Improvements in Sectional Tubular Steam Generators.
Year: 1889

page_text: Date of Application, 12th Mar., 1889
Complete Specification Left, 12th Dec., 1889-Accepted, 18th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Sectional Tubular Steam Generators.
I, CHARLES LINCOLN SEABURY, of Morris Dock Station, in the City, County, and
State of New York, United States of America, Mechanical Engineer, do hereby
declare the nature of this Invention to be as follows:-
This invention has for its object to obtain in a tubular steam-generator, the greatest.
possible heating surface within the least space and to ensure a free circulation
throughout the apparatus with facility for readily reaching every part thereof for
repairs.
It consists in the novel combination and arrangement of its several parts, as is
hereinafter more particularly described.
The fire-box, the ash-pit, and the grate-bars of the furnace for this improved.
boiler or steam-generator are enclosed and provided with doors, and dampers in the
customary manner.
Large horizontal pipes are mounted, one on each side of the fire-box to extend
the length thereof at about the level of the grate-bars. The rear ends of these
lateral pipes are closed. Their front ends project out through the front wall of the
fire-box and are severally connected, by means of branch pipes, with a central,
vertical drum, properly supported at the front of the boiler on the outside thereof,
with its lower end elevated above said horizontal pipes and its upper end extending
to the top of the boiler.
.
The branch pipes are nearly of the same diameter as the lateral horizontal or basal
pipes, and their connection with the outer drum is made by means of a valve-
chamber which is fitted to the side of the drum to project therein at a short
distance above the bottom thereof, and to which the branch pipes are both coupled.
Communication is established between the drum and the valve-chamber by means
of a large port, governed by a valve, opening into the valve-chamber and adapted
to close automatically under the influence of an overbalancing pressure therein.
The fire-box is overarched by a double series of transverse pipes, preferably
slightly curved from end to end, and which are coupled at each end with the
underlying, lateral, basal pipe, by means of vertical connecting-pipes.
The two basal pipes are thus made to serve as lateral circulating-manifolds,
and free communication is established between them through each of the transverse
pipes.
The couplings of the vertical pipes connecting the basal and transverse pipes are
of suitable character to form steam-tight joints and yet allow of a ready detachment
of either of the transverse-pipes without disturbing any of the others.
An inner tube is carried concentrically through each transverse pipe and through-
the plug or partition closing each end thereof.
A series of small vertical tubes are inserted through openings in the upper
side of each transverse pipe and screwed into the upper side of its inner concentric
tube.
These small upright tubes, projecting from the transverse pipes, extend nearly to
the top of the furnace and are left open, and each is enclosed by a larger, concentric,
standing tube closed at its upper end and which is screwed at its lower end into
the opening in the transverse pipe through which the enclosed upright-tube
projects.
Communication is thus established between each transverse, inner tube through
the standing, concentric tubes with the transverse pipe, and each transverse pipe
with its series of upright or standing tubes, constitutes a detachable, steam-
generating manifold or section in the boiler.

page_text: A steam-drum is mounted centrally above the tops of the standing tubes in a
direction parallel with the lateral circulating-tuanifolds and each of the inner tubes of
the transverse steam-generating manifolds is connected by a pipe with said drum, the
connecting pipe being formed with a return bend, filling the space in the furnace
above the standing tubes on each side of the drum.
The front end of the steam-drum opens directly into the outer vertical drum,
being connected thereto by a suitable coupling, and is provided with a hood or
deflecting-plate fitted over its open end to cause the steam passing out thereinto to
be diverted downward so as to precipitate any water carried therewith.
The steam-delivery pipe is fitted to the top of the outer vertical drum.
The feed-water pipe for the boiler, is preferably carried with horizontal return
bends back and forth in the top of the furnace above the standing-pipes of the
steam-generating manifolds, and is finally led to the valve-chamber with which it is
connected.
Each lateral circulating-manifold is provided with a blow-off cock at its outer end.
The furnace is enclosed above the fire-box in a suitable outer casing, the side
walls of which are adapted to he readily detached, preferably in sections, to admit
of being taken down in order to reach the detachable steam-generating manifolds
or sections and permit of the removal and replacement of any one of them.
The top of the furnace is covered in by the casing and fitted with a smoke-stack
or fiue in the usual manner.
Dated this 10th day of Kobruary 1980
CHARLES LINCOLN SEABURY.
COMPLETE SPECIFICATION.
Improvements in Sectional Tubular Steam Generators.
