US1106729A - Wireless-telegraph installation for aerial vessels. - Google Patents

Wireless-telegraph installation for aerial vessels. Download PDF

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Publication number
US1106729A
US1106729A US1913762723A US1106729A US 1106729 A US1106729 A US 1106729A US 1913762723 A US1913762723 A US 1913762723A US 1106729 A US1106729 A US 1106729A
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Prior art keywords
antenna
device
counterpoise
aeroplane
wires
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Expired - Lifetime
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Lucien Rouzet
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Lucien Rouzet
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/27Adaptation for use in or on movable bodies
    • H01Q1/28Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/30Means for trailing antennas

Description

L. ROUZET. WIRELESS TELEGRAPH INSTALLATION FOB. AERIAL VESSELS.

APPLICATION nun APR. 21, 1913.

1,106,729.- Patented Aug. 11, 191

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LUCIEN ROUZET, OF PARIS, FRANCE.

WIRELESS-TELEGRAPH INSTALLATION FOR AERIAL VESSE-LS.

Specification of Letters Patent.

Application filed April 21, 1913. Serial No. 762,723.

To all whom it may concern:

Be it known that I, LUCIEN Boozer, a citizen of the French Republic, residing at 30 Rue Beaunier, Paris, France, have invented certain new and useful Improvements in \Vireless-Telegraph Installations for Aerial Vessels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

In fitting up a wireless telegraphy station upon an aeroplane it is of great importance that in operation there shall be absolute protection from the possibility of the aviators receiving a fatal or other electric shock. The pilot in particular must not be exposed to the fear of accident through coming into contact with the installation. In fitting up a station on the aeroplane with floating antenna, that is a wire hanging beneath the aeroplane, all the fixed parts of the installation can be perfectly insulated. The winch, however, for rolling up and unrolling the antenna presents greater difiiculty in the matter of perfect insulation, and it must be borne in mind that the winch is the part of the apparatus which has to be most often manipulated.

The present invention relates to a general arrangement of the installation by which a tension node is obtained at the starting point of the antenna, that is to say at the winch upon which it is rolled. In this way the insulating of this portion becomes very imple and the dangers of sparks or'electrification through contact with this part are practically eliminated. 1

Figure 1 of the accompanying drawin shows an example of this arrangement ant Fig. 2 is a diagram of the samearrangement.

Fig. 1 shows an aeroplane F which is provided with a wireless installation constructed according to the present invention.

A is the flying antenna,\vhich is rolled up and unrolled by means of the winch B on the framework N of the aeroplane, i. e. within reach of the aviator operating the device. This winch is connected by a very short connectin device cd, to the coupling device 0 the ot er extremity f of which is connected with one or more wires G stretched upon the aeroplane and forming a small metallic network, which is so proportioned as to equilibrate the antenna with respect to the electric oscillationsand therefore constitutes a counterpoise. The metallic network forming this counterpoise is very carefully insulated at all points of attachment 2' so as to avoid any contact or production of sparks from the wires G of such network. The insulation at the points of attachment 2' may be effected in any suitable manner, for instance by means of ebonite rods ofs'utficie'ntlength to insure such insulation. Each of the rods is attached at one extremity to 'the framework ofthe aeroplane while the wires G are attached at the other extremities of the rods. The wires of the counterpoise may be constituted by a single wire, by two or more wires in parallel or by cables a follows from general considerations in connection with the construction of antennae for wireless telegraphic apparatus.

The invention is further characterized by the following arrangementz-The apparatus for producing the oscillations, T, is con- .nected to a coupling device 0 in'such a way as to excite or energize the counterpoise G. The transmitting apparatus T, can be of any system whatever for producing highfrequency; it can for example comprise an alternator M driven by the aeroplane motor, a key 12, a transformator U, a condenser R and aspark-ga E. A transmitting device comprising the aforesaid elements is shown schematically in Fig. 2. For the sake of clearness the details of the transmitter T are not shown in Fig. 1 in which only the connections of said transmitter T to the points cl and e of the coupling device 0 are indicated. The antenna A is connected to the lower part of the coupling device at the point I that is to say at the point where with ordinary fixed installations the earth is connected. The supplementary convolutions of the device 0 (that is those between @f) are so chosen as, with the counterpoise G,

Patented Aug. 11, 1914.

wires of the counterpoise are characterized by an arrangement so that the induction in the parts of the aeroplane is a minimum. With this object in view they may be arranged in various ways according to the length of the antenna. For instance, for a short antenna, the arrangement is such as shown at Fig. 1; one or more wires f--p-lz. and fg-lc with or without a connecting wire lL-lfl. For a long antenna, the counterpoise'fwith the connecting wire it7c may be in sections Z, m and 11, these points being then insulated as at 2'. In these cases the length of the wire is greater than and in electrical discord with the lengtlroif the stretchers of the metallic portions of the aeroplane.

What I claim and desire to secure by Letters'Patentof the-United States of America is. 1

1. In a wireless telegraph installation for an aerial vessel, an electrical counterpoise insulated from the framework of the aerial vessel, a flying antenna carried by'a winch on 'such,vessel, a coupling device in connection with a source of electrical oscillations and with the counterpoise and a short connection between the winch and the coupling "device, the antenna being con- I nected at the point where with an ordinary fixed station the earth is connected and the supplementary convolutions of the coupllng device that is those between the point of connection of the oscillation producing de-v vice and the counter-poise being so chosen that, with the counter-poise; they equilibrate the system in such a way as to produce a tension node at'the point of departure of the flying antenna.

2. In a wireless telegraph installation for an aerial vessel, a counterpoise formed of a network of metallic wires these wires being of such length that the period of oscillation of the system is different from the proper period of oscillation of the metallic parts of the aeroplane so as to avoid induction -in such parts, a winch mounted on the aeroplane and carrying aflying antenna, a coupling device mounted in connection with the source of oscillations and with the counterpoise,. and. a short connection between the winch and the coupling device, the antenna being connected at the point where with an ordinary fixed station the earth is connected and the supplementary convolutions of the couplingdevice, that isthose between the point of connection of the oscillation producing device and the counterpoise being so chosen that with the counterpoise they equilibrate the system in such a way as to produce a tension node at the point of departure of the flying antenna.

3. In a wireless telegraph installation for an aerial vessel, an electrical counterpoise consisting of a network of wires insulated at all points of attachment to the framework of the aerial vessel by means of ebonite rods of suflicient length to insure such insulation,

each of the rods being attached at one extremity to the framework of the vessel and .the wires ofthe network being attached atthe other extremities of such rods,a ying antenna carried by such vessel and connected at the point where with an ordinary fixed station the earth is connected, a coupling device in connection with a source of electrical oscillations and with the network forming the ccunterpoise and a short connection between the flying antenna and the coupling 'dcviceall for the purposes set forth.

In testimony whereof, I afiix my signature, in presence of two witnesses.

' LUCIEN R-OUZET. Vitnesses Hanson C. Coxn. FRED. BARLOW. Y

US1106729A 1913-04-21 1913-04-21 Wireless-telegraph installation for aerial vessels. Expired - Lifetime US1106729A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6025786A (en) * 1998-05-06 2000-02-15 Trw Inc. Transmitter for remote convenience system having coiled, extendable antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6025786A (en) * 1998-05-06 2000-02-15 Trw Inc. Transmitter for remote convenience system having coiled, extendable antenna

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