US1821221A

US1821221A - Insulator and terminal

Info

Publication number: US1821221A
Application number: US396248A
Authority: US
Inventors: William D Kyle
Original assignee: Line Material Co
Current assignee: Line Material Co
Priority date: 1929-09-30
Filing date: 1929-09-30
Publication date: 1931-09-01
Anticipated expiration: 1948-09-01

Description

Sept. 1, 1931. w. D. KYLE 1,821,221

INSULATOR AND TERMINAL Filed Sept. 30. 1929 Patented Sept. 1, 1931 UNITED STATES PATENT omen WILLIAM -n. KYLE; or MILWAUKEE, wrsconsm, assronon T mm MATERIAL comrnnxor'mwauxnn, WISCONSIN, n oonrom'rron or DELAWARE INSULATORIAND TERMINAL- I situation fled September 80,1. 328. Seria1no.396,24. v i

This invention relates to insulators in (gen eral and more. particularly .to secon ary rack insulators and it is one of the objects of this invention to provide an improved secondary rack construction especially useful for dead ending drop wires,'that is'to take the strain of a span from a pole or line to the side of a house where a drop from the power line to the customers meter is required, although the invention is not limited to such fuse.

In electric for the wiring contractor to furnish the wire connections from the side of the building into the house The power companyextends a connection to thelhouse frorn the pole carrying the power lines and at thesame time establishes a connection to the conductors locatedby the contractor 'onthe side of the building and extending into the house. A secondar rack is mounted on the side of the buil ing adjacent the-inlet provided by -the contractor. This rack comprises merely a base upon whichis mounted a pluralityof spaced" insulators, one for each line conductor.v The incoming power wire from the power line is wound around a groove in the insulator and the span is drawn tight. The end of the wire is then twisted about the main part'of the span wire to hold the same tightly in place against the insulator and a connection is made between the span conductor and the wire extendin along the side and into the house. Hereto ore it has been necessary to make a 'tapconnection to the span wire and therefore it was necessary to solder the connection in order-to secure a satisfactor joint havingalowelectrical resisttis a particular object ofthe pres Y ent invention to providea secondary rack whereon the insulators are; particularly "the desired connections may be made. The

end of the span wire and the end of the wire extending into the house are both cleaned wiring work it 1s customary rack;

of insulation and both extended into the terminal member. The two ends may 'thenbe clamped together or'the maybe separately clamped to the termina member.

In the embodiment of the invention herein illustrated'I provide an insulatorhaving a body portion of frangible insulation, preferably porcelain, although the invention is not limited to such an insulator. The terminal member, which may be of-an approved construction, may belembedded 'nthe porcelain insulation during the molding thereof or it may be inserted into a hole formed in the insulation and secured in place by a suitablecement'. The use of a terminal anchored on the insulator not only obviates the necessity for solding the connection but also, since the termina -'is rigidly-fixed, it does not require taping toguard against the swingin of the connection'into contact with the building orwith other grounded or live parts. I Another advantage of my invention'is that it permitsthe power company to disconnect the line to the consumer outside of the buildin in a very eflicient and simple manner.

he attainment of the above and further objects of the present invention will be a parent from the following specification ta en in conjunction with the accompanying drawings forming a part thereof. In the drawings:

Figure 1 is a diagrammatic illustration showing the manner in which'my racks are used a Figure 2 is a front view of my improved Figu-re3 is an endview thereof. r

Referencemaybe had first to Figures 2 and 3 showing the construction of my improved secondary rack.-A metallic base 1,- "which maybe of any approved construction'is provided with a number of upstanding arms 2,

3, 4, and 5. Insulators 6, are mounted between the upstanding arms by means of a square shaft 7. The insulators 6 have a central- .square hole extending therethrough through which the shaft passes. The shaft 7 extends through square holes in the arms 2 to 5 respectively and through the square holes in the insulators. A cotter pin or other suitable means is provided for preventing the inadvertent removal of the rod 7, from the arms. The insulator comprises a body portion of frangible insulating material suc as porcelain or the like and is provided with a central peripheral groove 15, around which formed in the insulator, being held in place a suitable porcelain cement or by lead.

b "l he stud 10 has a slot 11 formed lengthwise thereof and centrally of the stud. This slot is provided for receiving the ends of the conductors that are to be electrically connected to ether.

he stud portion 10 is screw threaded and a nut 12 is threaded thereon for tightening the ends of the wires within the slot together. It is understood that the'wires are first placed in the slot and then the nut 12 is placed on the shank and turned until it clamps the ends of the wires together.

