Year: 1891

page_text: Date of Application, 22nd June, 1591-Accepted, 31st Oct., 1891
Figure 4 is an end elevation of my improved boiler showing a double fire box..
Figure 5 is a cross sectional view of my improved boiler showing a double
fire box.
Like letters of reference refer to like parts throughout the Specification and
drawings.
In carrying out my invention, A, represents the shell of the boiler, B, the steam
dome, C, C, the shells containing the fire boxes, D, the grate bars and E, the
fire wall. Thus it will be observed by reference to Figure 2 that the heat passes
over the fire wall E, fills the combustion chamber L, and is radiated out through
the shells C, C, into the water surrounding them.
As the shells C, C, are adjacent to the surface of the water they will heat the
upper stratum of the water first and generate steam therefrom without having to
raise the water in the bottom of the boiler shell to a steam temperature. The heat
that is not radiated out through the shells C, C, passes from the combustion
chamber L down and. through the tubes Flocated in the lower part of the boiler
and is absorbed by the colder water in the bottom of the boiler shell from said
tubes. The smoke &c. passes through said tubes and back underneath the shell
of the boiler to the chimney fluc, the course being indicated by arrows.
Thus it will be seen that the heat not absorbed and radiated-out through the
shells C, C, is taken up by the colder water in the bottom of the boiler shell
surrounding the tubes F whilst the products of combustion are passing through
said tubes. To assist the circulation of the water in the boiler I partly surround
each of the shells C with a deflecting plate O divided above and below the vertical
axis of said shell so that the water can freely circulate around said shell and assist
the contents of the boiler to become more quickly heated, the colder water
entering at the lower opening passes up and around the shells C and out through
the top.
The object of this construction is to heat the upper stratum of the water to the
proper temperature and quickly convert it into steam without being compelled to
raise the whole of the contents of the boiler to the same temperature; thus it will
be seen that in a boiler constructed on this principle that it is possible to get
steam up in a very short period of time, and once steam has been got up from the
upper stratum of the water, the lower strata is raised to the same temperature as
the upper stratum by the downward circulation of the heated products, and the
surplus heat from the combustion chamber passing through the tubes F.
Another feature of my invention is the feed water heater G, which consists of a
circular chamber extending from the rear end of the boiler through and beyond
the front end, serving not only as a feed water heater and settling chamber but

page_text: also as a stay-rod or brace for the end portion of the shell.
At the front end of
the feed water heater G is a water inlet, g, and a suitable blow-off-valve g¹.
Located within, and extending nearly the full length of and adjacent to the top of
said feed water heater G, is a perforated outlet pipe H, which enters the body of
the boiler and through which the boiler is supplied with water. The feed water
entering the heater G at the inlet,.is.allowed to settle in this chamber and there
deposit any foreign substances which may be in the water. When the level of the
water has risen to the perforated outlet pipe H it passes thence into the boiler.
A valve Hoperated by a stem H controls the passage of the water from the
outlet pipe H into the boiler. By means of this feed water heater or settling
chamber all foreign substances such as dirt, lime and the like are settled and.
collected therein and may be blown off by opening the blow off valve gl. A boiler
constructed on this principle can be used either as a stationary, locomotive, portable
or marine boiler; and I would be understood as including in my invention any and
all of the above different forms since the essential feature of my invention consists
in locating the fire boxes within the shell of the boiler and adjacent to the surface
of the body of water whereby the top or upper stratum of the water is first heated
to a steam temperature and kept in a state of perfect circulation by means of the
deffecting plates surrounding the fire shells C, C, and whereby the heat not
utilized in the combustion chamber L is passed through suitable tubes F in the
bottom of the boiler and surrounded by the body of water.
Another material advantage of my construction is the fact, that should it be
desired to clean the settling chamber out, the operator has only to close the outlet
valve H. This cuts off the boiler pressure and the chamber being extended out
beyond the face of the boiler as shown at G¹, and being provided with a flange
plate or manhole G", by the removal of the latter all sediment or settlings can
be readily cleaned out; while the steam pressure in the boiler is still maintained.
K; is a door whereby admittance can be gained to the flues or tubes F to clean
them.
While I have above described my boiler as a steam boiler, I would have it
understood that it is equally applicable to hot-water boilers or circulators.
Having now particularly described and ascertained the nature of my said inven-
tion; and in what manner the same is to be performed, I declare that what I
.claim is:
1. In a boiler, the combination with the shell, of two fire boxes located within
said shell and adjacent to the surface of the body of water, whereby the surface
of the water is first heated to the required temperature, substantially as described.
2. In a boiler, the combination with the shell, of a fire-box located within said
shell; adjacent to the surface of the water; and a series of tubes or flues located
within the shell of the boiler and beneath the said fire-box, said fire-box and flues
connected together, whereby heat leaving the fire-box can be returned through
the flues, substantially as described.
3. In a boiler, the combination with the shell, of a heater or settling chamber
located within said chamber extending lengthwise of the boiler provided with an
outlet H, located adjacent to its top, substantially as described.
4. In a boiler, the combination with the shell of a heater or settling chamber
located' therein, said chaniber extending lengthwise of the boiler, and one end
projecting beyond the face of the boiler, a valve controlling the outlet from the
chamber, and a man-hole in the projecting end, substantially as described.
5: In a boiler; the combination with the shell, of two fire-boxes located within
said shell adjacent to the surface of the body of water, flues connected therewith
and extending within the shell beneath the said fire-boxes, and a settling chamber
located therein, through which the water is passed before entering the boiler,
stibstantially as described.
6: In a boiler; the conibination with the shell, of a feed water heater. G,
extending froin the rear end of the boiler through and beyond the front, and

