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Sept- 24, 1946.
F. w. GEORGE,‘ R
2,407,980
MULTIPLE-CYLINDER STEAM LOCOMOTIVE
Filed Dec. 8, 194.2 7
3 Sheets-Sheet l
INVENTO'R
_ ATTORNEYS
Sept 249 1945-
‘
F. w. GEORGE, JR >
I
2,407,980
_ MULTIPLE-CYLINDER STEAM LQCOMOTIVE
Filed Dec. ‘8, 1942
'3 Sheets-Sheet 2-‘
TTQRNEYS
Sept. 24, 1946.
>
F. w. GEORGE, JR
MULTIPLE CYLINDER STEAM LOCOMOTIVE
Filed Dec. 8, 1942
2,407,980
3 Sheets-Sheet 5
Patented Sept. 24, 1946
2,407,980
UNITED STATES PATENT OFFICE
2,407,980
MULTIPLE- CYLINDER STEAM
LOCOMOTIVE
Fred W. George, Jr., Lima, Ohio
Application December 8, 1942, Serial No. 468,272
32 Claims.
1
This invention relates to multiple-cylinder
(01. 105-47)
2
time securing certain novel and advantageous re
steam locomotives, and particularly to the steam
piping system thereof; the invention being well
sults, with an economy of means.
sure steam to each cylinder, and as exhaust steam
arrangement also has the advantage of tending
More particularly, the invention contemplates
adapted to Mallet locomotives or the like, and
a system of steam piping, for Mallet locomotives
especially useful in the simple Mallet type, an 5 or the like, wherein the length of piping and the
example of which has, been chosen for purposes
number of pipes, the number of bends, and the
of illustration in this case.
number of ball and expansion joints, are kept at
In steam locomotives having cylinders located
a minimum, consistent with the functions to be
at spaced-apart zones, longitudinally of the boil
served; while at the same time the pipes are
er, the conducting of the steam from the dry 10 so disposed, and the bends, turns and joints are
pipe or from the superheater header to the cylin
so employed as to ?t the piping ‘into the smallest
ders, the conveying of exhaust steam from the
practicable space, and derive from the curves and
cylinders to the discharge zone, and the handling
joints the greatest measure of accommodation
of the steam supply for auxiliaries, such as the
of the system to thermal expansion and contrac
feed water heater, usually present problems of 15 tion, and the fullest measure of ?exibility for ac
some complexity.
commodating the relative motions of parts due
These problems are of several kinds: ?rst, those
to articulation of the locomotive.
‘
which arise from the necessity of accommodating
Still further, the invention contemplates the
thermal expansion and contraction in steam pipes
facilitation of the mounting, application and re
of the length required in such locomotives; sec 20 moval of the various elements of the piping sys
ond, those originating in the requirements of e?i
tem with relation to the boiler and also with
ciency, such as the necessity of minimizing ra
relation to the cylinders and frame, particularly
diation losses and of avoiding restrictions and ex
when the cylinders are cast in integral pairs with
cessive twists and turns in the pipes; third, those
the two bed frames of an articulated locomotive.
due to severe space and clearance limitations; and 25
Additionally, the invention involves the provi
fourth (especially in the case of Mallet or other
sion, in a locomotive having more than two cyl
articulated types of locomotives), those which
inders (and especially in a locomotive having cyl
flow from the necessity of accommodating rela
inders located at regions spaced apart lengthwise
tive motions between certain parts, for instance
of the boiler), of means for taking steam from
between steam pipes and other parts mounted 30 cylinders in a plurality of such regions and de
on one frame structure and related parts mounted
livering same ‘to auxiliaries on the locomotive,
on another frame structure and/or upon the boil
such as the feed water heater; and in this regard,
er of the locomotive in cases where one frame is
the preferred embodiment of the invention com
pivoted to the other and swings laterally beneath
prises a relatively simple piping system, which,
one end of the boiler.
35 while free from interference with the main steam
These problems have been aggravated by the
and exhaust lines to and frornthe cylinders, is
progressive increase in size of modern multi-cyl
so connected to the exhaust lines as to take
exhaust steam individually from each cylinder of
inder locomotives which need increased steam
two spaced-apart pairs of cylinders, and to com
flow but have less space available for pipes; and
they are especially troublesome in engines of the 40 bine these four sources of supply for uni?ed deliv
single-expansion or simple type, as contrasted
cry to the auxiliary device In this way, the
eight exhaust impulses of one complete cycle of
with the multiple-expansion or compound type,
four cylinders of a Mallet locomotive can be em
since the steam, instead of being conducted se
ployed in a way to minimize the discontinuity of
rially from one cylinder to another (as in the
compound type), must be conducted as high pres 45 the exhaust steam supply to such auxiliary. This
from each cylinder, which necessarily involves
more piping on a locomotive of given size (assum
ing the same number of cylinders in each case).
