Insulator and Protector for Electric Conductors Page: 2 of 3
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UNITED STATES PATENT OFFICE.
THOMAS GARY COPPING, OF HOUSTON, TEXAS.
INSULATOR AND PROTECTOR FOR ELECTRIC CONDUCTORS.No. 874,834.
Specification of Letters Patent.
Application filed January 24, 1906. Serial No, 297,686,Patented Dec. 24, 1907.
To all whom it may concern:
Be it known that I, ThoMAs CARY COP-
PING, a citizen of the United States, and
resident of Houston, in the county of Harris
5 and State of Texas, have made an Improved
Insulator and Protector for Electric Con-
ductors, of which the following is a specifi-
cation.
My invention is an improved casing for
10 electric wires or conductors, which is adapted
to insulate them from trees, posts, or other
objects, and to protect them from injury by
contact, abrasion, or wear.
The invention is embodied in the con-
15 struction, arrangement and combination of
parts as hereinafter described, and shown in
accompanying drawing, in which
Figure 1 is a longitudinal section of my
improved insulator and protector, an electric
20 conductor being shown arranged therein as
in use. Fig. 2 is a perspective view of a
portion of one of the longitudinal halves of
the insulator. Fig. 3 is a transverse section
on the line 3-3 of Fig. 1. Fig. 4 is a trans-
25 verse section of the halves of an insulator
separated from each other. Fig. 5 is a per-
spective view of the separable halves of a
filling of material adapted to absorb water,
the same being in practice arranged as
30 shown in Fig. 1. Fig. 6 is a side of one end
of my improved insulator, showing the
means for securing the halves or other sec-
tions together.
In Figs. 1 to 4, 1 and 1 indicate the halves
35 or hollow sections composing the casing or
body of the insulator. One edge of each of
these parts 1, 1a, is provided with a longitu-
dinal groove 2, and the opposite edge with a
longitudinal rib or tenon 2a, whereby the
40 halves or sections 1, 1a, are adapted to fit
and lock together when one is placed upon
the other as in Figs. 1 and 3. Thus a cylin-
drical tube is formed within which an elec-
tric wire or conductor may be inclosed. For
45 supporting such wire or conductor within
the casing or insulator, I provide each of the
longitudinal halves or sections 1, 1, with
transverse bridges or partitions 3, the same
being practically semi-circular and having a
50 notch 4 in the inner edge, for receiving a
conductor X. As indicated in Fig. 1, the
several bridges or partitions 3 are alternated
or "staggered" so that each is opposite a
space that intervenes two adjacent bridges
55 on the opposite side. The two parts 1, 1",!
of the casing or body of the insulatormaybe .secured together by various means. In Fig.
6 a metal band 5 is passed along the casing and
its ends bolted or riveted together; or a
4 series of wires 6 may be passed around the
casing and their ends twisted together; or a
wire 7 may be wound spirally around the
casing as indicated. The end of the casing
is provided with a metal cap 8-see Figs. 1
and 6. Adjacent thereto is located a plug or
block 9 made in part of material adapted to
absorb water. It is made of rubber and
cotton, the layer of cotton being interior and
thicker at the inner end. This plug is made
in halves or other longitudinal sections, as
indicated in Fig. 5, so that an electric wire or
conductor may be readily placed therein.
The cotton will readily take up water which
may run along the electric line, and will also
protect the latter from the weather, that is
to say, from admission -of moisture which
may be held in the atmosphere.
It will be seen that by providing each of
the halves or sections 1, 1, with a groove on
one side and a tenon on the other, they are
made universally applicable to each other;
or, in other words, each is adapted to fit any
other, which would not be the case if one
half or section were provided with grooves
and the other with tenons. For the purpose
of forming a water-tight closure, a suitable.
cement or cotton wicking, or both are ap-
plied to the joints formed by the grooves and
tenons; and it is to be understood that fas-
tening means, say such as illustrated in Fig.
6, are to be applied after the cement or wick-
ing has been thus applied.
It will be further understood that the tubes
thus formed, will be made in practice of dif-
ferent sizes or diameters, and of various c
lengths, according to conditions of use. .1 do
not restrict myself to the number of longitu-
dinal sections of which the tube may be com-
posed, although it is preferable to construct
it in halves as shown.
having thus described my invention, what
I claim as new and desire to secure by Let-
ters Patent is-
1. An improved insulator and protector
for electric conductors, comprising longitu-
dinal sections each having its respective
edges provided with a longitudinal groove
and rib, and a series of notched transverse
supports for a conductor, the said supports
being arranged staggered and means for se-
curing the sections firmly together, substan-
tially as described.60
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Copping, Thomas Cary. Insulator and Protector for Electric Conductors, patent, December 24, 1907; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth513345/m1/2/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.