Bessler and his Wheel

The following biography has been thoroughly researched by the author (Volker Keller), but does not claim to be complete or accurate. It merely has the purpose of bringing the figure Johann Bessler closer to the reader and thereby create the reality that it needs to mentally engage with his gravitational wheel. The greater the number of people who do so, the higher the probability that the principle of operation of the Bessler wheel will be re-discovered one day. In this context, care has been taken to limit the biography to such facts and events which have to do with Bessler's wheel in any way. Everything else was deliberately omitted. 
After the biography and the historical reports, my own (Volker Keller) ideas and reviews follow.