Year: 1888

page_text: I ALLAN STIRLING, of Yonkers, in the county of Westchester and State of New
York, United States of America, Gentleman 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
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My invention relates to an improvement in steam-boilers and furnaces thereof and
it consists in the peculiar construction and combination of devices, that will be more
fully set forth hereinafter, and particularly pointed out in the claims
In the accompanying drawings
Fig 1 is a vertical longitudinal sectional view of a steam-boiler and furnace
embodying my improvements
Fig 2 is a vertical transverse sectional view of the same, taken on the line --x of
Fig 1 Fig 3 is a similar view taken on the line y-y of Fig 1
Fig 4 is an enlarged detail view of a portion of the boiler
Fig 5 is a similar view showing the means for securing the man-hole plate to the
boiler
Fig 6 is a similar view showing the means for securing the steam-pipe to the
boiler
A represents the furnace or setting which is built of masonry and is of the form
here shown In one end of the furnace or setting is a fire-box B, having a door, C,
for the admission of fuel The bottom of the fire-box is formed by a downwardly
and rearwardly inclined grate D, the rear end of which is supported by a transverse
wall E which forms the rear side of the ash-pit, F and of the fire-box
G represents a transverse plate which extends upward and forward from the wall E,
and is arranged at an angle as shown in Fig 1 From the upper side of this plate or
partition G projects a forward and upwardly inclined arch, which is arranged over
the major portion of the fire-box
Extending rearward from the said arch is a plate, or partition, 1, which is arranged
at a slight inclination, as shown, and has its rear side turned upward to form the
flange-plate K

page_text: -
The upper portion or roof of that portion of the furnace which is arranged over
the fire-box is inclined upward and rearward as shown in Fig 1 and is arched
concentrically with the arch H, as shown in Fig 3 and is provided on its under side
with series of ascending shoulder- or steps L M represents the body of the
boiler consisting of plates a riveted together as shown, and the sud body of the boiler
is supported in the upper portion of the furnace or setting at such an angle that the
water in the front portion of the boiler is deepest where it is exposed to the greatest
degree of heat The upper and lower sides of the boiler are connected by a series of
bolt or brace rods 6 shewn separ itely at fig 5 which have their lower ends screwed
into the lower side of the boiler, and their upper ends provided with screw threads
and extending through openings in the upper side of the boiler as shown Nuts c
are screwed onto the said upper portions of the bolt or brace rods and bear against
the upper and lower sides of the top of the boiler so as to secure the same from
expansion under pressure On the top of the boiler is the usual man-hole, which is
covered by a plate, d and a steam-escape pipe e having a flange fat its base
The upper ends of some of the brace or bolt rods 6 piss also through the man
hole plate and through the flange of the steam pipe so as to secure the same firmly
in position on the boiler is shown in detail at Figs 5 and 6
NO represent two series of water tubes which depend fron the lower side of the
boiler and are arranged at right angles thereto
The lower ends of the said water-
tubes are closed and the upper ends thereof are open and communicate with the boiler
The series of tubes N are shorter than the tubes O and the lower ends of said tubes N
are almost in contact with the upper side of the plate I
P represents a pirtition plate which extends downward from the bottom of the
boiler at a suitable distance in rear of the flange-plate K, the lower end of said
plate P extending to within a suitable distance of the lower ends of water-tubes O
The said plate or partition P together with the plates K 1 G, arch H, and steps L,
are made of any suitable refractory material which will withstand the action of
intense heat
At the rear upper corner of the furnace or setting is the escape-flue or chimney R
S, represents a water supply pipe which communicates with the body of the boiler
T represents mud-drum which is cylindrical in shape, is arranged transversely on
the rear side of the wall E, and is connected to the body of the boiler by means of
pipes U
A blow-off pipe V extends from the said mud-drum and is provided with a stop-
cock W
The operation of my invention is as follows -The heat and products of combustion
are deflected forward from the fire box by the plate or partition G and the arch H
and pass upward and rearward under the steps L, around the tubes -N and -O,
are then deflected downward by the partition P, and pass upward in rear of said
partition to the flue or chimney R from which they escape
The partition plates and arch H by intercepting the caloric currents, utilize the
heat to the highest degree The steps L form heating-surfaces which become
intensely heated by the fire, and the gases generated by combustion come in contact
with the said steps and are caused to burn and give out additional heat, and are
thereby prevented from escaping idly from the furnace and consequently the fuel is
entirely utilized
The peculiar construction of the boiler hereinbefore described, provides the same
with a maximum amount of heating surface
The water-tubes increase the heating surface of the boiler and maintain a constant
circulation of water, and by inclining the boiler as shown and described, the water
therein is deepest at the point where the boiler is exposed to the most intense heat
and a large space is formed at the rear upper side of the boiler for steam, thus
obviating the necessity of employing a steam dome in order to obtain dry steam
The drum T receives the sediment deposited by the water in the boiler, and when
a quantity of mud or sediment collects in the drum the same may be blown out by
opening the valve or stop cock W in the blow-off pipe V