Reference may now be had to Figure 1 showing one manner in which my improved secondary rack may be used. In this figure a pair of power wires 20 and 21 are supported on

insulators

22 and 23 upon the

arms

24 and 25 of a pole 26, in a manner well known in the art. A rack 27, of a construction similar to that shown in

Fi res

2 and 3, is mounted on the pole 26 within a short distance of the

cross arms

24 and 25. The insulators mounted on this rack do not need to have terminal members such as the terminals 9 embedded therein and these insulators may be rotatively mounted on a shaft such as 7 since it is not important that these insulators be held against rotation. A wire 29 is passed around the groove such as 15 in the insulator on the ack 27, with about two feet of wire extending beyond the insulator. The extending end of the wire is then bent around the main por: tion of the wire and the remaining end 30 is drawn up to the wire 21. The end of the wire 30 is suitably connected to the conductor 21. This connection is generally made by removing a portion of the insulation from the conductor 21 and by removing the insulation from the end of the conductor 30. The end of conductor 30, is then tightly bent around the conductor 21 a few times and the connection is then soldered and taped in the usual manner.

The wire 29, extends to a building indicated in general 35, to which service is to be extended. It is customary for the wiring contractor to furnish the wire connection from the side of the building into the house. The

connections extend in a conduit 36. A condoctor 38 extends outward from the conduit 36, through the usual fittings indicated at 39. It is customary for the wiring contractor to leave about two feet of wire 38 extending out of the fitting. It is to this wire and to a similar wire 40 that the power company establishes the connections. A bracket 45, which is of a construction such as is shown in Figures 2 and 3, is suitably secured to the side of. the house. The end of the conductor 29.is passed around the groove 15 in the upper insulator 6 on the bracket and the wire 29 is then drawn taut and the end of the wire is then bent several times around the span wire 29. The insulation at the end of the wire 29 is then removed and the end of this wire is passed through the slot 11 in the terminal member 9. The insulation from the end of the wire 38 .is likewise removed and the end of this wire is likewise passed throu h the same slot in the terminal member 9. T e nut 12 is then tightened so as to clamp the two ends of the wires within the slot tightly together. The connections from the conductor 20 are established in a similar manner.

While I have herein shown a terminal member consisting of a threaded stud or shank it is to be understood that the invention is not limited to the use of such a terminal member.

Any other preferred form of terminal member may be used if desired. It is also to be understood that I do not wish to be limited to the .precise method whereby the terminal member is secured to the insulator. While I sulator and held inplace either by the body of the insulator itself or by the use of a suitable cement or lead filler the invention is not limited to such connecting means. If desired a hole may be formed through the insulator and the terminal member bolted in lace by extending the same through the ho e, or it may be mounted in any other desired man-,

insulated drop wire, said rackcomprising a.

supporting base having a pair of upstandin arms, a rod non-rotatably mounted on sai arms, an insulator of frangible insulation non-rotatably mounted on sald rod, said insulator having a groove for holding an iIlSU", lated drop wire, and a terminal member embedded in the insulation and projecting outside thereof, said terminal member including a portion adapted to receive the end of the drop wire for establishing a connection thereto and including clamping means for clamping it in place.

2. A secondary rack construction comprising a supporting base, a pair of parallel arms extending therefrom, and a combined insulator and terminal non-rotatably mounted have shown the same as embedded in the inbetween said arms, said combined insulator and terminal comprising a spool of frangible insulating material having a peripheral groove formed therein for the reception of a conductor, and a terminal member embedded in the insulating material and extending outside thereof.

3. 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 combine-d insulator and terminal comprising a spool of frangible insulating material having a peripheral groove formed therein for the reception of a conductor, and a terminal member carried by said insulator and extending outwardly therefrom.

4. An insulator mechanism comprising a pair of parallel arms, and a combined insulator and terminal disposed between said arms comprising a body of insulating material having a conductor receiving portion thereon, means cooperating with said arms for restraining rotation of said body, and a terminal carried by said body at a point spaced from the conductor receiving portion.

5. A secondary rack construction comprising a metallic supporting base having a pair of arms extending therefrom, a combined insulator and terminal mounted between said arms, said insulator comprising a spool of insulating material having a peripheral groove formed therein for receiving an insu lated power conductor, said groove being provided with well rounded edges to prevent injury to insulation on the conductor, and a terminal member carried by said insulator and spaced from the groove and from the arms of the rack.

In witness whereof, I hereunto subscribe my name this 12th day of Sept, 1929.

' WILLIAM D. KYLE.