Stubblefield coils (bifilar) and speculations

[jeanna]

@ Jeanna:

I may have to dig my coil up and try to plant it deeper this time.  It is only in the ground a little more than halfway, which might really be affecting it in ways I don't understand.
Bill

Maybe. I really think he talked about true burial for the sake of the patent officers who were familiar with batteries in jars and in the ground, but couldn't understand what he was doing with frequency.

I noticed something in the patent yesterday.

I have been making a test series to see if the gauge of the cu and fe must be the same. I was thinking I could learn something about this coil by making 3 small ones.
1- both wires thick and equal as before 1/4 in x 6 in bolt wrapped with cotton, etc
2- one same as above but, with a thin cu wire
3- one same as above but, with a thin fe wire.

I was reading what the internet had to say about NS again and I happened to notice that the thickness of the cu including the wrapping is the same as the thickness of the fe wire. So, I may be on to something, here. (Maybe everyone already noticed that and I am the last to see it.)

Then I realized that all the cu was in perfect alignment with cu and fe with the fe. So, they would be like pancake wound coils looking like discs except that they are also attached in a spiral fashion  by the wire to the next disc  and at the same time interrupted by the pancake disc of the other metal. (hard to describe)

I bet this is important. I think I may have hit on it with the one that broke.  Now, perhaps is the time to open that one up. or not. I will be sure to make the one with even wires like pancakes.

Possibly Sid and Joe did this. maybe it is the natural thing if you use a lathe or like a lathe with strong spool ends to wind this, maybe that is how it winds automatically.

jeanna

[Pirate88179]

@ Jeanna:

Both the wires on my coils are the same diameter, well, the copper is .003" larger but for all practical purposes, the same.  I am not sure what you mean by the pancake winding.  My wires are all symmetrically aligned with each other and fit the same way up and down the coil as they are wound.  I wound both the wires at the same time which is the only way I could figure out how to do it.  Yes, it was by hand which sucks!!!  My next one will be done with a machine of some type, drill, motor shaft, something.  I pulled my coil up from the ground, and am now looking for a pipe of the proper diameter to drive into the ground deeper to make the hole deeper for my coil.  I drive in the pipe or rod and pull it out and drop the coil in.  Problem is, my coil is now pretty fat with the added cotton outside layer so I need a larger ramrod.

Bill

[Localjoe]

@jeanna good call ...

I realized that a while back when i started screaming tesla.. its a bunch of his original bifilar coils wound in a solonoid fashion.. very novel design mr Stubblefield had here .. look a the pic from the tesla patent taht should do it for you.
                                                                   Joe

[jeanna]

  I am not sure what you mean by the pancake winding.  My wires are all symmetrically aligned with each other and fit the same way up and down the coil as they are wound.  I wound both the wires at the same time which is the only way I could figure out how to do it.

Bill,

I just used the word pancake to bring up the image. It's as you look at the cu wire for instance but from a different dimension. When it is finished if you were to slice through it there would be a stack of cu if viewed from one way, but if you could strip away all other layers and wires you would see a pancake even though it is not wound as a pancake. It is hard to describe. It is from a different dimension of viewing.

This is probably the best way to put it:
When you get to the bottom and begin to wind it back up again is the first wire going up the same as the last wire of the previous row? That is what I noticed about the drawing yesterday.

My assumption was that the most inductance would come about if the wires alternated cu to fe on rows as well as on each row. It is not how he drew it.

The thickness thing is just my own experiment. It might show which metal is responsible for what in the effect of the coil. (just one of my left field ideas I'm getting famous for. )

jeanna

YES JOE, that is it. btw thanks for the pic. I think it helps.
I also want to acknowledge that Hans sent out that pic but I wasn't ready for it until now.

[Localjoe]

Copper wire insulated had minimal volatge and current when copper fully exposed but not touching steel wire curren increase 10x .


Try this if you have time incert two wires in a cup of water copper insulated except the little nub at the end and iron uninsulated bare .  Take readings.   Now strip the copper bare and the iron bare take readings . Make sure they dont touch through all the tests. third test take small iron bolt or zinc bolt make a spiral coil around it but not touching with the copper thick wire if possible. Take readings.  then do the same with bare copper make sure it doesent touch the iron bolt.  There is somethign to it being coiled and in close proximity of the other bimetal .
                                                                                                                                             Joe