US1873605A - Insulator - Google Patents

Description

W. D. KYLE Aug. 23, 1932.

INSULATOR Filed Aug. 30, 1930 Mil' Patented Aug. 23, 1932- UNITED STATES PAIENI OFFICE WILLIAM I). or MILWAUKEE WISCONSIN,` AssIeNoR To LINE MATERIAL com- PANY, or MILWAUKEE, wIscoNsm,fA CORPORATION or WISCONSIN ing the power lines and at the same time itk u establishes a connection to the conductors lof cated by. the contractoron the side of the building and extending yinto the house. kThe incoming 'power wire is extended through an eye or perforation in an insulator or is wound around a groove in the insulator, and the spanis drawn tight. The end of the wire is then bent back and twisted about the main pfart of the span wire to hold `the same tighty against the head of the insulator. A connec- 25 tion is then made between the span conductor and the wire extending along the side of the house. Heretofore,' it has been necessary to solder the connection in order to secure asat-` isfactory joint having a low electrical resist- $0, ance. It is a particular object of the present invention to provide an insulator adapted for deadending a line wire, wherein the insulator is provided with a terminal whereby the desired connections may be made without the necessity of soldering the connection.v While the insulator of the present invention is particularly useful for dead ending la line wire, it is also capable ofother uses and I do not wish to be limited to any particular 40 use to which my insulator may be put. f .In-my above referred to application I show a secondary rack which is provided with an insulator. of the kind having a terminal member mounted therein for facilitating the establishment of the electrical connections between a pairk of wires, Such as a line wire and a drop wire. In the present application I- show another form of insulator for accomlisfhing the same end. The insulatorsy in GQ" @5% 21,6 generally made ofkrangible INsULA'roR application mea August 3o, 1930. senin Nay-178.1594. V

insulation, preferably porcelain, although the invention is not limited tothe use of suchf material. In thepresent form'of my invention I make my insulator yin'ajsubstantially spool-like form, said insulator having apair of disc-like projections at its opposite end.y The portion ofthe insulator between the disc-r like projections is rounded .for receiving theA wirev to be tied. An additional disc is formed integrally with they insulator and is spaced from and parallel to one of thediscs of the spool-like body portion. This last mentioned disc is preferablymade of a somewhat larger diameter than the diameter 'of the otherr discs and the space between the twolast mentioned discs kprovides a `place vfor /Inounting a1? corr-` nectoror the like.` In .order tofacilitate the mounting of a terminalmember upon' the inl sulator this portion of the insulator is prefer` ably made of a squarefcross section whereby the Contact 'structureA may comprisea three-l sided strap which is vclamped around the square rsection by means of a single bolt.

Contact blocks maybe mounted upon one or` more sides of this three-sided squarel for receiving the ends oik the conductorsthat are. to be electrically connected together.

The insulator is formed with a longitudinally extending opening fory facilitating the j mounting of the same upon a secondaryrack. This opening may be made circular to permit a turningy of the insulator upon the shaft/'of the secondaryrack, or it maybe made Vcfa square or other polygonal shape whereby the insulator is prevented from turning with reference to the mounting shaft,y a

In one embodiment of my invention the'` central opening ormounting the insulator is V'made circular and one ofthe outer'dis'cs ofn the insulator is 'provided with a slot into' which one of the arms of the secondary rack fits forpreventing rotation of the linsulator upon the secondary rack. I prefer `to locate this slot in the disc that is of an enlarged diameter. The terminal is mounted upon the spool side of this disc or lange,'and since this disc or flange is of anenlarged diameter theU terminal' does not eXtendybeyond the Abody yof the insulator. The body of the insulatory therefore prevents laccidental contact of the terminal block with other live or grounded parts, and at the same time it permits ready access to the terminal member for making or severing connections between the conductors. Since the terminal member is located within the insulator, that is the flange-like members extend beyond the terminal, and it is not possible for the terminal to touch other parts it is not necessary to tape the connection in order to guard against the swinging of the connection into contact with the building or with other grounded or live parts.

One of the advantages that my present invention has in common with the invention of my above referred to application, is that it permits the power company to disconnect the line to the consumer outside of the building in a very efficient and simple manner.