1, CHARLES LINCOLN SEABURY, of Morris Dock Station, in the City, County and
State of New York, United States of America, Mechanical Engineer, do hereby
declare the nature of this invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :—
In the accompanying drawings,
Figure 1 is a front elevation of my improved sectional steam-boiler; Fig. 2 a
central vertical section in line r, r, of Fig. 1, and Fig. 3 a cross-section in line y. y,
of Fig. 2.
My invention has for its object to obtain in the least space the greatest possible
heating surface for the water and steam, with a free circulation throughout the
boiler and facility for readily reaching every part thereof for repairs.
It consists in the combination and arrangement with each other and with the
necessary adjuncts, as hereinafter particularly described and claimed, of a series of
vertical concentric tubes arranged over the fire-box and within the heating-chamber
of the furnace in detachable sections, as set forth.
In the accompanying drawings, A represents the fire-box, B the ash-pit, and
C the grate-bars, of the furnace for the boiler, the same being inclosed by suitable
walls and provided with doors and dampers in the customary manner.
D, D, are large horizontal pipes mounted one on each side of the fire-box to
extend the length thereof at about the level of the grate-bars. The rear ends of
these lateral pipes are closed. Their front ends project out through the front wall
of the fire-box and are severally connected by means of branch pipes D', D', with
a central vertical drum, E, properly supported at the front of the boiler on the out-
side thereof, with its lower end elevated above said basal pipes D, D, and its upper
end extending to the top of the boiler.
The pipes, D', are nearly of the same diameter as the lateral pipes D, and their
connection with the drum E is made by means of a valve-chamber, F, which is fitted
to the side of the drum to project therein at a short distance above the bottom
thereof, and to which the pipes D₁, D', are both coupled.

page_text: Communication is established between the drum E and the valve-chamber F by
means of a large port governed by a valve, G, opening into the valve-chamber.
and adapted to close automatically under the influence of an overbalancing pressure.
therein.
The fire-box A is overarched by a double series of transverse pipes, H, H, H,
preferably slightly curved from end to end, and which are coupled at each end with
the underlying lateral pipe D by means of vertical connecting-pipes H1, H¹. The
two lateral pipes are thus made to serve as circulating-manifolds, and free com--
munication is established between them through each of the transverse pipes H.
The couplings of the vertical pipes H¹, H', are of suitable character to form steain-
tight joints and yet allow of a ready detachment of either of the transverse
pipes from the lateral manifolds D, D, without disturbing any of the others..
An inner tube, J, is carried concentrically through each transverse pipe H and
through the plug or partition W, Fig. 3, closing each end of said pipe. A series-
of small vertical tubes, K., K, are inserted through openings in the upper side of each
pipe H and screwed into the upper side of its inner concentric tube, J. These upright
tubes K, K, extend nearly to the top of the furnace and are left opon, and each is
inclosed by a larger concentric standing tube, L, closed at its upper end and which
is screwed at its lower end into the opening in the pipe H, through which the.
inclosed upright tube K projects. Communication is thus established between each
transverse inner tube, J, through the standing concentric tubes K and L with the
transverse pipe H, and each transverse pipe H, with its series of upright or
standing tubes, constitutes a detachable steam-generating manifold or section in the
boiler.
A steam-drum, M, is mounted centrally above the tops of the standing tubes L, L,.
in a direction parallel with the lateral manifolds D, D, and each of the inner
tubes, J, of the transverse steam-generating manifolds H, H, is connected by a
pipe, N, with said drum, the connecting pipe N being formed with a return-bend,.
as shown at N' in Fig. 3, filling the space in the furnace above the standing
tubes L, L, on each side of the drum M. The front end of the steam-drum M opens.
directly into the vertical drum E, being connected thereto by a suitable coupling,
and is provided with a hood or deflecting-plate, P, (see Fig. 2,) fitted over its
open end to cause the steam passing out thereinto to be diverted downward, so as to-
precipitate any water carried therewith.
The steam-delivery pipe Q is fitted to the top of the vertical drum E.
The feed-water pipe R for the boiler is preferably carried with horizontal_return-
bends back and forth in the top of the furnace above the standing pipes L, L, of
the steam-generating manifolds H, H, (see Fig. 3 and dotted lines, Fig. 2,) and is
finally led to the valve-chamber F, with which it is connected. Each lateral circulating--
manifold is provided with a blow-off cock, S, at its outer end.
