US912923A - Articulated locomotive. - Google Patents

Description

S. M. VAUCLAIN.

v ARTIGULATED LOGOMOTIVB.

APPLICATION FILED AUG. 6. 1908. 912,923 Patented Feb. 16, 1909.

'7 EHEETS-SHEET 1 if Jamel/ Va S. M. VAUGLAIN.

ARTIGULATED LOOOMOTIVE.

APPLICATION FILED AUG. 6. 1908.

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ARTIGULATED LOGOMOTIVE.

APPLICATION FILED AUG. 6. 1008.

91 2,923; Patented Feb. 16, 1909.

S. M. VAUGLAIN. ARTICULATED LOGOMOTIVE.

APPLICATION FILED AUG. e, 1908.

Patented Feb. 16, 1909.

? SHEETS-SHEET L S. M. VAUCLAIN.

ARTIGULATED LOGOMOT IVE.

APPLICATION FILED AUG. 6, 1908.

7 912,923. Patented Feb.16, 1909.

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ARTICULATBD LOCOMOTIVE.

APPLICATION FILED AUG.6.1908.

91 2,923. Patented Feb. 16, 1909.

7 SHEETS-SHEET 6.

S; VAUGLAIN.

ARTICULATED LOGOMOTIVE.

APPLICATION FILED AUG, 6, 1908,

Patented Feb. 16, 1909.

TSEBBTS-"SHEET 7.

frame, providin UNITED STATES rn rhn r enrich.

SAMUEL M. VAUCLAIN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR- TO THE FIRM OF BURNHAM WILLIAMS & COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

ARTICULATED LOGOMOTIVE.

Specification of Letters Patent.

Application filed August 6, 1908. Serial No. MLZM.

Patented Feb. 16, 1909.

T 0. all whom it may concern: i Be it known that I, SAMUEL M. VAUCLAIN,

a citizen'of the United States, residing in Philadelphia, Pennsylvania, have invented certain lm rovements in Articulated Locomotives, oi which the following is a specification.

My invention relates to certain improvements in the construction of a locomotive of thearticulated type, that is, one in which Inthis type of locomotive the usual practice has been to mount the boiler rigidly on one frame and allow it to overhang the other suitable. supports for the overhanging portion.

The main object of. my invention is to so construct a locomotive of this type that the boiler-will be supported rigidly on 'both frames, and to accomplish'this 1 make the boiler in two sections and couple the sections together by a flexible joint.

. A further object of'the invention is to so desis'n the boiler as to utilize the flexible connecting section as a secondary combustion chamber, and mount the superheaters at this point within the boiler.

A still further object of the invention is to utilize one section of the boiler as a feed water heater, the other section as the boiler I proper, or to use both sections as the boiler pr0per.-

In the accompanying drawings :-Figure 1, is a side view of an articulated com )ound locomotive illustrating my invention; *ig. 2,

is an enlarged side view of the center ortion .thetwo sections of the boiler; Fig. 8, is a plan view of the pivot coupling between the two sections of the boiler illustrated in Fig.- 2;. F1*S. 9 to 14. Inclusive, are views showing different modifications of thc fie. ible couplingiF g. 15, is a side view show mg the an rangement of piping between the two sections of boiler when one section is used as a feed water heater and the other as the boiler proper; Fig. 16, is a side view showing the arrangement of arts when both sections are used as the boiler; Fig. 17, is a view of a modification of the arrangement of the lower iping when both sections areused as the Boiler proper; and Fig. 18, is a side view of a locomotive illustrating my invention, the locomotive being of the type in which the low pressure cylinders are at the front end o'r' the forward frame, and the high pressure cylinders at the middle of the driving group- 1 A is the rear frame of an articulated compound locomotive and B is the front frame, each supported by a set of driving wheels and coupler together by a pin 0; the pin extending through openings in brackets to and 7) pro-- jecting from the frames A and B respectively.

Supported on the frame A and rigidly secured tLer'eto is a section D of the boiler D and supported rigidly on the frame B is a sec- -tion I) of t'? e boiler.

