"since the machine in question would not involve (HEAT) in any form to opperate then could you tell me which law of thermodynamics it would violate."
In case you haven't known, paul, the laws of thermodynamics do not involve only HEAT.
The term "perpetual system" means, VERY simply put, "a system that is self-sustainable in its operation and that creates no interaction with other systems" - thus meaning no input and no output.
That means that even if it were to operate in perpetual way, you couldn't get the energy OUT of it.
If it is based on gravity, it means it has an input. Without that, does it still work? If not, it is not a perpetual source of energy.
Such "perpetual" sources of energy that use gravity as its main law have been around for ages (well, maybe not ages, but for quite a while). They're called "tidal generators". Though they're not very fancy, wothout many colored leds and without a polished alluminium case to catch the eye of the naive.
