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Solid States Devices => Tesla Technologgy => Topic started by: Jeg on March 27, 2014, 02:40:36 PM

Title: Searching for a Tesla Patent
Post by: Jeg on March 27, 2014, 02:40:36 PM
Hey guys
Does anybody know in which patent of Tesla the following drawing refers to?

Tnks
Jeg
Title: Re: Searching for a Tesla Patent
Post by: jbignes5 on March 27, 2014, 02:52:33 PM
Hey guys
Does anybody know in which patent of Tesla the following drawing refers to?

Tnks
Jeg


 I don't believe this is a Tesla patent. It was referenced in Don Smiths Talks about Tesla like Technology at this link: http://www.free-energy-info.com/Utkin.htm


 Obviously it was modified by the author of that site or by Don Smith.
Title: Re: Searching for a Tesla Patent
Post by: bbem on March 27, 2014, 02:56:29 PM

http://www.tuks.nl/wiki/index.php/Main/TeslaRareNotesOnWardenclyffe (http://www.tuks.nl/wiki/index.php/Main/TeslaRareNotesOnWardenclyffe)
Title: Re: Searching for a Tesla Patent
Post by: Jeg on March 27, 2014, 03:39:20 PM
Awesome :)
Thanks guys
Title: Re: Searching for a Tesla Patent
Post by: Shanti on May 30, 2014, 05:18:11 PM
I also once thought these notes are kinda interesting, as they shed some new light upon the whole system.

I also like Beaty's try for a possible explanation: http://amasci.com/tesla/wardenclyffe.html (http://amasci.com/tesla/wardenclyffe.html)

But I do definitely not agree with some points of his theory. But still interesting.

Title: Re: Searching for a Tesla Patent
Post by: Farmhand on May 30, 2014, 06:45:00 PM
That drawing has additions from other Tesla sources the circuits to the left are added. And one drawing is definitely from a book called "The Inventions Researchings and writings of Nikola Tesla" I think it is called the words may be around the wrong way.
The bottom left circuit is a circuit he used to demonstrate a static machine like discharge. I suggest that the guy is a bit off track.

The main apparatus on the right is one of a few arrangements proposed towards the end of the Colorado Springs Notes.

It's a big download but it's cheaper than the book, however the book has content the PDF does not have. I was donated the book by a very kind friend who knew my interest in his discoveries, many of Tesla's achievements were discoveries and many were inventions to verify and utilize his discoveries.

The set up in question I think is an arrangement which produces a plasma bridge most likely for the modulation of signals/intelligence/voice/information, not power transmission. Tesla touches on the subject of modulating the output so as to transmit voice near the beginning.

Colorado Springs Notes download link. (other sources may be available), I used Scribe and shared other documents..
http://www.scribd.com/doc/337910/Nikola-Tesla-Colorado-Springs-Notes

..
Title: Re: Searching for a Tesla Patent
Post by: Shanti on May 30, 2014, 10:22:04 PM
In this context:
I actually always wondered how Tesla would have wanted to modulate several different information streams onto his magnifying transmitter. I know his normal solutions, e.g. as an example with a direct conversion of speech into the modulation.

But as I understood the magnifying system, it needed to be in resonance with the earth. So a frequency modulation or using various different frequencies wouldn't have been a possibility, well maybe except for overtones.
It additionally seems strange to me, how he still wanted to be in resonance with the earth at such high frequencies and still have a good conduction.
As you also seem to have yourself occupied a lot with Tesla, I would be interested in your opinion.

Title: Re: Searching for a Tesla Patent
Post by: Farmhand on May 31, 2014, 05:27:33 AM
Well I'm an amateur and I really do not know what Tesla's actual intentions were. But in my opinion the power transmission would be at a low frequency being an odd multiple of the Earths frequency so that an odd number of 1/4 wave lengths would fit across the Earth.  Then the signals could simply be carried by that lower frequency, just like internet over power line tech.

In my opinion he intended to use lower frequencies for power transmission. Remember Wardencliff was to be the prototype, it was likely he had several different idea's for achieving each thing he wanted to do.

In the Colorado Springs notes Tesla says that for the transmission of power (where large quantities of energy are to be transferred) to get the high voltage required a high rate of transformation would be way better than using resonant rise. A system using resonant rise to attain high voltages would be ok for the transmission of signals, I think it is because for signals the rate of energy use is small and the rise could be maintained. Whereas when a large power draw is put on the transmitter resonant rise would be retarded so the voltages would drop to transformation tension, hence the high rate of transformation would be the logical choice.

