Nikola Tesla U.S. Patent 723,188 - Method of Signaling Patent Wrapper Page 55

612 าน 7 tuned to respond exclusively there to and controlling by means of the conjoint action of sucn circuits a local circuit, as set forth. 3. The method of signalling which consists in producing a plurality of series of impulses or disturbances differing from each other in character and order of succession, exciting by the impulses of each series one of a plurality of receiving circuits tuned to respond exclusively there to and controlling by the conjoint action of such circuits a local circuit, as set forth. 4. The method of signalling which consists in producing a plurality of series of electrical impulses of different character, varying the time interval between the emission of such impulses, exciting by the impulses of each series one of a plurality of receiving circuits tuned to respond exclusively there to and controlling by the conjoint action of such cir-, cuits a local circuit, as set forth. 5. The method of transmitting electrical energy conveying intelligible signals which consists in producing a plurality of electrical impulses of different character, developing by the impuls es of each kind a current in one of a plurality of receiving circuits tuned to respond exclusively thereto, controlling the action or effect of the transmitted impulses upon the receiving circuits by varying the character of said impulses, and operating or controlling the operation of a receiver by the conjoint action of two or more of said receiving circuits, as set forth. 6. The method of transmitting electrical energy which consists in producing a plurality of electrical waves or impulses of different periodicities, varying the order of trans-11