US2643283A - Insulator tie - Google Patents

Description

June 23, 1953 E. c. CARLSON 2,643,283

' INSULATOR TIE Filed Feb. 17, 1948 2 Sheets-Sheet 1 lNVEN EDWARD C. C LSON ATTORNEY E. C. CARLSON INSULATOR TIE June 23, 1953 2 Sheets-Sheet 2 Filed Feb. 17, 1948 INVENTOR I EDWARD c. CARLSON flmwk ATTORNEY Patented June 23, 1953 OFFICE INSULA'IOR TIE EdwardC. Carlson, Chicago,'Ill., assignor to Harld1S. Sines, Chicago; Ill.

Application'February 17, 1948, Serial No. 8,8511

2,=Claims. 1:

My invention contemplates as its objectand provides .an improved tie which cooperates with a line conductor and an. insulator therefor effectively. to secure'the conductor inappropriate non-chafing and substantially non-vibratory, relation to the insulator while at the same time maintaining in electrical connection with the conductor an appurtenantdevioe which by virtue of said tie isphysically supported quite independently of the conductor bythe insulator, to the end that theweight of such appurtenant device shall not cause conductor disruption and/or radio interference and/or other impairments of power transmission service.

An appurtenant device of the class contemplated by; the foregoingparagraph may be a capacitor, a lightning arrester, a hot line clamp, a take-off connector or any other instrumentality of significant mass which requires physical support as well as. electrical conneotionwith the conductor. Such appurtenant devices, as heretofore associated with wire-tied'line conductors, have beenresponsible for a large number and variety ofservioe'impairments'such as conductor fatigue, conductor abrasion; looseningof the 'tie wires, burning of conductor or tie Wires, etc.', brought about by" mechanical strains imposed upon the conductors by such devices.

Other objects, features and advantages'of'my invention will appear'from the detailed description to follow which makes reference to the accompanying two sheets of drawings wherein Figure-1 is aetop planwiew depicting'apre ferred form of myimproved tieand other instrumentalities with which it cooperates in service;

Figure 2 is aside elevational view-of the same;

Figure 3 is an isolatedplan view of the wish bone element of the'tie as such element appears before installation;

Figure 4 is a sectional view which may be re-- garded as. taken in'the'horizontal plane-0f the line 4-4 of Figure 2 and looking in the-direction indicated by the arrows;

Figure 5 isa top-planiviewof a modified form ofmy improved tie and other instrumentalities:

with which it cooperates in service;

Figure ,6 is a side elevational view of'the same; Figure '7 is a sectional view which may beregarded' as taken in'thehorizontal' plane of the line 'l'lof Figure 6 and looking in:the'direction indicated'by the arrows; and

taken. in the verticalplane of thaline. 8-8501 Figure-5 and lookingin the direction indicated by the arrows.

Similar characters of reference indicate sim ilar parts throughout the several views.

Referring first to Figures 1 to 4, both inclusive, reference character A denotes a conventional -insulator, of porcelain or other dielectric, which for the purposes of the present specification may be regarded as representative of the Various types of insulators with which the tie of my present'inventionmay be associated. The particular insulator chosen for purposes of illustration comprises a knob-like circular top B in the upper surface of which is formed a diametrically extending groove 0. Theinsulatorwill be so mounted on a cross arm orother support that groove C extends-inthedirection of the conductor with which the insulator is associated. Encircling' the insulator. immediately beneath the knob-like top B is the annular groove D. In transverse section, the wall of groove Dr preferably isarcuate and the wall of groove C approximately so. At E isindicatedthe line conductor with which insulator A is associated.

At ID in Figure 2 i-s-indicatedan electricity conducting tensionmember which may be presumed; to carry in suspension at its lower end and to be electrically connected with an appurtenant. device-(not shown) such as,.for example, a capacitor, lightning arrester or the like. As will presently appear, my improved tie, which comprises an electricity-conducting supporting arm II to which I shall makefurther reference, at all times .keepsvthe tension member 10, and the appurtenant device suspended thereby, in electrical connection with line conductor E while shielding such line conductor from all strain imposedupon the tie bythe weights of such electricity-conducting tension member ID and such appurtenant device. The upper end of member ID conveniently is attached to supporting arm II by a conventional or other connector l2 which desirablyis, of the nut actuated clamp.

type.

Supporting arm ll constitutes one'end of an integral hard-drawnpreformed wire which also comprises an" eye loop 13, a helix M to embrace and for' some distance co-extend with line con-- is another integral hard-drawn pre-formed wire portion I8 joining eye loop I6 and helix II. The third of such constituents is a so-called wishbone consisting of a piece of wire having its ends twisted together at I9 and conformed between its twisted ends to provide the generally U-shaped portion 20 having the eyes 2 l-2I presented by the extremities of its generally parallel portions 22-22. r

In applying the tie comprising the constituents just described, a lineman proceeds as follows:

