U.S. patent number 3,652,780 [Application Number 05/085,494] was granted by the patent office on 1972-03-28 for reversibly mountable insulator.
This patent grant is currently assigned to Dare Products, Incorporated. Invention is credited to Robert M. Wilson.
United States Patent |
3,652,780 |
Wilson |
March 28, 1972 |
REVERSIBLY MOUNTABLE INSULATOR
Abstract
An insulator assembly is provided adapted to be mounted on an
electric fence post and to support electrically charged wire. The
insulator is provided with a long extender body adapted to support
the electrically charged wire in a position wherein it is spaced
apart from the fence post a substantial distance. The base of the
insulator assembly is provided with a clip adapted to engage
laterally extending flanges of the fence post, as for example, the
laterally extending flanges of a steel fence post having a T-shaped
cross section. Apertures are provided in the extender body
immediately adjacent the base clip to receive a cotter pin or other
means for clamping the jaws of the clip together on the fence post,
when the insulator is so mounted that the extender is directed
outboard of the fence post. Additionally, longitudinally extended
flanges are provided in the base clip and provided with apertures
to receive a cotter pin or similar means for clamping the jaws
together when the extender body is positioned inboard of the
flanges of the fence post.
Inventors: |
Wilson; Robert M. (Battle
Creek, MI) |
Assignee: |
Dare Products, Incorporated
(Battle Creek, MI)
|
Family
ID: |
22191982 |
Appl.
No.: |
05/085,494 |
Filed: |
October 30, 1970 |
Current U.S.
Class: |
174/45R; 174/175;
174/163F; 248/72; 248/229.13; 248/228.4 |
Current CPC
Class: |
H01B
17/145 (20130101); E04H 12/24 (20130101) |
Current International
Class: |
H01B
17/14 (20060101); E04H 12/24 (20060101); E04H
12/00 (20060101); H01b 017/16 (); A01k
003/00 () |
Field of
Search: |
;174/45R,154,155,158R,158F,161R,161F,163R,163F,168,174,175 ;D8/230
;D26/10 ;248/65,70,72,73,221,226R,226D,226E,227,228,229,230
;256/3,10,11,47,48,54,55 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Other References
A page (page number unknown) from a brochure published by Wall
Manufacturing, Inc., Box 146, Hutchinson, Minnesota, 55350,
entitled "The Stur-dee Bracket," Publication date unknown, but
cited by the applicant as prior art. .
Two loose-leaf pages (page numbers unknown) listed as "Catalog
Service," entitled "Red Snap'r Electric Fence Insulators,"
copyright 1960, published by North Central Plastics Incorp.,
Ellendale, Minnesota..
|
Primary Examiner: Askin; Laramie E.
Claims
I therefore particularly point out and distinctly claim as my
invention:
1. An insulator assembly adapted to be mounted on a fence post
having laterally extending flanges, comprising a U-shaped extender
body having a pair of substantially parallel spaced apart lateral
members connected together at one end by a cross member and having
an insulator body of an electrically insulating material mounted on
said cross member, said lateral members being provided with
clamping jaws near the other end each having a narrow groove
provided adapted to engage snugly the laterally extending flanges
of said fence post, and having longitudinal extensions beyond said
clamping jaws, a pair of cooperating holes provided in said lateral
members immediately adjacent to and on the proximal side of the
grooves of said clamping jaws with respect to said cross member
adapted to receive fastening means for clamping said jaws to said
lateral flanges when the main portion of the insulator assembly
extends externally of the fence post, and a second pair of
cooperating holes provided in said longitudinal extensions
immediately adjacent to the grooves of said clamping jaws and
distal with respect to said cross member adapted to receive
fastening means for clamping said jaws to said laterally extending
flanges when the entire longitudinal flange of the fence post
extends between the lateral members of the U-shaped extender
body.
2. An insulator assembly according to claim 1, additionally
including a cotter pin disposed within a pair of said cooperating
holes and bent over to clamp said clamping jaws to the laterally
extending flanges of said fence post.
3. An insulator assembly according to claim 1, wherein said lateral
members are each provided with longitudinally directed ribs,
thereby stiffening said lateral members.
4. An insulator assembly according to claim 1, wherein said
insulator body is comprised of a molded electrically insulating
material and includes a horizontal channel for supporting an
electrical wire and a restricted notch communicating with the
exterior and enabling said wire to be inserted within said
channel.
