Page:United States patent 707064.pdf/3

peated as long as the train of waves is received, and the relay 16 is held over and causes the sounder to be operated to receive a dot or a dash.

105I would have it understood that I may employ any construction of decoherer, preferring, however, to use a magnetic decoherer instead of the tapping devices generally used.

From this description it is evident that I 110produce a wireless system which will be absolutely sure in operation for a long distance or outdoor purposes.

The wires 10 and 2 I have connected with a condenser, which is adapted to prevent any 115current flowing from wire 9 to wire 20, but allows the wave to pass through the condenser and my reason for employing the resistance 21 is to balance the magnet 19, to which it is equal. It will be obvserved that the coherers 1204 and 8 are in the same main circuit, being connected through relay 19 and the coherer 8 through the inductive resistance 21, which as I have mentioned before, is equal to the 125relay 19.

It is evident that I provide a system of wireless telegraphy having in its receiving-station a series of coherers, which are arranged in parallel and in the same main 130circuit. They are so arranged that when they conduct one decoherer is operated to decohere one of the coherers, and as the latter loses its resistance and conducts again, the remaining decoherer is operated to decohere 135the other coherer; said decoherers therefore being dependent upon the operation of the coherers.

Having thus fully described my invention, what I claim as new, and desire to secure by 140Letters Patent, is—

1. In a system of wireless telegraphy, a transmitting and a receiving apparatus; said receiving apparatus, consisting of a series of coherers in the same main circuit and in parallel,145 and a decohering device of each coherer, said decohering devices being dependent upon the action of the coherers, one being operated when the coherers, one being operated when the coherers conduct and the other when one of the coherers has been decohered.

1502. A receiving apparatus for wireless telegraphy, comprising a series of imperfect electrical contacts, said contacts being in the same main circuit, a relay in said main circuit, a receiving-instrument circuit controlled 155by the relay, another relay in said main circuit and decohering devices adapted to be operated in succession as the last-mentioned relay is magnetized and demagnetized.

3. A receiving apparatus comprising air 160and ground plates, a series of coherers in parallel and in circuit therewith, a relay in circuit with the coherers, a sounder-circuit operated by said relay, another relay in the coherer-circuit, and decohering means for each coherer adapted to be operated in 165succession as the last-mentioned relay is magnetized and demagnetized.

4. A receiving apparatus comprising a series of coherers in parallel and in the same main circuit, a decoherer for each coherer, separated circuits for each decoherer170 and a relay in said main circuit for operating said decoherers one at a time in succession as the said relay is magnetized and demagnetized.

5. A receiving apparatus, comprising a 175series of coherers, air and ground plates connected therewith, a main circuit180 embracing said coherers which are in parallel, a relay in said circuit, a sounder-circuit operated by said relay, another relay in said main circuit and a decoherer for each coherer adapted to be operated in succession as the last mentioned relay is magnetized and demagnetized.

6. In a receiver, a plurality of wave-responsive 185devices, a relay controlled by said devices, two circuits controlled by said relay each including a decohering device.

7. In a receiver, a plurality of wave-responsive devices, a relay controlled by said devices, a decoherer-circuit operated upon the190 energization of said relay, and a decoherer-circuit closed upon the deënergization of said relay.

8. In a receiver, a plurality of wave-responsive devices, a relay controlled by one of said195 devices, a decohering device for the wave-responsive device controlling said relay, actuated upon the energization of said relay, and a decoherer-circuit closed upon the de-energization of said relay.200

9. A pluality of wave-responsive devices, a recorder-relay controlled thereby, a second relay controlled by a portion of said wave-responsive devices, a decoherer actuated upon the energization of the second relay, and 205decohering means for the remaining wave-responsive devices actuated upon the restoration of said first mentioned portion.

10. In a receiver, a plurality of wave-responsive devices connected in parallel, an 210automatic decoherer for a portion of said devices, and means operative upon the restoration of said portion of said devices to decohere the remaining wave-responsive devices.

In testimony whereof I affix my signature215 in the presence of two witnesses.

Witnesses:

M. Wiegand,

E. Picard.