Now, in order to acquaint those skilled in the art with the manner of constructing and using a device according to my invention, I shall describe, in connection with the accompanying drawing forming a part of this speciication, an insulator embodying the present invention together with the method of using the same.

In the drawing:

Figure 1 is a side view of an insulator constructed in accordance with my invention;

Figure 2 is a sectional view of the insulator shown in Figure 1, said view being taken along the line 2 2 of Figure 1 and looking in the direction of the arrow;

Figure 3 is an end view of a modified form of insulator, said view also showing, in fragmentary form, the manner of mounting the same upon a secondary rack; and

Figure 4 is an end view of the insulator shown in Figure 3.

Reference may now be had more particularly to the insulator shown in Figures 1 and 2. The insulator 1 is made of frangible insulation preferably, although not necessarily, material such as porcelain or the like, and all of the edges of the insulator are preferably well rounded, especially the edges around which a conductor may extend. The insulator comprises a spool portion 2 which merges into the side portions 3 and 4. The side portions 3 and 4 constitute extended discs or flanges. The disc or flange portion of the insulator, as well as thespool portion thereof, are of circular cross section. An extended circular disc 8 of somewhat larger diameter than the disc 3 is formed integrally with the insulator and spaced from the disc portion 4 thereof. The disc member 8 is connected with the rest of the body of the insulator by means of a portion 10 of a square or other polygonal shape, this portion being formed integrally with the rest of the insulator. The insulator is formed with a central opening extending longitudinally of the spool member 2, said opening being protangle. The outer legs 19 and 2O of the frame" member 18 may be slipped over the outer side of the rectangular portion 1() of the insulator and may be securely mounted in place by means of a single bolt 22 which may be passed through openings in the two legs 19 and 20. This strap is preferabl made of copper or other material of good e ectrical conductivity, although this may be dispensed with wit-hout departing from the spirit of the present invention. Connectors 25, 26 and 27 are mounted upon the three sides of the strap 18. These connectors may be of any preferred construction and as shown comprise merely a copper block having two openings 29 extending therethrough for receiving the bared ends of conductors that are to be electrically connected together, and are provided with screws 30-30 for holding the conductors in the grooves 29 in firm engagement with the body of the connector. Any preferred form of connector may be used. In a construction wherei in the strap 18 is made of copper or other material of high electrical conductivity the two bared ends of the conductors that are to be electrically connected together may be extended into openings 29 in different ones of the connectors 25, 26 and 2T, whereas if the strap is made of material which does not have a high electrical conductivity then the two ends of the conductors that are to be joined together are extended into the openings 29 of the same connector block 25, 26 or 27.

The insulator 1 may be mounted upon a secondary rack of any approved construction, although it may be mounted in any other manner that may be desired. ondary rack for use in connection with my improved insulator is shown in my Patent No. 1,524,141, issued January 27. 1925. A portion of the rack is shown, diagrammatically, in Figure 1. The rack comprises a metallic base 34 which may be of any approved construction and which is provided with a number of upstanding arms of which two, indicated at 31 and 32, are shown in Figure 1. The insulator is mounted between the arms 31 and 32 by mea-ns of a shaft 33 which extends through openings in the arms 31 and 32 and through the opening 15 in the insulator. This shaft extends through similar openings in other arms mounted upon the same base 34 and may support other insula,

tors similar to the insulator 1.

In Figure 3 I have shown a secondary rack upon which is mounted an insulator of'a construction diifering somewhat from the in- A suitable sec- IOC - (Masas:

sulator shown in Figures 1 and 2. Inl so far as this insulator is the same as the one previousl described similar reference numerals have en used to indicate similar -parts. This insulator differs from the one previously described in that here the flange or discshaped end 4', which corresponds to the portion 4 of Figure 1, is of a diameter equal to the diameter of the flange or disc-like end 3. In addition, the disc or flange member 8 is provided with a slot orfrecessffO which overlies the arm 31. The slot 40 straddles the leg 31 of the secondary rack and thus holds the insulator against turning. This insulator is provided with a connector of a construction such as has been described in connection with the insulator shown in Figure 1. In this case, as in the previous case, the connector is mounted in the groove between the flange or barrier 8 and the flange or barrier 4. This groove, in the present instance, is of such a depth that the connector lies substantially entirely within the groove with none of the connector parts extending beyond the flange or barrier 4. In the structure shown in Figure 3 it is possible to have a more pronounced or deeper curvature at the spool portion 2 due to the fact that the section 8 now overlaps the leg of the rack and accordingly gives a little more room to work in and obtain the desired proportions ofthe porcelain. The. higher barrier 4 of this form of insulator as compared with barrier 4 of the insulator shown in Figure 1 is an additional advantage.