The section D has a fire box and t" -e section D has a smoke box Botlrsections are rigidly supported on their frames and are connected together by the flexible section E. Tris section can be constructed in many different ways, but allowance must be made for suflicient movement to permit the locomotive to pass around curves of the ordinary radius.

Referring to Fig. 3, the section E is made up of a series of rings e alternately secured to each otl or at their inner and outer edges, as clearly shown; 'tl ese rings are made of comparatively thin metal and there is enough spring in the metal to allow one section of t.;e boiler to move out of line with the other section without opening tile joints. 'ILese rings may be secured together in any man ner, but I preferably secure tie inner edges by rivets e, and secure txe outer edges by bolts 0, as illustrated in Fig. '7.

In order to prevent t"..e soot and cinders enter-in tle spaces between the rings I l'orm internal flanges e on each alternatering and t'. ere flanges overlap each ot'. er, as illustrated in Fig. 7, closing tue space between t"e rings and preventing the accumulation of soot orcinders in the narrowspaces. A curved flame plate e may also be provided place to tube sl eets d (1 some distance bottom; connected togct'i er byvertical tubes so as to direct the flame away from the! ring, if found desirable. Tris flame plate is clearly illustrated in Fig. 7, althoughomitted from t.-.e other figures of the drawings to avoid contusion.

In order to provide space for superheaters I do not extend ti o tubes of the sections of tlxe boiler to tie end of tfe sections, but

away from t e flexible section E, so as to form chambers 1*, F for the reception of super. eaters G and H; these superneaters can be of any type desired.

In t e pre..ent con itruction of locomotive, as siown in Fig. 1, tfe l iga pressure cylinders A are at t. e forward end of the frameA and t. e low pre :sure cylinders B are at tile rear end of t. 0 frame B, so t..at t e lpigii and low pressure cylinders are consequently clo e toget or. T. e cylindercasting A sup ports t 0 forward end of t e section 1.) of t e boiler and l 0 cylinder casting; B" supports tie rear end oft c section D of t. e boller.

I lave found it preferable to super. eat t e steam before it enters t. e Z ressure cyllnder and to resuper. eat it as it leaves t e ligi prcssu're cylinder and before it enters tze low pressure cyilnder, and in t e construction slown in t. e drawings, for instance Figs. 2 and 3, G is the super; eater situated between t e boiler'and t.e ligu pressure cylinder and H is t. e super: eater situated between t. e l pressure cylinder and t..e low pressure cylinder.

T;.e super. eater G consists of two headers g, g at t. e top, and two l eaders g, g at t. e

g, and tiel eaders g, g are connected to t. e steam supply pipe 1 leading from t e steam dome I in t c section D of t e boiler. T1 is pipe is provided witi the usual t .rottle valve 0.. The lower eaders g are connected through passages a to t e l igxi pressure cylinders A, one on each. side of tie locomotive.

T; e super. eater H consists of an upper header h and a lowerl eader it connected by a series of vertical tubes h. T, e lower leader has three necks, tle center neck it connects wit 1 t. e ex aust passage 76 from t e liga pressuile cylinders A t rough t'. e flexible pipe K, and t e necks 7a communicate with t e passages b leading to t e low prcssure cylinders B. T e exl aust from t e low pressure cylinders pa ac es t rough t' c pipe I) to the exhaust nozzle 6 in the smoke box d ott e locomotive.

The coi'u'icctiug pipe K consists of two sections 7:, If; the section 71'' is adapted to slide within a Sttlillllfl box in the section 7c and the tree end of each section is in the-form of a ball adapted tea socket is firmly secured one to the cylinder casting A and the other to the cylinder casting B g It will be understood that the particular 1 form and arrangement of the superheateri may be modified without departing from the essential features of my invention, as any type 01" superheater may be used.

