US2345404A

US2345404A - Reinforced insulator pin

Info

Publication number: US2345404A
Application number: US454383A
Authority: US
Inventors: Edward A Mack
Original assignee: OLIVER IRON AND STEEL CORP
Current assignee: OLIVER IRON AND STEEL Corp
Priority date: 1942-08-11
Filing date: 1942-08-11
Publication date: 1944-03-28
Anticipated expiration: 1961-03-28

Description

March 28, 1944. E. A. MACK 2,345,404

REINFORCED INSULATOR PIN Filed Aug. 11, 1942 2 Sheets-Sheet 1 INVENTOR.

Edward 4. ad?

March 28, 1944. E A. MACK REINFORCED INSULATOR FIN Filed Aug. 11, 1942 2 Sheets-Sheet INVENTOR. L a/Way Q. 7%

Patented Mar. 28, 1944 REINFORCED INSULATOBPIN Edward A. Mack, Huntington, W. Va., assignor to-liver Iron and Steel Corporation, Allegheny County, Pa., acorporation of Pennsylvania Application August 11, 1942, Serial'No. 454,383

6 Claims.

This invention relates to insulator-mounting assemblies of the type including a pin mounted upon a cross arm and projecting upwardly toreceive an internally socketed insulator for carrying electrical conductor wires.

One object of the invention :is to provide a novel form of bracing for an insulator pin to enable such a pin adequately to resist the stresses imposed upon it in service by a conductor that is carried by an insulator mountedon the pin.

Another object is the provision of an assembly wherein the pin and bracing are in a novel 'way integrated into a unitary structure that is arranged to provide adequate bracing for the pin, and that is capable of simple :and inexpensive manufacture, and facilitated service installation.

In the accompanyingdrawings.

Fig. I is a side elevation .of my novel integrated assembly of insulator pin and .the positioning and bracing structure therefor, showing theassembly on the cross arm ofapole.

Fig. II is a view showing theinsulator pin gpositioning and bracing structure in plan and the insulator pin integrated therewith in cross section.

Fi III is a. similar view of the insulator positioning and bracing structure, butomittingthe insulator pin and the -means for integrating it with thesaid structure.

Fig. IV is a side elevation of the insulatorpin positioning and bracing structure, omitting the insulator pin and the means integrating it with the positioning and bracing structure.

Fig. V is a front elevation of the structure shown in Fig. IV.

Describing the drawings in detail, the numeral 1 indicates a cross arm of standard type in poleline use. The bracing for the insulator pin, such a pin being designated by reference numeral 2, is a generally triangular frame. The frame has a bottom arm 3 in the form of a base plate containing a centrally positioned pin-receiving hole 4, and

side arms

5 and 6 that extend convergently upward from the bottom arm or plate 3. In order that

arms

5 and 6 embracingly may engage insulator pin 2 projected through the pin hole 4, they extend convergently upward and inward to points sufficiently close to provide engagement upon opposite sides of the pin.

The uppermost portion of

arms

5 and 6 and the flanges 5a and 6a extended upwardly from the upper margins of the arms are transversely formed to conform to the surface configuration of the pin and to provide a pin-receiving socket space 1 between them. The base 3 of the positioning and bracing structure is upwardly bowed transversely of the :base between the edges .31; and -32) of the base.

The pin positioning ,and bracing structure is composed of a single piece pf material,, desir,ably mild steel, punched and pressed to its desired form. When the insulator pin is integrated with its positioning and bracing structure in suitable manner such as that shown in the .drawingaand to be described, the assembly -is therefore .one of extremesimplicityand sturdiness.

In making the integrated assembly shown in the drawings, the insulator pin .2 is ,passed through hole 4 in the base of the positioningand bracing structure, and through the socket Ibetween flanges 5a and ,6a .of the arms 5 and .6. Welds 8 and Bare then made, firmlyto integrate the insulator pin in the assembly. In .the weld 8, the opposed edges 10 bordering the ,pin-receiving socket 1 provide anchorage .for ,the weld metal which lies in the gaps H between them, and integrates the insulator pin ,with its ,positioning and bracing structure .at ,two points circumferentially .of the pin. The weld .in both peripherally spaced regions of the insulator .pin being elongate axially of the ,pin and serving to bond together the two flanges :5a and -6a .of the side arms as well as to bond the insulator pin to the flanges, the integration ,may beemade .with great facility and effectiveness. -W,el d .--9 integrates theinsulator pin 2--with the base 3 .of the positioning and bracingstructure andtthe edges of the hole 3 through which .the pin ,extends. This weld 9, by firmly engaging the structure relieves the weld 8 of forces tending to break it which might result were the pin to remain loose in the hole 4, and supplements the weld 8 in preventing axial shifting of the pin. The welded integration of the triangular positioning and bracing structure at both its base and its apex with the insulator pin, also causes the pin itself to reinforce that structure against distortion from its triangular form.