In general, the primary object of the present
invention is to take care of the above and related
problems encountered in this art; and the in
vention further contemplates the accomplish
to avoid differences in exhaust back pressure upon
the different cylinders.
‘
How the foregoing and other objects and ad
vantages of the invention are secured, will appear ,
from the following‘description, taken together
withthe accompanying drawings, wherein~
Figure 1 is a side view of the forward portion
of a simple Mallet locomotive embodying the pres
' ment of this general purpose while at the same 55 ent invention, the piping system of the invention
, ,7
71
l
2,407,980
f.
(together with the associated cylinders and steam
chests) being illustrated in full lines, while the
locomotive, boiler, framing and wheels are shown
only in dot-and-dash outlines;
Figure 2 is an enlarged view taken from the
front of the locomotive of Figure l, but addi
tionally showing in full lines the cylinder saddle
structure of the forward bed frame, part of the
4
by means of a rocker-mounted bolster on which
the truck center pin 22B is carried.
A general understanding of the steam piping,
' system may be had by tracing the path of the
steam from the dome 8. Dry pipe 23 conducts the _
steam from the steam dome to the inlet header
24 of the superheater, and' after passing through
the usual superheater elements (not shown) the
steamleaves the superheater by way of the outlet
forward frame extension being shown in section
10 header ‘251 which may contain a throttle at 26.
and part in elevation;
1' ' ''
By reference torFigure 2, along with Figure 1,
Figure 2A is a sectional view, to the same scale,
it will be observed that the steam is taken from
through the forward extension of the bed frame,
immediately ahead of the cylinder saddle struc} ' the superheater header, downwardly at each side,
ture, illustrating a part of the main steam; pipe ~ _Tb_yi--curve'd pipes 21 within the smokebox. Ex
terior elbows 28 connect these pipes to the rear
expansion joint and a sliding support therefor;
Figure 3 is a detail view taken on ‘the line 35-3 , - wardly extending pipes 29, ‘one at each side of
the boiler, below the center line thereof.
of Figure l, but to the scale of Figure 2, showing
the exhaust steam pipe junction member for-the ' I > Each pipe '29, toward its rear end, is bent down
wardly for connection, through an expansion
front cylinders, formed also as the socket of- av
joint 3|, ‘to the cylinder neck 32 which at the
ball joint, and as a steam take-off for the feed
bottom is integrally connected to the steam chest
water heater;
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,7
of 'the unit |'|. Before tracing-the exhaust from
Figure 4 is‘a planvview, to the'same scale as
the rear cylinders, the steam flow will be fol
Figures 2 and 3, of the cross-conduit lying below
the rear exhaust nozzle which‘ forms a junction
lowed out with reference to the front cylinders'
for the twolongitudinally extending exhaust pipes "_‘
At the back of the cylinder necks'32, a pair of
from therear cylinders, and illustrating the con- r‘
nection for taking oif exhaust steam from both
bent pipes 33'extend- downwardly and toward the
sides, for ultimate delivery to the feed water
heater;
_
‘
center line of the‘ locomotive, ‘where they are
coupled at opposite sides’ to a central ?tting 34,
connected to the rear end of a short pipe 35 which
“
Figure 5 is a detail‘ in'ew taken on the line 5—5
extends forwardly within a‘ the cylinder saddle.
of Figure 2, ‘but to a larger scale, illustrating a ~“I ' Pipe 35 has a ball joint at 35'with a pipeisection
pipe junction casting, in the line of j connections
to the feed water heater, said casting also form
35A (said ball joint being located substantially
directly above the pivot l5), and the section 35A
ing the socket of a ball joint; and
is- inturn connected at 3513 .tothe main section
v
'
>
Figure 6 is'a longitudinalverticalsection, to
35C‘extendin'g longitudinally within, and along
the same scale as Figure 5, showing the ?exible '
the central vertical plane of, the engine bed It.
