IMPROVEMENTS APPLICABLE TO STREET AND OTHER GAS LAMPS FOR THE PURPOSE, OF PREVENTING STOPPAGES IN THE; SUPPLY PIPES
Year: 1871

page_text: LETTERS PATENT to Henry Edward Newton, of the Office for Patents,
1
50
66, Chancery Lane, in the County of Middlesex, Civil Engineer,
for the Invention of "IMPROVEMENTS APPLICABLE TO STREET AND OTHER
GAS LAMPS FOR THE PURPOSE, OF PREVENTING STOPPAGES IN THE; SUPPLY
PIPES." -A communication from abroad by Adrien Clément Lucien
Grave, of Paris, in the Republic of France.
PROVISIONAL SPECIFICATION left by the said Henry Edward Newton
at the Office of the Commissioners of Patents, with his Petition,
on the 5th December 1871.
I, HENRY EDWARD NEWTON, of the Office for Patents, 66, Chancery
5 Lane, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of the said Invention for "IMPROVEMENTS APPLICABLE TO STREET

page_text: AND OTHER GAS LAMPS FOR THE PURPOSE OF PREVENTING STOPPAGES IN THE
SUPPLY PIPES," to be as follows:-
The object of this Invention is to prevent the frequent stoppages in
the gas pipes of street or other lamps which are constantly exposed to
the influence of the external air.
In order to enable the flame of the gas lamp to maintain its proper
dimensions and its full lighting power I provide against the reduction of
the temperature of the gas by the employment as an isolating body of
an envelope or tube of tarred deal or other wood the whole height of the
pillar to enclose the gas pipe.
This envelope or tube is formed of two semicircular pieces of sufficient
thickness to ensure solidity, and held together by three or more copper
collars. The diameter of the envelope must be sufficiently great to allow
of introducing with ease the supply pipe, but in all cases must be some-
what greater at its lower end than at its upper end.
The cost of these envelopes is not great, and the amount of manual
labor necessary for their adjustment is so small that the first cost of
installation of the apparatus is not appréciably. increased.
IM
By the employment of this system the thickness of the lead supply
pipe may be considerably reduced,.thus giving an economy which would
more than pay for the cost of the 'envelopes."
Another advantage of this system is that should the door of the pillar
be broken or taken away the supply pipe will remain hidden, and will
not be liable to be injured by mischievous persons.
When these envelopes are enclosed in the masonry, as is sometimes
the case in narrow streets where the lamps project from the walls, small

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Edward Newton in the Great Seal Patent
"Office the 5th June 1872.
on
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer, send greeting.
S
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of December, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-.
fifth year of Her reign, did, for Herself, Her heirs and, successors, give
and grant unto me, the said Henry Edward Newton, Her special
licence that I, the said Henry Edward Newton, my executors, adminis-
trators, and assigns,. or such others as I, the said Henry Edward
Newton, 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 APPLICABLE TO STREET AND OTHER GAS LAMPS FOR THE PURPOSE
OF PREVENTING STOPPAGES IN THE SUPPLY PIPES," being a communication to
me from abroad by Adrien Clément Lucien Grave, of Paris, in the
Republic of France, upon the condition (amongst others) that I, the
said Henry Edward Newton, my executors or administrators, 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.
.
1.

page_text: When the gas pipes are enclosed in masonry, as is sometimes the case
in narrow streets where it is found to be necessary that the lamp should
be supported by a bracket and project from the wall, small holes c, d,
(Fig. 2) should be provided in the wall near the top and bottom of the
envelopes surrounding the pipe to act as ventilators to carry off any
escape of gas.
It will be evident that this system slightly modified may be adapted
to any other sort of gas lamp.
1
Having now set forth the nature of the Invention for "Improvements
Applicable to Street and other Gas Lamps for the Purpose of Preventing
Stoppages in the Supply Pipes," as communicated to me by my foreign
correspondent, and having explained the manner of carrying the same
into effect, I wish it to be understood that under the above in part recited
Letters Patent I claim, enclosing the gas pipes in an envelope or tube, as
and for the purpose above described.
In witness whereof, I, the said Henry Edward Newton; have here-
unto set my hand and seal, the Fifth day of June, in the year
of our Lord One thousand eight hundred and seventy-two.