Page:United States patent 889031.pdf/3

which the surrounding aerial medium is affected to transmit articulate speech between a sending and a receiving medium.

3. In a telephone, means introduced into the primary circuit, said means comprising a plurality of primary windings, a secondary coil which is energized thereby, a mouth-piece, a transmitting diaphragm with metallic contacts and a microphone transmitter actuated in unison, means whereby a spark is produced, and the aerial transmitting medium is affected to transmit articulate speech, and a mechanism capable of receiving transmitted speech.

4. In a telephone, means introduced into the primary circuit, said means comprising a plurality of primary windings whereby a secondary coil is energized, a mouth piece, a transmitting diaphragm with metallic contacts and a microphone transmitter actuated in unison means whereby a spark is produced, and the aerial transmitting medium is affected to transmit articulate speech, and a receiving mechanism capable of receiving transmitted speech.

5. In a wireless telephone, means for intensifying the vibrations between a primary telephone transmitter and the aerial transmission device, said means comprising a chamber with which the mouth-piece is connected, a microphone transmitter and a transmitting diaphragm connected therewith, an induction coil with double primary windings connected respectively with the transmitters, and a secondary circuit energized thereby connected with the aerial wire, and having a spark gap, and a battery, a resistance, and a condenser in the primary circuits.

6. In a wireless telephone, a mouthpiece, a transmitting diaphragm, a battery, an induction coil with two primary windings, wires connecting one of said windings and the diaphragm, a microphone transmitter, connections between said transmitter and the diaphragm, a microphone transmitter, connections between said transmitter and the other primary winding, and a secondary coil with a spark-gap and aerial and ground connections.

7. In a wireless telephone, a mouth-piece, a transmitting diaphragm with metallic contacts, an induction coil and battery and connections with the transmitter, a microphone transmitter actuated in unison with the first named transmitter, a second primary winding of the induction coil connected with the microphone transmitter, and a resistance interposed between said transmitter and the connected primary winding of the coil.

8. In a wireless telephone, a mouth-piece, a transmitting diaphragm, a battery, an induction coil, wires connecting the coil and transmitter, a microphone transmitter, means whereby it is actuated in unison with the first named transmitter, a second primary winding of the induction coil, said second winding being connected with the microphone transmitter, and a condenser interposed between the local battery and the first transmitter.

9. In an apparatus of the character described, a chamber, a microphone transmitter, a transmitting diaphragm at opposite sides, a mouth-piece connecting with the intermediate portion of the chamber, a coil composed of primary windings, one of which is connected with the microphone transmitter and the other with the diaphragm, coacting contacts one of which is carried by the diaphragm, and a secondary coil with spark gap and aerial connections.

10. In an apparatus of the character described, a chamber or case with microphone transmitter, a transmitting diaphragm and mouth-piece, a coil composed of double primary windings, and a secondary winding with spark gap and aerial connections, said primaries being connected respectively with the microphone and with the transmitter diaphragm, co-acting contacts one of which is carried by the diaphragm, and a battery and resistance within the primary circuit.

11. In an apparatus of the character described, a microphone transmitter, a mouth-piece, and a transmitting diaphragm, a contact point carried by the diaphragm, a fixed contact with which the diaphragm contact co-acts, a coil consisting of double primary windings, one of which connects with the fixed contact, and the other with the microphone transmitter, a secondary coil with spark gap and aerial wires, and a battery resistance and condenser in the primary circuits.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

Witnesses:

S. H. Nourse,

Henry P. Tricou.