pipe connection from the joint member of Figure
5 to ‘a correspondingv member coupled up to the
vfeed'water heater, this ?exible connection com
The box-like structure of the bed casting has a
have illustrated a locomotive boiler shell ‘I, hav
cross-walls 31A and 31B (Fig. 2A) . '
ing steam dome 8,.double smokestack 9 with sub
jacent‘ nozzles lihfeed water heater H and feed
pump l2, the heater being mounted‘in a recess
‘formed in the shell adjacent the front of the
smokebox H. The boiler'and other parts just
referred to-are mounted ?xedly upon the rear bed
At its forward end,,the pipe member 350 has
an expansion joint 38, which latter in turn is
longitudinal'channel for reception and removal of
thecentral steam 'pipe', such channel being de
fined in part by the upright inner walls 31 (Figs.
prising .two ball joints and a slip joint;
By reference to Figure 1', it will be seen that I " ~ 2 and-32A) and by the upper and intermediate 7'
frame, a small portion of which is shown at M;
Inter?tted with and pivoted to said rear frame
at I5 is the tail portion |6A of the frontbed‘
frame‘l?, which'may have a forward extension
16B, the extreme front end of which carries th
bumper’ and. coupler (not shown).
_
~
Fixed to, and preferably integral with, the rear
frame structure I4 is a pair of cylinder and chest * '
units ll, serving to actuate the driving wheels
in the rear frame, one such‘ wheel being frag
mentarily shown at [8.
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"
I
The boiler l, the rear fr-amelli and driving‘ *
slidably supported on a seat 39 in the forward
part‘ of the front cylinder saddle structure 40. 7
At this point, a forked ?tting 4| is coupled onto
the front ?ange I of theexpansion joint, the '
branches 42 of said fork34| diverging laterally
and upwardly, ina forward'direction. These, in
turn,'are coupled by laterally and rearwardly bent‘
pipes ‘43'to1the elbowsl‘M .- integral with ‘steam
chestsZl;
_
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-
T
7
Referring again to the expansion joint38: the
.details of its structureneed not be shown, since
any suitable type may be used (one example of
which is disclosed'in Patent No. 2,127,073). Suf
?ce it to say that'the joint itself may be used to
accommodate the expansion of pipe elements
35A and 350 ‘with reference to the forked'piping
4|, 42; .but'theexpans'ion of the pipe-35C ‘with
reference
to the bed casting I6 is accommodated
I1, and the intervening saddle structure, includ
by thesliding support in the saddle structure 4M
ing the boiler saddle member'fragmentarily shown
As seen in Figure 2A, the outer shell of the joint
at 1A, all move as a unit, in the traversing of
38ha's a semi-circular peripheral wear plate 33A
curves. The front frame l6 has a sliding support T '
3 which rides on the arcuate seat 39 which is
for the boiler at ‘B, so that this frame with its
mounted in the saddle structure. Undesired ro
. wheels I8 journ'alled therein, the cylinder units '
driving wheels l9 and its pair of cylinders 2E3
and chests 2|, can swing laterally asvav unit about
the axis of pivot l5, as when taking curves. The
_ usualrspring-type centering device is indicatedat
1C. The truck wheels 22 may have the usual mo
tions relative to the’frame IE, it being customary
_ tation of the pipe joint 38 is prevented by ex
ternal lugs 3813, which engage the subjacent
shoulders, formed (as shown)v by a reduction in
' the diameter of the 'lower'half of the aperture
40A in the structural flange 40B.‘ ' '
- V
,In summary, it will now’ be seen that the live
to provide pivotal motion of _ the truck frame
steam, taken from the boiler at the .smokcbox
about an ‘axis 22A, andto provide lateral motion
‘region, is ?rst carried bacl; to the rear cylinders, ’
5
2,407,986
and half of it is further carried back behind the
rear cylinders and there to a central point, from
whence it passes forwardly from the rear cylin
6
adapted toitake advantage of the available space,
by having the steam pipes diverge upwardly from
the central pipe 35C, and the exhaust pipes con
verge upwardly to the superimposed central pipe
5!. At the same time, the curvatures employed
in these pipes for making connections are also
taken advantage of to accommodate expansion
and contraction.
The described arrangement of superimposed
central main steam and exhaust pipes, with their
the rear of the rear cylinders and forwardly of
branches, is also of especial advantage in pro
the front cylinders, takes care of the necessary
viding clearance for the truck center pin 22B and
expansion and contraction in those regions, and
its surrounding guide structure 22C, 22D (Fig. 2) ;
the single expansion joint 33 takes care of the
since this assembly is positioned forwardly of the
expansion and contraction in the long central 15 forked pipe 4!, and below the central exhaust
pipe. The ball joint 35 is the only angling joint
pipe, the branches 4'! of which lie on either side.
necessary in the entire live steam system. The
For clearance of the live steam branch pipes 42
joint 35B is only required for mechanical pur~
with relation to the framing, the latter is pro
poses, e. g. for assembly and disassembly. Ex
vided with depressions orgrooves 42A, just back
pansion and contraction of the pipe assembly
of the truck center pin assembly (as seen in
with relation to the framing is accommodated by
Fig. 2).
a sliding mounting for one or more of the pipe
For removal of the main central steam pipe 35C,
joints, preferably a sliding mounting for the
the truck, with its center pin 22B, is dropped, the
expansion joint 33, ‘within the front saddle (as
removable part 22D of the center pin guide is
illustrated in Fig. 2A).