if it is found desirable, 1 may couple the two sections of the boiler at'the top by a pin connection, as illustrated in Figs. land 8, the pin 0 alining with the inain coupling, pin 0 which connects the two sections, as illustrated in Fig. l, and this pin passes throuoh' projections er brackets C, J; the bracket 0 being secured to the upper portion of the section D and the bracket C being secured to theupper portion of the section D The pin 0 passes throughplain openings in the bracket C and through a bloct; c and this block rests in a cavity in the bracket C, and the block is held centrally by two coiled springs 0 also mounted in the cavity-,.. illustrated in Fig. 8, so that while the pin 0 acts as a pivot there is a certain amount of give to the pivot, owing to the construction of the'spriugs c In order to stitl'cn the connection between the two sections D and D of the boiler, i provide rods m, 'm, one on each side. of the boiler; these rods pass through the brackets in on the section it) and brackets m on the section Each bracket has a concave seat to receive the convex portion of a block m and between this block and the-washer m on the rod is a spring m so that the rod m is under tension at all times, b at the holes in the brackets are of sutiiricnt size to allow the rod to play when the section E'is flexed,

but when the engine is on a straight track external flanges at each edge and extending over the flanged ends of these rings are other rings 2 having internal flanges, and each ring is drawn tightly onto the rings e by bolts 6 as illustrated in Figs. 11 and 12.

Figs. 13 and 14 show plate rings similar to those illustrated in Fig. 3, with the exception thatclamping' rings '1), p are used to hold the edges of the abutting rings together.

Other means ot'lorming the llexible section E may be resorted to without departing from the essentialfeatures ol the invention. As illustrated in Figs. 2, 4 and 5, it will be noticed that the tubes 11' extend l roni the tube sheets (i oi the section l) of tho boiler to the tube sheets at the "lire box end, and the tubes d extend from the tube sheet d ol the sections as illustrated in Fig. 15.

' sections of the boiler.

tion S is attached to the upper portion of.

the tubes d. This construction is particu- I larly advisable when the section D" used as a feed water heater, the section D being the boiler proper. When both sections are used l as a boiler then the tubes may be of the same diameter and of the same number, or the l tubes in the section D may be greater in i diameter than the tubes in the section 1)".

When the section D is used as a feed water heater then I prefer to cou no the V atcr is pumped into the feed water section l) (by a donkey engine) at a low point, and this will displace an equal quantity of water which is already in the section and which will be forced through a pipe S connecting the upper portion of the feed water section D'- with the steam section D. As shown in Fig. 15, the pipe S is made in two sections S, S", the secthe section D of the boiler and the section S is connected to the lower portion of the section D of the boiler, and the two sections of the pipe are connected by a sliding ball and socket coupling 8 similar to that which couples the exhaust pipe of the high pressure i cylinder to the superheater, as illustrated in Fig. 2; the coupling has balls at each end adapted to sockets in the sections S, S of the pipe 8, and is made in two portions, one portion adapted to slide in the other.

A check valve 8 is used so as to keep steam from crossing to the feed water heater, but this check valve isnot absolutely necessary as if the heater section D is always kept entirely full of water no siphonic action would be possible.

When both sections of the boiler are used for the generation of steam,.'then I prefer to couple them together, as illustrated in Fig. 160: Fig. 18, by equalizing pipes P and T. The pipe P is connected to both sections below the water line, preferably as near the bottom as possible, and this pipe has balls at each end adapted to sockets in the elbows p which are attached to the boiler sections, and this pipe P is made in two sections, one adapted to slide in a head p on the other so that it will accommodate itself to any movement of one section independently of the 5 other.

The pipe T is the steam equalizing pipe and is coupled to the upper portion of each section' as shown, and at each end of this pipe are balls t t adapted to sockets in the elbows t (Fig. 16), or the domes l), D", (Fig. 18) and this pipe '1 is also made in two sections, one section having a head If" into which the other} extends, so that this pipe will accommodate. itself to the independent movement of the In Fig. 17 I have illustrated a modification of the arrangement ofthe lower pipe P, and in this instance the pipes 3 extend from each section of the boiler to l ands 72 secured to the cylinder castings or the frame of the engine, and formed in these heads are sockets for the reception of the ball ends p of the 1pipe P, which is made in two parts, one part aving a head into which the other extends so as to attain the same result as attained in Fig. 16, namely to allow the pipe to accommodate itself to the movement of the two sectionsof the boiler.

