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but it is obvious that in this construction the outward-extending members cannot be carried to so great a distance on account of mechanical difficulties as that shown in Fig. 1.

100In the form shown in Fig. 3 the outwardly-extending conductors 2 are inclined downward from a horizontal plane.

In the preferred form illustrated in Fig. 4 the outwardly-extending members 2^c radiate 105in all directions from the vertical member 1 in a horizontal plane, their free ends being from, as in the form shown in Fig. 1. I have obtained good results by using eight of the 120outwardly-extending conductors 2^c, each one forming an angle of forty-five degrees with its neighbor. I have also found that good results may be obtained by making the members 2^d of such a length that the free ends of the 125adjacent members will be supported at a distance of about thirty feet from each other. The members 2^d may be placed at any desired height above the earth, depending upon the distance to which it is desired to transmit or 130from which it is desired to receive the signals. I have found, however, that with an elevated conductor of this form measuring about twenty-five feet in height I have been able to transmit signals to as great a distance as could 135be accomplished with a single vertical aerial conductor of six times the height.

A special advantage of a plurality of outwardly-extending aerials is that having a common center the oscillations in the several 140aerials concentrate their effect at a common point, and the apparatus is thus more efficient both for transmission and reception.

The whole system of both the vertical and projecting aerials should be in tune with the 145circuits of the transmitter and receiver, as fully explained in my British Patent No. 7,777 of 1900.

I do not limit myself to any specific dimensions or elevations of the members comprising150 the elevated conductor nor to the numbers of members which extend outwardly from the vertical member.

It is to be understood that under the term “wire” I include rods or other form of 155conductor which admits of great extension or length without requiring impracticable forms of support.

What I claim, however, and desire to secure by Letters Patent, is—

1601. As a means for increasing the effective distance to which intelligible signals may be transmitted by electrical oscillations of high frequency, an elevated conductor, comprising an upright wire or rod, reduced in height compared with the usual height of elevated165 conductors heretofore used for a given distance, and a wire or rod extending outwardly therefrom in an elevated position.

2. In a system of signaling by means of 170electrical oscillations of high frequency, an elevated conductor, comprising an upright wire or rod and a plurality of wires extending outwardly therefrom in elevated positions whereby the distance to which intelligible signals may be transmitted with a given amount of175 energy is increased, substantially as described.

3. In a system of signaling by means of electrical oscillations of high frequency, an elevated conductor, comprising an upright wire or rod and a wire extending outwardly therefrom180 in an elevated position, in combination with a support for said outwardly-extending member whereby the distance to which intelligible signals may be transmitted with a given amount of energy is increased, 185substantially as described.

4. In a system of signaling by means of electrical oscillations of high frequency, an elevated conductor, comprising an upright wire or rod and a plurality of wires extending 190outwardly therefrom in elevated positions, in combination with supports for the free ends of said outwardly-extending members whereby the distance to which intelligible signals may be transmitted with a given amount of195 energy is increased, substantially as described.

5. In a system of signaling by means of electrical oscillations of high frequency, an elevated conductor, comprising an upright wire or rod, and a horizontal wire or rod extending200 outwardly therefrom in an elevated position, and exceeding in length the upright member whereby the distance to which intelligible signals may be transmitted with a given amount of energy is increased, 205substantially as described.

6. In a system of signaling by means of electrical oscillations of high frequency, an elevated conductor, comprising an upright member and a plurality of outwardly-extending210 members extending radially from a common center in combination with supports for said outwardly-extending members whereby the distance to which intelligible signals may be transmitted with a given amount of energy215 is increased, substantially as described.

In witness whereof I have hereunto signed my name this 3d day of September, 1903.

In presence of—

J. Bottomley,

W. H. Bentley.