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Патент USA US2410513

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Nov. 5., 1946.
-
H. E. MAY _
LOCOMOTIVE BOILER FIREBOX
FiledSep'h. 4, 1945
2,410,513 ‘
Patent-ed Nov. 5, 194a
" “
UNITED
2,410,513
PATENT OFFICE
2,410,513
BOILER FIREBOX
‘
.lilenry, E. May, Chicago, Ill.
leglplicationeseptember 4, 1945, Serial No. 614,282
‘
6 Claims.
'1
(Cl.122—-—68)
2
1
In the drawing:
This invention relates to improvements in loco
pointed out in’the appended'olaiins'l'
‘
' ‘ "
'
Fig. 1 is a longitudinal vertical sectional view
motive boiler ?reboiies and it" consists of ‘the 'mat
ters hereinafter described anemone‘ particularly
through a locomotive boiler ?rebox embodying
the preferred form of the invention.
" "
‘
Fig. 2 is a transverse vertical sectional view
The invention is more especially concerned with
relatively'wide ?reb'oXes employing at "least ‘three
laterally spaced, longitudinally extendin'g'wa't'er
steaming and ‘circulating elements 'which "con
veniently may be in‘ the" iormbf'the well known
Nicholsonthermic syphons. A syphon‘ or ‘this
; through a part‘of the ?rebox appearing in Fig. 1
as taken ‘on the line 2-'—2 thereof. '
Referring now in detail to‘ that embodiment of
the invention illustrated ‘in the drawing‘, the fire
box therein shown includes a'crown sheet 5'; which
merges into the inner side sheets 5, the inner back
sheet ‘F and inner throat sheet 8, which is con
stituted by the bottom portion of a ?ue sheets.
10
type includes‘ a‘ ?at hollow water wall’that opens
at itstop end through the crown sheet and has
a bulged bottom which form's'a continuation of
The outer back sheet or‘ the boiler ' is indi
an inlet neck in communication with‘a'low‘er' part
15 cated at I0 ; the outer side sheets thereof are'i'ndi
of the boiler of "which the meter; ‘forms a‘ part.
cated at l I-l l and the outer throat sheet'is indi
When three of such elements‘are diseosedm a
cated at 12. Said sheets cooperate with a top
sheet F3 for the boiler in providing the back Water
leg l4,‘ the side water legs l5_i—l 5 and ‘front throat
?rebox, the intermediateon'e ha's‘b'e'en positioned
in the longitudinal central plane of the ?rebox
and th'e'syphonsiare spaced laterally ither'efrer‘n
with the bulged bottom‘ and inlet maker-anti 20 l6,’ respectively, all in‘co'mmunication with the
water andsteam space ll' of the boiler. The back
said elements disposed in parallel relation ir'i’the
same inclinedplan'e.
ployed
in such a ?rebox,When’
certaina'?re'hreh'
sets of theisbricks
and side water legs and the front throat are bot
tomed by a mud ring it and portions of the inner
and the outer back sheets are 'fo'rmed'to" coact
in providing a fuel door opening l9‘ that appears
thereof
syphons
and‘ other
areand
sets
supported
lean
thereof
against
inare
partsupplorted
theall three
adjacent
bythe
sy" side
“'
in dotted lines in Fig. 1. The structure described
which is typical of a conventional locomotive
sheets. With such an arrangement of parts the
boiler ?rebox, is suitably staybolted andcertain
arm is relatively flat andshallowjhroughout
ones of such bolts ‘are indicated by dotted lines
itswidth and the e?ective cross sectionalarea of
a
the' combustion chamber is somewhat restricted
in the ?rebox are located three laterally spaced,
and effects the combustion ei‘?gciency oflthe ?re
longitudinally extending water steaming andcir
2El—20inFigs.1'and2.
box.
'
'
"
v
'
'
’
'
‘L
“
culating elementsQeach of which is preferably'in
the form of a "conventional Nicholson thermic
to’ provide a locomotive boiler “?rebox structure
of this kind wherein better "operational ,e?iciency
is obtained therein Without increasing lthe?c'ost
same
'
‘
One of the objects of the presentfinvention vis
of'the
‘
‘
"
t
syphon. In Figs. '_1 and‘2 the side syphons‘are
" each indicated as a whole by the numeral 21-21
and the intermediate‘ syphon is indicatedmas‘ a
'
whole by the numeral 22. The intermediate
A further object of theinvention is to (so arrange
syphon is disposed in the longitudinal'medi'al
the water steaming and circulating '_ elements ‘in
plane of the ?rebox and the side syphons 2l—"-2l
4-0
the ?rebox‘ as to increase the effective height and
are spaced equal distances from the intermediate
cross sectional area of the central longitudinal
syphon. All of the syphons are structurally ‘simi'
part of thecombustion space‘ of the ?rebox and
lar, the only differences being a‘ different dispo
sition of certain of the parts of'the ‘intermediate
thereby v'obtain'_ more bene?ts from-‘the ‘burning
fuel in the ?rebox than heretofore possible.
syphon relative to like parts in the side syphons
Another object or" the invention isnto provide a
‘ and a body portion of less‘depth.
