A NEW AND USEFUL IMPROVEMENT IN STEAM-BOILER CHIMNEYS
Year: 1853

page_text: LETTERS PATENT to Israel P. Magoon, of the State of Vermont,
of the United States of America, for the Invention of "A NEW
AND USEFUL IMPROVEMENT IN STEAM-BOILER CHIMNEYS."
:
Sealed the 23rd March 1853, and dated the 31st January 1853.
'PROVISIONAL SPECIFICATION left by the said Israel P. Magoon
at the Office of the Commissioners of Patents, with his Petition,
on the 31st January 1853..
I, ISRAEL P. MAGOON, of the State of Vermont, of the United
States of America, do hereby declare the nature of the said Inven-
tion for "A NEW AND USEFUL IMPROVEMENT IN STEAM-BOILER CHIMNEYS"
to be as follows:-
Heretofore water vessels have been applied to surround the
chimney of the furnace of a steam boiler, the water therein being
heated by the heat passing up the chimney.
Now this Invention consists of applying over the upper end of the
chimney a water vessel in connection with the other water vessel
in such manner that the heated products passing from the
chimney come against the under surface of the water vessel, and
are deflected off, and surround and heat the upper vessels.
The waste steam from the exhaust pipe of the engine io also

page_text: SPECIFICATION in pursuance of the conditions of the Letters
Patent, filed by the said Israel P. Magoon in the Great
Seal Patent Office on the 20th July 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
ISRAEL P. MAGOON, of the State of Vermont, of the United States of
America, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent, bearing date the Thirty-first day of January,
A.D. 1853, in the sixteenth year of Her reign, did, for Herself,
Her heirs and successors, give and grant unto me, the said Israel P.
Magoon, Her special license that I, the said Israel P. Magoon, my
executors, administrators, and assigns, from time to time and at
all times thereafter during the term expressed therein, should and
lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, and other Dominions and
Possessions of Her said Majesty as therein expressed, my Invention
of "A NEW AND USEFUL IMPROVEMENT IN STEAM-BOILER CHIMNEYS," upon
"condition (amongst others) that I, the said Israel P. Magoon,
by an instrument of writing under my hand and seal, should par-
ticularly describe the nature of my Invention, and in what manner
the same is to be performed, and cause the same to be filed in the
Great Seal Patent Office, or as otherwise directed in said Letters
Patent, within six calendar months next and immediately after the
date of the said Letters Patent.
NOW KNOW YE, that I, the said Israel P. Magoon, do hereby
declare the nature of my Invention, and what manner the same
is to be performed, to be particularly described and ascertained in
the following Specification and the accompanying drawings, letters,
figures, and references thereof, that is to say:
The nature of the said Invention consists, first, in so combining
with a water heater, made to surround the chimney of the furnace
of a steam.generator, and to be heated by the smoke and volatile

page_text: products of combustion, or, such and waste steam passing through
such chimney, another vessel or water heater and a deflector, that
such deflector shall not only form the bottom of the said vessel,
but that the smoke or smoke and exhaust steam may be made to
heat said vessel by impinging against the deflector.
Second, in causing the waste steam from the exhaust pipe of the
engine of such steam boiler to be introduced into the secondary
vessel or water heater, and there condensing it before it is carried
back to the supply tank of the boiler.
The said Drawing represents a transverse central and vertical
section of a locomotive engine chimney, and its exhaust steam or
blast pipes, and my improvements applied thereto.
In the said Drawings B denotes the boiler; E, E, the two steain
exhaust or blast pipes; which are usually introduced into the smoke
box, and discharge the waste steam from the engine cylinders into
the chimney C, for the purpose of increasing the draft thereof; P, is
what is termed the chimney pipe, it being a hollow vertical tube
opening out of the smoke box, and serving to convey the smoke and
steam therefrom directly up against the bottom of the deflector R.
This pipe makes part of a water heating cylinder or vessel W, that
entirely surrounds it, and has a pipe w, leading out of its lower
part. Such pipe may be supposed to be connected to a force
pump that extracts water from the tank of the engine tender, and
forces it through the pipe w, and into the heater W. The deflector
R makes part or the bottom of a hollow steam-tight vessel H, which
is made above it, and which is connected with the heater W by means
of one or more pipes w¹, w¹, that lead out of the upper part of the
heater and into the lower part of the vessel H. A pipe w²
having its mouth within the vessel H, and near the top of the
same, as seen in the Drawing, opens out of the said vessel H, and is
lead through its bottom or the deflector R, and down through
the tube P, and out of the smoke box, from thence it may be
supposed to be led to the tank of the tender, it being made to open
into the said tank at or near its top part. Out of the top
or upper part of either one or both the steam exhaust.jet pipes
E, E, a tube J is carried upwards through the chimney, and