Insulator pin 2 extends upwardly beyond flanges 5a and 6a of th positioning and bracing structure, and in its upward extension may carry insulator-engaging means such as the threaded lead thimble l2 shown in Fig. I. In its extension l3 downwardly beyond base 3 insulator pin 2 is threaded, and may as shown carry a washer I 4 and nut I5 for clamping engagement of the assembly with the cross arm I of a pole.

The assembly may be mounted on the cross arm I, as indicated in Fig. I, so that insulator and the cross arm is clamped between washer and nut 14 and IS on the pin shank and the base 3 of the frame structure. In mounting the assembly, the upwardly bowed contour of its base 3 permits the bracing structure to find a seat on the cross arm at the edges 3a and 3b on the opposite ends of the base, so that the assembly seats firmly in spite of irregularities in the surface of the cross arm. When so mounted the assembly resists turning movement of the insulator pin in all directions under the pull of a conductor wire passed around or attached to an insulator carried by the pin, because the triangular structure, or bracing element embracingly engages the insulator pin around the periphery of the pin, and because the integrated assembly bears by means of a base of relatively great area against th structure on which the assembly is mounted. Looseness of the insulator pin in the hole through the cross arm is thus wholly compensated. Also the triangular arrangement of the bracing frame and its welded integration gives an integrated structure of strength adequat to sustain severe stresses. The assembly, because of its bracing, has particularly great utility in locations in which a conductor wire is carried around a corner, so that the conductor wire pulls on the insulator pin from two relatively angular directions.

Substantial advantages of the described assembly thus derive both from the form of the bracing element and from its welded integration with the insulator pin. The advantages of strength and firm mounting have been described. Other advantages are to be found in its simplicity, in the ease "with which it is manufactured, and in the fact that it is susceptible of complete factory fabrication ready for mounting and service. As will have been seen, the assembly may be quickly and easily mounted in th field.

It is to be understood that the physical embodiment of my invention herein shown and described is susceptible of modification in various particulars without departing from the principles of the invention, and the scope of my invention is therefore to be restricted only by limitations contained in the claims appended hereto.

I claim as my invention:

1. An integrated insulator pin assembly including an insulator pin, a one-piece bracing element having a pin-embracing base and arms extended convergently upward from said base and shaped adjacent their upper ends cooperatively to form a pin-receiving socket space approximately surrounding the insulator pin, and means integrating the said insulator pin with said bracing element.

2. An integrated insulator pin assembly including an insulator pin, a bracing element having a pin-embracing base and arms extended convergently upward fromsaid base cooperatively to form adjacent their upper ends a pinreceiving socket space, and means rigidly interconnecting the insulator pin with the said bracing structure at the pin-embracing base and at the pin-receiving socket thereof.

3. An integrated insulator pin assembly including a metallic insulator pin, a metallic bracing element having a pin-embracing base and arms extended convergently upward from said base and shaped adjacent their upper ends cooperatively to form a pin-receiving structure approximately surrounding the insulator pin, and bonding metal integrating the said insulator pin with both arms of the said bracing element at the pin-receiving structure formed thereby.

4. An integrated insulator pin assembly including a metallic insulator pin, a metallic bracing element having a pin-embracing base and arms extended convergently upward from said base cooperatively to form adjacent their upper ends a pin-receiving structure, bonding metal integrating the said insulator pin with both arms of the said bracing element at the pin-receiving structure formed thereby, and bonding metal in tegrating the insulator pin with the pin-embracing base of the bracing element.

5. A triangular bracing element for an insulator pin including a base plate perforate to embrace an insulator pin passed therethrough, arms extended convergently upward from said base, and extensions on said arms adjacent the upper ends thereof arranged to present opposed surfaces providing a pin-receiving socket approximately in line with the perforation in the base of the bracing element. I

6. A triangular bracing element for an insulator pin including as a one-piece structure a pin-embracing base, arms extended convergently upward from said base, and flanges formed from the structure of said arms and extended axially of the bracing element to provide opposed extended surfaces forming a pin-receiving socket.

EDWARD A. MACK.