IMPROVED MEANS OD APPARATUS FOR GENERATING STEAM IN STEAM BOLLERS
Year: 1866

page_text: LETTERS PATENT to Robert Newton, of Lower Providence Mill, near
Keighley, in the County of York, for the Invention of "IMPROVED MEANS
OD APPARATUS FOR GENERATING STEAM IN STEAM BOLLERS."
Sealed the 7th August 1866, and dated the 24th March 1866.
PROVISIONAL SPECIFICATION left by the said Robert Newton at the
Office of the Commissioners of Patents, with his Petition, on the 24th
March 1866.
I, ROBERT NEWTON, of Lower Providence Mill, near Keighley, in the
County of York, do hereby declare the nature of the said Invention for
"IMPROVED MEANS OR APPARATUS POR GENERATING STEAM IN STEAM BOILERS," to.
be as follows:-
My Invention has for its primary object the more rapid generation of
steam in steam boilers. It also effects the more thorough combustion of the
fuel, and consequently diminishes the quantity of smoke produced.
I effect these results in the following manner :-Taking an ordinary flued
boiler for example, the front of the lower part of the flue, viz., directly under
the door framework I make quite air-tight by means of an air chamber, by
preference some four inches deep, fitting into the end of the flue and having
its edges cemented to prevent the admission of the outer air. A door is

page_text: fitted into the chamber for the withdrawal of ashes when required. The
chamber is, however, in full communication with the lower part of the flue,
and is furnished with a supply of compressed air by means of pipes and a fan
of ordinary construction placed without the boiler, the admission of the air
being regulated by a throttle valve within the supply pipe. To a boiler
having two flues my arrangement is supplied to both, each flue having its
own supply pipo and valve regulated at option. It will thus be seen that no
air is admitted to the flues (with the exception of the small portion allowed
to enter during the operation of firing) except through the air pipes, and I
thus obtain superior generative powers as well as more thorough combustion.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Robert Newton in the Great Seal Patent Office on the 19th
September 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
NEWTON, of Lower Providence Mill, near Keighley, in the County of York,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of March, in the year of our
Lord One thousand eight hundred and sixty-six, in the twenty-ninth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Robert Newton, Her special licence that I, the said Robert
Newton, my executors, administrators, and assigns, or such others as I, the
said Robert 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 "IMPROVED MEANS OR APPARATUS FOR GENERATING STEAM IN STEAM BOILERS,"
upon the condition (amongst others) that I, the said Robert 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.
NOW KNOW YE, that I the said Robert Newton, do hereby declare the

page_text: nature of the 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, that is to say :-
My Invention has for its primary object the more rapid generation of steam
in steam boilers. It also effects the more thorough combustion of the fuel,
and consequently diminishes the quantity of smoke produced. I effect these
results in the following manner :-Taking an ordinary flued boiler for example,
the front of the lower part of the flue, viz., directly under the door framework
I make quite air-tight by means of an air chamber, by preference some four
inches deep, fitting into the end of the fluo and having its edges cemented to
prevent the admission of the outer air. A door is fitted into this chamber for
the withdrawal of asbes when required. Tho chamber is however. in full
communication, with the lower part of the flue, and is furnished with a supply
of compressed air by means of pipes and a fan of ordinary construction placed
without the boiler, the admission of the air being regulated by a throttle valve
within the supply pipe. To a boiler having two flues my arrangement is
applied to both, each flue having its own supply pipe and valve regulated at
option. It will thus be seen that no air is admitted to the flues (with the
exception of the small portion allowed to enter during the operation of firing)
except through the air pipes, and I thus obtain superior generative powers as:
well as more, through combustion. I find in practice the proportion of one
and one-eighth square inches outlet of the fan to one squaro foot of grate bar
to work well, the inlet to the ash-pit being in the proportion of two and a
quarter square inches to each square foot of grate. Also that the diameters of
the fan outlet and the main air tube connected to it should be in the proportion
of two to three.
But in order that my Invention may be the better understood referenco is
made to the accompanying Sheet of Drawings, and to the letters and figures
marked thereon, similar letters representing similar parts on the different
views, that is to say:-
DESCRIPTION OF THE DRAWINGS.
=
Figure 1 represents an end elevation of an ordinary flued boiler in the
usual setting,.baving my apparatus attached; Figure 2 is a vertical section
through the flue at the grate bar end of the boiler showing my apparatus

page_text: seen, are in connection with the receiving chambers C, which as before
explained are fitted air-tight to the bottom front part of the flue so as to exclude
the outer air, and to admit to the under side of the fire-bars the current of air
supplied through the pipes B¹ and B³. Letters c indicate the doors used when
it is requisite to clean the ashes out of the ash-pit and which have planed.
fitting surfaces as well as the fire-doors; letters D indicate the throttle valves
in the pipes B', B', whereby the quantity of; air admitted to the fires may
be nicely adjusted. Admitting air, therefore, to the flues in the manner
above shewn and described in such quantities only as the circumstances and
the fuel demand I am enabled by the careful manipulation of the valves to
increase the generative powers of boilers with a decreased consumption of
fuel and a better combustion of the same.
The above-named methods require that the ordinary chimney damper shall
be by preference closed, say, seven-eighths parts at times.
Having now fully disclosed the nature of my Invention, I wish it to be
understood that what I claim as and of my Invention is,-
Firstly, the increased generation of steam in steam boilers by the exclusion
of the outer air by means of closed flues, as shewn and described dependent.
Secondly, upon the admission of the outer air in such quantities and at
such a pressure as circumstances may demand by means of the apparatus
shewn and described in conjunction with the closed flues or any mechanical
equivalent thereof.
In witness whereof, I, the said Robert Newton, have hereunto set my
hand and seal, this Eighteenth day of September, in the year of our
Lord One thousand eight hundred and sixty-six.
Witness,
PHILIP II. SHARP,
Patent Agent,
Leeds.
ROBERT NEWTON. (L.S.)