25 lifted out, the pipe junction members 4| and 49
At the front valve chests 2i, the exhaust at
are removed, the main steam pipe joint 35B is
each end is carried laterally inwardly through
disconnected, the front end of the main steam
connections 45 to a longitudinal passage as in
pipe 350 (with its expansion joint 33) is lifted»
the chest structure and at the front ends of said
slightly, and slid out forwardly.
passages there are coupled two pipes All and WA, 30
In addition to the support of the various pipes
respectively, extending forwardly enough to clear
by virtue of their connections to cylinder and
the live steam piping 42, 53. At their front ends,
saddle structures, smokebox shell, etc., various
the pipes a? and 47A extend upwardly and lat
hangers, brackets and pads may be employed.
erally inwardly, where they are joined to the
Examples of these are the mounting devices for
-.two branches 48A and d3 of the central joint
the two large exhaust pipe junction castings
casting (shown in detail in Figure 3).
shown in Figures 3 and 4. Thus the junction
The main body 49 of this casting forms a jun~~
member 49 for the exhaust pipes from ‘the two
ture for the two branches, and a socket for the
front cylinders is provided with mounting pads or
der saddle to the front cylinder saddle (passing
through both saddles), and from a point for
wardly of the front cylinders it is carried back
over each cylinder into the respective chests.
This arrangement causes the least interference
with the running gear and other parts in the
region thereof. The curvature in the pipes, to
ball joint 56 (Fig. l) at the‘ front end of a cen~
feet 5!, having lateral positioning ?anges 62,
tral exhaust pipe 5!, which also has a slip joint 40 adapted
to be ?rmly seated upon and bolted to
at 52, and a second ball joint 53, the latter being
the
top
of
the forwardly extending frame struc
at the base of the front exhaust nozzle it.
ture 16B. Likewise, the junction member 59 for
The exhaust passages in the rear cylinder units
the exhaust pipes from the rear cylinders has
I‘! may be similar to passages 155 and 43 already
mounting
pads or brackets 63 adapted to be
described with reference to the front cylinders. 45
bolted or otherwise secured to the bottom of the
At the rear cylinders, however, these have up
smokebox shell.
,
a
.
wardly turned elbows (shown at as) which are
Turning
now
to
the
arrangement
for
delivering
coupled to the rear ends of pipes 55 which eX~
exhaust steam from all four cylinders to the feed
tend forwardly at the sides of the boiler shell,
below the steam pipes 29. Each pipe 55 has a 50 water heater, it will be observed from Figures 1.
and 5 that a junction member 64, located ad~
suitable disconnection joint 55 and expansion
jacent
the front of the piping system (at the
joint 5?, which in turn is coupled to one end e1~
left side of the locomotive) has two downwardly
bow 53 of the cross-conduit 59, as seen in Fig
diverging branches B5 and 6-3. Branch 65 is cou
ure 4. This conduit is flattened (as seen in Fig.
pled directly tothe exhaust take-off pipe 41A
1) to ?t with adequate clearance between the top
for the left front cylinder (see Fig, 2). Branch
of the bed frame It and the bottom of the smoke»
66 is coupled to receive exhaust steam from the
box l3, which it will be noted is raised somewhat
pipe member 48A (on the right-hand side)
above the bottom of the main part of the boiler
through'the medium of an integral passage 61
barrel. The apertures (ill at the center of the
upper face of the cross-connection 59 discharge 60 formed in the casting 49 and taking steam di
rectly from the pipe element 48A thereof (see
into the rear exhaust nozzle IE).
Figures 2 and 3) and a short length of connect
Although, for clarity, the pipes alone are
ing pipe 68 (see Figure 2) .
shown, it will be understood that in practice all
The junction member 64 in turn forms the
of the pipes so far described are customarily cov
ered with a substantial lagging. This further in 65 socket of a ball joint 69 (Figure 6) at the front
end of the rearwardly extending pipe ‘H which
creases their outside dimensions, but it will be
seen that the disposition of the pipes is such as
to accommodate the lagging, even though it be
built up to an outside diameter approximating
the diameter of the various joint ?anges.
