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; ' ,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. ' " 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; _ - - 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.‘ ' saddle. 75 ‘ » ' ‘ " ' '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.