Jacob S wrote:
Daniel McFarland Cook's work is focused on quit heavily within the VTA community. You might check out that line of research, if you want to learn more.
Here is the essence part :
"The mode of producing or starting the action in the helices consists in the use of a steel or electromagnet, or a helix, around one of the helices, and causing a secondary current in the enclosed helix by means of a battery current in the outer one; the action then in either the simple or compound helices increases in quantity to the maximum capacity of the wires to conduct with the existing tension of the current. If, now, the circuit is broken the current instantly ceases, and can only be restored by the same means that it was first produced; hence to allow the use of the main circuit for common purposes I introduce a rheostat or resistance of any kind into the circuit, so that a small portion of the current only will flow along the resistance, by which means the action in the helices is feebly maintained when the main circuit is broken, and instantly restored when it is closed to its full force. By this means the action becomes in effect the same as the common battery currents, and may be used for similar purposes. For the purpose of preventing the heating of the helices caused by the intensity of the action, and to prevent circulation of the initial secondary currents in the main circuit, a rheostat of any convenient form may be made to constitute a part of the main circuit D. The alternate changes of the iron cores or magnets may be used for producing electro-magnetic motion, or motion to a wheel of any suitable device."
Evidently there are two rheostats in D circuit.One is used to prevent initial secondary currents to exists in main circuit. That would probably dampened the effect of accumulation of power.Second one is placed maybe in parallel to the load.
The only thing I could imagine is to have second rheostat in parallel to part of wire of one of the coil of circuit . Normally such rheostat is not used because resistance of wire is much lower and all currents pass through wire,but here is a trick.... I think McFarland main circuit might be using an automated switch so the output is pulsed DC.He even mentioned that :
" by which means the action in the helices is feebly maintained when the main circuit is broken, and instantly restored when it is closed to its full
force."
I know ONE person who replicated successfully this patent in the past .... and I bet you know that man too