Details from the patents
Distance between coils:
Patent from 1902: " Several electromagnets are arranged opposing each other, and their opposite pole faces separated by a small distance."
Patent from 1908:" ..there is no need to make them round, nor leave any space between one and the other."
Placement of coils:
Patent from 1902: "In the empty space remaining between the pole faces of the electromagnets of these two series, the induced wire passes"
Patent from 1908: "characterized by two series of electromagnets that form the inductor circuit, between whose poles run the properly
Distance between coils:
Patent from 1902: " Several electromagnets are arranged opposing each other, and their opposite pole faces separated by a small distance."
Patent from 1908:" ..there is no need to make them round, nor leave any space between one and the other."
Placement of coils:
Patent from 1902: "In the empty space remaining between the pole faces of the electromagnets of these two series, the induced wire passes"
Patent from 1908: "characterized by two series of electromagnets that form the inductor circuit, between whose poles run the properly
Comment