Improvements in Steam Boilers.
Year: 1898

page_text: Date of Application, 15th Feb., 1898-Accepted, 19th Mar,, 1898
Improvements in Steam Boilers.
I, WINAND WILLIAM JOSEPH TOUSSAINT, of 203, Aspinwall Avenue, Brookline, in
the County of Norfolk, and State of Massachusetts, United States of America,
Architect, 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 :-
This invention has reference to improvements in steam boilers, and particularly in
upright boilers.
The object of the invention is to more fully utilize the heat in its passage from the
fire box to the chimney.
Another object of the invention is to simplify the construction of the boiler.
Another object of the invention is to so construct a boiler, having a return fire
tube system, that the tubes may be more readily cleaned than as heretofore
constructed.
Another object of the invention is to improve the connections between the
direct and the return tubes, and the securing devices for such connections.
The invention consists in the combined fire box and feed water heater, and the flue.
connecting section mounted thereon, in combination with the boiler section, mounted
on the flue section, and having direct tubes located above the fire box and return
tubes connecting with the flue section.
The invention also consists in the tubular connections between the direct tubes and
the return tubes, and in the means for securing such connections.
The invention also consists in such other novel features of construction and
combination of parts as shall hereinafter be more fully described and pointed out in
the claims.
Figure 1 represents a front elevation of the improved boiler partially in vertical
section.
Figure 2 represents a top plan view of the same with the dome removed.
Figure 3 represents a plan view of the flue section.
Figure 4 represents an enlarged detail view of a portion of one of the tubes, shown
in relation to its connecting elbow.
Similar numbers of reference designate corresponding parts throughout.
In the drawings 5 represents the base, or ash pit, which may be of any usual
construction, being furnished with a door through which ashes may be removed.
At the upper portion of the ash pit is mounted a grate 6 forming the lower portion of
the fire box.
The fire box is mounted on the upper end of the ash pit and consists of an annular
water chamber 7, boxed between its walls around the opening for the fire door 8;
this water chamber is provided with the usual inlet pipe as 9 and with the outlet 10
connecting with the shell of the boiler. The water passing through this chamber of
the fire box is raised in temperature before entering the boiler.
On the combined fire box and feed water heater is mounted the flue section 11,
annular in shape, and having the partition 12 in its front portion, and the partition 13
extending from its rear inner wall into the flue connection 14. Openings are formed

page_text: in the outer wall of this section for the purpose of entering cleaning scrapers, doors
as 15 being supplied for closing these openings.
The boiler proper is mounted on the flue section, and comprises a shell 16 having
the lower tube plate 17 and the upper tube plate 18 in which the tubes are secured,
and the dome 19, on the tube plate 18 is axially secured the bolt 20 furnished with
the nut 21. In the tube plates are secured the double system of tubes; namely, the
direct tubes 22 disposed above the fire box, and the return tubes 23 near the
peripheries of said plates, and connecting at their lower ends with the flue section.
The direct and the return tubes are secured in the tube plates in any usual manner.
At their upper ends they are connected in pairs by means of the elbow connections 24,
which have cup shaped ends 25 fitting over the upper ends of the tubes 22 and 23 of
each pair, these elbows have the bearing portions 26, and are proportioned in size to
the distance between the direct and return tubes.
On the bolt 20 is secured, by means of the nut 21, the spider 27, having a series of
radial arms 28 and 29 which bear on the bearing portions 26 of the elbows 24, to hold
the elbows in place over their respective pairs of tubes.
The steam outlet 30 is connected with the upper portion of the boiler, or with the
usual steam drum or steam separator.
It will be noticed that both the boiler and the flue section are larger in diameter
than the interior of the fire box, this allows the location of a large body of water in
heating proximity to the fire box. The flue section, being heated from radiation
from the fire box, will impart some of its heat to the water in the boiler.
The gases from the fire box pass up through the direct tubes, then through the
elbows 24 and down the return tubes to the flue section, whence they pass around
under the boiler to the flue connection. In this manner almost all the heating
qualities of the gases are utilized to raise the temperature of the water in the boiler,
the flue section also being raised in temperature by these gases.
The tubes may be readily cleaned by removing the spider 27, and the elbows 24,
and passing a cleaner down through the tubes.
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 :-
Claim 1 In a boiler, the combination with a fire box, and an annular flue section,
of larger diameter than the fire box, mounted thereon, of a boiler section, mounted
on the flue section, and having direct fire tubes disposed above the fire box and
return tubes connecting with the flue section.
Claim 2 In a boiler, the combination with the fire box comprising an annular
water chamber, and a flue section mounted thereon, of a boiler mounted on the flue
section and having a series of direct vertical tubes disposed above the fire box, a
series of return tubes disposed above the flue section and connecting therewith, and
removable connections between the upper ends of each pair of tubes.
Claim 3-The combination, in a boiler, with a fire box, and the annular flue
section 11 mounted thereon, of a boiler section mounted on the flue section and
comprising the plates 17 and 18, a suitable shell, the tubes 22 and 23 secured in said
plates and disposed as described, and a series of elbows for connecting the upper ends
of the tubes in pairs, and releasable means for securing the elbows.
Claim 4 In a boiler, the combination with the fire box having the annular water
chamber 7, and the flue section 11.mounted thereon, of a boiler section mounted on
the flue section and comprising the shell 16 having the tube plates 17 and 18, the
tubes 22 secured in said plates and disposed above the fire box, and the tubes 23
secured in said plates and disposed above the flue section.
Claim 5 In a boiler, the combination with a shell having upper and lower tube
plates, and direct and return tubes secured in said plate, of a series of elbows removably
seated at the upper ends of the tubes and connecting them in pairs, a spider having
arms bearing on the several elbows, and means for securing the spider.
Claim 6-The combination with the fire box having the annular water chamber,

page_text: and the annular flue section 11 mounted thereon, and having the partitions 12 and 13
and the flue connection 14, of the boiler section mounted on the flue section and
comprising the shell 16 having the plates 17 and 18, the plate 18 having the bolt 20
with the nut 21, the tubes 22 and 23 secured in said plates, elbows 24 connecting
the tubes in pairs, and the spider 27 secured on the bolt 21 and having arms as 23
and 29 bearing on the elbows, as and for the purpose described.
Dated this Twenty-fourth day of November, One thousand eight hundred and
ninety-seven.
WINAND WILLIAM JOSEPH TOUSSAINT.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.