IMPROVEMENTS BOILERS FOR GENERATING STEAM, AND IN APPARATUS CONNECTED THEREWITH FOR HEATING THE FEED WATER
Year: 1868

page_text: LETTERS PATENT to Charles John Galloway, of the City of Manchester,
in the County of Lancaster, Engineer, and Charles Herbert Holt, of
the same Place, Engineer, for the Invention of "IMPROVEMENTS
BOILERS FOR GENERATING STEAM, AND IN APPARATUS CONNECTED THEREWITH
FOR HEATING THE FEED WATER."
Sealed the 12th January 1869, and dated the 17th July 1868.
PROVISIONAL SPECIFICATION left by the said Charles John Galloway
and Charles Herbert Holt at the Office of the Commissioners of
Patents, with their Petition, on the 17th July 1868.
We, CHARLES JOHN GALLOWAY, of the City of Manchester, in the
County of Lancaster, Engineer, and CHARLES HERBERT HOLT, of the
eame Place, Engineer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN BOILERS FOR GENERATING STEAM, AND IN APPARATUS
CONNECTED THEREWITH FOR HEATING THE FEED WATER," to be as follows:-
The improvements relate to adaptations by which economy in the use
of the fuel employed for heating purposes and general facility in use
are obtained.

page_text: According to one arrangement the boiler is divided into two parts.
the upper portion of which is supported over the fire space, the other is
of a ring form or other suitable shape placed below the main portion and
connected thereto by tubes, which we prefer to surround or form the
fire-box; such ring is adapted to receive the sediment, which may be
removed therefrom by suitable taps or outlets. The upper and under
surfaces of the upper portion of the boiler are connected together by
means of tubes, which are considerably larger in diameter at the upper
than at the lower end, and serve both as stays and flue passages. The
diameter of each tube under its upper flange should be equal at least to
the outer diameter of the flange at the lower end thereof. To prevent
the too free passage of heated products up these flue passages we apply
underneath, and at a short distance from the lower end of each of them
in the fire-box, a ball or hollow water chamber, which is connected above
and below with the water in the boiler by suitable tubes. The upper
portion of the boiler may be continued down and serve as a jacket or
water space surrounding the fire.
According to another arrangement the boiler is formed by a number
of chambers placed in a horizontal or but slightly inclined direction over
the fire. Each of these chambers is connected by a series of vertical pipes
with another horizontal or but slightly inclined chamber above. The
upper series of chambers communicates by a pipe from each with a
transverse chamber, and that communicates by vertical pipes with
another transverse chamber below, and which by horizontal or slightly
inclined pipes communicates with each of the first-mentioned chambers,
by which circulation of water between all the parts of the boiler is
maintained. The heated products from the fire rise between the lower
chambers and the series of vertical pipes, and in passing between the
upper series of chambers they tend to superheat the steam contained in
the upper portions of those chambers. In heating the water for the
supply of steam boilers by means of water pipes applied in the flue it is
usual to apply dampers to regulate the draft, and the object of one part
of the improvements in heating the water for such and other boilers is
to obtain a subdivision or more equal distribution of the currents of
heated products to act on the feed water by employing a number of small
valves, or dampers, or passages, each of which is capable of regulation, in
place of a large one, and we give the up-and-down motion to the scrapers
for clearing the external surface of the feed water heating pipes by

page_text: means of external and internal gearing,
mangle motion.
or what is commonly called the
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles John Galloway and Charles Herbert Holt
in the Great Seal Patent Office on the 16th January 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, CHARLES
JOHN GALLOWAY, of the City of Manchester, in the County of Lancaster,
Engineer, and CHARLES HERBERT HOLT, of the same Place, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of July, in the year of
our Lord One thousand eight hundred and sixty-eight, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Charles John Galloway and Charles
Herbert Holt, Her special licence that we, the said Charles John
Galloway and Charles Herbert Holt, our executors, administrators, and
assigns, or such others as we, the said Charles John Galloway and
Charles Herbert Holt, our 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 Inven-
tiou for "IMPROVEMENTS IN BOILERS FOR GENERATING STEAM, AND IN APPARATUS
CONNECTED THEREWITH FOR HEATING THE FRED WATER," upon the condition
(amongst others) that we, the said Charles John Galloway and Charles
Herbert Holt, our executors or adminstrators, by an instrument 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 I, the said Charles John Galloway, on behalf
of myself and the said Charles Herbert Holt, do hereby declare the
nature of the said Invention, and in what manner the same is to be

