Keely
"The working part of this device consists, first, of an outside ring carrying on its inside face nine pieces - equidistant from each other - called polar accelerators; which constitute the polar field or polar circuit. Second, another ring of less diameter, situated inside of the larger ring, and carrying on its face eight disks, with a triple grouping in each, representing the depolar field, or field of high polar interference." [See Apergy - Power Without Cost], [The Operation of the Vibratory Circuit]