US1316188A - Radiosignaling System - Google Patents

Description

J. H. ROGERS. HADIOSIGNALING SYSTEM. APPL|C`AT10N FILED M'Amzs. 1919.

L316y1588 Patentedsepu 16,1919.r

JAMES H. ROGERS, UF HYATTSVLLE, MARYLF l llOSIG-NAJLING SYSTEM.

intensa.

vapplication tiled March tu,

To all whom it may concern: v

Be it known that l, JAMES ll.. Roenes, a citizen of the United States, residing at Hyattsville, in the county of Prince Georges and State of lt/laryland, have invented new and useful improvements in Rjadiosignaling Systems, of which the following is a specification. n

My invention relates to radio slgnaling systems, and particularly to that type of system-s in which the antenna or radio conductor or conductor for radiating electromagnetic oscillations or receiving the same,v is located either partly or entirely beneath the surface ofthe earth. x l

@ne object of the invention is to utilize more ed'ectively the so-called surface waves traversing the earths crust, and the so-called space waves l propagated through the air or ether above the surface of the earth.

Another object is to eliminate more edectively the strays or static interferences which have proved so detrimental in wireless signaling.

ln carrying the invention into ed'ectv ll provide what is commonly called a loop, and this is arranged to extend substantially horizontally or parallel to the surface of the earth, one side of the loop being buried beneath the surface of the earth and the other side being disposed above the surface of the earth.

The invention consists in the novel combination and arrangement of apparatus and circuits constituting a wireless signaling sys tem hereinafter described and claimed and illustrated in the accompanying drawings, all for the purpose of transmitting and receiving 'signals through space.

'lhe invention is diagrammatically illustrated in the accompanying drawings, in which:

Figure l shows the loopedconductor consisting of uninsulated wire, receiving instruments being associated with the conductor; Fig. la shows a conventional arrangement of sending instruments, which may be substituted for the receiving instruments for transmitting signals, it being understood either the sending or receiving instruments shown in Fi'gs.l and l.m are to be used in connection with the arrangement shown in the remaining gures; y

Fig. 2 shows an embodiment of the in- Specicatton of Letters Patent;

Patented sept... ln, linfa...

ioia serial no. maria Vention in which the portion of the radio conductor buried beneath the surface of the earth is insulated therefrom and inclosed within a metallic casingg? Fig. 3 shows an embodiment of the invention in which both the portion of the radio conductor below the surface of the earth and the portion above the surface of the earth `are inclosed by a metallic casing;

Figs. 4 and 5 illustrate modifications in which a portion or portions of the radio conductor is or are inclosed within another portion or portions of the same.' t

Referring to the drawings, l0 indicates the signal instruments, which in Fig. l are those for receiving signals, while in Fig. lathe instruments for sending signals are shown. ln Fig. l, ll is a detector of any type, preferably an audion, l2 a telephone, and 18 and lll the usual condensers. .Any desired type of instruments and arrangement of connecting circuits may be employed. ln Fig. l suitable sending instruments are conventionally shown. rl"hese comprise a generator l5, transformer lo, spark gap ll', condenser 18 and key 19.

'llhe above-mentioned instruments are well known in the art of radio or magnetic wave signaling, and need not be further described.

Referring first' particularly to' Fig. l, the looped radio conductor is shown as an uninsulated wire disposed, one side 20 of the loop, above the surface of the earth, and the other side 2l, buried beneath `the surface of the earth. The surface of the earth is lindicated at 22.

rFhe signal instruments are shown associated with the radio conductor by means of an inductive coupling, one side 23 of which constitutes one winding of the transformer, and 2li the other winding of the transformer, but may be associated therewith in any other suitable manner. 'lhe winding 2l is included in the looped radio conductor.

Une side of the loop 2O is supported above the surface of the earth in any suitable manner as by posts 25, upon which insulators 26 are provided. 'lhe posts 25 are preferably rather short, say ten to twenty feet, as it is not desirable to have the elevated side of the loo too far above the surface of the earth. d truss wire 27 may be employed at one end of the loop for securing that end, and a second truss wire 28 may be employed at the other end of the loop for ttl llt

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the same purpose. It W-ill therefore be seen that the side 20 of the loop is supported above Ilout insulated from the surface of the earth.

The other side 21 of the loop may be buried beneath the surface of the earth in electrical contact with the earth substantially throughout its length. It will be observed that both sides of the loop are disposed su'bstantially horizontally or parallel to the surface of the earth, and the extent of the loop may be varied in accordance with the requirements and special conditions under which it is desired to Work. For instance the loop may be 500 feet, 1000 feet, or 25000 feet, or more, in length.