page_text: performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :-
The improvements relate to adaptations by which economy in the use
of the fuel employed for heating purposes and general facility in use are
obtained.
According to one arrangement the boiler is divided into two parts, the
upper portion of which is supported over the fire space, the other is of a
ring form or other suitable shape placed below the main portion and
connected thereto by tubes, which we prefer to surround or form the fire-
box; such ring is adapted to receive the sediment, which may be removed
therefrom by suitable taps or outlets. The upper and under surfaces of
the upper portion of the boiler are connected together by means of tubes,
which are considerably larger in diameter at the upper than at the lower
end, and serve both as stays and flue passages. The diameter of each
tube under its upper flange should be equal at least to the outer diameter
of the flange at the lower end thereof. To prevent the too free passage
of heated products up these flue passages we apply underneath, and at a
short distance from the lower end of each of them in the fire-box, a ball
or hollow water chamber, which is connected above and below with the
water in the boiler by suitable tubes. The upper portion of the boiler
may be continued down and serve as a jacket or water space surrounding
the fire. Iu heating the water for the supply of steam boilers by means
of water pipes applied in the flue it is usual to apply dampers to regulate
the draft; and the object of one part of the improvements in heating the
water for such and other boilers is to obtain a subdivision or more equal
distribution of the currents of heated products to act on the feed water
by employing a number of small valves, or dampers, or passages, which
are capable of regulation, in place of a large one, and we give the up-and-
down motion to the scrapers for clearing the external surface of the feed-
water heating pipes by means of external and internal gearing, or what
is commonly called the mangle motion.
But that the Invention may be fully understood, we will, by the aid of
the accompanying Drawings, proceed to describe means pursued by us in
carrying the same into effect.
⚫ DESCRIPTION OF THE DRAWINGS.
Figure shows a vertical section, and Figure 2 a horizontal section of
one arrangement of upright boiler according to our improvements.
a is

page_text: the upper portion of the boiler, and 6 the lower portion thereof; this
lower portion b is of a ring form, and is connected to the upper portion
by series of tubes acting as water passages, c, c, surrounding the fire-
box d. The ring 6 is provided with taps or other suitable outlets to
facilitate the removal of sediment therefrom, but such we have not
thought it necessary to show, the same being well understood by boiler
makers and other engineers. h, h, are the pendant water tubes connected
to the upper part of the boiler and descending into the fire-box d; e, e, are
the grate bars; ff, are tubes aiding to connect the upper surface a¹ with
the lower surface a² of the upper portion a of the boiler. These tubes f,f,
it will be seen, are considerably larger in diameter at their upper than at
their lower ends. The diameter of each tube under its upper flange f¹ is
at least equal to the outer diameter of the flange f2 at the lower end
thereof, to facilitate introduction or removal of such tubes. These
tubes f serve both as stays to the upper and lower parts of this portion of
the boiler, and also as flue passages through it. 7, 9, are chambers or
enlarged surfaces suspended by the tubes g' from the plate a², to prevent
the heated products of combustion from the fire too freely passing up the
flue passages f, and at the same time to act in deflecting such heat
advantageously against the pendant water tubes h.
Figures 8 and 4 shew by a vertical section and a horizontal section a
modification of parts of the above, the upper portion a of the boiler in
this case being formed with a shell or annular water space a³ descending
to surround or form the fire-box. In other respects, so far as the parts
of this boiler may be considered similar to that last described, they are
marked with the same letters of reference there used. In this case the
chambers g are shown of a spherical form, but this may be varied; and
they are connected at their upper and under surfaces by pipes g¹, 92, with
the parts of the boiler, which pipes thereby act as passages for the flow
of water through the chambers g.
Figure 5 shows by a horizontal section, and Figures 6 and 7 by vertical
sections, an arrangement of apparatus according to our improvements
to be placed in the flue passage for heating the feed water of steam
boilers. i, i, are a series of boxes or chambers formed with a series of
pipes or tubes j, each of which is formed with a division j¹ therein
extending from near the bottom of its tube ; to the top of its box i,
thereby dividing each tube into two passages. The chambers i, i, are
connected together by pipes or passages k for the flow of the feed water

page_text: successively through the respective chambers i, i, as supplied under
pressure through a feed pipe 1, to pass away from these chambers i, i, to
the boiler by the pipe m. The water in passing through the respective
clambers i, i, passes down one side of each tube j and up the other in
succession, as indicated by the arrows. n, n, is a wall in the flue passage
with a series of openings n therein, for the purpose of dividing the.
current of heat passing from the furnace to the stack into a number of
streams, and the passage through these openings n' is capable of being
regulated by a pair of valves or dampers o, o, each of which is formed
with openings through it corresponding with the openings n¹, and the
amount of flue passage through each opening n' at any time may be
regulated by the movement of the dampers 0, 0, so as to cause them
partially to cover the openings . The dampers o, o, are suspended by
chaius from levers q, which turn upon axes q¹; or there may be a
separate valve or damper to each opening n¹, or to a series dividing them
into sets. rare scrapers operated by chains passing over pullies s on the
shaft t worked by the mangle notion u.
Having thus described our Invention, and means which we adopt
in carrying the same into effect, we would have it understood that we
do not confine ourselves to the precise details shown and described,
as these may be varied; but what we do claim is the adaptation or
combination of means substantially as described in respect of Figures 1,
2, 3, and 4.
Secondly, we claim, when applying in the flue of the furnace apparatus
for heating the feed water to the boiler, the dividing such flue passage
into separate channels or passages capable of being closed by valves so
as to obtain a subdivision or more equal distribution of the currents of
heated products to act on the water passages, in manuer substantially
as described.
In witness whereof, I, the said Charles John Galloway, have
hereunto set my hand and seal, this Fifteenth day of January,
in the year of our Lord One thousand eight hundred and sixty-
nine.
CHARLES JOHN GALLOWAY. (L.B.)