Improvements in Insulators for Telegraph and like Wires.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Insulators for Telegraph and like Wires.
I, GEORGE ASHBY, of Dundas, Ontario, Canada, Wood Worker do hereby
declare the nature of this invention to be as follows:-
The object of this invention is to provide an insulator for telegraph, telephone,
electric light, and like wires, which will prove more efficient than those at present
in use and which will slightly "give to any slight tensile strain due to. any
elongation or contraction due to differences of the temperature.
"
The invention comprises a bifurcated projection from an arm on the telegraph
or like post in which bifurcation a cylindrical insulator is mounted so as to be
capable of rotation. Discs are mounted on each side of the insulator, or it may be
grooved.
The telegraph or like wire passes over the insulator, in contact therewith, and
is secured by a piece of wire, united thereto on one side of the insulator, then passed
through an aperture therein and again secured to the telegraph or like wire on the
other side.
Dated this 22nd day of Sontember 1897
P. R. J. WILLIS,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Insulators for Telegraph and like Wires.
I, GEORGE ASHBY, of Dundas, Ontario, Canada, Wood Worker, 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 has reference to a novel construction in a wire insulator; the
object being to provide more especially an insulator for the cross arms of telegraph
poles, that is of simple and inexpensive construction and to which the telegraph
wires can be quickly attached and removed, and which will "give" to any slight
tensile strain due to elongation or contraction due to differences of temperature.
The invention consists in the features of construction hereinafter described and
claimed.
In the accompanying drawings forming a part of this specification, Figure 1 is
a side elevation of a portion of a cross arm provided with an insulator constructed
in accordance with this invention. Fig. 2 is a central vertical section of the same,
Fig. 3 is a side elevation illustrating a modification.

page_text: Referring now to said drawings, 1 indicates the cross arm of the telegraph pole,
and 2 the said insulator. The insulator consists of a screw threaded stem 3 to be
screwed into the cross arm with the uprising fingers 4, between which the insulating
substance 5 is secured. One of the uprising arms 4 is provided with a lug 6 at its
upper end, which is adapted to hold the telegraph wire in position, while the line
man is getting ready to secure the same to the insulator. The said insulating
substance consists of a cylindrical piece of glass or other non-conducting material
having a central groove 7, adapted to receive the telegraph wire S and the tie
wire 9 in the manner shewn. As a preferred construction the said non-conducting
substance 5 is held between discs of wood 10 having bosses 11, fitted into recesses 12
in the ends of the insulator. Between the inner ends of the discs or plates 10 is
the tube 13, which fits recesses in the discs at its ends and also fits the opening 14
through the insulating substance 5. These wooden discs or plates are placed
on the outside of the insulating substance, and the parts are secured in place by
means of a bolt 15 in the manner shewn.
When it is desired to use an insulator of this construction upon a wall or other
upright place, the stem 3, by which it is screwed in place can be provided with an
extension, which serves as the bolt 15, that passes through the wooden tube 13,
while the arm 4 is situated between the insulator and the stem; said arm being also
provided with a lug 6, as before described.
An insulator constructed in accordance with this invention is not only simple
and durable, but can be made of smaller dimensions and can be readily applied or
removed, while at the same time the telegraph wire can be quickly attached thereto
or removed therefrom.
Having now particularly described an 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) An insulator consisting of a stem provided with an arm 4 having a lug 6, a
bolt 15 connected with said stem, and a.cylindrical piece 5 mounted upon said bolt,
substantially as described.
(2) In an insulator, the insulating substance 5 consisting of a cylindrical piece
provided with an exterior groove, end recesses, and a central opening, and discs 10
situated on both sides of said insulating substance 5 and provided with bosses 11
situated within said recesses, and a tube situated within said opening substantially
as described.
Dated this 20th day of June 1898
P. R. J. WILLIS,
Agent for Applicant.