US2866195A - Television receiving antenna - Google Patents

Description

2 Sheets-Sheet l Filed Feb. 23. 1954 sai De@ 23, 195s N. C. POWUSON EIVING ANTENNA TELEVISION REC 2 Sheets-Sheet 2 Filed Feb. 25. 1954 United States Patent() M This invention relates generally to antennae and more especially to indoor television antennae. It is one of the principal objects of the present invention to provide a simple, eicient, durable and inexpensive television antenna made of metallic tape, such as aluminum `or the like, and adaptable for convenient adhesive application to a ceiling, an attic floor or attic. ceiling, or to any flat horizontal support made of dielectric material. Y.

A further object ofthe invention 4is the provision of an antenna of the character described whose component parts can be marketed in kit form together with a simple chart and printed directions for orienting and inscribing a layout for the completed antenna on a support as aforesaid.

A further object is the provision of a suitable support for `the antenna in its entirety which can be quickly and accurately oriented and permanently mounted in any desired indoor location. l

A still further object is the provision of a television antenna made of metallic tape whose electric conductance provides high gain on both the high and ultra high frequency bands.

The foregoing and other objects will appear as my invention is more fully hereinafter described in the following specification, illustrated' in the accompanying drawings, and finally pointed out in the appended claims.

In the accompanying drawings:

Figure 1 represents a chart having printed thereon an installation diagram, dimensions, and instructions pertaining to the installationof the antenna.

Figure 2 is` a top plan view of the antenna applied to a iiat, portable and horizontally adjustable support.

Figure 3 is a fragmentary detail view of a typical interconnection of the metallic tapes and their attachment to each other and to a support by adhesive tape.

Figure 4 is a perspective view of a dipole in tape form folded over on itself across the top and bottom surfaces of an adjustable support, a fragment of which is shown in broken lines.

Figure 5 is an enlarged fragmentary detail view of the terminal ends of the dipole and their connection to the lead-in wires.

Referring now more particularly to the drawings:

It is well known that each of the many telecasting stations now in existence operate on different wave lengths. For example, channel 6 operates on a predetermined wave length at very high frequency, While channel 27 operates on a different wave length at ultra high frequency. Accordingly, the chart shown in Figure 1 must be followed to determine the length of the metallic tape to be applied to the selected support. The rst element of the antenna to be applied to the support, whether it be a ceiling or floor or the support shown in Figure 2, is the longitudinal strip indicated at 2. The next two elements, which are necessarily of equal length for the arrangement of the antenna shown, are the two directors 3 and 4. The directors are laid across the longitudinal strip in electrical contact therewith and, ex-

' tend outwardly an equal distance fromboth` sides theretheir support.

of. The next element to be applied, also -in velectricalcontactwith the longitudinal strip 2, is the reflector strip indicated `at 5. As shown in Fig. 3 the elements 3, 4 and 5 are'fastened to thepsupport by means of theirre spective strips of adhesive tape 6 and the strip 2 is then covered with the tape to also fasten it to thesupport. The adhesive tape Vmay be'of any suitable type such a's,` for instance,.paper vtape gummed on one side, Scotch Tape, or the like. The width of the adhesive tape should be twice that of the metallic tape,'and I have` obtained satisfactory, results by using metallic tape- I0nehalf inch.wide and adhesive tape one inch wide so .that

an adequate overlap of one-fourth inch is provided onf both sides of the tape to 'securely fasten vboth tapes to '7;y If, for example, the wave length of the telecasting;

station involved is 137 inches, 139 inches of metallic;

i tape is folded about the support as best shown in Figure 4. Each terminal endof the ldipole tape is turned ,at right angles as at 8 to the under fold thereof a distance of one inch and is apertured as at 9 to receive fastening screws and washers 10 by means of which screwsl the,

recommended lead-in wires 11 to the television receiving set are attached to the dipole and the ends ofthe dipole are secured to the support. A corresponding length of the adhesive tape 6 is applied to the entire length of the dipole, terminating just short of the terminal ends 8 thereof as shown in Figure 5. The vertical spacing between the parallel folds of the dipole is not important so long as they do not come into contact with one another. Therefore, a dielectric support of any desired thickness can be used. This feature enables the antenna to be applied to a ceiling or a floor as aforesaid by merely apparating the folds of the dipole by one or more layersof heavy paper, cardboard, thin plywood, or the like.

The form of support shown in Figure 2 comprises a sheet of thin plywood indicated at 12 having two corner apertures 13 at one of its ends and a central `aperture 14 at its opposite end. This support along with the assembled antenna fastened thereto as aforesaid is rst attached to a horizontal supporting surface such as a. floor or a ceiling or a horizontal framework by a fastening screw 4extending through the aperture 14. This screw then serves as a xed pivot point for swinging the support to` either side as shown in broken lines in Figure 2 to accurately orientate the antenna by aligning the horizontal strip 2 with a sight-line to the telecasting station. Following this the support is premanently secured in place by screws extending through the corner apertures 13. This aligning could also. be done by checking a nearby outdoor antenna with a magnetic compass to determine its angularity in degrees from .any selected point on the compass. This method of alignment can also be used when inscribing the horizontal strip 2 of the diagram on a floor or ceiling in accordance with the instruction chart.

As shown by way' of example only, the dimensions appearing on the chart in Figure 1 are for Channel 6, wherein the directors 3 and 4 must each be 621/2 inches long, the reflector 5 71% inches, and the total length of the dipole 139 inches, including its right angular terminal ends indicated at 8. The two directors must be spaced 17% inches from one another and from the dipole and the reflector spaced 311A inches from the dipole.

It is to be understood, of course, that the foregoing Patented Dec. 23, 1958 With said elements lnow* fastened inv place, the support can be conveniently manipulatedfor,

. 3l dimensions are for one channel only and that they are variable to conform to thewave lengths of different channels.

While'y IUhave shown a particular form of rembodimentY ofmy invention-TI am aware that many minor changes therein will readily suggest themselves to others skilled in the "art without departing from the spirit and scope of the invention. Havingv thus described my invention wliat I claim as new yand desire to protect by Letters Patent 1s: v l

- 1. Anl antenna for receiving television signals, comprising in combination a rectangular supporting sheet of dielectric material, a strip of electro-conductive tape attached to one side of said sheet substantially throughout the length thereof, a pair of transverse directors and alreector electrically connected to said strip of electrocondu'ctive-'tape and arranged in parallel spaced relation to onelanother on the same side of said sheet, a dipole disposed between said reector and one of said directors and electrically connected to said strip of tape, said dipole being folded over and under said supporting sheet and terminating on the opposite side of said sheet in two terminals for attachment to lead-in wires of a television receiving set.

2. An antenna as in claim 1 wherein said supporting sheet has a central aperture at one of its ends to receive Ya fastening element for pivotally attaching the sheet to a horizontal supporting surface for swinging the sheet to orientate the antenna by aligning said lengthwise Strip of electroconductive tape with a sightline to the telecasting station, the opposite end of the sheet being apertured at both of its corners to receive fastening elements for permanently securing the sheet to said horizontal supporting surface in an orientated position.

References Cited in the file of this patent UNITED STATES PATENTS 2,631,236 Root' Mar. 10, 1953 2,667,577 Grazuano Jan. 26, 1954 2,714,161 Featherstun July 26, 1955 FOREIGN PATENTS 387,215 Great Britain Feb. 2, 1933 1,019,534 'France Oct. 29, 1952

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