US3643009A

US3643009A - Post-mounted winged insulator arm assembly

Info

Publication number: US3643009A
Application number: US72453A
Authority: US
Inventors: Robert A Collister
Original assignee: SCOTT ENGINEERING Inc
Current assignee: SCOTT ENGINEERING Inc
Priority date: 1970-09-15
Filing date: 1970-09-15
Publication date: 1972-02-15
Anticipated expiration: 1989-02-15

Abstract

An insulator-mounting assembly having oppositely directed, upwardly angled arms of dielectric material, a two-part metallic mount for fixedly engaging and holding adjacent ends of said arms, one part of said mount being provided with portions adapted to fixedly engage the surface of a pole and to be bolted thereto for mounting said arms on said pole, a metallic insulatormounting bracket on the other end of each arm, said brackets being electrically spaced from the metallic mount, and a shorting bond wire connecting said brackets and, thereby, electrically connecting the insulators on said brackets for relaying the circuit and deenergizing the line wires connected to the insulators.

Description

United States Patent Collister [54] POST-MOUNTED WINGED INSU LATOR ARM ASSEMBLY [72] Inventor: Robert A. Collister, Temple City, Calif.

[73] Assignee: Scott Engineering, Inc., Los Angeles,

Calif.

[22] Filed: Sept. 15, 1970 [21] Appl. No.: 72,453

[52] US. CL ..l74/l49 R, 174/2, 174/45 R, 248/221 [51] Int. Cl ..H0lb l7/l4, HOZg 7/00 [58] FieldofSear-ch ..l74/2,6,40R, 45 R, 148, 174/149 R, 158 R, 163 R; 52/40, 649, 697, 72l;

. [56] References Cited UNITED STATES PATENTS 224,580 2/1880 Chinnock 174/45 R X 1,876,577 9/1932 Austin 2,056,366 10/1936 Richards et al ..174/45 R X [15] 3,643,009 Feb. 15,1972

OTHER PUBLICATIONS Columbia Products Co. advertisement entitled New Look in Pole Top Designs. Electrical World, Vol. 162, No. 18. Nov. 2, 1964, page 76.

Primary ExaminerLaramie E. Askin Attorney-Hyman Jackman [57] ABSTRACT An insulator-mounting assembly having oppositely directed, upwardly angled anns of dielectric material. a two-part metallic mount for fixedly engaging and holding adjacent ends of said arms, one part of said mount being provided with portions adapted to fixedly engage the surface of a pole and to be bolted thereto for mounting said arms on said pole, a metallic insulator-mounting bracket on the other end of each arm, said brackets being electrically spaced from the metallic mount, and a shorting bond wire connecting said brackets and, thereby, electrically connecting the insulators on said brackets for relaying the circuit and deenergizing the line wires connected to the insulators.

3 Claims, 4 Drawing Figures PAIENIEBFEB 15 I972 SHEET 1 [IF 2 INVENTOR. ROBERT A601 L I575? PATENIEBFEB 15 m2 SHEET 2' BF 2 POST-MOUNTED WINGED INSULATOR ARM ASSEMBLY BACKGROUND OF THE INVENTION 1. Field of the Invention For pole-mounting of power'and other electric current conducting lines.

2. Description of the Prior Art The common manner of mounting line wire insulators on poles, conventionally, comprises cross arms affixed to said poles and mounting spaced lines connected to insulators provided on said cross arms. A later development eliminates the cross arms and uses standoff brackets which directly carry the insulators and are affixed to the sides of the poles.

SUMMARY OF THE INVENTION The present winged insulator arm assembly comprises, generally, a two-part metallic mount adapted to be fixedly connected to a pole 11, two separate, end-abutted arms 12 preferably of solid wood extending oppositely angularly upswept from said mount 10, a metallic bracket 13 affixed to the outer end of each said wooden arm, each one of which mounts an insulator l4, and shorting bond wire electrically connecting said brackets.

An object of the present invention is to provide a winged insulator arm assembly of the character above generally described that is particularly characterized by two shorter lengths of wood that replaces the single and more expensive longer cross arm and which are arranged at upswept angles that drain moisture away from the insulators that are affixed to the outer ends of said length of wood.

Another object is to provide an insulator arm assembly that is characterized by strong long-wearing mounting means for said lengths of wood, whereby rigidity of said assembly is provided in a safe but inexpensive manner.

This invention also has for its objects to provide such means that are positive in operation, convenient in use, easily installed in a working position and easily disconnected therefrom, economical of manufacture, relatively simple, and of general superiority and serviceability.

The invention also comprises novel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description, which is based on the accompanying drawings. However, said drawings merely show, and the following specification merely describes one embodiment of the present invention, which is given by way of illustration or example only.

In the drawings, like reference characters designate similar parts in the several views.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a front elevational view of post-mounted winged insulator arm assembly according to the present invention, one of said arms being broken away.

FIG. 2 is a plan view as seen from the top of FIG. 1 with the insulator on the unbroken arm partly broken away.

FIG. 3 is an enlarged vertical sectional view as taken on the line 3-3 of FIG. 1.

FIG. 4 is a view of the rear face of a mounting plate of the assembly.

FIG. 5 is a cross-sectional view as taken on the plane of the line 55 of FIG. 4' the same showing the parts as assembled in FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENT The wooden arms 12 are preferably of rectangular cross section, one end face 16 of each arm being normal to length and the other end face 17 being at an angle to the length of each said arm. The arms, when their end faces 17 are abutted, as shown in FIG. 1, define an included angle of approximately 150. Said arms 12, when connected by their ends adjacent the faces 17 to the mount 10, having an upswept disposition with the ends adjacent the faces 16 above the ends connected to said mount.