I have quoted the text several times in different threads about that point Tesla made about the high rate of transformation but the PDF is on my desktop PC which has a failed motherboard, another job to do. grrrrr.

The text is towards the beginning, but I don't recall exactly where I need to find it in the book. And photograph it.

..
Title: Re: Searching for a Tesla Patent
Post by: Farmhand on May 31, 2014, 06:11:52 AM
Here's the Text. Maybe the OP's image device on the right was one of Tesla's idea's to get a lower frequency.

We should also remember that for such a massive transformer as the one proposed at Wardencliff a high frequency would only be in the tens of kHz. It's a relative term in context I think.

Title: Re: Searching for a Tesla Patent
Post by: Shanti on May 31, 2014, 09:23:23 AM
Thanks for pointing that out again!!!

As I mentioned, it is now a few years ago, since I studied all these Tesla articles, so please pardon me, if I don't remember anymore all the details.

A few thoughts from my side:

In these "rare notes" Tesla describes partly this strange top spark-gap system. As it seems he really intended to have a second "free" oscillator top driven by the first oscillator. And he wanted to make all in one big tower.
As it seems he miscalculated the needed height for this tower.
The reality would be, that the tower would then have had to be extremely high.

But even with the numbers he got, he obviously got to the conclusion, that he cannot build the tower that high and that he rather would have to build two towers.

But why this "free" oscillator?

I could imagine the following: In this system, you want to have maximum energy oscillating with as few losses as possible to be able to transmit power through the earth.
What would your ideal resonator look like?

It would have as few resistance as possible (wire thick and as short as possible). As it needs as much energy oscillating as possible, the top capacitor has to be big.
The inductance should have no distributed capacity and absolutely no inductive coupling to any other circuit.
So the best solution would just be make a straight wire upwards with a big capacitor on top.
That's obviously what he intended to have in this "free" oscillator.

So why not make a "charging" (Tesla's term) oscillator which is not ideal and still has quite some losses, which then top feeds the "free" oscillator, which has almost no losses.
The "free" oscillator has no secondary, so no energy can get coupled out again.
The coupling is just from capacity to capacity. But if one top load is much smaller than the other, which is obviously the case in this setup, then for the same voltage on the top load, the "free" oscillator has much much more energy in it. Therefore there will never be the problem of the "free" oscillator discharging into the "charging" oscillator.

Like that you can make a charging circuit with quite a high coupling, as it is good for transmission of energy (like you pointed out) and still have an actual resonator which has almost no losses.

He intended to have the "free" oscillator on a Lamda/4 wave and the charging circuit on a 3/4 Lamda Wave. This also makes perfect sense, as you want to have them phase correct.

But what puzzles me: He still calculated and aimed a frequency of 100Khz for this oscillator. Why so high? I have serious doubts that this earth resonance system still works good with such a high frequency. But what do I know???

Funny is also his calculations about the ground potential rise, due to his oscillator having  10MV at the top load.
He calculated about 10Volts.
BTW: Here he again miscalculated. It seems, this happened quite often to him. I wonder how much miscalculations were in the CSN. As in the book I have, it is just said "all original calculation errors have been corrected".
Anyway: Back to the ground potential rise. He just calculated the earth as a pure capacity. the problem: The earth is huge. It takes time for the charge to distribute. That's why you get the standing waves.
So the local ground potential rise should IMHO be much higher than predicted.
Edit2:
Actually as Mark pointed out, the rise should IMHO be rather based on the impedance to the earth connection. Or what do you think?


Maybe he then dropped back to the original system, like in CS, mainly to transmit signals, as the power transmission system would just have been too expensive???
Or maybe he planned to have a CS like transformer in his brick building top feeding the big tower. There's at least some long central protruding, which could allow this speculation. Or maybe he just let the building be made like that, that he would later at least have the possibility to try something like this.

Edit:

BTW: It is IMHO also interesting that one pic shows that he also had the idea to at least use rough coils with big dia wire and big winding distances, instead of a straight "Wire" for the "free" oscillator. It surely would be a degrading of performance, OTOH one could make the tower much smaller like that. It is interesting that he intended to have several coils for that.
IMHO it is also obvious why: You can arrange the coils in a way (one CW, other CCW) that they will cancel out each others field in the middle of them, where the "charging" oscillator is. Like that you can decouple your "free" oscillator. With the straight wire, this wouldn't have been needed, as the m-fields would be perpendicular to each other.

