It is just a large rotary spark gap.
Here is a small write up of it.
The multistributor consists of a motor-driven, whirling electrode
with five points. At great speed these points pass another electrode
with a set of seven points. As each point of one electrode passes a
point of the other, a 20,000-volt spark occurs. These sparks form
featherlike flashes between the two rings. The inner electrode spins
at a speed of about 1000 revolutions per minute.
At 01:24 PM 10/07/2018, you wrote:
Sorry, I know this is way off topic; however, does anyone know of the
mechanical design of the subject spark wheel?
I have just finished the 24" diameter outer metal with 7 stationary
electrodes on the ID. I have a lot of ideas and parts, but would rather not
have to make multiple rebuilds to get it right.
Thank you for your patience.
Tim
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