AN IMPROVED METHOD OF SETTING STEAM BOILERS, AND OF ARRANGING THE FLUES LEADING FROM THE FURNACES THEREOF.
Year: 1874

page_text: LETTERS PATENT to Thomas Hydes and John Emil Bennett, both of
Sheffield, in the County of York, for the Invention of "AN IMPROVED
METHOD OF SETTING STEAM BOILERS, AND OF ARRANGING THE FLUES LEADING
FROM THE FURNACES THEREOF.
"
FROM THE FURNACES THEREOF.'
"
PROVISIONAL SPECIFICATION left by the said Thomas Hydes and
John Emil Bennett at the Office of the Commissioners of Patents,
with their Petition, on the 17th March 1874.
WC, THOMAS HYDES and JOHN EMIL BENNETT, both of Sheffield, in
the County of York, do hereby declare the nature of the said In-
vention for "AN IMPROVED METHOD OF SETTING STEAM BOILERS, AND OP
ARRANGING THE FLUES LEADING FROM THE FURNACES THEREOF," to be as
follows:
-
This Invention consists in so constructing and arranging the flues
leading from the furnaces of steam boilers as to compel the heated gases,

page_text: after they have acted on the underneath part of the boiler to pass thence
over the top or crown of the said boiler before the said heated gases
pass into the chimney.
The means by which we propose to effect this object are as follows,
that is to say :-
-In addition to the side or bottom flues leading from the
furnace of the boiler we continue to build the brickwork or setting of
the boiler over the top or crown thereof, and instead of placing guido
plates in the flues, as described and represented in the Specification of a
former Patent granted to the said Thomas Hydes and John Emil
Bennett, bearing date the 28th day of July, A.D. 1868, numbered 2363,
by this present Invention we dispense with the said guide plates and
simply employ plain flues in the usual way. And by thus passing the
hot gases over the top or crown of the boiler, after they have first acted
in the usual way on the under surface of the boiler we effect economy
in fuel.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Hydes and John Emil Bennett in the
Great Seal Patent Office on the 17th September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, THOMAS
HYDES and JOHN EMIL BENNETT, both of Sheffield, in the County of 2
York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of March, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc- 2
cessors, give and grant unto us, the said Thomas Hydes and John Emil
Bennett, Her special licence that we, the said Thomas Hydes and
John Emil Bennett, our executors, administrators, and assigns, or
such others. as we, the said Thomas Hydes and John Emil Bennett,
our exccutors, administrators, and assigns, should at any time agree 3
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

page_text: and Ireland, the Channel Islands, and Isle of Man, an Invention for
"AN IMPROVED METHOD OF SETTING STEAM BOILERS, AND OF ARRANGING THE
FLUES LEADING FROM THE FURNACES THEREOF," upon the condition (amongst
others) that we the said Thomas Hydes and John Emil Bennett, our exc-
cutors or administrators, by an instrument in writing under our,.
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 Scal Patent Office within six calendar months next and imme.
diately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Thomas Hydes and John Emil
Bennett, do hereby declare the nature of our said Invention, and
in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, that is
to say :-
This Invention consists in so constructing and arranging the flues
leading from the furnaces of steam boilers as to compel the heated gases,
after they have acted on the underneath part of the boiler to pass thence
over the top or crown of the said boiler before the said heated gases pass.
into the chimney.
The means by which we propose to effect this object are as follows,
that is to say-In addition to the side or bottom flues leading from the
fürnace of the boiler we continue to build the brickwork or setting of
the boiler over the top or crown thereof, and instead of placing guide
plates in the flues, as described and represented in the Specification of
a former Patent granted to the said Thomas Hydes and Joseph
Bennett, bearing date the 28th day of July A.D. 1868, numbered 2363,
by this present Invention we dispense with the said guide plates and
simply employ plain flues in the usual way. And by thus passing the
hot gases over the top or crown of the boiler, after they have first acted
in the usual way on the under surface thereof we effect economy in
fuel.
And in order to explain our said Invention more completely we will.
now proceed to describe the means by which our Invention may be
carried into practical effect, reference being had to the illustrative Sheet
of Drawings accompanying these Presents, and to the numeral figures
and letters of reference marked thereon, as follows:-

page_text: >
DESCRIPTION OF THE SHEET OF DRAWINGS.
Figures 1 to 6 inclusive represent six views of our Invention as
applied to boilers known as Lancashire boilers; Figure 1 is a longi
tudinal section on the line A, B; Figure 2 is a sectional plan through
G, H; Figure 3, a similar plan through I, K; and Figures 4, 5, 6,.
are transverse sections on the lines A, B, C, D, and E, F, at Figures
1, 2, 3.; Figures 7 to 10 inclusive represent four views of our Invention
as applied to boilers known as plain cylinder or egg-end boilers.
Figure 7 is a longitudinal section on the line R, S; Figure 8 is a
sectional plan on the line T, U; and Figures 9 and 10 are transverse
sections on the lines N, O, P, Q, at Figures 7 and 8.
At each of the above-named Figures similar letters of reference are
employed to denote corresponding parts wherever they appear or can be
seen at each of such said Figures respectively.
:
As regards Figures 1, 2, 3, 4, 5, 6, a marks the outer walls or brick-
work enclosing the boiler b; c is the ordinary tube or flue of the boiler;
d are ordinary side flues; e, central flue beneath the boiler; f, fluc
extending over the top or crown of the boiler and communicating with
the main outlet flue g leading to the chimney. The side flues dare
separated from the flue ƒ by the brickwork at h, h, and the only com-
munication between the flues & and f is by the central flue e, across
which cross walls i, k, are built; the walls i are solid, and the walls k
have openings therein in a line with the central flue e. The arrows' -
flight denote the course the hot gases take in their passage through and
under the boiler, and thence over the top or crown of the boiler into the
main outlet flue g. The dotted lines at X, X, Figures 1, 2, 3, denote
the position the boiler occupies in the brickwork and flues. A damper
is fitted at X to regulate the draught. As regards Figures 7, 8, 9, 10,
m marks the outer walls or brickwork enclosing the boiler n; o, o, are
side flues; p, central flue from furnace q; ", bridge; 8, top flue;
t, brickwork for separating the side flues o from the top flue t, except
at the parts u where the hot gases escape from the side flues after the
hot gases have acted on the underneath part of the boiler, as denoted
by the arrows' flight; w is an ordinary wall for splitting the current of
hot gases, so as to direct them along the side flues o. The dotted a

page_text: lines X, X, at Figures 7 and 8 denote the position the boiler occupies in
the brickwork and flues.
Having now fully described and set forth the nature and object of
our said Invention for "An Improved Method of Setting Steam Boilers,
and of Arranging the Flues leading from the Furnaces thereof," together
with the best means we are acquainted with for carrying the same into
practical effect, we would remark in conclusion that what we claim as
our Invention, intended to be secured to us by the herein-before in part
recited Letters Patent, is as follows:-We claim the modes above
described and represented by the accompanying Sheet of Drawings of
setting steam boilers by arranging the flues in the manner represented,
and further in combining the flues fands with the ordinary side flues
d and o leading from the furnace, so as to compel the hot gases to pass
over the top or crown of the boiler after they have acted on the under-
neath part and sides thereof, as above stated.
In witness whereof, we, the said Thomas Hydes and John Emil
Bennett, have hereunto set our hands and scals, this Fifteenth
:
day of September, in the year of our Lord One thousand eight
hundred and seventy-four.