Improved Insulator for Telegraph and Telephone Wires.
Year: 1893

page_text: Date of Application, 23rd Aug., 1893
Complete Specification Left, 25th June, 1894-Accepted, 28th July, 1894
PROVISIONAL SPECIFICATION.
Improved Insulator for Telegraph and Telephone Wires.
I HENRY KOSTER of 40 Grey Friars Road, Reading in the County of
Berkshire Telegraph Carpenter, do hereby declare the nature of this invention to
be as follows:-
This invention relates to an improved insulator whereby telegraph and telephone
wires are fixed firmly thereto without the use of any binding, wire as is necessary
with the insulators at present employed and further the insulators are more
securely fixed to the arms that carry them.
According to this invention I either make the outer shed of galvanized iron or
earthenware or other suitable material the inner shed being made of an insulating
material.
The top or crown of the insulator I form slightly convex and across this portion
I form a V groove.
Over the top of the insulator I pass a cap of concave form inside so that it may
fix over the aforesaid convexity, and the said cap I secure firmly by means of a nut
screwing on to the end of the bolt which secures the insulator to the arm, the said
bolt passing through the top of insulator for this purpose, so that when the wire is
placed in aforesaid V groove, the cap put on and the nut screwed down, the wire
will be firmly held or gripped. I further fix to the lower end of aforesaid bolt a
saddle piece with a bolt hole in each side so that the said saddle piece may be
passed over the arm through which latter a hole is made to pass a bolt through'in
order to firmly secure the insulator to the arm that carries it.
Dated this 23rd day of August. 1893.
BROWNE & Co.,
9,.Warwick Court; W.C., Agents for Applicant.
COMPLETE SPECIFICATION.
Improved Insulator for Telegraph and Telephone Wires.
I,, HENRY KOSTER of 40 Grey; Friars. Road;. Reading in the County of
Berkshire, Telegraph Carpenter, 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:
:―:
This invention relates to an improved insulator whereby telegraph and telephone
wires are fixed firmly thereto without the use of any binding wire as is necessary
with the insulators at present employed; and further the insulators are more
securely fixed to the arms that carry them.
According to this invention I either make the outer shed of galvanised iron or
earthenware or other suitable material the inner shed being made of any insulating
material.
The top or crown of the insulator I form slightly convex and across this portion
I form a groove.
Over the top of the insulator I pass a cap of concave form inside so that it may
fit over the aforesaid convexity.
I fix to the lower end of the bolt a saddle-piece with a bolt hole in each side so
that the said saddle-piece may be passed over the arm, through which latter a hole
[Pries 8d.1.

page_text: is made to pass a bolt through in order to firmly secure the insulator to the arm
that carries it.
And in order that my said invention may be understood I will describe the
same with reference to the accompanying sheet of drawings in which Fig. 1
shews elevation of an insulator constructed according to my invention;
Fig. 2, section of same; Fig. 3, modification; and Figs. 4 and 5 details hereafter
referred to. The same letters denote the same parts in all the views.
a shews insulator which I prefer to make of porcelain ; b is a bolt secured by
shellac c in insulator a; to the lower end of the bolt b fixed a saddle-piece d
secured to the arme of the telegraph pole by means of the bolt e¹ and nut f; g is a
cap fitting over the top of the insulator a-this cap is shewn detached in elevation
at Fig. 4; is a nut screwed on to the screwed end of plug m, for securing the
cap g; i is a slot in the plug m for the reception of the wire k: this slot may come
from the side of the plug m as shewn at Fig. 3. The top of the insulator a is
made convex and the inside of the cap g concave. I is a slot in flange of cap g for
the wire to pass through. Fig. 5 is a top plan of insulator a and plug m: the
plug m is suitably fixed to or formed with the outer shed of the insulator; n is a
groove for the wire to lie in.
In fixing wires to insulators constructed as above the nut is unscrewed and
the cap 9 removed, the wire k is then passed in slot i and the cap g put on and the
nut screwed tightly down when the wire k will be bent over the convex top of
the insulator a as shewn in dotted lines at Fig. 1. The saddle d is first passed
over the arm e and secured thereto by the bolt e' and nut f. By the employment
of my improved insulators the wire will not come off the insulator, being firmly
held thereon on account of the convex top aforesaid. And further it will be much
easier and quicker to fix wires to such insulators than by the ordinary method of
binding.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:
(1.) In insulators the screwed plug m slot i cap g and nut h all for the purposes
set forth.
(2.) Insulators having convex tops in combination with caps made concave
inside for the purpose set forth.
(3.) Insulators provided with saddle-piece d for the purpose set forth.
(4.) Insulators constructed substantially as set forth.
Dated this 25th dot of June 1894
BROWNE & Co.,
9, Warwick Court, Gray's Inu, W.C., Agents for Applicant.