US2438272A - Static eliminator for radio receiving sets - Google Patents

Description

STATIC ELIMINATOR FOR RADIO RECEIVING SETS Filed Feb. 28, 1947 INVENTOR.

Patented Mar. 23, I948 UNITED STATES PATENT OFFICE STATIC ELIMINA'I'OR FOR RECEIVING SETS aamo I Darnell Asbery Dance, Salem, Ark. Application February 28, 1947, Serial No. 731,631

' 6 Claims. (01. 201-63) This invention relatesto a static eliminator for radio receiving sets.

In the'operation of radio receiving sets it is known that static may be substantiall eliminated if signal strength will be sacrificed to a limited extent. When the receiving set is located circuit of the receiving set. 4

It is a further object oi the present invention to provide a static eliminator in the form of a resistor which is of novel but simple construction.

It is an additional on to provide a static eliminator companying drawing, in

Figure 1 is a central longitudinal sectional view through adual resistor according to the present invention;

Figure 2 is a cross sectional view on the secn line 22 of and symmetrical constructions of the pile-ups in both sides 01' the power line;

showing .the ar- Flgure 4 is a central longitudinal sectional view through a single line resistor, the same .being 2 intended for introduction into the antenna circuit 0! a radio receiving set;

Figure 5 is across sectional view on the section line 5-! of Figure 4; and

Figure 6 is a circuit diagram showing the. re-

Male prongs I 01' the easing and female prongs |5 |5 through the top l2,

cesses in the top I2.

As shown in Figure 3 the dual resistor 01 the present invention may be plugged into a socket l8 mounted in a wall l1 and a plug l8, having attached thereto a cord I 9 extending to the radio receiving set (not shown), may then be plugged into the dual resistor. 7

An important part of the manner structed and assembled.

stratified form on one iaceiwith a suitable metallic foil, such as tin or a suitable alloy, which is cemented thereto. When these strips are placed in the container Hi the arrangement is such that the in Figure 2. That is with the planes of the folds extending longitudinally of the container. The folded strips 19 at opposite sides of the partition l3 form each end of both pile-ups, abutting at one end the male prongs i4 and at the other end abutting the female prongs I5. From this arrangement it will be apparent that there is contact resistance along the planes of juncture of the contiguous strips l9 and 20.

In the modification illustrated in Figures 4-5, the resistor strips -26 are arranged in a single pile-up in a cartridge or container 21. Both ends 2829 of the container are removable,'and the former mentioned male and female prongsltl are replaced by conductors .30 and 30 which extend to plates 32 and 33 respectively. on the inner faces of said ends.

Figure 6 shows the resistor of the present invention in circuit with an antenna 34 and a capacitor 35. The static and interference oscillations from other than radio communication sources are usually aperiodic, that is of no definite frequency and they can be tuned out with this circuit.

It will be obvious shape, and relative arrangement of the various parts may be made without departing from the spirit of the invention as defined by the appended claims.

I claim:

I. In a resistor for reducing static interference in radio receiving sets, a hollow holder, a pinrality of resistance units therein each comprising a narrow pleated foil ribbon arranged seriatim, alternate units being mutually disposed at right angles to each other and in edge-to-face contact.

2. In a resistor for reducing static interference, in radio receiving sets, a hollow casing, a partitlon dividing said casing into longitudinal halves, a plurality of resistance units therein each comp in seriatim in each half of the casing, alternate units being positioned at right face contact.

3. In a resistor in radio receiving sets, a hollow holder, at plurality of resistance units arranged seriatim in the holder, each unit comprising a loosely folded strip of laminated material, one of said laminathat changes in the sizes,

a narrow pleated foil ribbon arranged in angles and in edge-tofor reducing static interference semi-cylindrical .sistance unit comprising a tlons being a metallic foil, the alternate units being mutually at right angles to the adjacent units and in edge-to-face contact therewith.

In a resistor for reducing static interference in radio receiving sets, a hollow holder, a plurality of resistance units arranged seriatim in the holder, each unit comprising a folded laminated section of foil coated paper, the alternate units being mutually at right angles to the adjnltgnt units and in edge-to-faoe contact therew 5. In a resistor for reducing static interference in radio receiving sets, a cylindrical casing, a partition dividing said casing longitudinally into sections, a plurality of resistance units arranged seriatim in each section, each reloosely folded laminated foil element, alternate resistance units being positioned longitudinally and other intermediate resistance units being positioned radially of said casing the last mentioned units being in edge-to-edge contact with the faces of adjacent first mentioned units.

6. In a resistor for reducing static interference in radio signal receiving sets, the combination with a hollow casing having circuit terminals at its ends, of a series of resistance units each composed of laminated and pleated foil strips loosely folded and extending with their pleats crosswise of the casing and in spaced relation in the casing, those at the ends contacting said terminals, other similar formed units extending with their folds disposed longitudinally of the casing and interposed between the first mentioned units and corntacting them edgewise.

DARNELL ASBERY DANCE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 497,366 Wright May 16, 1893 528,893 Shaw Nov. 6, 1894 1,013,157 Hadaway Jan. 2, 1912' 1,632,089 Marbury June 14, 1927 2,015,209 Whiteside Sept. 24, 1935

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