Edit3: I mean this pic: http://www.tuks.nl/wiki/uploads/Main/Rare_Tesla_Notes_fig6.jpg (http://www.tuks.nl/wiki/uploads/Main/Rare_Tesla_Notes_fig6.jpg)
Lol I just realized, that you can actually see in this pic illustrated that some coils are CW, others CCW, as I supposed.
Title: Re: Searching for a Tesla Patent
Post by: MarkE on May 31, 2014, 09:24:31 AM
Well I'm an amateur and I really do not know what Tesla's actual intentions were. But in my opinion the power transmission would be at a low frequency being an odd multiple of the Earths frequency so that an odd number of 1/4 wave lengths would fit across the Earth.  Then the signals could simply be carried by that lower frequency, just like internet over power line tech.

In my opinion he intended to use lower frequencies for power transmission. Remember Wardencliff was to be the prototype, it was likely he had several different idea's for achieving each thing he wanted to do.

In the Colorado Springs notes Tesla says that for the transmission of power (where large quantities of energy are to be transferred) to get the high voltage required a high rate of transformation would be way better than using resonant rise. A system using resonant rise to attain high voltages would be ok for the transmission of signals, I think it is because for signals the rate of energy use is small and the rise could be maintained. Whereas when a large power draw is put on the transmitter resonant rise would be retarded so the voltages would drop to transformation tension, hence the high rate of transformation would be the logical choice.

I have quoted the text several times in different threads about that point Tesla made about the high rate of transformation but the PDF is on my desktop PC which has a failed motherboard, another job to do. grrrrr.

The text is towards the beginning, but I don't recall exactly where I need to find it in the book. And photograph it.

..
The passage that you posted shows that Tesla understood that for purposes of power transmission he was limited by series impedance.    Series impedance sets current dependent loss.  If you've got a situation with some impedance Z, then in order to scale power at some fixed percentage loss, then you have to scale voltage by at least the square root of the power.  Say you had a DC system sending 10V through transmission of 1 Ohm.  You could deliver 9V @ 1A to the loads, 9W, 90% of your input.  If you wanted to scale the delivered power up to 90W at 90% then you can afford to lose 10W in the 1 Ohm transmission system: 3.16A.  You can get there by scaling the source voltage up by 3.16 X (100.5) to 31.6V.
Title: Re: Searching for a Tesla Patent
Post by: Shanti on May 31, 2014, 05:09:24 PM
IIRC Tesla mentioned in the CSN somewhere that introducing a capacitor in the ground connection actually improved the circuit. But he didn't explain why.
Could it be that it worked like a kind of impedance matching?
Actually although I work professionally with digital circuits, I don't have that much knowledge of the analog part. Only what has been left in my brain from university times...
To my shame I have to say, my diploma thesis was building a radar circuit. But there's not much left of this knowledge anymore...LOL...

Title: Re: Searching for a Tesla Patent
Post by: Shanti on June 04, 2014, 04:08:48 PM
Doesn't seem to interest anyone... LOL  ;D

But maybe later someone would like to give his opinion...

As it seems, Tesla really first planned to do the Wardenclyffe tower like the pic in the first post on the right, meaning with a separate free oscillator which has as coil just straight metal columns to the earth.

But wouldn't that be just an almost perfect monopole antenna for EM waves?

As in his usual design, with quite a coil, this is less of a problem as the tower is then much smaller than the wave itself, so the emission should be fairly small. But with a tower as high, it should IMHO be quite a good EM emitter.

Tesla himself stated, his tower should emit by EM waves as small as possible, as you want to resonate with the earth and not dissipate the power into the air.
This is why it seems very strange to me, that he obviously planned first to make the tower like that...
Sure the knowledge about antennas was almost nonexistent at that time. So maybe Tesla wasn't aware that this would be a bad approach?
As it seems from the CSN, he never tested this design before...

Would be interested in other opinions...


Title: Re: Searching for a Tesla Patent
Post by: Farmhand on June 04, 2014, 06:48:04 PM
I'm sure Tesla was thinking along the lines of transmission efficiency when talking of minimizing the radiated "Hertz" waves as he
said. He does also mention that he discovered that he could in fact use a good percentage of that "radiated" energy as well, he
mentions that in his "Work on Alternating Currents".