5. In combination, a fence post having a T-shaped cross section
including a pair of laterally extending flanges, and an insulator
assembly mounted on said fence post comprising a U-shaped extender
body comprising a pair of substantially parallel spaced apart
lateral members connected together at one end by a cross member and
having an insulator body of an electrically insulating material
mounted on said cross member, said lateral members being provided
with clamping jaws near the other end thereof engaging the
laterally extending flanges of said fence post, said lateral
members having longitudinal extensions beyond said clamping jaws, a
pair of cooperating holes provided in said lateral members adjacent
to and on the proximal side of said clamping jaws with respect to
said cross member, a second pair of cooperating holes provided in
said longitudinal extensions adjacent to said clamping jaws and
distal with respect to said cross member, and fastening means
extending through one of said pair of cooperating holes and
clamping said jaws to the laterally extending flanges of said
post.
6. The combination according to claim 5, wherein said insulator
assembly is mounted so that the main portion of the insulator
assembly extends externally of the fence post and said fastening
means comprises a cotter pin extending through the cooperating
holes on the proximal side of said clamping jaws.
7. The combination according to claim 5, wherein said insulator
assembly is mounted so that it includes the entire longitudinal
flange of said fence post between the lateral members thereof and
said fastening means comprises a cotter pin extending through the
cooperating holes distal to said cross member.
Description
BACKGROUND OF THE INVENTION
The present invention deals broadly with insulator assemblies for
mounting on fence posts of electrically charged fences, and more
particularly refers to insulator assemblies having a long extender
body to space the electrically charged wires a substantial distance
from the fence post and having clip means for engaging the
laterally extending flanges of a fence post. Fence posts for use in
erecting electrically charged fences are available in many
different cross-sectional forms, as for example angle-form, T-form,
U-form, or arcuate, generally having laterally extending flanges
upon which insulator assemblies may be mounted. Insulators for such
fence posts are well known in the art. More recently, particularly
because of the use of higher voltage electrical currents, it has
become desirable to mount the electrically charged wires spaced a
considerable distance from the fence post to prevent shorting and
current leakage. Various extending type clips have been disclosed
in the art. However, such clips must generally be mounted outboard
of the fence post if the clip of the insulator is to be securely
affixed.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an
insulator assembly for supporting electrically charged wires on a
metal fence post having means for extending the insulating body
supporting the electrically charged wires a substantial distance
from the fence post.
It is a further object to provide an insulator assembly of the type
described having clip means for engaging laterally extending
flanges of the fence post, as for example a fence post having a
T-cross section.
It is still further an object to provide an insulator assembly of
the type described wherein the clip engaging the flanges of the
fence post may be securely affixed as by means of a cotter pin.
It is still further an object to provide an insulator assembly of
the type described wherein means is provided so that the clip of
the assembly may be mounted on the lateral flanges of a fence post,
for example a T-cross section fence post and secured thereto by
means such as a cotter pin, with the insulator assembly being
adaptable for mounting either outboard or inboard with respect to
the fence post.
Still further objects and advantages of the invention will appear
as the description proceeds.
To the accomplishment of the foregoing and related ends, the
invention, then, consists of an extender including insulator
assembly which may be adjustably mounted on a standard flanged edge
electrical fence post and utilized to support an electrically
charged wire, as herein fully described and particularly pointed
out in the claims, the annexed drawings and the following
description setting forth in detail certain illustrative
embodiments of the invention, such disclosed embodiments
illustrating, however, but several of the various ways in which the
present invention may be used.
BRIEF DESCRIPTION OF THE DRAWINGS
In the annexed drawings:
FIG. 1 is a perspective view illustrating insulator assemblies
according to the present invention mounted in both outboard and
inboard relationship with respect to a T-cross section fence
post.
FIG. 2 is a view partly in cross section taken at the line 2--2 of
FIG. 1, looking in the direction of the arrows.
FIG. 3 is a side elevational view of an outboard mounted insulator
assembly on a fence post.
FIG. 4 is a view partly in cross section taken at the line 4--4 of
FIG. 3, looking in the direction of the arrows. FIG. 5 is a side
elevational view of an inboard mounted insulator assembly; and
FIG. 6 is a cross-sectional view taken at the line 6--6 of FIG. 5,
looking in the direction of the arrows.
DESCRIPTION OF THE SPECIFIC EMBODIMENTS
Referring to the drawings, FIG. 1 illustrates two insulator
assemblies 10 and 11 according to the invention mounted on a fence
post 12 of T-shaped cross section and having a pair of lateral
flanges 13 and 14 and a longitudinal flange 15. Studs 16 are
conventionally provided to limit vertical travel of objects mounted
on the fence post. The insulator assembly 11 is mounted outboard of
the fence post 12, that is, the main portion of the insulator
assembly extends externally of the fence post. The insulator
assembly 10 is mounted inboard of the fence post, since the
U-shaped insulator body 20 includes the entire longitudinal flange
15 of fence post 12 therein between its lateral flanges 18 and
19.