In compliance with the requirements of the patent statutes I have herein shown and described a few preferred embodiments of my invention. It is, however, to' be understood that the invention is not limited to the specific constructions herein shown, nor to the specific use to which they may be put, both of the above being shown and described merely for illustrative purposes.

What I consider new and desire to secure by Letters Patent is:

1. An insulator comprising a pair of parallel disc-like members of insulation joined by a central portion extending'between them, and a terminal member secured to the central portion and extending outwardly of the central portion by an amount less than the distance from the central portion to the periphery of the outer disc member.

2. An insulator comprising a spool ofv insulating material, said spool having a peripheral groove for holding a wire on the insulator when the same is looped around the groove, said insulator having a second groove, and a terminal mounted in the second groove and substantially entirely within the confines of the sides of the second mentioned groove.

3. An insulator comprising a spool of insulating material, said spool having a central longitudinal opening for mounting the same and having v.a kperipheral .groove for holding a wire ou theinsulator `when the same is looped around the groove, said insu-y 4. kAn `insulator comprising a spool of insulat'ing material, said spool having ka central opening for kmounting the insulator and hav- -ing a peripheral groove for holding va wire on 'thev insulator when Vthe same is looped.l

around the groove, said insulator havin ay second groove, and a terminal mem r mounted in the second groove and substantially entirely within the same, the grooves being defined by flange-like extensions with. the flange on the outer side of the second groove of a larger radius than the other flanges.

5. A secondary rack construction comprising a supporting base, a pair of parallel arms extending therefrom, and a combined insu-v lator and terminal non-rotatably mounted between said arms, saidcombined insulator andl terminal comprising a spool of frangible insulating material having a groove formed therein for the reception' of a. conductor, a

second groove formed therein and a terminal member carried in said second groove.

6. A secondary rack construction comprising a supporting base, a pair of parallel arms extending therefrom, and a combined insulator and terminal non-rotatably mounted between said arms, said combined insulator and terminal comprising a spool of frangible insulating material having a groove formed therein for the reception of a conductor, a second groove formed therein, a terminal member carried in said second groove, and a disc-like piece of insulation defining the outer side of the groove and spacing the terminal from the adjacent arm of the rack.

7. A secondary rackconstruction comprising a supporting base, a pair of parallel arms extending therefrom, and a combined insulator and terminal non-rotatably mounted between said arms, said combined insulator and terminal comprising a spool of frangible insulating material having a groove formed therein for the reception of a conductor, a second groove formed therein, a terminal member carried in said second groove, and a disc-like piece of insulation defining the outer side of the groove andspacing the terminal from the adjacent arm of the rack and having a formation on the outside thereof cooperating with the adjacent arm to prevent turning of the insulator on the rack.

8. An insulator having circular end flanges and a circular intermediate flange, a continuous smooth peripheral groove devoid of sharp edges and located between the intermediate flange and one of the end flanges, and

a second peripheral groove formed between the intermediate flange and the other end flange, said second groove being of a noncir cular shape. t kl 9. An insulator having circular end flanges and a circular intermediate flange, a continuous smooth peripheral groove devoid of sharp edUes and located between the int-ermediate flange and one of the end flanges, a second peripheral groove formed between the intermediate flange and the other end flange, said second groove being of a non-circular shape, and a terminal clamped in said second groove.

l0. An insulator comprising a unitary body of insulation having two parallel flanges with a. conductor receiving groove between them, a third flange parallel to the other flanges and spaced therefrom to define a terminal receiving groove, said insulator having a perforation extending longitudinally therethrough centrally of the flanges for receiving a mounting rod, and a preformed irregular configuration on the out- Tside of an outer flange for cooperating with a rod support to prevent turning of the insulator.

In Witness whereof, I hereunto subscribe my name this 27 da of August, 1930.

ILLIAM D. KYLE.

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