Maybe his tower might have been a lot more efficient than the way they say they are doing it now, maybe not, maybe he
miscalculated or failed to consider something. But is that the only way they do it now ?

I see near the beginning of the Colorado Springs Notes that he shows some dual resonator setups, with the coils having different
frequencies he could get "beats", which of course is common knowledge now. I often wonder could a set of coils use a "beat"
frequency of say to tap into the lower frequency transmissions of these large transmitters,
sounds like a lot of Juice at Harold Holt Station,  ;D
Quote
The frequency is 19.8 kHz. With a transmission power of 1 megawatt, it is the
most powerful transmission station in the Southern Hemisphere

Here's a couple of Wiki's to consider. See in the "See Also" sections of the Wiki below the articles. Interesting stuff.

Communication with submarines
http://en.wikipedia.org/wiki/Communication_with_submarines

Quote
Extremely low frequency[edit]

1982 aerial view of the Clam Lake, Wisconsin ELF facility.
Electromagnetic waves in the ELF frequency range (3–300 Hz) (see also SLF) can penetrate seawater to depths of hundreds of meters, allowing communication with submarines at their operating depths. Building an ELF transmitter is a formidable challenge, as they have to work at incredibly long wavelengths: The US Navy's system, Seafarer, which was a variant of a larger system proposed under the codename Project Sanguine,[1] operated at 76 hertz,[2] the Soviet/Russian system (called ZEVS) at 82 hertz.[3] The latter corresponds to a wavelength of 3,658.5 kilometers. That is more than a quarter of the Earth's diameter. Obviously, the usual half-wavelength dipole antenna cannot be constructed, as it would spread across a large country.

Instead, one has to find an area with very low ground conductivity (a requirement opposite to usual radio transmitter sites), bury two huge electrodes in the ground at different sites, and then feed lines to them from a station in the middle, in the form of wires on poles. Although other separations are possible, 60 kilometers is the distance used by the ZEVS transmitter located near Murmansk. As the ground conductivity is poor, the current between the electrodes will penetrate deep into the Earth, essentially using a large part of the globe as an antenna. The antenna length in Republic, Michigan was approximately 52 kilometers (32 mi). The antenna is very inefficient. To drive it, a dedicated power plant seems to be required, although the power emitted as radiation is only a few watts. Its transmission can be received virtually anywhere. A station in Antarctica at 78°S 167°W detected transmission when the Soviet Navy put their ZEVS antenna into operation.[3]

Due to the technical difficulty of building an ELF transmitter, the US and Russia are the only nations known to have constructed ELF communication facilities, with India being in the process of constructing one. Until it was dismantled in late September 2004, the American Seafarer, later called Project ELF system (76 Hz) consisted of two antennas, located at Clam Lake, Wisconsin (since 1977) and at Republic, Michigan in the Upper Peninsula (since 1980). The Russian antenna (ZEVS, 82 Hz) is installed at the Kola Peninsula near Murmansk. It was noticed in the West in the early 1990s. The British Royal Navy once considered building their own transmitter at Glengarry Forest, Scotland, but the project was canceled.The Indian Navy is in the process of constructing ELF communication facility to communicate with its Arihant class and Akula class submarines. This facility is expected to be operational by 2015.

.....

Naval Communication Station Harold E. Holt
http://en.wikipedia.org/wiki/Naval_Communication_Station_Harold_E._Holt

......
Title: Re: Searching for a Tesla Patent
Post by: thx1138 on June 14, 2014, 01:57:48 PM
 Let me first say I know next to nothing about transmitting either power or signals. I don't know at this point if that is good or bad. It might be good since I don't have to "unlearn" things.
 
Quote
[font=]I actually always wondered how Tesla would have wanted to modulate several different information streams onto his magnifying transmitter. I know his normal solutions, e.g. as an example with a direct conversion of speech into the modulation. [/font]

This might be related. It is from much earlier work than CS or Wardenclyffe but remember he used impulses rather than AC.
 