The mount 10 comprises a base part 18 that, as by bolts 19, is adapted to be fixedly mounted, in a preferably vertical position, on the side of the pole l1, and a plate part 20 that, by means of bolts 21, which extend through the lower, inner ends of the arms 12, fixedly connect together the

mount parts

18 and 20 and the arms 12.

The base part 18 of the mount 10 is a vertically extending and preferably flat central portion 22 having upwardly and oppositely angularly directed portions 23, providing said base part 18 with a cruciform configuration, as in FIG. 4. Along the lateral edges of the central portion 22, rearwardly and oppositely angled bearing flanges 24 are integrally provided on the part 18, said flanges 24 being so formed as to cooperate with said central portion 22 to form a nesting area into which the outer face of a pole 11 is adapted to fit, as shown in FIGS. 2 and 5. Not in all instances will the face of the pole bear against the portion 22 of said base part 18 but, inany case, the flanges 24 will, the ends of said flanges being preferably provided with beads 25 that bite into the pole so the base part 18 has a rigid position on the pole.

As shown in FIGS. 3 and 4, the portion 24 of the base part 18 is provided with suitable holes 26 through which the abovementioned bolts 19 extend.

As shown best in FIGS. 2 and 3, the angularly directed portions 23, along their upper and lower edges, are provided with

flanges

27 and 28 between which the abutting inner ends of the arms 12 are disposed. As shown in FIGS. 2 and ,4, said flanges extend across the central portion 23. The upper flange 27 is preferably deeper than the lower flange 28, the latter being preferably shallow, as shown, so as not to extend into proximity to the bond wire 15 which, in this case, extends longitudinally along the bottom of a kerf or groove 29 in the portions of the arms 12 that are engaged in the channel that is formed by the base portion, comprised of

portions

22 and 23 and the

flanges

27 and 28 flanking the same.

The plate part 20 of the mount 10 is shown as a channel formed to have a web 30 and upper and

lower flanges

31 and 32, spaced apart similarly to the spacing between the

flanges

27 and 28 between which the abutting inner ends of the arms 12 are disposed.

lower flanges

31 and 32, spaced apart similarly to the spacing between the

flanges

27 and 28 of the base part 18 of said mount. It will be seen from FIGS. 1 and 4, that the plate part has the same included angle between the opposite ends as the included angle between the opposite ends of the channel that is formed by the

web

22,23 and

flanges

27 and 28 in the plate part 20, as above described.

FIG. 3 best shows how said two channels cooperate to confine the inner ends of the arms 12 when fixedly joined together by the bolts 21 which pass through bores provided in said ends of the arms.

Each bracket 13 is affixed, as by a bolt 33 to the outer end of each respective arm 12, the same comprising extensions of said arms. It will be understood that the broken arm 12 at the right of FIGS. 1 and 2, in practice, is provided with a bracket 13 similar to the one shown and that each said bracket is formed to have an end wall 34 to which an insulator 14 is affixed, the latter preferably extending outwardly in alignment with the arms 12.

As shown, the bond wire 15, by means of the bolts 33, electrically connects the brackets 13 so that any leakage in one of the insulators will 'be shorted to the other, as mentioned hereinabove.

It will be understood that each insulator 14, by means of a bracket extension 35, connects to and carries a current conducting wire (not shown).

Assemblies as above may be mounted on poles singly or in vertically spaced plurality, as desired.

While the foregoing has illustrated and described what is now contemplated to be the best mode of carrying out the invention, the construction is, of course, subject to modification without departing from the spirit and scope of the invention.

Having thus described the invention, what is claimed and desired to be secured by Letters Patent is:

1. An insulator arm assembly comprising:

a two-part metallic mount comprising a base part adapted to be affixed to the side of a pole, and a front plate part spaced from the base part in a direction away from the pole, said parts being formed to have flanges that are directed toward each other to form channels opening on the space between the mount parts,

two oppositely directed nonmetallic and dielectric arms with one end of each in end abutment and partly confined in the channels of the mount parts,

fastener means connecting said mount parts and extending transversely through the abutting ends of the arms to fixedly connect the arms to the parts of the mount,

an electrically conducting, insulator-mounting bracket affixed to the outer end of each of said arms, and

a current-shorting bonding wire extending between and connected to said brackets, said wire being disposed beneath and passing between and in spaced relation to the mount parts.

2. An insulator arm assembly according to claim 1 in which the arms extend angularly upwardly from-said mount, and the bonding wire has an intermediate portion that passes between the mount parts and is in contact with the undersurfaces of the arms.

3. An insulator arm assembly according to claim 2 in which the arms adjacent to where they abut are provided with a lonis disposed.

Claims

1. An insulator arm assembly comprising: a two-part metallic mount comprising a base part adapted to be affixed to the side of a pole, and a front plate part spaced from the base part in a direction away from the pole, said parts being formed to have flanges that are directed toward each other to form channels opening on the space between the mount parts, two oppositely directed nonmetallic and dielectric arms with one end of each in end abutment and partly confined in the channels of the mount parts, fastener means connecting said mount parts and extending transversely through the abutting ends of the arms to fixedly connect the arms to the parts of the mount, an electrically conducting, insulator-mounting bracket affixed to the outer end of each of said arms, and a current-shorting bonding wire extending between and connected to said brackets, said wire being disposed beneath and passing between and in spaced relation to the mount parts.

2. An insulator arm assembly according to claim 1 in which the arms extend angularly upwardly from said mount, and the bonding wire has an intermediate portion that passes between the mount parts and is in contact with the undersurfaces of the arms.

3. An insulator arm assembly according to claim 2 in which the arms adjacent to where they abut are provided with a longitudinal groove in which the mentioned bonding wire portion is disposed.