'
' ‘ "
?rebox structure that includes an “arch requiring
Each syphon as herein shown ‘comprises a flat
but two patterns for the bricksused therein, thus
hollow upright body which includes laterally
simplifying the yard storage of said bricks as
spaced staybolted side walls 23—23 and‘ti'ans
wellas’the initial building up ‘and the servicing of 50 versely rounded front and rear end walls ?fand
thearch'
.
.
.
.,
,.
4,7
25 respectively which at their top ends are
formed'to provide a laterally extending ?ange
t.
The above mentioned objects of the invention,
2E. ri‘his flange of the intermediate syphon en
gages parts of the like ?anges of the side sy
as'well as others together with the ‘advantages
thereof 'will' more fully appear as the 'speoi?'ca—
tion proceeds.
"
Mi‘
"
..
55
phons and all of said ?anges collectively are
2,410,513
4
suitably welded together and ?t and are welded
cept as may be speci?cally set forth in the ap
into an opening provided therefor in the crown
pended claims.
sheet 5. Thus the top end of each of said syphons
I claim as my invention:
discharges into the boiler water and steam space
1. In combination with the ?rebox of a loco
11 of the boiler above the crown sheet.
motive boiler, laterally spaced water steaming and
The bottom end of the body of each syphon
circulating elements extending longitudinally of
is closed by a bulged portion 21 which forms a
the ?rebox, the top of each element opening
continuation of one end of a tubular inlet neck
through the crown sheet thereof, each element
28, the other end of which communicates with
being bottomed by a downwardly and forwardly
a lower part of the water space of the boiler. 10 inclined bulging portion forming a continuation
Generally said other end of said neck is ?xed in
of a tubular inlet neck that communicates with
a suitable ?exible diaphragm 29 in the upper
r a lower part of the boiler, a water steaming and
portion of the inner throat sheet as best appears
circulating member between said elements and
in Fig. 1. The bulged portion and associated
including a downwardly and forwardly inclined
inlet neck of each of the syphons is disposed in 15 portion arranged in a plane above. and substan
a forwardly and downwardly inclined plane as
tially parallel with said bulging portions and said
best appears in Fig. 1. However, in this instance
necks of said elements and which member opens
the longitudinal axis of the bulged portion and
at its ends into upper and lower portions respec
associated inlet neck of the intermediate syphon,
tively of the boiler, and bricks supported in part
while parallel with the like axis; of the like parts 20 by said bulged portions and said necks respec
of the side syphons is disposed in a higher plane.
tively of said elements and in par-t by said por
Thus the body of the intermediate syphon is
tion of said member and forming therewith a part
shorter in height, when considered vertically,
of an arch that increases the e?ective height and
than are the bodies of the side syphons.
cross sectional area of the central longitudinal
In connection with the arrangement of the 25 part of the combustion space in the ?rebox, be
syphons described, I provide two sets of bricks
low the arch.
to form a novel type of arch, later to be men
2. In combination with the ?rebox of a locomo
tioned, the bricks in'one set being of one pattern
tive boiler, laterally spaced water steaming and
or form and the bricks in the other set being of
circulating elements extending longitudinally of
another pattern or form. As best shown in Fig. 30 the ?rebox, the top of each element opening
2, the bricks of one set are designated by the
through the crown sheet thereof, each element
numeral 30 and the bricks of the other set are
being bottomed by a downwardly and forwardly
designated by the numeral 3i.
inclined bulging portion forming a continuation
The bricks of the set 30 are preferably of a
of a tubular inlet neck that communicates with
concave-convex shape from end to end and these 35 a lower part of the boiler, a water steaming and
ends are so formed that they will engage in sup—
circulating member between said elements and
porting relation at their outer ends upon the
including a downwardly and forwardly inclined
bulge portion on the inner face of the side sy
portion arranged in a plane above and substan
phons and will engage in supporting relation upon
tially parallel with said bulging portions and said
both sides of the bulge portion of the intermedi
necks of said elements and which member opens
ate syphon. These bricks in combination with
at its ends into upper and lower portions respec
the bulge portions of the syphons provide a chan
tively of the boiler, sets of bricks supported in
nel-like combustion space addition between the
.part by said bulged portions and said necks re
side syphons which increases the cross sectional
spectively of said elements and in part by said
area of the main combustion space of the ?re 45 portion of said member and forming therewith
box.
