The structure of the bi-directional wheel has remained unknown. After Orffyreus produced basic design of perpetual motion machine, next few logical steps led him to realize different formations using the same principles. Collins, his biographer has traced back altogether 7 devices.

Orffyreus exhibited his new bi directional wheel at his home in Green Manor by the sixth Gate Merseberg, Germany. This wheel was 11.15 feet diameter and 11.15 inches thick and rotated at 46 RPM unloaded.  This was the first of Bessler's dual-direction wheels, designed to counter criticism that his machines are somehow wound up with a spring.

               We also have enough documentary proof.  Leipzig Post Zeitungen, published for week of 24th - 30th June 1715 described the machine and demonstration as follows:

“An illness which has afflicted the famous Mr. Orffyreus has prevented him from exhibiting, at the Easter Leipzig Fair, as he wished to do, a new and larger version of the true perpetual motion machine, invented by him. It will be of interest to the public to know that the famous inventor has just informed us that he has brought to perfection a new perpetual motion machine. It was finished with God's help, just before the recent Whitsun Holiday, in his rooms in the Green Manor by the sixth Gate..

The machine is similar to the one constructed in Draschwitz a year ago, and is in the form of a wheel. However, the present machine is slightly larger, having a diameter of six Leipzig ells, (11.15 feet) and a thickness of half an ell, (11.15 inches). The axle or shaft on which the wheel is fixed averages six inches thickness and is six feet long. The continuous impulse attributed to this very useful and ingeniuos machine, is independent of any hidden power source or drive. According to the original factual description given by the "Leipzig Gazette" on the 3rd November last year, the rotation is caused, without any evidence of fraud, exclusively by its own internal power and artful design. It moves in a fast, strong and uniform rotation as long as the materials from which it is made, ie., wood, metal etc. last. A considerable force has to be applied to brake or stop the machine. Having put into motion its own mechanism, the power is sufficient to raise high or pull a load of approximately one hundred weight. To demonstrate its effectiveness, four stampers of considerable weight have now been attached. They are lifted by means of eight cams fixed to the shaft, and at each revolution they are lifted twice. Consider how much more such a perpetuum mobile could do if, in the future, a larger one was constructed and by combining several machines have its power multiplied; or it could be applied to other mathematical inventions...