IMPROVEMENTS IN THE ARRANGEMENT AND CONSTRUCTION OF STEAM BOILERS AND HOT WATER PROVISIONAL SPECIFICATION
Year: 1873

page_text: LETTERS PATENT to John Botterill, and John Botterill, the younger,
Dyers, of Leeds, in the County of York, and Robert Wolstenholme,
of the same Place, Boiler Maker, for the Invention of "IMPROVEMENTS
IN THE ARRANGEMENT AND CONSTRUCTION OF STEAM BOILERS AND HOT WATER
PROVISIONAL SPECIFICATION left by the said John Botterill, John
Botterill, the younger, and Robert Wolstenholme at the Office of
the Commissioners of Patents, with their Petition, on the 13th May
1873.
We, JOHN BOTTERILL, and JOHN BOTTERILL, the younger, Dyers,
of Leeds, in the County of York, and ROBERT WOLSTENHOLME, of the
same Place, Boiler Maker, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE ARRANGEMENT AND CONSTRUCTION OP
STEAM BOILERS AND HOT WATER FEED APPARATUS THEREFOR," to be as
follows:-
=
The above Invention consists mainly in substituting in lieu of the
usual brickwork dividing the boilers (when two or more are used, set

page_text: side by side), a wrought-iron chest divided into compartments, or a
series of tubes or cylinders with a vertical distance, say of about four
inches between them filled in with brickwork, but being in communica-
tion with each other by a tube passing through the latter.
The compartments of the chest or series of tubes are filled with water t
(for the supply of the boilers), which is heated by the passage of the
products of combustion from the furnace after having traversed the
flucs of the boilers on either side, around the sides of the chest or tubes.
The water is supplied to the chest or tubes by a feed pipe descending
to near the bottom of the chest or lowest tube, and flows on to the exit 1
to the boilers at the other end, becoming heated in its passage.
The lowest tube or compartment of the chest is provided with a man-
hole and blow-off tube to allow of the cleansing thereof, and the upper
one is provided with a safety valve.
In applying the Invention to only one boiler a chest or series of 1
cylinders are placed at each side thereof.
By the adoption of the arrangements of steam boilers and hot water
feed apparatus therefor, as above described, the water enters the boilers
at a much higher temperature (effecting a saving of fuel), and is much
purer than usual, as the residuum is left in the chest or lower cylinder 2
(and can be readily cleaned therefrom), which thus renders the boilers
much less liable to incrustation.

page_text: of our Lord One thousand eight hundred and seventy-three, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said John Botterill, John Botterill, the
younger, and Robert Wolstenholme, Her special licence that we, 'the
said John Botterill, John Botterill, the younger, and Robert Wolsten-
holmic, our executors, administrators, and assigns, or such others as we,
the said John Botterill, John Botterill, the younger, and Robert
Wolstenholme, our 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 In-
vention for "IMPROVEMENTS IN THE AREANGEMENT AND CONSTRUCTION OF STEAM
BOILERS AND HOT WATER FEED APPARATUS THEREFOR," upon the condition
(amongst others) that we, the said John Botterill, Jolin Botterill, the
younger, and Robert Wolstenholme, our exccutors or administrators,
by an instrument in writing under our, or one of our, 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 bo
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 we, the said John Botterill, John Botterill, the
younger, and Robert Wolstenholme, 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 in writing, and on reference being had to the accompanying
Drawings, that is to say :-
This Invention relates to certain new and useful improvements in the
arrangement and construction of steam boilers, and hot water feed
apparatus therefor, and is illustrated on the accompanying Drawings in
Figures 1 to 9.
The Invention consists mainly in substituting wrought-iron chests
divided into compartments or separate series of tubes or cylinders in liqu
of the usual brickwork dividing or encasing the boilers, and forming the
sides, or encasing the external flues so that the feed water can be heated
in the: chest or tubes previously to being supplied to the boilers..

page_text: On the accompanying Drawing Figure 1 represents a front elevation
of a pair of double-flued Cornish boilers arranged side by side, having
our present improvements applied thereto; Figure 2 represents a cross
section of Figure 1 through the line 1-2, Figure 3; Figure 3 represents
a plan view of Figure 1; Figure 4 represents a longitudinal section of
Figures 1, 2, and 3, through the lines 3-4; and Figure 5 represents a
similar section through the lines 5—6.
Figure 6 represents a front elevation of a single double-flued Cornish
boiler, and illustrates the application thereto of a modification of our
improvements; Figure 7 represents a cross section of Figure 6 through
the lines 7-8, Figures 8 and 9; Figure 8 represents a plan view of
Figure 6; and Figure 9 represents a longitudinal section of Figures 6, 7,
and 8 through the lines 9-10.
On the Drawings, a represents the chest, and 6 the tubes or cylinders,
which are placed as shown between and on either side of the boilers c.
When the tubes are used, a vertical distance of about four inches is
left between them, which is filled in with brickwork marked d, but they
are placed in communication with each other by means of a tube e at
one end, and connecting tubes at the other end to allow of the proper
circulation of the water. When the chests a are used they are divided
into compartments by partitions 7, which however do not interfere with
the proper circulation of the water.
The compartments of the chests or the tubes are filled with water (for
subsequent supply to the boilers), which is heated by the passage of the
products of combustion from the furnaces as they traverse the external
flues of the boilers with which the chests or tubes run parallel.
The water is supplied to the chests or tubes by a feed pipe ♥
descending to near the bottom of the chest or lowest tubes, and flows on
to the exit h to the boilers at the other end, becoming highly heated in
its passage, as above described.
Each lowest tube or compartment is provided with a man-hole i and
blow-off tube j, to allow of the cleansing thereof, and each top one is
provided with a safety valve k. The other tubes or compartments are
also provided with man-holes m, to allow of being readily cleansed.
In the modification illustrated in Figures 6 to 9, only three tubes or
cylinders 6 are employed, one on each side of the boiler c in its external

page_text: flues, and the other across the back thereof, all being connected together
as shown. A divided chest or series of tubes can, however, be equally
well applied to the boiler.
By these improved arrangements the water enters the boilers at a
very much higher temperature (effecting a saving of fuel), and is much
purer than usual, as the residuum or the greater part thereof is left in
the chest or lowest tube, and can be readily cleaned or removed there-
from through the man-hole i, or washed out through the tube j, thus
rendering the boilers much less liable to incrustation. Any residuum
which may lodge in the other tubes can be as readily removed therefrom
through the man-holes m.
tr
Having now described the nature and object of our said Invention for
'Improvements in the Arrangement and Construction of Steam Boilers
and Hot Water Feed Apparatus therefor," together with the manner in
which the same is to be or may be performed or carried into practical
effect, we would remark in conclusion that we claim as our Invention,
the novel and peculiar application and employment, in lieu of the
brickwork usually dividing or encasing the external flues of steam
boilers, of chests divided into compartments, or series of tubes arranged
as described, or their equivalents, as a means of heating the feed water
previously to its being supplied to the boilers, substantially as above
described and as illustrated on the accompanying Drawings, whereby
incrustation in the boilers and the consumption of fuel are greatly
lessened.
In witness whereof, I, the said John Botterill, the younger, on
behalf of the said John Botterill, Robert Wolstenholme, and
myself, have hereunto set my hand and seal, this Fourth day of
November, in the year of our Lord One thousand eight hundred
and seventy-three.