The furnace is inclosed above the fire-box in a suitable outer casing, the side
walls of which are adapted to be readily detached, preferably in sections, to admit of
being taken down in order to reach the detachable steam-generating manifolds or
sections H, H, and permit of the removal and replacement of any one of them.
The top of the furnace is covered in by the casing and fitted with a smoke stack.
or flue, T, in the usual manner.
In the operation of this improved sectional boiler the heat and products of
combustion of the fuel on the grate C, C, pass up freely around and between the
pipes of the stean-generating manifolds H, H, and around the steam-drum M, and
between the coils N¹ of the steam tubes N, N, and of the feed-water pipe R above
them before passing off through the smoke-stack T. The feed-water, heated more.
or less in its passage through the coils of pipe in the top of the furnace, is.
delivered into the valve-chamber F, its flow thence into the drum E being
prevented by the valvo G, which will close under the pressure of the feed-water..
The water will therefore pass from said chamber F through the pipes D' into the
lateral circulating-manifolds D, D, and thence through upright pipes H³ into the
several transverse steam-generating manifolds H, and, flowing around the tubes J, J,.

page_text: inclosed therein, will pass up into the upright tubes L and rise therein to the
desired water-level, to be converted into steam by the exposure of said pipes to the
direct heat of the fire. The steam generated in the manifolds H, H, will pass up
the standing pipes L thereof, thence down the central inner tubes, K, and out
through the connecting-pipes N and N to the drum D, and it is subjected con-
tinuously in its course through said tubes, as well as in the drum M, to the heat of
the furnace, so as to be dried thereby.
From the drum M the steam passes freely into the vertical separating-drum E,
being deflected downward therein by the hood P. Any water possibly carried over
with the steam will thereby be separated and discharged into the drum E, and any
excess of water accumulating from this source in said drum will pass by means of
the valve G back into the circulating-pipe D', while the steam is left free to pass
perfectly dry up into the delivery-pipe Q.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination, in a sectional steam-boiler with its fire-box and furnace, and
with lateral circulating-manifolds placed one on each side of the fire-box and con-
nected with a water-supply pipe, of a series of detachable steam-generating manifolds
or sections mounted in the furnace over the fire-box, each consisting of a transverse
pipe spanning the fire-box and connected at each end to corresponding vertical tubes
in the two lateral manifolds, an inner tube inclosed within the transverse pipe and
whose open ends project beyond the closed end of said pipe, a series of upright tubes
closed at their upper end and whose lower ends are fitted to the transverse pipe to
communicate freely therewith, open-ended upright tubes fitted to said inner tube to
communicate therewith and extend therefrom up into the upright closed tubes nearly
to the top thereof, and discharge-tubes connecting the two ends of the transverse
pipe with a suitable delivery-pipe, substantially in the manner and for the purpose
herein set forth.
2. The combination, in a sectional steam boiler, of the lateral manifolds D, D, the
interposed detachable manifolds E, H, the standing pipes L, L, fitted to said detach-
able manifolds, the inclosed tubes J, K, the steam-delivery pipes N, connected with
said inclosed tubes, and a steam-drum, M, to which all of said delivery-pipes
are connected, substantially in the manner and for the purpose herein set forth.
3. The combination, in a sectional steam-boiler, of the lateral manifolds D, D, the
interposed detachable manifolds H, H, the standing pipes L, L, fitted to said detach-
able manifolds, the inclosed tubes, the steam-delivery pipes N, connected with said
inclosed tubes, a vertical drum, E, connected mediately at its upper end with said
steam-delivery pipes and at its lower end with the two lateral manifolds, and a water-
supply pipe communicating therewith, substantially in the manner and for the purpose
herein set forth.
4. The combination, in a sectional steam-boiler, of the lateral circulating-manifolds,
the interposed detachable steam-generating manifolds, the standing pipes fitted to
said detachable manifolds, the connected tubes inclosed in the standing pipes and
detachable manifolds, the steam-delivery pipes connected with said inclosed inner
tubes, a vertical drum connected mediately at its upper end with said steam-delivery
pipes, a valve-chamber communicating with the lower end of said drum and with
the two lateral circulating-manifolds, a valve controlling the communication with the
drum and opening inwardly into the chamber, and a water-supply pipe connected
with said chamber, substantially in the manner and for the purpose herein set
forth.
Dated this 12th day of December 1889.
HERBERT J. ALLISON,
Agent for the Applicant.