page_text: made to open into the upper part of the vessel H, or into that
of the heater W. Each tube J, is provided with a stop-cock or
gate a, by which its throat or recieving orifice may be diminished
in size, in order to regulate the amount of steam to be admitted
into and thrown up the said tube from the blast pipe. The
lower end of the tube J, or that part of it connected with the
blast pipe, is so arranged that a portion of the waste steam that is
blown up the blast pipe may be caused to enter the pipe J, while the
remainder of it is discharged out of the discharging mouth of the
blast pipe, and serves to maintain the draft of the chimney. The
stem of the valve a, is seen at o, as proceeding to the outer side of
the smoke box. The wire netting or cap of the chimney is seen at
b, the water that is forced into the heater W fills it, and passes
out of it through the pipes w¹, 1, and into the vessel II; from
thence it passes into the pipe w², and through it to and is dis-
It is well known that a
charged into the tank of the tender.
column of smoke or steam made to impinge vertically, or nearly so,
or directly against a surface at or about at right angles to the
direction of such column, will impart to such surface a much
greater quantity of heat than it will when it simply passes over and
in contact with a surface parallel or nearly so to its direction.
Besides this, the tendency of heated air, smoke, or gasses is always
upward, and when made to pass between horizontal or inclined
surfaces they naturally heat the upper of the said surfaces the
most. The advantages gained by combining the vessel H with the
deflector R, the pipe P, and the heater W, as described, and so that
both the smoke and waste steam shall impinge directly against the
bottom of the vessel H, will readily be seen by persons skilled in
the use or art of constructing and using engines and their furnaces
and boilers.
My Invention further consists in combining the blast pipe
directly with the heater in the chimney or the vessel H, by means of a
pipe J, as seen in the Drawing, whereby the steam is made to pass
into the heater or vessel H, and to there condense, and aid in heating
the water therein before the water passes into the tender. By such
an arrangement we make use of a short pipe to convey the steam
.

page_text: from the blast pipe, and thereby get it into the water with less
friction, and pass it in the shape of water, or in a condensed state;
through the long pipe that connects the heater with the tank of the
tender. Should we extend the steam pipe from the blast pipe to and
into the tender there would be two long pipes required when the
heater is used in the chimney; namely, such pipe and a pipe leading
from the heater or the vessel H. The waste steam would pass entirely
through one, while not a particle of it would pass through the other.
By my arrangement the waste steam not only passes through
the pipe J, but in a condensed state it passes through the pipe w²,
and into the tender; the same effecting a saving in the length of
pipe used, besides preventing a considerable loss of heat.
What, therefore, I claim as my Invention is, to combine the vessel
H with the deflector R, the heater W, and the chimney pipe P, sub-
stantially as described, whereby such deflector shall not only form
the bottom of the said vessel H, but that the smoke and exhaust
steam may be made to heat said vessel by impinging against the
deflector as specified.
And I also claim the improvement of throwing the waste steam
directly into the heater or vessel H, and there partially or wholly
condensing it before it is passed into the tank of the tender; not mean-
ing to claim the throwing of it into the tender from the blast pipe,
and through a single pipe connecting the blast pipe and tender, but
the combining the tender and the blast pipe E, and the heater or
vessel H, by pipes, substantially in the manner represented in the
Drawing, whereby the advantages herein-before stated, as well as
others, are obtained.
In witness whercof, I, the said Israel P. Magoon, have hereunto
set my hand and seal, this Twenty-fourth day of June, in
the year of our Lord One thousand eight hundred and fifty-
ISRAEL P. MAGOON. (L. s.)