IMPROVEMENTS IN BOILERS AND FURNACES
Year: 1862

page_text: LETTERS PATENT to Henry Eastwood, of the Firm of John Eastwood
and Son, of Elland, in the County of York, Machine Makers, for the
Invention of "IMPROVEMENTS IN BOILERS AND FURNACES."
Sealed the 24th April 1863, and dated the 30th October 1862.
PROVISIONAL SPECIFICATION left by the said Henry Eastwood at the
Office of the Commissioners of Patents, with his Petition, on the 30th
October 1862.
I, HENRY EASTWOOD, of the Firm of John Eastwood and Son, of Elland,
in the County of York, Machine Makers, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN BOILERS AND FURNACES," to be as
follows:
This Invention relates to boilers and their furnaces or apparatus for the
generation of steam, and the improvements consist in combining and arranging
or constructing tubular boilers, particularly those with vertical tubes, in the
flues, or such as are constructed according to the Specification of a Patent
granted to William and John Galloway, of Manchester, dated 11th March,
No. 13,552,A.D. 1851, with furnaces having hollow bars and downdraught,
[Price 8d.1

page_text: also having
a furnace of ordinary fire-bars underneath similar to those for
which Letters Patent were granted to James Robinson, of Huddersfield, dated
20th September, No. 2027, A.D. 1854, whereby a great amount of heating
surface is obtained, a rapid circulation of the water therein is produced, the
fuel economized, and the smoke consumed.
The accompanying outline Drawing is a longitudinal and vertical section of
such combined boiler and furnace, which will more clearly explain the manner
of combination and arrangement thereof.
A is the boiler with vertical tubes, water spaces, or passages B placed in the
flue according to the Specification of William and John Galloway's Patent
referred to; C is the upper furnace having hollow grate bars Dconnected to a
water space E, which also forms the dead plate; the draught or products of
combustion from this furnace pass down through the said bars and betwixt
the bridges F to the flue; G is a furnace with ordinary grate bars H; the pro-
ducts of combustion from this furnace also pass betwixt the bridges F to the
flue, as described in James Robinson's Specification referred to; I are apertures
to admit air to the upper furnace, the air to the lower furnace being admitted
through the grate bars H from the ash-pit J as usual.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Eastwood in the Great Seal Patent Office on the
30th April 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
EASTWOOD, of the Firm of John Eastwood and Son, of Elland, in the County of
York, Machine Makers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of October, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Henry Eastwood, Her special licence, that I, the said Henry Eastwood,
my executors, administrators, and assigns, or such others as I, the said
Henry Eastwood, 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 "IMPROVEMENTS IN

page_text: BOILERS AND FURNACES," upon the condition, amongst others, that I, the
said Henry Eastwood, 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 calen:lar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Henry Eastwood, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement and the accompanying Sheet of Drawings:-
This Invention relates to boilers and their furnaces or apparatus for the
generation of steam; and the improvements consist in combining and arranging
or constructing tubular boilers, particularly those with vertical tubes in the
flues, or such as are constructed according to the Specification of a Paten
granted to William and John Galloway, of Manchester, dated 11th March,
No. 13,552, A.D. 1851, with furnaces having hollow bars and downdraught,
and also having a furnace of ordinary fire-bars underneath, similar to those
for which Letters Patent were granted to James Robinson, of Huddersfield,
dated 20th September, No. 2027, A.D. 1854, whereby a great amount of
heating surface is obtained, 'arapid circulation of the water therein is produced,
the fuel economized, and the smoke consumed.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a front elevation of a boiler with its furnaces or fire-places con-
structed according to this Invention, and Fig. 2 is a longitudinal and vertical
section of the same taken through the line A, B; Fig. 3 is a vertical cross
section taken through the line C, D, and Fig. 4 is a horizontal section of the
same taken through the line E, F. It is of the cylindrical form with one
fire-box, but having two furnaces or fire-places G and H. The fire-box is
joined to an oval fire-flue, in which are a series of vertical tubes or water
passages I opening at each end with the interior of the boiler. The grate
bars of the furnace G are made of wrought-iron tubing open at one end to
the boiler above the flue, and at the other to a water space J, which opens
at each end to the boiler, and also forms the dead plate. The grate bars of the
furnace Hare of the ordinary kind with an ashes place Kunderneath, and there
is a bridge of brick or fire-clay L to the back as usual. Both furnaces are
provided with doors, and those to the upper are perforated to admit air. The

page_text: upper furnace is supplied with coal, and the flame and smoke or gases pass
down through the grate bars to the flue. The under furnace is fed with coke
and the incandescent fuel or cinder falling from the upper furnace, the
flame and intense heat from which arising and passing towards the flue
comes in contact with and ignites the unconsumed gases and carbonaceous
matter passing from the upper furnace. The intense heat of the fires acting
on the hollow grate barsgenerates steam rapidly, which is constantly passing
into the steam chamber of the boiler, and water is supplied thereto from the
water space, so that a continuous current or circulation is maintained through
these tubes; also the great heat in the flue acting on the vertical tubes
produces in like manner a continual passing of the water from the bottom of
the boiler to the upper part, and thereby obtaining a more uniform tem-
perature of the water, consequently more equal expansion and contraction of
the parts, and therefore less wear and tear in boilers. It will also be observed
that this boiler possesses agreat amount of heating surface whereby steam is
generated very. rapidly, and with great economy of fuel. .
In conclusion I would observe that I have herein shewn and described
the application of my Invention to a single fire-box boiler of the cylindrical
class, but it will be readily perceived that the said Invention may be applied
to double fire-box boilers of any class having internal flues, whether for
stationary, locomotive, or marine use.
And I would have it understood that I do not claim any of the parts
separately as of my Invention, nor do I confine myself to the precise details
herein shewn and described, as it will be evident that various modifications
may be made as for instance instead of vertical tubes in the flues horizontal
or slightly inclined tubes may be employed; also a series of longitudinal tubes,
or a single longitudinal tube may be used, such tube or tubes being arranged
to communicate with the water in the bottom of the boiler at one end, and
the upper part thereof at the other, so as to obtain a circulation of the water
by the action of the heat from the furnaces on the said tubes; also that the
fire-box or furnaces and the hollow bars may be constructed, combined, and
arranged in various other forms, but I prefer the construction, combination,
and arrangement herein set forth.
Having thus fully described the nature of my said Invention, and the
manner in which the same is or may be performed or carried into practical
operation, I claim as of my Invention the combining, arranging, and con-
structing tubular boilers with furnaces having hollow grate bars and down-
draught, and ordinary furnaces underneath in manner and for purposes

page_text: substantially as herein described and illustrated by the accompanying Sheet of
Drawings.
In witness whereof, I, the said Henry Eastwood, have hereunto set my
hand and seal, this Twenty-eighth day of April One thousand eight
hundred and sixty-three.
Signed, sealed, and delivered by the
within-named Henry Eastwood in
the presence of
WM. TASKER,
Patent Agent,
Halifax.
HENRY EASTWOOD. (L.S.)