US2747183A - Television antenna - Google Patents

Description

w. w. EDWARDS 2,747,13

TELEVISION ANTENNA Filed March 30, 1955 2 Sheets-Sheet 1 1 VENTOR.

Q I v 7 Ute St es 3 Claims. (Cl. 343893) The present invention relates to receiving antennas and more particularly to an arrangement for an omnidirectional television receiving antenna.

A number of television antennas have been manufactured; but each of them have the common failure of not being eflicient in receiving television waves from all directions. Some of the above mentioned antennas have been provided with means for manually adjusting the direction of reception by turning the entire arrangement by the rotation of the base holding the conductor elements. The primary objection to this type of antenna is the initial cost and the cost of installation.

The primary object of this invention is to provide a stationary television receiving antenna which will simultaneously receive broadcast Waves from all directions.

An additional object of this invention is to provide a television receiving antenna which will have high fidelity in bringing in television signals and which may be manufactured at a comparatively low cost.

A further object of this invention is to provide an antenna of this class which may be mounted exteriorly of a building and which will cover substantially a normal entire television broadcasting range without any adjustment of the antenna.

A still further object of this invention is to provide an antenna of this class by which the best reproduction may be obtained with maximum reception from various television broadcasting stations regardless of their angular location and within the normal reception range of the stations broadcasting.

Yet another object is to provide an antenna of this class which may be easily installed upon a single support.

The present invention accomplishes these and other objects by providing a horizontally disposed ring supported by a vertically disposed post and having a plurality of radially spaced-apart brackets rigidly connected to the inner periphery of the ring for rigidly supporting conductor elements converging inwardly therefrom. Two pairs of superposed spaced-apart disk plates rigidly grip the inwardly disposed ends of the radial elements and to which the television lead-end is connected. The brackets further support a plurality of conductor elements in parallel relation, and angularly disposed, with relation to the vertical.

Other objects will be apparent from the following description when taken in conjunction with the accompanying two sheets of drawings, wherein:

Figure l is a perspective view of the device;

Figure 2 is a top view of the device;

Figure 3 is a side elevational view of the device;

Figure 4 is a fragmentary perspective view illustrating the relative relationship of the connecting part of the device; and,

Figure 5 is a fragmentary vertical cross-sectional view of the central connecting disks and impulse pick-up connection.

Like characters of reference designate like parts in those figures of the drawings in which they occur.

2,747,183 Patented May 22, 1956 In the drawings:

The reference numeral 10 indicates, as a whole, the device which includes a horizontally disposed tubular ring 12 supported in spaced relation above the upper end of a vertically disposed tubular post 14 by three radial equally spaced-apart rigidly connected upwardly diverging legs 16. A plurality of substantially Z-shaped nonconductor tubular brackets 18 are rigidly connected to the inner periphery of the ring 12 in circumferentially equally spaced-apart relation. Each bracket 18 has parallel inwardly projecting ends or arms 20 and 22 disposed above and below, respectively, of the plane of the ring 12. The arms 20 and 22 respectively closely receive the ends of a pair of tubate conductor elements 24 and 26. The length of the elements 24 and 26 is substantially equal to onethird of a wave length. The conductor elements 24 and 26 converge toward the center of the ring 12. The elements 26 have their converging end portions rigidly connected in radially spaced-apart relation between a pair of horizontal clamping disks or plates 28 at the center of the ring 12. Similarly the elements 24 have their converging end portions rigidly connected in radially spacedapart relation by a second pair of clamping disks or plates 30 in spaced-apart superposed relation with the plates 28 thus forming an upper and a lower layer of conductor elements. Suitable radially spaced stud bolts 32 through the plates hold the respective plates on the elements 24 and 26. Suitable lead-in connections 34 are rigidly connected, as by soldering, to the respective plates 28 and 30 (Fig. 5).