page_text: provided at its front end with a water inlet g, and a suitable blow-off valve g', and
at the rear end with an outlet H, rising to a point adjacent to the top of the
chamber, substantially as described.
7. In a boiler, the combination with the shell, of a fire box located within said
shell, the centre of which is below the centre of the shell of the boiler, the body
of water adjacent to and beneath the fire box, whereby the surface of the water
is first heated to the required temperature, substantially as described.
8. In a boiler the combination with the shell, of a fire box located within said
shell and adjacent to the surface of the body of water, a series of tubes located
below and connecting with said fire-boxes, a feed water heater located above the
said fire-boxes, a valve controlling the outlet from said heater, and a manhole in
one end of said heater, substantially as described.
9. In a boiler, a feed water heater located above said fire boxes extending from
the rear to the front of the said boiler, an inlet in the front of said heater and an
outlet at the rear of the said heater, and a manhole in one end of said heater,
substantially as described.
10. In a boiler, the combination with the shell and two fire-boxes located within
said shell and adjacent to the surface of the body of water, a series of tubes located
below and communicating with said fire-boxes, a feed water heater located above
and between said fire-boxes, a valve controlling the outlet from said heater, and a
man-hole in the end of said heater, substantially as described.
11. In a boiler a shell containing a fire-box located within said boiler adjacent
to the surface of the body of water, a deflecting plate surrounding said shell and
having openings at top and bottom, a series of tubes located below and com-
municating with said fire-boxes, a feed water heater located within and between
said fire boxes, a valve controlling the outlet from said heater and a man-hole in
said heater, substantially as described.
12. In a boiler the combination with the shell, of a fire box located within said
sheli adjacent to the surface of the body of water, whereby the surface of the
water is first heated to the required temperature, a deflecting plate surrounding
said shell for the purpose of creating a perfect circulation, substantially as
described.
13. In a boiler the combination with the shell of a fire box located within said
shell adjacent to the surface of the body of water, a deflecting plate partially
enclosing said shell for the purpose of giving better circulation to the water within
the boiler, a series of tubes or flues located within the shell of the boiler and
beneath the said fire box, said fire box and flues connected together whereby
heat leaving the fire boxes may be returned through the flues, substantially as
described.
14. In a boiler, the combination with the shell, of a heater or settling chamber
located within the boiler and secured to the front and rear ends, said chamber
extending lengthwise of the boiler and provided with an outlet H located adjacent
to its top, a deflecting plate surrounding said shell for the purpose of giving better
circulation to the water within the boiler, substantially as described.
15. In a boiler, the combination with the shell, a circular deflecting plate partly
surrounding said shell for the purpose of giving better circulation, of a heater or
settling chamber located therein, said chamber extending lengthwise of the boiler,
and one end projecting beyond the face of the boiler, a valve controlling the
outlet from the chamber, and a man-hole in the projecting end, substantially as
described.
16. In a boiler, the combination with the shell, a circular deflecting plate partly
surrounding said shell for the purpose of giving better circulation, of two fire boxes
located within the shell adjacent to the surface of the body of water, flues connected.
therewith and extending within the shell beneath the said fire-boxes, and a settling
chamber located therein, through which the water is passed before entering the
boiler, substantially as described.
17. In a boiler, the combination with the shell, a circular deflecting plate partly

page_text: surrounding said shell for the purpose of giving better circulation, of a feed water
heater G, extending from the rear end of the boiler through and beyond the front,
and provided at its front end with a water inlet g, and a suitable blow-off-valve g¹,
and at the rear end with an outlet H, rising to a point adjacent to the top of the
chamber, substantially as described.
18. In a boiler, the combination with the shell, a circular deflecting plate partly
surrounding said shell for the purpose of giving better circulation, of a fire-box
located within said shell, the centre of which is below the centre of the shell of
the boiler the body of water adjacent to and beneath the fire box whereby the
surface of the water is first heated to the required temperature, substantially as
described.
19. In a boiler the combination with the shell a circular deflecting plate partly
surrounding said shell for the purpose of giving better circulation, of a fire-box
located within the said shell and adjacent to the surface of the body of water, a
series of tubes located below and connecting with said fire-boxes, a feed water
heater located above the said fire-boxes, a valve controlling the outlet from said
heater, and a manhole in one end of said heater, substantially as described.
Dated this 22nd day of June 1891.
WHITE & WOODINGTON,
27, Southampton Buildings, London, Agents.