It should be observed that in addition to the
superimposed location of the various longitudinal
pipes at each side of the locomotive (as best
seen in the front end View of Fig. 2), the piping
at the region of the front cylinders is especially
includes a slip joint 12 and has a second. ball
joint 73 in the socket 14 which is on the front
branch of a pipe coupling 75.
The rear branch 16 of said coupling (Figure 1)
receives exhaust steam from the rear cylinders,
through a downwardly and laterally curved pipe
Tl which is coupled to off-take 18 formed on the
junction casting 59 (Figure 4). It will be ob
served that the take-off 18 has two branches
TBA and 18B, taking steam from either side of
£2,407,980
the central exhaust outlet 60, 66, so that an un-,
.
1. In a steam locomotive having a boiler and
impeded now of exhaust steam is taken from each ,
end 58, 58, of the cross-pipe 59.
8
I claim:
pairs of cylinders at longitudinally spaced-apart
.
zones, each pair having intervening saddle struc
ture, a steam piping system including means
conducting the steam supply for two pairs of cyl
Having joined the exhaust steam taken oil from
all four cylinders, at the coupling 15, this is in
turn connected to the feed water heater H by
means of an upwardly extending curved pipe 19,
inders from the boiler to the zone of one of said
pairs of cylinders, conduit means connected to
which is connected to the feed water heater at
the left side of the locomotive. The heated water
receive part of said supply and extending from
the saddle structure of said one‘ pair to and
through the saddle structure of the other of said
pairs, and pipe means connected to said conduit
is taken from the right side of the heater by a
downwardly extending curved pipe 8i, which ex
tends forwardly through the front smokebox wall
means beyond said latter pair and doubled back
for,connection to an elbow 82 leading into the
for connection thereto.
hot water pump I2. The pipe from the pump
2. A construction according to claim 1, wherein
l2 into the boiler is not shown, nor is the pipe
said conduit means extends through both of said
leading from the tender to the feed water heater,
saddle structures, and the connections thereto
since these may be of the usual character, dis
at each end thereof extend beyond the remote
posed'in the usual or any other desired way. It
faces of the said saddle structures.
‘
will be observed from Figures 1 and 2 that the
3. A construction according to claim 1, where
pipes 19 and 81 are substantially symmetrically 20
in said conduit means comprises a centrally dis
disposed at the two sides of the smokebox, well
posed pipe extending longitudinally through both
toward the front thereof, out of the Way of the
of said saddle structures, said conducting means
nozzles and stacks, and in longitudinal align
comprise a pair of pipes converging from the
ment with the‘steam pipes 21, 21 (as seen in Fig
ure 2), so as to leave a clear central space with 25 sides to a point of connection to said centrally
disposed pipe, and said pipe means at the oppo
in the smokebox, which is desirable for purposes
site end comprise a pair of pipes diverging from
of access to the fines,‘ etc.
said centrally disposed pipe, the two pairsof pipes
, From the foregoing detailed description of the
structure, it will be clear how'I secure the various
being respectively disposed beyond the remote
faces of the saddle structures.
advantages set forth at the beginning of this
speci?cation. A few points might here be em
pairs of cylinders atlongitudlnally spaced-apart
phasized: for ‘example, by carrying the steam
zones, each pair having intervening saddle struc
ture, and said pairs of cylinders being mounted
pipes to the rear of the rear cylinders and thence
forwardly along the center, by taking off the ex
“ upon separate frames articulated together’ ad
haust from the front of the rear cylinders, at
each side, and by carrying both the live steam and
the exhaust connections of the front cylinders
forwardly thereof, I make the best use of the
available space.
jacent one of said pairs, a steam piping system
including steam conduit means for‘ conducting
steam from the saddle structure of one pair to
the saddle structure of the other pair of cylin
There is a limited space avail
ders, said conduit means comprising a centrally
able both fore and aft of the rear cylinders, and
each of these spaces is' utilized; while adjacent
the front cylinders there is ample’ space for
disposed steam pipe having only one ball‘joint,
said ball joint being mounted on one saddle struc
ture and centered adjacent the axis of frame ar
wardly thereof, and I therefore place the major
part of both the admission and the exhaust pip
ing in that location, superimposing the main cen
tral exhaust pipe (with its slip joint) over the
main central live steam pipe; overlapping the
pairsof admission and exhaust branch pipes; and
locating two ‘ball joints of the main exhaust pipe
forwardly and rearwardly, respectively, of the 50
front cylinder-and-saddle location.