page_text: 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 18
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1 The furnace having the steps L arranged over the fire box, for the purpose set
forth, substantially as described
2 The steam boiler having the brace or bolt rods connecting the sides for the
purpose set forth, substantially as described
3 The boiler having the brace or bolt rods b, said rods having one end secured to
one side of the boiler and projecting through the opposite side thereof, and the nuts c,
screwed to the said projecting ends of the bolts or braces, substantially as described
4 The combination of the furnace and the boiler arranged at an angle so as to cause
the water therein to be deepened in that portion of the boiler which is exposed to the
most intense heat
5 The combination of the boiler having the depending water tubes, the drum T
arranged at a distance below the boiler, the pipes U connecting the said drum to the
boiler and the blow-off pipe having the stop-cock or valve W substantially as
described
6 The steam boiler furnace having the fire box provided with the downward and
forward inclined grate D, the wall E forming the rear side of the fire box, the
partition G extending upward and forward from the said wall and the arch H
extending upward and forward from the upper side of the said partition, substantially
as described
7 The setting, the boiler supported thereon, the fire box in the front of the setting
and having the arch H over its rear portion and the rearward and upward inclined
series of steps L extending from over the front portion of the fire-box to the boiler
substantially as described
8 The combination of the boiler having the depending water tubes and the furnace
or setting in which the boiler is located, provided with the fire box having the arch H
and the partitions 1 P to direct the caloric currents between the water tubes,
substantially as described
9 The steam boiler having the man hole plate and the steam pipes provided with
the flange and the brace or bolt rods connecting the sides of the boiler and extending
through the man hole plate and the flange f substantially as described
10 The combination of the inclined boiler, the setting_supporting the same, and
having the rearward and upward inclined series of steps L extending to the lower
portion of the boiler and the fire box arranged under the series of steps L whereby
the latter direct the most intense heat to that portion of the boiler where the water is
deepest, substantially as described
11 Á steam boiler furnace having the fire-box provided with the grate D, the
wall E, supporting one end of the grate and forming the rear side of the fire box, the
forwardly-inclined and upwardly-extending plate or partition G, rising from the wall,
and the forward and upwardly inclined arch H extending from the partition or plate
and arranged over the major portion of the fire-box as set forth
12 A steam boiler furnace having the fire-box provided with the grate D, the
wall E, supporting one end of the grate and forming the rear side of the fire-box, the
forward inclined and upwardly-extending plate or partition G rising from the wall
and the forward and upwardly inclined arch H extending from the partition or plate
and arranged over the major portion of the fire box and the plate or partition I
extending rearwardly from the arch, H as set forth
13 A steam-boiler furnace having the fire-box provided with the grate D, the
wall E supporting one end of the grate and forming the rear side of the fire box, the
forward-inclined and upwardly-extending plate or partition G, rising from the wall,
and the forward and upwardly inclined arch H, extending from the partition or plate
and arranged over the major portion of the fire box, the upper portion or roof of the
furnace over the fire-box being inclined upward and provided on the underside with
the ascending shoulders or steps L as set forth.

page_text: 14 A steam boiler furnace having the fire-box provided with the grate D, the
wall, E, supporting one end of the grate and forming the rear side of the fire box the
forward-inclined and upwardly extending plate or partition G, rising from the wall,
and the forward and upwardly inclined arch H extending from the partition or plate
and arranged over the major portion of the fire-box, the plate or partition I extending
rearwardly from the arch, H, the upper portion or roof of the furnace above the fire-
box being inclined both upward and rearward and provided on the under side with
ascending shoulders or steps, as set forth
15 In combination with the furnace having the arch H, over the fire-box the roof
over the fire-box being arched concentrically with the arch H, and provided with the
steps L, as set forth
16 The combination of the boiler having the depending long tubes O at its rear
portion and the depending shorter tubes N at its front portion, with the furnace
supporting the boiler and having the fire box at its front end and the partition, I,
extending rearward therefrom under the short tubes N, and the depending partition P
arranged among the tubes O, substantially as described
17 The steam boiler having the man-hole plate and the steam pipe provided with
the flange, and the bolt-rods 6 having one end screwed to one side of the boiler and
projecting through the opposite side thereof and through the flange of the steam pipe
and the man-hole plate, the said projecting ends of the bolts having the nuts, c,
substantially as described