AN TAM AD INDRAWS IN STEAM BOILERS
Year: 1859

page_text: LETTERS PATENT to William Horton, of Smethwick, in the County of
Stafford, Boiler and Gasholder Manufacturer, for the Invention of "AN
TAM AD INDRAWS IN STEAM BOILERS"
PROVISIONAL SPECIFICATION left by the said William Horton at the
Office of the Commissioners of Patents, with his Petition, on the 10th
December 1859.
I, WILLIAM HORTON, of Smethwick, in the County of Stafford, Boiler
and Gasholder Manufacturer, do hereby declare the nature of the said In-
vention for "AN IMPROVEMENT OR IMPROVEMENTS IN STEAM BOILERS," to be as
follows:-
My Invention relates to such steam boilers, as have an internal flue or
internal flues running throughout their whole length, and consists of the
method hereinafter explained of arranging or disposing vertical and horizontal
tubes in the said flue or flues, whereby a greater extent of heating surface is
exposed to the flame and heated air than in steam boilers of the ordinary
construction.
I will explain my Invention, with reference to a cylindrical steam boiler
with flat ends having a single internal flue. In the centre of the flue of the
boiler, and beyond the furnace I place a series of vertical tubes equidistant
from each other, the said series of tubes extending from the furnace to the end

page_text: of the flue. The upper and lower ends respectively of the said tubes,
open into and communicate with the water space at the top and bottom of the
flue. Between the said vertical tubes and the sides of the flue, I place
horizontal tubes, that end of each of the said tubes nearest the furnace of the
boiler being curved upwards and opening into the water space above the flue.
The other end of each of the said horizontal tubes opens and communicates
with the water space at the end of the boiler. I prefer to make the diameter
of the said horizontal tubes somewhat greater than that of the vertical ones,
but I do not limit myself thereto. The flame and heated air from the furnace
circulate about the said vertical and horizontal tubes, in addition to impinging
on the cylindrical surface of the flue, and heat the water in the said tubes and
boiler. I do not limit
I do not limit myself to any particular number or size of the said
tubes, as the same may be varied to suit the boiler to which they are
applied.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Horton in the Great Seal Patent Office on the
1st June 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HORTON, of Smethwick, in the County of Stafford, Boiler and Gasholder
Manufacturer, 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 Lord
One thousand eight hundred and fifty-nine, in the twenty-third year of ller
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said William Horton, Her special licence that I, the said William Horton, my
executors, administrators, and assigns, or such others as I, the said William
Horton, 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 "AN IMPROVEMENT OR IM-
PROVEMENTS IN STEAM BOILERS," upon the condition (amongst others) that I, the
said William Horton, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly 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

page_text: the Great Seal Patent Office within six calendar months next and immédiately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Horton, do hereby declare
the nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say :-
My Invention relates to such steam boilers as have an internal flue or
internal flues running throughout their whole length, and consists of the
method hereinafter explained and illustrated in the accompanying Drawing,
of arranging or disposing vertical and horizontal tubes in the said flue or flues,
whereby a greater extent of heating surface is exposed to the flame and heated
air than in steam boilers of the ordinary construction.
In the accompanying Drawing I have represented a cylindrical steam boiler,
with flat ends, and having an internal flue, the said boiler being constructed
according to my Invention. Figure 1 represents a longitudinal vertical
section of the boiler, and Figure 2 a horizontal section of the same; Figure 3 re-
presents a front elevation, and Figure 4 a back elevation, the brickwork setting
being in section; Figures 5 and 6 represent vertical transverse sections; Figure 5
being taken through the line a; Figure 1 and Figure 6 through the line b,
Figure 1. The same letters are employed to indicate coresponding parts in
the several Figures. c, c, are two furnaces fed at the fire doors d, d. The said
furnaces open into the central flue e. I place a series of vertical tubes f,ƒ, in
the central flue e. The series of tubes f, f, extends nearly from the furnaces
c, c, to the chimney end g of the flue e. The upper and lower ends of the
tubes ff, respectively open into and communicate with the water space at the
top and bottom of the flue e. Between the vertical tubes f, f, and the sides of
the flue e I place horizontal tubes h, h. That end of each of the tubes h, h,
which is nearest the furnace is curved upwards and opens into the water space
above the flue e at i. The other end of each of the horizontal tubes h, h, curves
downwards and opens into the water space at the bottom of the flue e at k,
near the chimney end of the boiler. I prefer to make the diameter of the
horizontal tubes h, h, somewhat greater than that of the vertical tubes f,f, but
I do not limit myself thereto. The flame and heated air from the furnaces c, c,
circulate about the vertical and horizontal tubes f, f, and h, h, in addition to
impinging on the inner surface of the flue e. The heat of the fire is thereby
more effectually absorbed, and the generation of steam promoted. I do not
limit myself to any particular number or size of the tubes f, f, and h, h, as the
number and size of the said tubes may be varied to suit the boiler to which
they are applied. The flame and heated air after passing from the flue e at g,

page_text: return by the sides of the boiler along the flues l, l, and descend through the
vertical flues m, m, to the flue n underneath the boiler, from thence the heated
air and products of combustion pass to the chimney at o.
Having now described the nature of my Invention, and the manner of
carrying the same into effect, I wish it to be understood, that I do not limit
myself to the precise details herein described and illustrated, as the same may
be varied without departing from the nature of my Invention; but I claim
as my Invention the general arrangement of vertical and horizontal tubes in
the central flue or flues of steam boilers, as herein-before described and illus-
trated in the accompanying Drawing.
In witness whereof, I, the said William Horton, have hereunto set my
hand and seal, this Thirty-first day of May, in the year of our Lord
One thousand eight hundred and sixty.
Witness,
GEORGE SHAW.
WILLIAM HORTON. (L.S.)