IMPROVEMENTS IN STEAM BOILERS
Year: 1858

page_text: LETTERS PATENT to William Beardmore, of Deptford, in the County of
Kent, Engineer, for the Invention of "IMPROVEMENTS IN STEAM BOILERS."
Sealed the 31st May 1859, and dated the 10th December 1858..
PROVISIONAL SPECIFICATION left by the said William Beardmore at the
Office of the Commissioners of Patents with his Petition, on the 10th
December 1858.
I, WILLIAM BEARDMORE, of Deptford, in the County of Kent, Engineer,
do hereby declare the nature of the Invention for "IMPROVEMENTS IN STEAM
BOILERS," to be as follows:-
This Invention has for its object improvements in steam boilers; for these
purposes in order that the steam may be superheated before or as it leaves the
boiler by the products of combustion passing to the funnel or chimney, a
boiler is constructed as herein-after described, and the Invention is by pre-
ference used in conjunction with tubular flues passing through the water space
or spaces of the boiler. The furnace or fire-place is constructed at the lower
part of the boiler so as to have water all round it, except at the front where
the fire door is situated. The heat and products of combustion from the fire
having passed towards the back of the boiler, rise up into a chamber within
and near the back of the boiler, from which proceeds a number of tubular flues.
into the uptake flue leading to the funnel or chimney, through which tubular
flues part of the heat and products of combustion pass. By these means as
the tubular flues are covered with water the steami is generated. From the

page_text: upper part of the chamber from which the tubular flues above mentioned pass,
other tubular flues rise in an upright or inclined direction within the steam
chest or upper part of the boiler, from which the heat and products of com-
bustion pass by a flue or flues to the uptake flue leading to the funnel or
chimney; hence it will be understood that part of the heat and products of
combustion are used to heat the water and part to heat the steam within the
upper part or steam chest of the boiler. The uptake flue is also preferred to
pass through the steam chest or upper part of the boiler, or, in place of the
heat and products of combustion passing through the tubes within the steam
chest, tubes may be arranged to pass through the upper part or continuation
of the chamber into which the beat and products of combustion are received
from the fire or furnace, so that the interior of the tubes may contain steam
whilst the tubes are externally heated, the heat and products of combustion in
this as in the previous arrangement then passing into the uptake flue into the
funnel or chimney. Provision in each of the above cases may be made for
regulating the quantity of the products from the fire which shall respectively
pass in the one direction and in the other direction. Or, a boiler may be so
arranged that all the steam from a steam chest or upper part of the box may
pass through tubes heated by the heat and products of combustion after they
have passed through the horizontal tubular flues of a boiler; in which case
the uptake flue is enlarged above where the products pass from the horizontal
tubular flues into the uptake flue, and across such chamber a number of
tubes are fixed, one end of each of which opens into the steam chamber or
upper part of the steam boiler, and the other end of each of which opens into
a steam box or chamber to which the steam pipe to the engine is applied, by
which arrangement the whole of the steam will, in addition to being heated
by the sides of the uptake flue, be beated by passing through the heated tubes
which pass across or through the uptake flue to the steam box or chamber
from which the engine takes its supply.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Beardmore in the Great Seal Patent Office on the
7th June 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
BEARDMORE, of Deptford, in the County of Kent, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the. Tenth day of December, in the year of our

page_text: Lord One thousand eight hundred and fifty-eight, in the twenty-second
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said William Beardmore, Her special licence that I, the
said William Beardinore, my executors, administrators, and assigns, or such
others as I, the said William Beardmore, 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 King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of Man,
an Invention for "IMPROVEMENTS IN STEAM BOILERS," upon the condition
(amongst others) that I,. the said William Beardmore, 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 William Beardmore, do hereby declare
the 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 object improvements in the construction of marine
steam boilers and apparatus applied thereto, whereby the steam passing from
the steam chests of such boilers may pass through tubes situated in the uptake
or flue leading to the chimney or funnel, and thereby become superheated
before being supplied to the engines. I would here remark that I am aware
that steam from marine and other steam boilers has before been superheated
before the same has passed into the engines; I do not therefore claim the
superheating of steam supplied to marine or other steam engines, but only the
combination of apparatus herein described for such purpose.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a vertical section of a marine steam boiler with apparatus
combined therewith according to my Invention; Figure 2 is a section of
Figure 1. The boiler shown is arranged for having four fire-places, but this
may be varied, and separately is not of my Invention. Figure 3 is a vertical
section of another boiler, combined with apparatus according to my Invention;
Figure 4 is a section thereof taken at right angles to the section Figure 3;
and Figure 5 is a plan thereof. This boiler is similar to the one shewn in

page_text: Figures 1 and 2, and the apparatus combined therewith only differs in the
direction in which the tubes of the superheating apparatus run.
Figure 6
shews a section of a marine steam boiler, with apparatus applied thereto
according to my Invention. In this arrangement the uptake or rising flue
leading to the chimney is continued or extended above the boiler, in the other
Figures the uptake is enlarged suitably for receiving the superheating
apparatus below the upper part of the boiler. The arrangement shewn at
Fig. 6 is the one I prefer when applying my Invention to an old boiler, or
one which has been made without reference to my Invention. In each
of these Figures the same letters indicate the same parts. a, a, are the
fire-places, the heat and products from which rise into the chamber b, b,
near the back, then pass through the tubular flues c, c, into the flue or uptake
d, d, in which are fixed two sets or clusters of tubes e, e, and the heat and
products from the fire rise up amongst such tubes, and highly heat them.
The steam by a suitable pipe f connected with the upper part of the boiler or
stean chest is conducted into and passes through the first cluster or set of
tubes e, and thience back through the other set or cluster, and thence to the
engines through the pipe g; it will thus be seen that part of the heat derived
from the fuel consumed in the fire-places is employed in generating steam, and
that which would otherwise pass away as waste is employed to act on and
heat the tubes e, e, and consequently to superheat the steam.
Having thus described the nature of my Invention and the manner of
performing the same, I would have it understood that what I claim is the
mode herein described of combining superheating apparatus with steam
boilers.
In witness whereof, I, the said William Beardmore, have hereunto set
my hand and seal, this Third day of June, in the year of our Lord
One thousand eight hundred and fifty-nine.
W. BEARDMORE. (L.s.)