Won't have time today to get fully into it, but will start the ball rolling .. I will keep it brief as I can, as I have previously given greater detail ..
Before explaining my deductions about MT15 I have to set the scene in proper context ..
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Bessler was a complex and educated man - he had an active interest in formal and informal organizations and societies such as the Rosicrucians ( Free Masons ) - as such, evidentially, he used and dabbled in codes, ciphers, and sacred geometry etc .. he was also a highly religious man, being a practicing Christian .. this 'framework' influenced and ran thru his veins into everyday life, and the choices he made on a daily basis - part of his moral code and philosophy was the basic tenet of honesty ..
Profiling him on his background and influences it is imo highly unlikely that B. would accidentally or unintentionally give anything away about his mechanical weight lifting method ( gaining GPE to cause sustainable overbalance ) in his published books and pamphlets ( e.g. GB, AP, DT ) .. however, we have two other valuable sources of information to closely consider - one, is the witness statements/letters, and the second is his unpublished private folio of machines we call MT ( re. John Collins MT ) - we already know from his hand written frontispiece in MT that he removed certain drawings and replaced them with others after his arrest, and that he tells us to look for movement and a motion; but he is not going to spoon-feed us his mechanical answer to his runners ( these pages were removed ) - we will have to deduce it, and back-engineer the principles behind its operation ..
It is my belief that even in his private unpublished MT collection that B. would always be a prisoner to his background and influences and it would show up as "tells" if we looked for them - i.e. that from a psychology perspective he could no more escape "tells" than we can, like reading a poker player ( some are better at disguising there "tells" than others, but all will give them ) - and make no mistake B. was playing poker with future generations of researchers .. so I look for the "tells", some are overt and some more covert imo ..
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MT appears to be a progression of machines and mechanical concepts in his search for PM .. logically, and following convention, like most narratives, it will have a beginning introducing the characters and the plot, a fleshed out middle giving bulk and further context to the story, and a conclusion drawing the story to an end .. we know the conclusion was removed and probably replaced by the Toy's Page - amongst this setting B's. psychological and philosophical influences would come thru in some shape or form, to a greater or lesser degree, imo ..
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In MT B. starts out at MT9 telling us there is a Zusammen Gehangten ( Hang Together ) Principle - In MT10 he tells us that there is a 'correct handle-construction' - in MT11 he tells us that 2 systems can be interesting - in MT12 he tells us that the external fixed ramp causes a great deal of shaking - our own experiments tell us that external fixed ramps are a dead-end because they share the weight of the lever-weights ( i.e. contact force at right angles to the ramp ) etc causing an increased back-torque which 'quickly' kills-it-deader-than-a-dodo ..
... BUT ... in MT13 some interesting things begin to happen imo ..
First off - the CCW wheel consists of lever-weights ( lw ) and an axle mounted hanging Counter-Weight ( e.g. Artificial Horizon [AH] ) - at the top of the AH is a small wheel that depresses the lw as it runs over it, theoretically causing the lw to rise upwards its end weight to give it GPE, and subsequent torque - B. points out that there is much friction, and it would run well if someone were there to continually lift the lws at the top of the wheel as it rotated - he unexpectedly enhances the narrative further by saying that they should lift the lws "like lightening" i.e. very fast .. our own experiments and experience tells us that a heavy hanging AH like shown is nothing more than a "fixed external ramp' analogue ( like MT12 ), with the exact same failings of producing much show-stopping back-torque which quickly slows and stops the wheel ..
So what is so important about MT13 imo ?
It is his "tells" starting to come thru imo - I think of it as "The 12 Disciples + The Prime Mover" ( 12 disciples, and jesus, at the last supper ) - however, because this is near the beginning of the collection it is not to be taken as gospel/literal mechanisms - simply showing that weights ( lws ) need to be lifted fast to give them GPE and subsequent wheel torque, and that the Prime Mover ( for his first working 'private' PM runner prototype in 1712 imo ) was likely a pendulum arrangement ( & dual pendulums in the DT engravings ) able to swing back and forward which interacted ( positive feed-back ) with the secondary weight shifting system to lift the lws fast and give them GPE etc etc to self-sustain its rotation - obviously from the woodcut there are 12 lws and 1 AH .. n.b. his later public wheels changed out the external pendulum Prime Mover for an internal "all-must-go-around-togther" MOI changer Prime Mover which I'll discuss at a later date ..
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Then before MT15 we have MT14 which share similar mechanics - time is moving on so will post the pics I've redone for you to look more closely at and follow - you can see that the hanging lws are lifted at the top-of-wheel and these pull up weighted cross-tensioners to reinforce the supposed overbalancing - there are some mistakes in this woodcut - there are 23 lws when there should be 24, the cross-tensioners attach every second lw but he gets it wrong .. however this is the basis for the MT15 mechanics which I'll get to when I next can ..
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