 
 
Alternate Currents of Very High Frequency and Their Applications to Methods of Artificial Illumination, Lecture at American Institute of Electrical Engineers at Columbia College, May 20, 1891
 
"When the terminals of a high tension induction coil are connected to a capacitor, and the capacitor is disruptively discharging into a circuit, we may look upon the arc playing between the spark gap as being a source of alternating, or generally speaking, undulating currents, and then we have to deal with the familiar system of a generator of such currents, a circuit connected to it, and a condenser bridging the circuit. The capacitor in such case is a veritable transformer, and since the frequency is excessive, almost any ratio in the strength of the currents in both branches may be obtained. In reality the analogy is not quite complete, for in the disruptive discharge we have most generally a fundamental instantaneous variation of comparatively low frequency, and a superimposed harmonic vibration, and the laws governing the flow of currents are not the same for both."
 
 
Quote
In these "rare notes" Tesla describes partly this strange top spark-gap system. As it seems he really intended to have a second "free" oscillator top driven by the first oscillator. And he wanted to make all in one big tower.
 
As it seems he miscalculated the needed height for this tower.
 
The reality would be, that the tower would then have had to be extremely high.

He originally planned a much higher tower but, not being able to raise the capital needed for its construction, he scaled it back. IMO, that re-scaling was much of the reason for the construction delays and ultimately the Wardenclyffe project failure. Had the delays not occurred due to resizing, Marconi may not have beat him to the intercontinental transmission and he would have had the full backing of J. P. Morgan.
 
 
Quote
It would have as few resistance as possible (wire thick and as short as possible). As it needs as much energy oscillating as possible, the top capacitor has to be big.
 
The inductance should have no distributed capacity and absolutely no inductive coupling to any other circuit.
 
So the best solution would just be make a straight wire upwards with a big capacitor on top.

Not knowing anything about transmission, this has always puzzled me. I think it fits into your discussion here but I don't know the implications. In the quote below coil B is the secondary and D1 is the drum inside coil B.
 
U.S. Patent 1,119,732 applied for January 18, 1902 (Wardenclyffe)
 "The coil B is wound on a frame or drum D1 of insulating material, with its turns close together. I have discovered that when so wound the effect of the small radius of curvature of the wire itself is overcome and the coil behaves as a conductor of large radius of curvature, corresponding to that of the drum."
http://www.teslauniverse.com/nikola-tesla-patents-1,119,732-transmitting-electrical-energy?pq=MSwxMTksNzMy (http://www.teslauniverse.com/nikola-tesla-patents-1,119,732-transmitting-electrical-energy?pq=MSwxMTksNzMy)
 
That seems to be your "( wire thick and as short as possible)". Look at  the drawing at that link and read the above paragraph again.
 
 
You should also look at Canadian patent 142,352 applied for April 17, 1906 - Art Of Transmitting Electrical Energy Through Natural Mediums and note the difference in dates. I think the U.S. patent was filed to protect the idea without revealing much information and the later patent was filed to protect the ideas when it was apparent the Wardenclyffe project would not be completed. There is quite a bit more information in the Canadian patent. I suppose it was filed in Canada to make it somewhat more obscure because in that day the documents would have to be examined in person and Tesla was so active in the U.S. I'm not sure people would go to Canada to look for it.
 http://en.wikisource.org/wiki/Canadian_patent_142352 (http://en.wikisource.org/wiki/Canadian_patent_142352)
 
[font=]In those patents he also references patents for individualization of transmissions. Related patents.[/font]
[font=]http://www.teslauniverse.com/nikola-tesla-patents-685,953-intensifying-transmitted-effects?pq=Njg1LDk1Mw==[/font]
[font=]and [/font]
[font=]http://www.teslauniverse.com/nikola-tesla-patents-685,955-utilizing-transmitted-effects?pq=Njg1LDk1NQ==[/font]
[font=][/font]
[font=]It would probably be beneficial to go back and read those patents thoroughly with the understanding you now have. On review, a lot becomes clear. Also look at the CS notes on July 4, 1899. [/font]
[font=][/font]
[font=]I tried the "Remove Formatting" button but couldn't get rid of the font tags.[/font]
Title: Re: Searching for a Tesla Patent
Post by: Shanti on June 14, 2014, 05:16:26 PM
@Farmhand:
Very interesting!
Lol, but really looks like it is very inefficient.
I'm just wondering if Tesla's way of "sender" would be more efficient. OTOH I would think that the army would at least have tested Tesla's idea, as with modern equipment that would not be very costly (for a military budget)
It's the same with Tesla's Death-Ray/Peace-Ray/Teleforce/...
I just cannot imagine, that the army did not test if this setup is viable or not. But I have never heard of any test in this relation...
Sure they did experiment with particle beams, but they usually used a very different setup. I think this is strange, as Tesla's setup seems very easy to implement. I would at least have tested it...

