Page:Canadian patent 30172.djvu/9

 tribution herein described, which consists in generating in independent circuits producing an inductive field alternating currents in such order or manner as to produce by their conjoint effect a progressive shifting of the points of maximum effect of the field and inducing thereby currents in the coils or convolutions of a circuit located within the inductive influence of the field, as set forth.

3. The combination with a core closed upon itself, inducing or primary coils wound thereon and connected up in independent pairs or sets and induced or secondary coils wound upon or near the primary coil, of a generator of alternating currents and independent circuits connecting the primary coils with the corresponding coils of the generator, as herein set forth.

4. The combination with independent electric transmission circuits, of transformers consisting of annular or similar cores wound with primary and secondary coils, the opposite primary coil of each transformer being connected to one of the transmission circuits, an alternating current generator with independent induced or armature coils connected with the transmission circuit whereby alternating currents may be directed through the primary coils of the transformers in the order and manner herein described.

New York, April 5th, 1888. NIKOLA TESLA

Signed in presence of FRANK E. HARTLEY FRANK D. MURPHY

This is the specification referred to in, the affidavit.