" The helices I4 and ll of the two hard-drawn pre-formed wires are spiraled upon the line conductor E (or any armor rods or the like which may be on the conductor) firmly to engage the latter on opposite sides of the insulator A, the two reach portions I5 and I8 of such wires are brought into the insulator top groove 0, and the two eye loops I3 and I6 are caused to lie in the annular groove D of the insulator; the two eye loops lying in groove D adjacent diametrically opposite portions of the insulator and occupying substantially vertical planes. Then the generally parallel portions 22-22 of the wishbone are threaded through eye loops I3 and I6 and the extremities of the portions 22-22 of the wishbone are twisted together at 23 (conveniently with a twisting bar extended through eyes 2I-2I) to cause the applied wishbone tightly to embrace the upper portion of the insulator A and firmly hold the eye loops I3 and I6 vertically disposed in the insulator groove D, and to provide a strong outwardly extending arm. Then, because of the hard-drawn preformed character of the wires which comprise such eye loops. I3 and Il,the line conductor E stands attached to the insulator A while being held out of contact with it, with vibration of the line conductor E in the region of the insulator A being effectively dampened to a minimum by the helices I4 and I'I. Moreover, and. very important, when the electricity-conducting. tension member I subsequently is attached to supporting arm II, all of the weight of the tension member II] and any appurtenant device suspended by it is thrown upon the insulator through loop eye I3, and not any strain resultant from the carrying of such weight is thrown upon the line conductor. If desired, the loop eye I6 may be provided with a supporting arm similar to and for the same purpose as the supporting arm II which emanates from loop eye I3.

That modified form of my multiple purpose tie which is depicted in Figures to 8, both inclusive, comprises two hard-drawn preformed wire members, a wishbone member and a flexible conducting member, interposed between the line conductor and the wishbone element when the latter is installed. In this modification each hard-drawn preformed wire member consists of a helix 30, a terminal loop eye 3! and a reach portion 32 integrally joining portions and 3l. In other words, each of these members is substantially identical with the hard-drawn preformed wire member of Figures 1 to 4 which comprises loop eye III, helix I1 and reach portion I8. The wishbone element of Figures 5 to 8 may be substantially identical with the corresponding element of the preceding figures and bears the same reference numerals. The flexible conducting member desirably is in the form of a metallic tape or ribbon 33 applied directly to the conductor or any armor rods or the like which may-exist on the conductor.

In effecting the tie of Figures 5 to 8, a lineman Pas proceeds as follows: The intermediate portion of metallic tape or ribbon 33 is spiralled upon that portion of line conductor E which is to overlie insulator A, the tape or ribbon being left with liberal end portions extending away from conductor E. The helices 30-30 are spiralled upon conductor E firmly to engage the latter on opposite sides of insulator A. The two reach portions 32-32 are brought into the insulator top groove 0, and the two eye loops 3 I-3I are caused to lie in annular groove D of the insulator adjacent diametrically opposite portions of the in- 'sulator. Then the portions 22-22 of the wishbone element are threaded through the eye loops 3 [-3 I. Then the extremities of the tape or ribbon 33 are spiralled around the portions 22-22 of the wishbone element, in regions lying between the eye loops 3l-3I and the extremities of such portions 22-22. Then the extremities of such portions 22-22 are twisted together as at 23 so as to provide an outwardly extending arm and to cause the applied wish-bone tightly to embrace the upper portion of insulator A, tightly clamp and hold the ends of tape or ribbon between portions 22-22 and the insulator, and firmly hold the eye loops 3 I-B! vertically disposed in insulator groove D.

In this instance, the conducting tension member IB is attached by a clamp type connector I2 tothe arm provided by the ends of the Wishbone element which have been twisted together at 23. By virtue of this, and the assembly of parts described in the preceding paragraph, all Weight of the tension member Ill, and any appurtenant device suspended by it, is thrown upon insulator A through the wishbone element and the loop eyes 3I-3l, not any strain resultant from the carrying of such weight being thrown upon line conductor E, while a dependable electrical connection between such appurtenant device and the line conductor is afforded through conducting tension member II], connector I2, the wishbone element and the flexible tape or ribbon 33 and armor rods or the like if any such happen to be on the conductor.

Having thus illustrated and described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In combination, an insulator having an exterior annular groove near one end, a line conductor extending across the end of the insulator, a binding element lying in the groove and embracing the insulator, ties connecting the binding element and regions of the line con-ductor at opposite sides of the insulator, and an electricity-conducting supporting member connected directly to the binding element at the insulator independently of the line conductor, one of said ties having a loop extending about the binding element, and the electricity-conducting supporting member being integral with the loop.

2. For use with an insulator having an eX- terior annular groove near one end, a line conductor extending across the end of the insulator and a binding element embracing the insulator in said groove, the combination comprising ties for connecting the binding element and regions of the line conductor at opposite sides of the insulator, and an electricity-conducting supporting member for connection directly to the binding element at the insulator independently of the line conductor, at least one of said ties having a loop therein for encompassing the binding element, and the electricity-conducting supporting 5 6 member being integral with the loop on said one FOREIGN PATENTS of the ties' Number Country Date EDWARD CARLSON- 339,792 Germany Aug. 10, 1921 514,834 Germany Dec. 18, 1930 References Cited in the file of this patent 5 528,777 France Aug 25, 1921 UNITED STATES PATENTS Number Name Date OTHER REFERENCES 1,453,173 Pairard Apr. 24, 1923 Copperweid Grip-Flex 45, circular published 2,421,286 Pyle May 27, 1947 by the Copperweid Steel Co., Glassport, Pa.,

2,438,233 Sines Mar. 23, 1948 10 September 1945, 4pages.

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