IMPROVEMENTS IN STEAM BOILERS
Year: 1856

page_text: LETTERS PATENT to William Galloway and John Galloway, both of
Manchester, in the County of Lancaster, Engineers, for the Invention
of "IMPROVEMENTS IN STEAM BOILERS."
Sealed the 1st November 1856, and dated the 22nd May 1856.
PROVISIONAL SPECIFICATION left by the said William Galloway and
John Galloway at the Office of the Commissioners of Patents, with their
Petition, on the 22nd May 1856.
We, WILLIAM GALLOWAY and JOHN GALLOWAY, do hereby declare the nature
of the said Invention for IMPROVEMENTS IN STEAM BOILERS, to be as follows:-
We construct boilers with one or more fires or furnaces, from whence the
products of combustion pass upwards or downwards through conical pipes,
surrounded by water and placed with their smaller ends upwards. The pro-
ducts of combustion afterwards pass through horizontal or inclined tubes
surrounded by water. A large amount of heating surface is thus obtained,
and a power of generating steam in proportion to the heating surface and
peculiar form, character, and position of such cones. Thus, we construct a
boiler adapted for marine purposes with two furnaces, inclosed in two cylin-
drical tubes or flues, placed side by side, and connected by one common
chamber at their back ends beyond the fires. This chamber is separated from
another chamber above it by a horizontal water space, which is traversed by

page_text: an assemblage of conical fire tubes or flues, placed vertically with their smaller
ends upwards. From this chamber the products of combustion pass through
a series of horizontal return tubes to a smoke box at the front end. of the
boiler, from which they pass up the chimney. The chamber may be stayed
and strengthened by conical water tubes placed with their larger ends upwards,
and these conical water tubes may be used in combination with the conical
fire tubes above mentioned. Various other forms of boilers may be constructed
with the aforesaid conical fire tubes.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Galloway and John Galloway in the Great Seal
Patent Office on the 4th November 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
GALLOWAY and JOHN GALLOWAY, both of Manchester, in the County of
Lancaster, Engineers, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of May, in the year of our Lord
One thousand eight hundred and fifty-six, in the nineteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said William Galloway and John Galloway, Her special licence that we, the
said William Galloway and John Galloway, our executors, administrators,
and assigns, or such others as we, the said William Galloway and John
Galloway, our executors, administrators, and assigns, should at any t 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 STEAM
BOILERS," upon the condition (amongst others) that we, the said William
Galloway and John Galloway, our executors or administrators, by an instru-
ment in writing under our or their hands and seals, or under the hand and
seal of one of us or them, 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 we, the said William Galloway and John Galloway,
do hereby declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and

page_text: by the following statement thereof, reference being had to the accompanying
Drawing, and to the figures and letters marked thereon, that is to say:-
We construct boilers with one or more fires or furnaces, from whence the
products of combustion pass upwards or downwards through conical pipes,
surrounded by water and placed with their smaller ends upwards. The
products of combustion afterwards pass through horizontal or inclined tubes
surrounded by water. A large amount of heating surface is thus obtained,
and a power of generating steam in proportion to the heating surface and
peculiar form, character, and position of such cones.
The accompanying Drawing represents a pair of boilers constructed accord-
ing to our Invention, and adapted for marine purposes.
Figure 1 is a plan, partly in section; Figure 2 is a transverse section through
different parts of the two boilers; Figure 3 is a longitudinal section. The
same letters refer to similar parts in each Figure. The two boilers being
similar, it will be sufficient to describe one of them. A, A, are two furnaces,
inclosed in two cylindrical tubes or flues B, B, placed side by side, and con-
nected by one common chamber C at their back ends beyond the fires. This
chamber C is separated from another chamber D, placed above it, by a hori-
zontal water space E, which is traversed by an assemblage of conical fire tubes
or flues F, F, F, placed vertically with their smaller ends upwards. From
the chamber D the products of combustion pass through a series of horizontal
cylindrical return tubes G, G, G, to a smoke box H at the front end of the
boiler, from which they pass up the flue I into the chimney or funnel K. The
chambers C and D are stayed and strengthened by conical water tubes L, L,
and M, M, placed with their larger ends upwards, or by cylindrical water
tubes N, N. O, O, is the shell of the boiler; P is a steam chamber con-
nected to the two boilers. The conical fire tubes F are omitted at those places
in which they would interfere with the water tubes. By making the fire tubes
F of conical form, and placing them with their smaller ends upwards, the
ascent of the steam from their outer surfaces is facilitated. It is advisable to
make these conical fire tubes F of larger diameter than the horizontal cylin-
drical tubes G, so that the flame may not be cooled and extinguished before the
gases are completely burned, or nearly so. By constructing the boiler in this
manner, we avoid in a great degree the deposit of soot, which is apt to occur
in ordinary tubular boilers when fired with coal.
.
The conical fire tubes F and the water tubes L, M, and N may be slightly
inclined from the vertical position, and the tubes G may also be slightly inclined
from the horizontal position, if required.
The arrangement of the parts may also be varied; thus, the furnaces may

page_text: be made to change places with the tubes G. The flame and products of com-
bustion will then enter the chamber D, and descend through the conical fire
tubes F into the chamber C, whence they will pass through the horizontal
tubes G to the chimney.
The number of furnaces may also be varied, and other modifications may
be made in the arrangement and proportions of the boiler; but in all cases it
will contain an assemblage of vertical or nearly vertical conical fire tubes, and
an assemblage of horizontal or nearly horizontal cylindrical fire tubes.
Having now described the nature of the said Invention, and in what
manner the same is to be performed, we wish it to be understood that what
we claim is,-
First, constructing steam boilers with an assemblage of vertical or nearly
vertical conical fire tubes, in combination with an assemblage of horizontal or
nearly horizontal cylindrical fire tubes, as herein-before described.
Second, constructing steam boilers with an assemblage of vertical or nearly
vertical conical fire tubes, in combination with vertical or nearly vertical water
tubes, and an assemblage of horizontal or nearly horizontal cylindrical fire
tubes, as herein-before described.
In witness whereof, we, the said William Galloway and John Galloway,
have hereunto set our hands and seals, this Third day of November, s
in the year of our Lord One thousand eight hundred and fifty-six.
Witness,
WILLIAM NEWTON,
Knott Mill Iron Works.
Manchester.
WILLIAM GALLOWAY.
JOHN GALLOWAY.
(L.S.)
(L.S.)