AN IMPROVEMENT IN THE CONSTRUCTION OF BOILERS, WHEREBY A CONSIDERABLE SAVING IN FUEL IS EFFECTED, AND SMOKE RAPIDLY CONSUMED
Year: 1821

page_text: TU ALL то
PRESENTS SHALL COME, 1, HENRY
BROWNE, of Derby, in the County of Derby, Chemist, send greeting.
WHEREAS I, the said Henry Browne, did, my petition humbly repre-
sent to His present most Excellent Majesty, that, after much study and labour,
I had found out and invented "AN IMPROVEMENT IN THE CONSTRUCTION OF
BOILERS, WHEREBY A CONSIDERABLE SAVING IN FUEL IS EFFECTED, AND SMOKE
RAPIDLY CONSUMED," which I conceived would be of great public utility; and
that the same had not been made or used by any other person or persons, to
to my knowledge and belief; and I humbly prayed His said Majesty to grant
unto me, my executors, administrators, and assigns, His Royal Letters Patent
under His Great Seal of the United Kingdom of Great Britain and Ireland,
for the sole use, benefit, and advantage of my said Invention within that part
of His said Majesty's United Kingdom of Great Britain and Ireland called
England, His Dominion of Wales, and Town of Berwick upon Tweed, for the
term of fourteen years; and His said Majesty, being willing to give encourage-
ment to all arts and inventions that might be for the public good, was graciously
pleased to condescend to my request; and therefore, by His Royal Letters
Patent, bearing date at Westminster, the Sixteenth day of March, in the
second year of His reign, of His special grace, certain knowledge, and mere
motion, did, for Himself, His heirs and successors, give and grant unto me, the
said Henry Browne, my executors, adininistrators, and assigns, His especial
licence, full power, sole privilege and authority, that I, the said Henry

page_text: Browne, my executors, administrators, and assigns, and every of them, by
myself and themselves, and such other persons as I, the said Henry Browne,
my executors, administrators, or assigns, should agree with, and no others,
from time to time and at all times thereafter during the said term of years
therein expressed, should and lawfully might make, use, exercise, and vend the
said Invention within that part of His said Majesty's said United Kingdom of
Great Britain and Ireland called England, His Dominion of Wales, and Town
of Berwick upon Tweed, in such manner as to me, the said Henry Browne,
my executors, administrators, and assigns, or any of them, should in my or
their discretion seem meet; and that I, the said Henry Browne, my executors,
administrators, or assigns, should and lawfully might have and enjoy the whole
profit, benefit, and advantage from time to time coming, growing, accruing,
and arising by reason of the said Invention, for and during the term of years
therein mentioned, to have, hold, exercise, and enjoy the said licence, powers,
privileges, and advantages therein granted or mentioned to be granted unto
nie, the said Henry Browne, my executors, administrators, and assigns, for
and during and unto the full end and term of fourteen years from the date of
the said Letters Patent next and immediately ensuing, according to the Statute
in such case made and provided; in which said Letters Patent is contained a
proviso that if I, the said Henry Browne, should not particularly describe and
ascertain the nature of my said Invention, and in what manner the same is to
be performed, by an instrument in writing under my hand and seal, and cause
the same to be inrolled in His said Majesty's High Court of Chancery within
four calendar months next immediately after the date of the said Letters Patent,
then that the said Letters Patent, and all liberties and advantages whatsoever
thereby granted, should utterly cease and become void, as in and by the said
Letters Patent, relation being thereunto had, may more fully appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Henry Browne, do hereby declare that the nature of ny said Invention, and
the manner in which the same is to be performed, are particularly described
and ascertained in and by the Drawing hereunto annexed, and the following
description thereof (that is to say) :-
My Invention consists in the addition D to some boilers, and in the addition
or alteration J in others, according to the differently constructed boilers already
in use, or hereafter to be made, as shewn in the aforesaid Drawing as examples,
and herein-after stated, and which addition and alteration respectively contain
water or other fluids, and being so disposed the same is heated in a speedy and
effectual manner, causing at the same time the principal part of the smoke
produced from the fuel employed to be rapidly consumed, decomposed, or

