Perpetual Motion or Gravity wheel?

It seems to me that recently, in many forums, Bessler's wheel is being referred to as a perpetual motion machine (PMM or PM machine) more often than it used to be. I think that this is a mistake because using such names brings with it a lot of subjective cultural and emotive colouration in addition to the explicit meaning of term. The term 'perpetual motion' is often used in a perjoritive way in referring to the subject and those who support Bessler's claims are leaving themselves open to even more ridicule than we already suffer if they continue to use the term when, in my opinion, it is inaccurate, and should be replaced by some other term which describes it more succinctly. Perpetual Motion machines are defined as ones which don't have access to any external source of energy. They are isolated systems relying on their own intrinsic energy and are wholly independent of any other object, action or consequence. Such machines violate the law of conservation of energy.

Bessler's wheel relied on gravity for its energy. Now you can argue that gravity cannot be the sole source of energy for the wheel, but without it, it would not turn. Gravity pervades our world; it permeates all matter in and on the earth and the space around us, so it is in effect both internal and external to any machine which relies on it to work. As such it is not a perpetual motion machine, and not an isolated system,and it does not therefore, break the law of conservation of energy. It is, rather, a gravity wheel, or a gravity engine in the way that a petrol engine is called that because it runs on petrol; or a gravity mill in the same way that a windmill is referred to, thus, because it is driven by the wind.

Old examples of such machines are a windmill which drives a fan which pumps air at the windmill causing it to turn. A modern example would include a battery which drives an electricity generator which charges the battery. Both impossible because they derive no extra energy from outside their own little worlds and are thus isolated systems.

Bessler's wheel did, according to the inventor, use gravity to turn it, so it was a gravity wheel, regardless of whether you think it needed an additional source of energy to complete the cycle. So I must ask those who discuss such matters to please use a term other than PM when describing Bessler's wheel or we shall never get the serious attention of the scientific community we seek.

JC