Johann Bessler the Showman.

When Johann Bessler discovered the secret of free, clean and simple energy generation, he didn’t concern himself with the ‘expert’s opinion that what he was claiming was impossible.  He knew instinctively if he could work out the correct arrangement of weights his wheel would spin.  He understood that the energy which made his wheels turn came from the weights, and they were made to fall and create an out of balance wheel by the action of gravity on them.  There was nothing magical about it, it was the natural heaviness of all things which had mass.  The heavier a weight was the more potential energy it had. 

When he found the right arrangement, the wheel began to rotate.  He had to stop it by force, which means that if he released it, it would begin to spin again, therefore it must have been permanently out of balance. Obviously to conserve the machine he fitted a brake so that it would not wear out its parts when not required to move.

It is not logical to suggest that he stopped it in a certain position so that it would begin to spin as soon as the brake was released.  There was no such position available, otherwise the wheel could not even begin to spin continuously and without permanent imbalance there would portions of each rotation which would present as slowing down and then speeding back up.  More than one witness remarked on the extremely steady and even rotation of the wheel.

We know that the wheel could be slowed down under load.  Early witnesses to the first wheel at Gera, were allowed to adjust the speed by means of a bolt which could be screwed in or out as desired, to apply a braking pressure.  We also know that the largest wheel, at Kassel, turned at 26 rpm, whenturning freely, but slowed to 20 rpm when lifting the box of bricks.  Again this is logical and not a negative factor, all machines tend to slow when under load.

I note that there are a few negative opinions expressed here about the potential of Bessler’s wheel.   No one can possibly know at this stage what potential there may be in this device, nor what other uses it may be adapted to.  We judge the potential power of Bessler’s wheel by the tests demonstrated over 300 years ago, but we cannot make accurate assumptions based on so little information.  Wolff suggested that the four times pulleys visible at the Merseburg test were needed to lift the box of stones, but we don’t know if that was necessary for the lift, or merely to slow it down for the witnesses.

That is just one example of the dangers of trying to assess the wheel’s potential from limited evidence.  That wheel turned at almost twice the speed of the Kassel wheel, although it was the same size but only just under a foot thick...why?  Did Bessler deliberately design it to turn slower?

The Merseburg wheel had an axle of just under six inches (5.6inches) and it turned at around 40 rpm although some reports indicated a speed of 50 rpm, perhaps when unloaded. A 5.6 inch axle has a circumference of 17.58 inches, so for a rope wrapped around the wheel it would travel 17.58 inches for each turn of the wheel.  40 turns would lift a weight more than 58 feet in one minute,  to the top of the Schloss Merseburg.

When Wolff visited Merseburg he commented on the pulley system and included it in his report,  suggesting that this might indicate that the wheel was not very powerful.  But there are a couple of  things to bear in mind about this report.

Firstly Wolff was on the brink of accepting an offer of a very senior position with the Czar of Russia, Peter the Great, and we know that the Czar was planning to buy Bessler’s wheel, and Wolff stated that he could improve the performance of the wheel if he were allowed to have access to it in his new position. So take his apparent dismissal of the wheel's power with a large pinch of salt.

Secondly, Bessler was the consummate showman and having noted Wolff’s comments about the pulleys he designed a wheel which moved more slowly but with the same amount of power.  I think Bessler added the pulleys at Merseburg, to slow down the lift because a one minute lift created its own problems.

For a start Bessler needed his brother down in the castle yard to load the chest of  bricks to the rope and shout when he was ready. Someone had to tell Bessler when to stop the wheel when the box reached the pulley, outside the window. Then he needed to reverse the lift back down to his brother and stop the wheel before it completely unravelled from the axle.  A second demonstration immediately could be arranged and repeated as often as wished, but how much better if he slowed the lift down fourfold. More time for each lift, more time for the witnesses to study the wheel in action, and fewer demonstrations necessary to show its lifting power without any loss in performance.

Also with  all the witnesses crowded into the machine room, watching Bessler, and peering out the windows to see the load going up and down, it must have been difficult to satisfy everyone present. No wonder he decided to make the wheel at Kassel turn more slowly. He did state that he could make wheels with different speeds and lifting capabilities and of various sizes.

One more thing; we note that the chest held about 70 lbs of stones.  Have you ever lifted 70lbs? The average hold luggage on an aircraft is about 50lbs, so 70lbs is probably more than sufficient to make the point.

JC