‘
a part of an arch that increases the effective
The bricks in the set 3! rest at one end upon
height and cross sectional area of the central
an outer part of the bulged portion of each side
longitudinal‘ part of the combustion space of the
syphon and extend upwardly and outwardly
?rebox below the arch, and other sets of bricks,
therefrom to have a leaning supporting engage 60 each supported in part by said bulged portion and
ment against the associated side sheet of the
neck respectively of an associated element and
?rebox as best appears in Fig. 2.
in part by a side sheet of the ?rebox adjacent an
With the arrangement described, a Dutch
associated element and forming side portions
oven-like structure is provided. 7 This results in
that complete the arch in the ?rebox.
better combustion and radiating effects for the
3. In combination with the ?rebox of a loco
longitudinal central part of ?rebox under the
motive boiler, a plurality of laterally spaced, side
arch, with the rear end portion thereof more
and intermediate water steaming and circulating
closely approaching the crown sheet on its lon
elements extending longitudinally of the ?rebox,
gitudinal median line. Thus the products of
the top of each element opening through the
combustion, as they swirl forwardly under the
crown sheet thereof, each element being bot
central portion of the arch, impinge against that
part of the crown sheet between the side syphons
for a better heating action thereof.
Again, with the bricks in the two sets men
tioned arranged as described, more space is pro
vided between the side syphons for the workmen
tomed by a downwardly and forwardly inclined
bulging portion forming a continuation of a
tubular inlet neck that communicates with the
lower part of the boiler, the downwardly and
forwardly inclined bulging portion and neck re
spectively of the intermediate element being ar
in setting the bricks in place to form the arch.
ranged above but substantially parallel with the
. Also with they parts arranged ‘as described, a
like portion and neck respectively of the side ele
more e?icient ?rebox is provided without increas
ments, and bricks supported in part by the bulged
ing the cost thereof.
70 portions and necks respectively of said side and
While in describing the invention I have re- '
said intermediate elements and forming there
ferred in detail to the form, construction and ar
with a part of an arch that increases the effective
rangement of the parts involved, the same is to
height and cross sectional area of the central lon
be considered only in the illustrative sense and
gitudinal portion of the combustion space of the
therefore I do not wish to be limited thereto ex 75 ?rebox, below the arch.
2,410,513
5
4. In combination with the ?rebox of a loco
motive boiler, a plurality of laterally spaced, side
and intermediate water steaming and circulating
elements extending longitudinally of the ?rebox,
the top of each element opening through the
crown sheet thereof, each element being bottomed
by a downwardly and forwardly inclined bulging
portion forming a continuation of a tubular inlet
neck that communicates with a lower part of the
6
portion and necks respectively of said side and
intermediate elements respectively and forming
therewith a part of an arch that increases the ef
fective height and cross sectional area of the
central longitudinal portion of the combustion
space of the ?rebox below the arch, and other
sets of bricks, each supported at one end upon
the bulged portion and neck respectively of an
associated side element and extending upwardly
boiler, the downwardly and forwardly inclined 10 and outwardly therefrom and engaging at their
other ends against the side sheet of the ?rebox
bulging portion and neck respectively of the in
adjacent the associated side element and forming
termediate element being arranged above but sub
the side portions that complete the arch in the
stantially parallel with the like portion and neck
?rebox.
I
respectively of the side elements, sets of bricks
6. In combination with the ?rebox of a loco
supported by said bulged portion and necks re 15
motive boiler, a plurality of longitudinally ex
spectively of said side and said intermediate ele
tending inclined water circulating elements
ments and forming therewith a part of an arch
spaced laterally in the ?rebox, both ends of said
that increases the e?ective height and cross sec
elements opening through the ?rebox sheets into
tional area of the central longitudinal portion
of the combustion space of the ?rebox below the 20 the water space of the boiler, the lower ends of
said elements opening into the boiler at a point
arch, and other sets of bricks, each supported in
forwardly of the rear ends, a longitudinally ex
part by the bulged portion and neck respectively
tending inclined water circulating element posi
of a side element and in part by a side sheet of
tioned intermediate said ?rst mentioned elements
the ?rebox adjacent said element and forming
the side portions that complete the arch in the 25 in a plane above the same, said last mentioned element also being inclined and having its ends
?rebox.
5. In combination with the ?rebox of a loco
motive boiler, a plurality of laterally spaced side
and intermediate water steaming and circulating
elements extending longitudinally of the ?rebox,
the top of each element opening through the
crown sheet thereof, each element being bot
tomed by a downwardly and forwardly inclined
bulging portion forming a continuation of a
tubular inlet neck that communicates with a 35
lower part of the boiler, the downwardly and for
wardly inclined bulging portion and neck re
spectively of the intermediate element beingar
ranged above but substantially parallel with the
like portion and neck respectively of the side ele
ments, sets of bricks supported by said bulged
opening into the water space of the boiler with
the lower end at a point forwardly of the rear
end, and a ?rebrick arch comprising bricks ex
tending between said ?rst mentioned elements
and the adjacent side sheets of the ?rebox and
being supported by said parts, and other bricks
extending between and supported upon said in
termediate element and said ?rst mentioned ele
ments and forming therewith an elongated Dutch
oven-like channel which increases the effective
height and cross sectional area of the central
longitudinal part of the combustion space below
the arch.
HENRY E. MAY.
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