page_text: converted into flame by bringing it into contact with the ignited fuel previously
to its entering into the flues or chimneys, and thus also rendering it more
effectual in heating the water or other fluids contained in the boilers, and
causing a considerable saving in the fuel employed.
I shall now proceed to describe several methods of carrying my said Invention
into effect by a reference to the Drawing affixed to this Specification, and by
way of clucidating the subject. But I do not intend hereby to limit myself
to the methods described in the said Drawing only, but to avail myself of every
other means of adapting my said Invention, by which the same effects can be
produced, according to the construction of different boilers. In the Drawing,
Figures 1 to 6 inclusive represent a boiler set in .brickwork, and which boiler
is ordinarily composed of the cylinders or tubes A, B, and C, and is known,
from its Inventor, by the name of Woolfe's boiler, in which Figures A repre-
sents the larger cylinder or tube; and B, C, the two smaller ones. To this
boiler I have added another tube or cylinder D, which may be either round or
oval, as the depth of the fire-place may require, which is so posited to contract
the fire-place at E, and cause the smoke produced from the burning fuel upon
the grate to descend and become ignited or converted into flame, as aforesaid,
previously to its entering the flues F, F, &c. and the stack or chimney G; all
other passages from the fire-place to the chimney being closed by brickwork or
otherwise. This tube or cylinder D is supplied with water or other fluid, either
by means of the pipes H, H, which proceed from it and enter into the larger
cylinder A on each side of it, or by means of a pipe or tube I, into which the
water or other fluid may be injected by means of a pump or by the pressure of
a column of water of a suflicient height to effect the purpose of supplying the
tube D. Figures 7, 8, and 9 shew a method of applying the tube D to a
boiler (A), commonly known by the name of the waggon boiler, and which is to
be supplied with water or other fluid, either from the boiler by the tubes H, H,
or by means of the pipe I, as in the former case, the space between the tube D
and the bottom of the boiler A being filled up with brickwork or otherwise, as
in the boiler before described. Figures 10 to 14 inclusive represent another
waggon boiler (A), differing in shape from that last mentioned, and in which,
as well as in all other boilers, except tube boilers, I produce similar beneficial
effects to those described, but in a somewhat different manner; as in place of
the tube D, I here make an addition to the bottom of the boiler at J, and
which is filled with water or other fluid from the boiler of course, but being
first posited so as to contract the fire-place at E, as the tube D and brickwork
do in the methods before described, the water or other fluid becomes sooner
heated, and the effect of the fuel employed is very considerably encreased, and

page_text: the principal part of the smoke produced from the fuel rapidly consumed or
converted into flame, or decomposed, as aforesaid. I have likewise added other
provisions or contrivances to this boiler, which may or may not be employed at
pleasure, and whereby I also considerably encrease the effects of the fuel in
heating the water or other fluids. These consist in surrounding the fire-place
with water, by forming the sides of the boiler double at K, K, K, and also
placing over the fire a pipe or tube L, which is filled with water or other fluid
from the boiler. These two last-mentioned provisions or contrivances, however,
I do not mean or intend hereby to claim as of my Invention, such having been
employed before. The fuel to be employed of course should not be permitted
to pass to the back of the grate under D or J (as the case may be) until the
same has parted with the principal part of the gas or smoke which is emitted
on its first ignition. Figure 1 of the Drawing is an end section of the tube,
boiler, and brickwork, taken at the line M, M, in Figures 2, 4, 5, and 6;
Figure 2 is a longitudinal section of the same, taken at the lines N, N, &c. in
Figures 1, 2, 4, 5, and 6; Figure 3 is an end section of the same, taken at
the line O, O, in Figures 2, 4, 5, and 6; Figure 4, a plan of the same, taken
at the line P, P, in Figures 1, 2, and 3; Figure 5, another plan of the same,
Q, Q, in Figures 1, 2, 3; Figure 6, another plan of the same, taken at the line
R, R, in Figures 1, 2, and 3; Figure 7 is a side view of a waggon boiler,
and section of the brickwork, taken at the line S, S, in Figure 9; Figure 8,
an end section of the same, taken at line T, T, in Figures 7 and 9; Figure 9,
a plan of the brickwork, &c., taken at the lines U, U, in Figures 7 and 8;
Figure 10, a side view of another waggon boiler, and section of the brickwork,
taken at the line V, V, Figure 12; Figure 11, a section of the same boiler and
brickwork, also taken at the line V, V, in Figure 12; Figure 12, a plan and
section of the same, taken at the line W, W, in Figures 10, 11, 13, and 14:
Figure 13, an end section of the same, taken at the line X, X, &c. in Figures
10, 11, and 12; and Figure 14, an end view of the same; in all of which
Figures the same letters of reference apply to the same parts.
In witness whereof, I, the said Henry Browne, have hereunto set my
hand and seal, the Tenth day of July, in the year of our Lord One
thousand eight hundred and twenty-one.
HENRY BROWNE. (L.S.)
Signed, sealed, and delivered by the within-named
Henry Browne (being first duly stamped), in the
presence of us.

page_text: AND BE IT REMEMBERED, that on the same Tenth day of July, in the
in year above mentioned, the aforesaid Henry Browne came before our Lord
the King in His. Chancery, and acknowledged the Specification aforesaid, and
all and everything therein contained, in form above written. And also the
Specification aforesaid was stamped according to the tenor of the Statute
in that case made and provided.