The ar
rangement also has the advantage of providing
ample distance between the ball joints of the ex
haust steam piping, which minimizes the degree
of angular movement (and thus the wear) at the
ball joints, for a given angular lateral swing of‘
the front frame, and likewise minimizes (though
to a lesser degree) the required amount of slip
joint movement in said piping.
a
4. In a steam locomotive having a boiler and
ticulation, and said pipe further having expan
sion joint means mounted on the other of said
saddle structures.
5. In a steam locomotive having a boiler and
pairs of cylinders at longitudinally spaced-apart
zones, each pair having intervening saddle struc
ture, va steam piping system including steam con
duit means for conducting steam from the saddle
structure, of one pair to the saddle structure of
another pair of cylinders,vand ball and expan
sion. joints for said conduit means supported
upon said saddle structures, in which construc
tion said pairs of cylinders are mounted upon
separate frames articulated together adjacent
one of said pairs, and wherein said steam con
duit means comprises a single centrally disposed
'
rAlthough individual take-offs of exhaust ‘steam 60 pipe having a ball joint adjacent the axis of ar
ticulation, and having an expansion joint adja- .
from. the four cylinders‘ are provided, in order to
cent the remote face of the saddle structure of
secure a relatively smooth flow of steam ‘to-the
the other of said two pairs of cylinders.
I
feed water heater, yet the branches of each pair
6. Ina Mallet locomotive having-a boiler, and
are taken off very close to the junction points of
the respective pairs of cylinder exhaust pipes, 65 a frame an end portion of which is pivoted for
transverse movement with relation to said boiler,
and the resulting take-offs are combined at an
said pivoted frame portion having adjacent its
free end a pair of cylinders and intervening
saddle structure, a steam piping system comprise
a minimum of piping is used for this system.
. Other advantages will occur to those skilled in 70 ing centrally-disposed superimposed longitudi
nally-extending steam and exhaust pipes, one
the art, and various modi?cations may be made
passing longitudinally through the saddle and the .
While still securing to a greater or lesser extent
intermediate position, which is substantially di
rectly beneath the feed water heater, so that
other passing longitudinally across'the top of the
the advantages of the invention within the
broadest‘ scope of the appended claims permis
‘sible in view of the prior art.‘
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saddle.
75
‘
»
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‘
"
'
'1. A construction according to‘ 01am 6, where!
2,407,980 '
9 ..
10“
in one of said pipes has angling joints forwardly
13. A construction ‘ according to claim 12,
and rearwardly of the saddle to accommodate the
wherein said means accommodating expansion
motion thereof relative to the boiler.
and contraction comprises a slip joint between
3. A construction according to claim 6, where~
said longitudinal delivery pipe and said fork, and
in one of said pipes ‘has angling joints forwardly
a sliding mounting in said saddle for said joint.
and rearwardly of the saddle to accommodate the
14. A construction according to claim 12,
motion thereof relative to the boiler, and the
wherein said exhaust pipe expansion joint is ac—'
other has angling joint means adjacent the pivot
commodated between the‘ upwardly divergent
axis for said portion of the frame.
branches of said fork.
10
9. A construction according to claim 6, where
15. In a locomotive having a boiler, cylinders
in each of said central pipes has branches‘con
spaced apart longitudinally thereof, an auxiliary
nected to both cylinders of the pair, one set of
device, an exhaust discharge zone betweena for
branches being connecetd to its pipe beyond an
wardly spaced cylinder and a rearwardly spaced
end of the saddle structure and being connected
cylinder, and main exhaust steam conducting
to the cylinders through an‘end of said structure, 15 means coupled to both said cylinders and ex
and the other set of branches being connected to
tending to said intermediate zone, ‘a steam sup
its pipe beyond an end of said saddle structure
ply system for said auxiliary device, comprising
and extending over the cylinders for connection
an exhaust steam take-cit from the main con
thereto.
ducting means from one of said cylinders includ
10. In a Mallet locomotive having a boiler, and
a frame an end portion of which is pivoted for
transverse movement with relation to said boiler,
ing a pipe, an exhaust steam take-off from the
main conducting means from the other of said
cylinders including a pipe coupled thereto adjae‘
cent said zone‘ of discharge and extending toward
free end a pair of cylinders and intervening
the ?rst mentioned cylinder, andjunction means
saddle structure, a steam piping system compris 25 for said two take-off pipes and extending from
ing centrally-disposed superimposed longitudi
thence to the auxiliary device, whereby the dis
nally-extending steam and exhaust pipes, one
continuity of the exhaust steam supply to said
auxiliary is minimized.