Referring to the drawings, and particularly FIGS. 3 and 4, the
insulator assembly comprises a U-shaped body 17 having lateral
members 18 and 19 and a cross member 20 connecting the outer ends
of the lateral members. The lateral members are preferably provided
with longitudinal ribs 21 for imparting rigidity to same. Near one
end of the lateral members 18 and 19 are a pair of clamping grooves
or jaws 22 and 23 adapted to engage the lateral flanges 13 and 14
of the fence post. Holes 24 and 25 are provided in the lateral
members 18 and 19, respectively, for the insertion of a cotter pin
39 therethrough with its ends bent over to provide clamping force
permanently maintaining the insulator assembly affixed to the fence
post. Beyond the clamping grooves or jaws 22 and 23 are provided
longitudinal extensions 26 and 27 of the lateral members 18 and 19,
having holes 28 and 29, respectively, provided therein. As shown in
FIGS. 5 and 6, a cotter pin 39 is inserted through the holes 28 and
29 with its ends bent over to clamp the insulator assembly 11 to
the fence post, when the insulator assembly is mounted in inboard
position. Because of the arrangement shown in which extensions 26
and 27 are provided with additional cotter pin mounting holes 28
and 29, the insulator assemblies may be mounted either inboard or
outboard, as desired. Holes 44 and 45 are provided for receiving a
cotter pin if bowing of the lateral members occurs when the
insulator assembly is mounted in inboard position. With either type
of mounting, the insulator body should be positioned so that the
cotter pins 39 engage the upper surface of a lug 16 to prevent
downward sliding of the insulator assembly.
As shown in the drawings, and particularly in FIGS. 2, 3 and 5, an
insulator body 41 is mounted on the cross member 20 and preferably
affixed thereto by means of a rivet 32. The insulator body is
preferably molded of an electrically insulating material such as a
plastic material or rubber. The insulator body is shaped to provide
a neck 30 in the form of an annular groove adapted to lengthen the
electrical leakage path, and a head 31. The head is provided with
horizontal channels 33 and 34 for retaining the electrical
conducting wires 42 which may be of single or multiple strand type,
which is diagrammatically illustrated. The channels, in this
preferred construction, communicate with the upper and lower
surfaces, respectively, of the head 31 by means of constricted
notches 43 and 44 terminating in hooks 35, 36, 37 and 38 adapted to
retain the wires 42 after they have been pushed through the notches
43 and 44 and into the channels 33 and 34.
In mounting the insulator assemblies according to the present
invention, the lateral members 18 and 19 are spread apart and the
clamping grooves 22 and 23 placed over the lateral flanges 13 and
14 of the post, either in the outboard position as shown in FIGS. 3
and 4, or in inboard position as shown in FIGS. 5 and 6. A cotter
pin 39 is then placed through the holes 24 and 25 when mounted in
the outboard position or through the holes 28 and 29 when mounted
in the inboard position. The ends of the cotter pin are bent over
to provide clamping force permanently affixing the insulator
assembly to the pole. The insulator assemblies are preferably
positioned so that the cotter pin engages a lug 16 to prevent
downward sliding of the insulator assembly. The wire 42 may then be
inserted into the channel 33.
Although a particular form of insulator body has been shown and
described, it is to be understood that any of a large number of
insulator heads known in the art may be utilized in its place,
without substantially affecting the operation of the invention.
The insulator assembly of the present invention is superior to
those disclosed in the art since it provides an extender for
supporting the insulator for electrically charged fences a
considerable distance out from the metal post, and provides an
assembly which may be positively clamped to a post, as for example
of the T-shaped type, with the electrical wires being held at a
substantial distance from the post, and also provides a novel means
for permanently mounting and affixing the insulator assembly to a
post with a cotter pin (which provides removability when desired)
in either inboard or outboard position. Additionally, the insulator
assembly is relatively simple to manufacture and can be
inexpensively produced.
It will be seen from the above that a simple and relatively
inexpensive yet practical and durable means has been disclosed for
attaining the desired ends. Attention is invited, however, to the
possibility of making variations within the spirit and scope of the
invention set forth, and therefore the embodiments shown in the
drawings are to be considered as merely setting forth the invention
for illustrative purposes, and with no intention to limit the scope
of the invention herein described, illustrated, and claimed.
Other modes of applying the principle of my invention may be
employed, instead of those explained, change being made as regards
the insulator assembly herein disclosed, provided the means stated
by any of the following claims or the equivalent of such stated
means be employed.
* * * * *