Instead of having the side of the loop buried beneath the surface of the earth in direct contact with the earth, it may be insulated therefrom as shown in Figs. 2 and 3. In Fig. 2 the side 21 of the loop is shown inclosed Within a metalli-c casing 29, which is preferably an ordinary iron pipe, from Whlch the .radio conductor is insulated by insulation 30. In this instance all of the advantages of the action of the metallic casing inclosing the side of the loop may be obtained, the said casing being itself in intimate contact with the earth substantially throughout its length.

In Fig. 3, a plurality of coils of the looped conductor are shown, the signaling instrument being associated with one of these coils and the side 21 of the loopy buried beneath the surface of the earth is inclosed W-ithin a metallic casing 29 from which the radio conductors are insulated, as shown in Fig. 2. In the system here shown, also, the side 20 of the loop above the surface of the earth is inclosed Within a metallic casing 31 from which the radio conductor is insulated, as already described in connection With the side of the loop below the surface. The metallic casing 31 is supported by posts 25, from which it is insulated 'by means of insulators 32.

'In Fig. 4 the loop is shown as composed of various parts including both metallic casings and ordinary Wire conductors. Here the circuit is from coil 24 of the inductive coupling, condenser 33, the -metallic casing 31 ,insulated above the surface of the ground, Wire 34 connecting the other end of said metallic casing with the adjacent end of the metallic casing 29 buried beneath the surface of the ground and in contact therewith substantially throughout its length, and Wire 35 Which extends through metallic casing 31 but insulated therefrom and then through metallic casing 29 and return to coil 24. In this instance the entire structure Will oscillate in accordance with the oscillations employed in sending or receiving signals.

In the modification shown in Fig. 5, the

loop is somewhat similar to that shown in Fig. 4, the circuit being from coil 24, condenser 33, conductor 36 passing through metallic casing 31 and insulated therefrom, and connected to the adjacent end 37 of metallic casing 29, Wire 38 connecting the opposite end of said casing 29 with the adjacent end of casing 31, the opposite end of casing 31 and through Wire 39 to coil 24.

It Will be understood that it is an intention in the above embodiments of the invention shown in Figs. 2, 3, 4 and 5, that the side of the loop buried beneath the surface of the. earth should in some instances bc, entirely insulated from the earth, and others that it should include one conductor within another.

A looped radio conductor arranged as above described, decreases the disturbances to -Which radio signals are more or less subject, and this decrease is more or less according to the combination of Wires and metallic casings empl-eyed, and the circuits, capacities, and inductances used at the point of receiving. The strays may be almost eutirely balanced, out by the proper arrangements off values of the above mentioned circuits, capacities and inductances.

In accordance With the patent statutes I have described what I now believe to be the best embodiment of the inv tion, but I do not wish to be understood t ereby as limit` ing myself or the scope of the invention, as many changes and modifications may be made Without departing from the spirit of the invention and all such I aim to include in the scope of the appended claims.

What I claim as new, and desire to secure by Letters Patent of the United States, is

1. A radio signaling system comprising a looped radio conductor containing a plurality of turns of radio conductor extending substantially parallel to and having one si de of the loop buried beneath the surface of the earth, and radio signal instruments associated with said conductor.

2. A radio signaling system comprising an elongated looped radio conductor, the sides of the loop extending substantially parallel to the surface of the earth, one side of the loop being buried beneath the surface. of the earth but insulated from lthe earth substantially throughout its length, the other 'side of the loop being supported above the surface of the earth, and signal instruments associated with said conductor.

3. A radio signaling system comprising an elongated looped radio conductor, the sides of the loop extending substantially parallel to the surface of the earth, one side of the loop being buried beneath the surface of the earth, a metallic covering inclosing said buried side of the loop throughout vits length but insulated therefrom, the other side of said loop being supface of the earth, a metallic covering inclosing said buried side of the loop throughout its length but insulated therefrom, the other side of said loop being supported above the surface of the earth, and a metallic casing iuclosing said last ymentioned side of the loop throughout its length but insulated therefrom and from the earth, and signal instruments associated with said conductors.

5. A radio signaling system comprising 'an elongated looped radio conductor, the

sides of the loop extending substantially parallel to the surface of the earth, one side of the loop being buried beneath the surface of the earth, but insulated therefrom, the other side of said loopbeing supported above the surface of the earth, and a metallic casing inclosing said last mentioned side of the loop throughout its length but insulated therefrom and from the earth, and signal instruments associated with said conductors. v

6. 'A radio signaling system comprising an elongated looped conductor Which includes Within the loop one conductor passing through andinclosed Within but insulated from the other conductor, and signal instruments associated with said conductor.

7, A radio signaling system comprising an elongated looped radlo conductor containing a plurality of turns, one side of the loop extending substantially parallel to and having one side of the loop buried beneath the surface of the earth, the other side of the loop being supported above the surface of the earth, each side of the loop consisting of a metallic casing and a length of the radio conductor disposed therein but insulated therefrom. l

In testimony whereof I have hereunto set I my hand. f

JAMES H. ROGERS.

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