity might someday be adjusted, like the volume of a radio. The space agency says that turning down the gravity in the immediate vicinity of a rocket would enable future spacecraft to roam the galaxy by using the tug of distant planets and stars.
NASA Antigravity machine