the
passing
otherlongitudinally
passing longitudinally
through across
the saddle
the top of
16. A construction according to claim 15,
the saddle, in which construction each of said 30 wherein there are‘ pairs of cylinders at each of
central pipes has branches connected to both cyl
said forward and rearward locations, and said
said pivoted frame portion having adjacent its
inders of the pair, one set of branches being con
nected to its pipe beyond an end of the saddle
exhaust steam take-offs are coupled to receive
exhaust steam from both cylinders of each pair.
structure and being connected to the cylinders
17. A construction according to claim 15,
through an end of said structure, and the other 35 ‘wherein there are pairs of cylinders at each of
set of branches being connected to its pipe be
said forward and rearward locations, and where
yond an end of said saddle structure and ex
in said‘ main conducting means comprise sepa
rate exhaust conduits from each cylinder of each
to, said construction further being characterized
pair, and said take-offs include separate connec
in that the ?rst mentioned set of branch pipes 40 tions to each of said conduits.
is coupled to the upper of the two central longi
18. In a multiple-cylinder‘ steam locomotive
tending over the cylinders for connection there
tudinal pipes and extend laterally, downwardly
having two longitudinally spaced-apart pairs‘ of
and thence longitudinally, and the second men~
cylinders, exhaust nozzle means, and an auxiliary
tioned set of branch pipes is coupled to the lower
device utilizing exhaust steam, for the cylinders .
of said central pipes and extends upwardly, lat 45 of each pair‘a pair of separate exhaust conduits
erally and thence longitudinally.
which converge before discharging through the
11. A construction according to claim 10
nozzle means, a pipe taking steam from each con
wherein the upper of said central pipes has an
duit at points before convergence of the respec
expansion joint disposed between two branch
tive conduits of each pair, and means conducting
pipes of the latter pair.
50 steam from all four-pipes to said auxiliary device.
12. In a steam locomotive having articulated
19. In a multiple-cylinder steam locomotive
frame structures each of which has a pair of
having a boiler ?xed upon one frame and a feed
laterally disposed cylinders with their valve
water heater ?xed thereto, another frame piv
chests and intervening saddle, the saddle on one
oted to that ?rst mentioned, a pair of cylinders
frame structure being adjacent the free end 55 on each ‘frame, and exhaust nozzle means lo
thereof which is remote from the point of articu
cated in the boiler shell between the pairs of cyl
lation, a steam conveying system comprising a
inders, exhaust conducting means from the cyl
steam delivery pipe extending longitudinally to
inders of the pair on the ?rst-mentioned frame
ward the free end of said structure and central
extending to said nozzle means, exhaust conduct
ly through said saddle and provided with means 60 ing means from the cylinders of the pair on the
accommodating thermal expansion and contrac
second-mentioned frame including an exhaust
tion longitudinally, forked piping adjacent said
pipe ‘common to the exhaust of both cylinders of
free end having its base connected to the end
said pair, extendingto said nozzle means and in
of said delivery pipe and having its branches ex
corporating ?exible joint means to accommodate
tending upwardly, laterally and thence reversely 65 the pivotal movement of the second~mentioned
to the adjacent chests and connected to the lat
frame, exhaust steam delivery means extending
ter centrally thereof, a central longitudinal ex
from the ?rst-mentioned conducting means to
haust pipe overlying said delivery pipe and pro
the feed water heater, and'exhaust steam delivery
vided with swiveling joints at both ends and an
means extending from the second-mentioned
intermediate expansion joint, separate longitu 70 conducting means to the feed water heater and
dinal discharge pipes extending from said chests
comprising a single ?exible pipe to accommodate
toward said free end, and transverse piping lo
the pivotal movements of the second-mentioned
cated beyond said fork and extending upwardly
frame.
and inwardly and joining said discharge pipes
‘20. A construction according to claim 19,
and said exhaust pipe.
75 wherein each of said steam exhaust delivery
2,407,980‘
11"
means to the feed water heater has a'divided in
take, adapted to receive exhaust steam separate
ly from each cylinder of the respective pair.
