IMPROVEMENTS IN HEATING VERTICAL STEAM ENGINE BOLLERSTINGTICA BOILE
Year: 1874

page_text: LETTERS PATENT to John Booth, of the Firm of Joseph Booth and
Brothers, of the Union Foundry, Rodley, near Leeds, in the County
of York, Engineer, for the Invention of "IMPROVEMENTS IN HEATING
VERTICAL STEAM ENGINE BOLLERS"
PROVISIONAL SPECIFICATION left by the said John Booth at the
Office of the Commissioners of Patents, with his Petition, on the
15th April 1874.
I, JOHN BOOTH, of the Firm of Joseph Booth and Brothers, of the
Union Foundry, Rodley, near Leeds, in the County of York, Engineer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
HEATING VERTICAL STEAM ENGINE BOILERS," to be as follows:-
:
The object of the Invention is to economize the heat from the fire or
furnace of vertical boilers. For this purpose tlie flame and heated
products of combustion from the fire-place pass out therefrom into an
outer or surrounding chamber formed at or about the level of the fire-

page_text: box, and having traversed this chamber to near the opposite side from
the admission thereto the flame and heated products are conducted up
by an inclined channel to a second ring or surrounding chamber, along
which the heated products pass around the boiler to again near the
opposite side thereof, so as thereby to effect nearly a double circulation
round the boiler in horizontal channels. Any smoke or remaining
heated products may then pass away to the flue or they may be con-
ducted into a third surrounding channel similar to those described, and
thence to the flue, and so on when desired. These surrounding channels
or chambers are each formed by linings and divisions of fire-brick, and
the whole is enclosed in a casing or surrounding cylindrical iron jacket.
This jacket for convenience of construction I generally form in two parts
joined at or about the centre of its height, as thereby increased facility
is obtained for filling in the fire-brick lining and the partitions.
I also form the brickwork forming the horizontal partitions inclined
towards the boiler, and also so that that forming the outer lining of the
channels may be thicker at the lower than at the upper surface thereof.
Passages are formed at intervals for clearing the flues.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Booth in the Great Seal Patent Office on
the 14th October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BOOTH, of the Firm of Joseph Booth and Brothers, of the Union
Foundry, Rodley, near Leeds, in the County of York, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of April, 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 successors, give
and grant unto me, the said John Booth, Her special license that I,
the said John Booth, my executors, administrators, and assigns, or such
others as I, the said John Booth, my exccutors, 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,

page_text: 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 IN HEATING VERTICAL STEAM
ENGINE BOLLERS," upon the condition (amongst others) that I, the said
John Booth, 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 John Booth, do hereby declare the
naturo 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 :-
The object of the Invention is to economise the heat from the fire or
furnace of vertical boilers. For this purpose the flame and heated
products of combustion from the fire-place pass out therefrom into an
outer or surrounding chamber formed at or about the level of the fire-
box, and having traversed this chamber to near the opposite side from
the admission thereto the flame and heated products are conducted up
by an inclined channel to a second ring or surrounding chamber, along
which the heated products pass around the boiler to again near the
opposite side thereof, so as thereby to effect nearly a double circulation
round the boiler in horizontal channels. Any smoke or remaining heated
products may then pass away to the flue or they may be conducted into
a third surrounding channel similar to those described, and thence to
the flue, and so on when desired. These surrounding channels or
chambers are each formed by linings and divisions of fire-brick, and the
whole is enclosed in a casing or surrounding cylindrical iron jacket.
This jacket for convenience of construction I generally form in two
parts joined at or about the centre of its height, as thereby increased
facility is obtained for filling in the fire-brick lining and the partitions.
I also form the brickwork forming the horizontal partitions inclined
towards the boiler, and also so that that forming the outer lining of the
channels may be thicker at the lower than at the upper surface thereof.
Passages are formed at intervals for clearing the flues,

page_text: the accompanying Drawings proceed to describe means pursued by me
in carrying the same into effect.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows an external plan view and Figure 2 a front view of a
vertical steam engine boiler, with the parts thereof arranged according
to my Invention; Figure 3 represents a vertical section; Figure 4, a
sectional plan taken about the line A, A, of Figure 2; Figure 5 repre-
sents a sectional plan taken about the line B, B, of Figure 2; and
Figure 6, a sectional plan taken about the line C, C, of Figure 2. In
each of these Figures the same letters indicate corresponding parts.
a, a, is the outer case or metal jacket, which for convenience of con-
struction is formed in two parts, which are joined together by flange
pieces a¹, a¹; b is the water space of the boiler, which is of the ordinary
character, arranged partly to surround the fire-chamber or furnace c;
d is the fire-door for the supply of fuel and for general attention to the
fire-place; e, f, and g, are three chambers or annular spaces successively
to receive the flame and products of combustion generated by the fuel
burnt in the fire-place c. According to one arrangement of these parts.
the whole of the flame and products of combustion generated in the
fire-place c pass therefrom by a passage e¹ into the first annular chamber.
or flue space e, as indicated by the arrows 1, 1, in Figures 2 and 4, and
after making an almost entire circulation of that flue space e such flame
and products of combustion are arrested by the wall e* in that flue space,
and thence flow upwards through an opening in the floor or partition
between the annular chamber or flue space e near the wall e², as indicated
by the arrow (2), Figure 2, into the annular chamber or flue space f
around which the flame and products of combustion thence pass until by
the inclined portion f* of the floor f' of that chamber f, aided by a
corresponding inclined portion 93 of the floor g¹ of the upper chamber g,
such flame and products of combustion are directed, as indicated by the
arrow (3) into the upper annular chamber or flue space g, nearly around
which they circulate to the chimney h, as indicated by the arrow (4);
i is the pipe from a blower, which may be used if desired to increase the
draft in the chimney h.
In like manner
may other succession of annular flue spaces he-

page_text: The fire-brick linings to these flue spaces are inclined on their inner
surface from their upper parts respectively, and the divisions between
also incline on their upper surfaces to the boiler. j,j, are passages by
which to examine and clear the flues.
In some cases I arrange the parts so that in place of the whole of the
flame and products of combustion passing into and having to circulate
around the lower flue space e I in place of the partition e' apply one
across the opening e¹ from the fire-place c, somewhat as indicated by the
dotted lines e*, when a portion only of the flame and products of com-
bustion from the fire-place c will pass in the direction of the arrow (1),
and the remainder will pass in the opposite direction, as indicated by the
dotted arrow (5), in Figures 2 and 4, until these two portions of flame
and products of combustion become again united, and together pass up
through an opening in the partition f¹ into the chamber f, and thence
to the chamber g, as already described. This passage for the combined
portions of flame and products of combustion from the chamber e to the
chamber I in this case form at the front of the flue space or at the
opposite side of it to that of the passage e¹ in order thereby better to
divide the action of the respective currents, but this may be varied.
Having thus described my Invention and means which I adopt in
carrying the same into effect, I would have it understood that I do not
confine myself to the precise arrangements of parts as shown, as
variations may be made therein without departing from the peculiar
character of my Invention, but what I do claim is, the arranging or
combining parts for heating vertical steam engine boilers, whereby the
flame and products of combustion generated in the fire-place pass in
succession into and around horizontal flue spaces surrounding the boiler,
and the lining of the flue spaces of such boilers is formed by fire-brick
with inclined surfaces, substantially as described.
In witness whereof, I, the said John Booth, have hereunto set my
hand and seal, this Ninth day of October, in the year of our
Lord One thousand eight hundred and seventy-four