Improvements in Electric Insulators.
Year: 1897

page_text: Date of Application, 15th Feb., 1897-Accepted, 19th June, 1897
COMPLETE SPECIFICATION.
Improvements in Electric Insulators.
I, ROBERT DELÉRY of No. 1820 Dauphine Street, New Orleans, Louisiana, United
States of America, Clerk, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
My invention relates to improvements in insulators, and has more particular
relation to insulators for supporting telegraph, telephone and electric light wires.
screw
The invention comprises an insulator consisting of two sections one of which is
provided with an attaching screw and a threaded annular slotted flange adapted to
threaded recess
receive the wires, and another section provided with a
adapted to receive the screw threaded flange and thus bind the two parts firmly
together.
The invention also consists of certain other novel constructions, combinations and
arrangements of parts, all of which will be hereinafter more particularly set forth and
claimed.
In the accompanying drawings forming part of this specification
Figure 1 represents a central vertical section through an insulator embodying my
invention.
Figure 2 represents an enlarged detail perspective view of the lower section of the
insulator, and
Figure 3 represents an enlarged detail perspective view of the upper section of
the same.
A in the drawings represents the cross tree or arm upon which the insulator is to
be applied, B the line wire, and C my improved insulator. This insulator comprises
two sections c and c¹. Section c¹ is provided upon its under side with a socket c²
from the center of which extends a pendant stud having its lower end screw
threaded as at c, so that it may be readily screwed into the arm A or any other
article to which the insulator is to be attached. The upper end of said section c¹
is formed with an annular screw threaded flange c³ through which is cut a slot c for
the reception of the wire B. This flange c is screw threaded both internally and
externally for a purpose hereinafter more particularly described. The groove or
slot e preferably extends into the top of the section c³, so that when both of the
sections are applied together, the wire will not prevent said sections fitting snugly
in position. The said section c may be given any desired shape, and it is provided
on its under side with a screw threaded socket having a central screw threaded
stud c. It will be observed from the foregoing description that when the wire B is
placed in the groove c and the section c screwed down over the section c¹, that the
annular flange c will enter the screw threaded socket c', while the stud c³ will engage
the internal screw threads of said flange. The joint between said sections c and c¹
is thus made doubly secure. I preferably construct this insulator of glass, porcelain,
hard rubber or other similar material usually employed in the construction of
insulators. It will be observed that by the employment of my invention the use of
tie wires and other securing devices is altogether obviated and the wire is secured
firmly between the two sections of the insulator, whereby said wire is supported and
prevented from moving longitudinally. While this insulator is very simple and
cheap in construction, it at the same time, is effective, and when a wire is once applied
in position therewith, it is held securely against any accidental displacement. The

page_text: insulator may be used over and over again by simply unscrewing the top section c to
permit the wire B to be removed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.
1. An insulator comprising two sections, one of which is provided with a screw
threaded stud for attachment to any fixture and also with a screw threaded annular
flange, and the other section with a screw threaded socket adapted to receive said
flange, whereby the wire is clamped between said sections, substantially as
described.
2. An insulator comprising two sections, one of which is provided with attaching
means and an annular flange having screw threads formed upon both its inner and
outer walls, and another section having a screw threaded socket and a screw threaded
stud formed thereon and adapted to engage the screw threads of the other section,
substantially as described.
3. An insulator comprising two sections, one of which is provided with attaching
means and an annular screw threaded flange having a wire receiving slot formed
therein, and another section having a screw threaded socket adapted to receive said
flange, substantially as described.
Dated this 15th day of Habruary 1897
Abruary
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.