This might be related. It is from much earlier work than CS or Wardenclyffe but remember he used impulses rather than AC.
 

I personally rather do not think so. He already had patents for transmissions with several oscillators of different frequencies overlayed and even modulated.
I actually think it is quite impressive to do such things, with the stuff available at that time. I would never have been able to do that...
But here is still see the problem how to modulate it on the main free oscillator, as there an enormous energy is oscillating.
But probably this could have been done, although I wouldn't know how exactly...

The free oscillator surely had quite some harmonics on it. AFAIR Tesla himself states that in the CSN. But this is actually quite logical.

Quote
He originally planned a much higher tower but, not being able to raise the capital needed for its construction, he scaled it back. IMO, that re-scaling was much of the reason for the construction delays and ultimately the Wardenclyffe project failure. Had the delays not occurred due to resizing, Marconi may not have beat him to the intercontinental transmission and he would have had the full backing of J. P. Morgan.


The funny thing is according to the "rare notes" it seems he planned to fall back on a two or even three tower design. I'm still wondering if he planned to set up a CS like transfomer in the brick building for feeding the tower top, although I cannot really imagine that, from the distance of the two...
 
Quote

U.S. Patent 1,119,732 applied for January 18, 1902 (Wardenclyffe)
 "The coil B is wound on a frame or drum D1 of insulating material, with its turns close together. I have discovered that when so wound the effect of the small radius of curvature of the wire itself is overcome and the coil behaves as a conductor of large radius of curvature, corresponding to that of the drum."
http://www.teslauniverse.com/nikola-tesla-patents-1,119,732-transmitting-electrical-energy?pq=MSwxMTksNzMy (http://www.teslauniverse.com/nikola-tesla-patents-1,119,732-transmitting-electrical-energy?pq=MSwxMTksNzMy)
 
That seems to be your "( wire thick and as short as possible)". Look at  the drawing at that link and read the above paragraph again.

 
I would rather think he meant it in relation to the electric field. If you have such high voltages, on such a small diameter wire, you would get immediately a corona discharge to air. But if you wind the wires close enough together, they will behave in relation to the electric field, like the field of one big drum at that voltage. So you do not get anymore corona discharges from the wire.

Quote
You should also look at Canadian patent 142,352 applied for April 17, 1906 - Art Of Transmitting Electrical Energy Through Natural Mediums and note the difference in dates. I think the U.S. patent was filed to protect the idea without revealing much information and the later patent was filed to protect the ideas when it was apparent the Wardenclyffe project would not be completed. There is quite a bit more information in the Canadian patent. I suppose it was filed in Canada to make it somewhat more obscure because in that day the documents would have to be examined in person and Tesla was so active in the U.S. I'm not sure people would go to Canada to look for it.
 http://en.wikisource.org/wiki/Canadian_patent_142352 (http://en.wikisource.org/wiki/Canadian_patent_142352)
 
In those patents he also references patents for individualization of transmissions. Related patents.
http://www.teslauniverse.com/nikola-tesla-patents-685,953-intensifying-transmitted-effects?pq=Njg1LDk1Mw== (http://www.teslauniverse.com/nikola-tesla-patents-685,953-intensifying-transmitted-effects?pq=Njg1LDk1Mw==)
and
http://www.teslauniverse.com/nikola-tesla-patents-685,955-utilizing-transmitted-effects?pq=Njg1LDk1NQ== (http://www.teslauniverse.com/nikola-tesla-patents-685,955-utilizing-transmitted-effects?pq=Njg1LDk1NQ==)
It would probably be beneficial to go back and read those patents thoroughly with the understanding you now have. On review, a lot becomes clear. Also look at the CS notes on July 4, 1899.

Well how it should principally work, was and is already quite clear. The only questions I would have had, was just how exactly he tried to get the earth into resonance with as few losses as possible.

From the docs you linked, as also in the rare notes, it gets very clear, that he was aware, that he wanted to created standing waves on the earth.
E.g. if you draw the remaining circles in one "rare notes" pic you can clearly see, how he exactly placed the earth connections of the different sending/receiving circuits. (see attachment)

But it's interesting that in the doc you posted, he recommended frequencies < 20Khz, while in the rare notes he obviously planned a transmitter for 100KHz.