TENDANTS IN TELEGRAPHIC INSULATORS
Year: 1856

page_text: LETTERS PATENT to Robert Stirling Newall, of Gateshead-upon-Tyne,
in the County of Durham, Telegraph Engineer, for the Invention of
TENDANTS IN TELEGRAPHIC INSULATORS."
PROVISIONAL SPECIFICATION left by. the said Robert Stirling Newall
at the Office of the Commissioners of Patents, with his Petition, on
the 12th April 1856.
I, ROBERT STIRLING NEWALL, of Gateshead-upon-Tyne, in the County of
Durham, Telegraph Engineer, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN TELEGRAPHIC INSULATORS," to be as follows:-
I make the insulator of two or more separate parts, so that the hook or
part which holds the wire may be easily removed from the bell or other
support, which is fixed to the post; and I form the part which holds the
wire with a screw, so that by means of a nut I can firmly fix the wire after
it has been properly strained at each post or point of attachment. If a wire
should break the ends would fall between the two posts, while the other parts
of the line would remain suspended and tight; or if part of an insulator
should be damaged the part can be easily removed and replaced.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Robert Stirling Newall in the Great Seal Patent Office on
the 8th October 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
STIRLING NEWALL, of Gateshead-upon-Tyne, in the County of Durham,
Telegraph Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twelfth day of April, in the year of our Lord
One thousand eight hundred and fifty-six, in the nineteetnh year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Robert Stirling Newall, Her special licence that I, the said Robert Stirling
Newall, my executors, administrators, and assigns, or such others as I, the
said Robert Stirling Newall, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "IMPROVEMENTS IN TELEGRAPHIC INSULATORS," upon the condition (amongst
others) that I, the said Robert Stirling Newall, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of their hands
and seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Robert. Stirling Newall, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the,
following statement thereof, reference being had to the Drawings annexed,
that is to say:
I make the insulator of two or more separate parts, so that the part which
holds the wire may be easily removed from the bell or other support, which is
fixed to the post; and I form the part which holds the wire with a screw, so.
that by means of a nut I firmly fix the wire after it has been properly strained
at each post or point of support. If a wire should break the ends would fall
between two posts, while the other part of the line would remain suspended
and tight.
In the annexed Drawings, Figure 1 is a plan, Figure 2 a section, and

page_text: Figure 3 an end view, of one of my insulators; Figure 4 is a view of a bolt
for holding the wire x. B is the bell, with a wood screw cast into the arm for
screwing into the post; C is the cap, with a bayonet joint, for putting over the
top of the bell to exclude wet; A is the bolt for holding the wire. In order
to insulate it from the bell, I coat it and the inside of the bell with enamel.
The bolt is screwed at the lower end, and has a slot in it for holding the wire.
When the wire has been strained, the nut is screwed up tight against the wire,
so as to fix it firmly.
Figure 5 shews another form of insulator. The top of the bell has a screw
and slot for holding the wire, and a nut to fix it. The bolt A is fastened into
a cross piece, fixed to the pole in the usual manner. The bolt and the inside
of the bell are enamelled.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim as my Invention
the forming of telegraphic insulators in two or more parts, with the means of
holding the wire, in the manner herein-before described.
In witness whereof, I, the said Robert Stirling Newall, have hereunto
set my hand and seal, this Seventh day of October, One thousand
eight hundred and fifty-six.