12
tially separated longitudinally of said boiler, a
steam conduit centrally disposed in said framing
and extending lengthwise thereofyas a rigid unit
from adjacent one saddle structure to adjacent
the other and having forked pipe means asso
ciated therewith, an expansion joint accommo
dating relative movement between said rigid con
duit and said pipe means and means lying within
toward one side of the boiler shell.
one of said saddles and affording support for the
22. The construction of claim 19, in which the
?rst mentioned single exhaust pipe with its flex 10 conduit, pipe means, and expansion joint, and
constructed to accommodate relative movement
ible joint means is centrally located and the sec
between the same and the saddle structure.
ond mentioned ?exible pipe is located toward one
30. In a steam locomotive having a boiler with
side of the boiler shell, said construction further
21. A
wherein
with its
and the
construction according to claim 19,
the ?rst-mentioned single exhaust pipe
?exible joint means is centrally located,
second-mentioned ?exible pipe is located
being characterized in that the two delivery
longitudinal framing therebeneath, cylinder-sad
means combine into one pipe extending up one
dle structures at locations which are substantial
ly separated longitudinally of said boiler, a steam
side of the boiler shell to the feed water heater,
and a discharge pipe from the feed water heater
is located at the other side of the boiler shell.
23. In a locomotive steam piping system, a pipe
junction member having two exhaust line inlets 20
and one exhaust line outlet, and an auxiliary
steam take-01f formed in said member.
conduit centrally disposed in said framing and
extending lengthwise thereof as a rigid unit from
adjacent one saddle structure to adjacent the
other and having a pair of steam pipes associated
therewith, and means carried by the respective
saddle structures and yieldingly supporting said
rigid conduit adjacent each of said saddle struc
tures, said means at one saddle structure com
24. The junction member of claim 23, wherein
said take-off communicates directly with one of
said inlets at a point prior to its merger with the 25 .prising means accommodating conduit movement
relative to said structure, and said means adja
other.
cent the other saddle structure comprising a joint
25. In a locomotive steam piping system, a pipe
accommodating conduit movement relative to
junction. member having two exhaust line inlets
said steam pipes.
,
'
and one exhaust line outlet, with the latter being
formed as part of a ?exible joint, said junction 30' 31. In a steam locomotive having a boiler with
longitudinal framing therebeneath, cylinder-sad
member having integral mounting means adapted
dle structures at locations which are substantial
to seat upon 'a locomotive frame structure.
ly separated longitudinally of said boiler, a steam
26. In a locomotive steam piping system, a
conduit centrally disposed ‘in said framing and
transverse exhaust pipe member having at each
end means of connection to- a longitudinal pipe, 35 ‘extending lengthwise thereof as a rigid unit from
adjacent one saddle structure to adjacent the
and centrally having means of connection to an
other, and means yieldingly supporting said rigid
exhaust nozzle, and formed with a take~off for
conduit adjacent each of said‘ saddle structures,
an auxiliary, said take-off having one outlet but
said yielding means adjacent one of said saddle
con?gured with two inlets, communicating re
structures comprising a longitudinally sliding
spectively with the transverse pipe at either side
support in the saddle structure, and said yielding
of said exhaust nozzle connection means.
means adjacent the other of said saddle struc
27. In a locomotive having a pair of cylinders
tures comprising a laterally angling pipe joint
with intervening saddle structure, framing ex
tending longitudinally from said structure, and _ ,adapted to accommodate lateral swinging of said
' v‘framing relative to said boiler.
truck structure beneath said framing having cen
ter pin mechanism extending upwardly therein,
a steam piping system comprising superimposed,
centrally-positioned, main longitudinal pipes, and
branch pipes for each cylinder arranged in pairs,
one pair being connected to each of said central 50
32. In a steam locomotive having a boiler with
longitudinal framing therebeneath, cylinder-sad
dle'structures at locations which are substantial
,ly separated longitudinally of said boiler, asteam
‘conduit centrally disposed in said framing and
extending lengthwise thereof as a rigid unit from
adjacent one saddle structure to adjacent the
pipes, the upper central pipe being located above
said center pin mechanism with its branches
passing to the sides thereof, and the lower of
said central pipes having its junction with its
other, and means yieldingly supporting said rigid
conduit adjacent each of said saddle structures,
branches at a region intermediate said mech
‘said means adjacent one of said saddle structures
anism and said saddle structure.
‘
’
28. A construction according to claim 2'7, in '
comprising a pipe expansion joint and a 1011mm
dinally sliding support in the saddle structure,
and said yielding means adjacent the other. of
combination with center pin mechanism mounted
said saddle structures comprising a laterally. an~
for removal, to permit endwise withdrawal of the
60 gling pipe joint adapted to accommodate lateral
lower central pipe.
swinging of said framing relative to said boiler.
29. In a steam locomotive having a boiler with
longitudinal framing therebeneath, cylinder
saddle structures at locations which are substan
FRED W. GEORGE, Jn.
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