Each of the bracket arms 20 and 22 are through perforated intermediate their ends in parallel relation rela tive to each other and angularly disposed relative to the vertical, to closely receive, medially their ends, pairs of tubate conductor elements 36 and 38, respectively, similar to the elements 24 and 26. The length of the elements 36 and 38 is substantially equal with relation to a wave length, such wave length being adjusted substantially at the middle of the complete television band. The normal television band now extends from 54 to 216 megacycles for very high frequency and from 470 to 890 megacycles for ultra high frequency, with each broadcasting station having a broadcasting band six megacycles wide. Each of the conductor rods or elements 36 and 38 are in contact with the adjacent end of the converging conductor rod elements 24 and 26, respectively, for conducting television signals from the angularly disposed elements to the lead-in wire, not shown. Generally the pairs of conductor elements 36 and 38 are disposed on an angle of approximately 50 degrees with relation to the vertical although the angle may be varied some as long as the upper and lower ends of each pair of elements 36 and 38 overlap, in vertical relation, the respective upper and lower ends of each adjacent pair of elements held in parallel relation by the adjoining brackets 18 on either side thereof.

Therefore it seems obvious that a stationary television antenna has been provided which has conductor elements substantially equal with relation to a wave length lying at a plurality of angles for receiving television signals broadcast from any direction.

Obviously the invention is susceptible to some change or alteration without defeating its practicability, and I therefore do not Wish to be confined to the preferred embodiment shown in the drawings and described herein, further than I am limited by the scope of the appended claims.

I claim:

1. An omnidirectional antenna, including: a horizontally disposed ring; a vertically disposed support; upwardly diverging legs rigidly connecting said ring to the upper portion of said support; a plurality of tubular brackets 3 rigidly connected in spaced-apart relation to the inner periphery ofi said ring, said brackets each having. short upper and lower inwardly extending arms disposed above and below, respectively, of the plane of said ring, each said arm having a through perforation angularly disposed with relation to the vertical; a plurality of inwardly converging conductors arecarried at one end by the bore of each said bracket arm; respectively the leri-gtl'i of said conductors being substantially one-third an average wave length; two pairs of superposed spaced-apart plates rigidly gripping the inwardly extending ends of said ccn verging conductors; and a plurality of pairs of angularly disposed conductors carried intermediate their ends in parallel relation by the angularly disposed perforation of each said bracket arm, respectively, the length of said angularly disposed conductor elements being substantially an average wave length, whereby the upper and lower ends of said pairs of angularly'disposed conductors overlap in vertical relation the respective upper and lower ends of each adjacent'pair' of angular conductors.

2. An omnidirectional antenna, including: a horizontally disposed tubular ring; a vertically disposed tubular support post; upwardly diverging legs rigidly connecting said" ring to the upper end of said post; a plurality of substantially Z-shaped non-conductor tubular brackets rigidly connected in equal spaced-apart relation to the inner periphery of said ring said brackets each having an upper V and a lower inwardly extending arm disposed above and below, respectively, of the plane of said ring, each said arm having a through perforation angularly disposed with relation to the vertical center line of said post; a like plurality of inwardly converging tubular conductor elements carried at one end by the bore of each said bracket arm, respectively, the length of said converging elements being substantially one-third of an average wave length; two pairs of superposed spaced-apart plates rigidly gripping to the inwardly disposed ends of said conductors therebetween; andta plurality of pairs of angularly disposed tubular conductor elements carried medially their ends in parallel relation by the angularly disposed perforation of each said bracket arm, respectively, the length of said angularly disposed elements being substantially an average wave length.

3. An omnidirectional antenna, including: a horizontally disposed tubular ring; a vertically disposed tubular support post; upwardly diverging legs rigidly connecting said ring to the upper end of said post; a plurality of substantially Z-shaped non-conductor tubular brackets rigidly connectedin equal spaced-apart relation to the inner periphery of said ring, said brackets each having short upper and lower inwardly extending arms disposed above and below, respectively, of the plane of said ring, each said arm having a through-perforation angularly disposed with relation to the vertical; a like plurality of elongated inwardly converging tubular conductors carried at one end by the bore of each said bracket arm, respectively, forming an upper and a lower layer of conductors; the length of each said conductor being substantially onethirdan average wave length; two pairs of superposed spaced-apart disk plates rigidly gripping inradially spacedapart relation the inwardly extending ends of the upper and lower layers of the inwardly converging conductors, respectively; and a plurality of pairs of elongated angularly disposed tubular conductors carried medially their ends in parallel relation by the angularly disposed perforation of each said bracket arm, respectively, the lengthof said angularly disposed conductors being substantially an average wave length, whereby the upper and lower ends of said pairs of angularly disposed conductors overlap in vertical relation the respective upper and lower ends of each adjacent pair of angular conductors.

No references cited.

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