The arrangements shown in Figs. 15, 16 and 17 may be modified without departing from the essential features of the invention.

In Fig. 18 I have shown a locomotive in which the low pressure cylinders B are located at the front end of the forward frame B and coupled to a pipe I1 leading from the su 'ierheater H, and having a short couple to the nozzle in the smoke box; a curved supply pipe K leads from the high pressure exhaust passage .to the saddle 11 supporting the rear end of the boiler section D and the superheater Hal It will be seen bythe above description that I am enabled to make a boiler in two sections, one flexibly connected to the other so that it can be adapted for use in the construction of articulated locomotives which are very long and which require a boiler of a large capacity.

By my invention as above described, I secure each section of the boiler rigidly to its frame and pivot the frame together and flexibly connect the two sections of the boiler, which will allow the frames: free movement, thus dispensing with the ob jectionable overhanging features of the boilers in this type of locomotive. Furthermore, I provide a central combustion chamher which in many instances is desirable for the proper combustion of fuel.

I claim 1. A boiler made in two sections, one section flexibly connected to the other.

2. A boiler made in two sections,-'a com-' 3. The combination in a locomotive boiler,

of two sections, one arranged in advance of the other on the same longitudinal line, with an intervening flexible section coupling the two sections together. 1 i

4. 'l he combination in a locomotive boiler, of two sections, one arranged in advance of the other on the same longitudinal line and spaced apart, and an intervening flexible. section coupling the two sections together .and forming a combustion chamber, with tubes in each section.

5. 'l he combination in an articulated locomotive, of two frames pivoted together, a boiler extending over both frames and made in twosections, one section rigidly secured to one frame and the other section rigidly secured to the other frame, and a flexible section coupling oneseetion of the boiler to the other so that the boiler will accommodate itself to the movement of the two frames.

6. illG oonil'iination in a boiler made in two seotions, each soot-ion haying hidependent l hes, i it fiifilDlQ connecting section so tho tuln lar sections of the boiler, tli at the flexible connection being fr "uoes and forming a combustion chem.- l)

*4". The con iinstioii inv s holler consisting; of two se-rtioiis eoupled together by an intory I "iexiole sortion, lependei-it tube:

1 section, the roupl section being es end torzrlin :1 combustion *mluris of roii'ihustion and.

i l L lions, iiexihie coupling oonneoting one sec tion to the other, tuho shoots in each end of each section, tubes extending from one tube sheet to the other in each section, two pipes coupling the sections together, one pipe eonnested to the top of esoh section and the other pipe connected to each section near the bottom, each pipe being flexible.

'. l he eoinbiimtion in an articulated 10- comotive, of iiSiO i'rsiues coupled together, a boiler made in two sections, one soot-ion ,rigidly secured to'one frame and the other section rigidly secured to the other frame, a "flexible section coupling the two sections of the boiler, eech seetion hailing inoependent tubes therein, and e i'lexible ipe ooupling the interior of one section Wits the interior the other section.

'l he combination in an artioulsted iooonioti've, of two ironies, sboilei mounted above the fro-Ines made in two sections, one section rigidly secured to one frame and the other section being rigidly secured to the other frame, flexible connecting member Eonnectingr the two sections and "forming 1r (combustion chamber, tube sheets in ell-oh section arranged some distance from the end, it suporhester mounted in theend of each section, higrh pressure cylinders on one frame and low pressure cylinders on the other I tending from one se lio'n ol tho boiler and the 'lrznne, one superheete coi'umm'ilooting with one section of the boiler and with tho'high pivssure steam passage, the other superhester connected to the low pressuro'steoin passage and to the exhaust psssage leading from the high-pressure cylinders.

'iliiristion int.- loornotive of Hi type, of two-frames pivoted 355 through ll 9 tubes ol one section,

T to err onunodole il frames and mode in two sections flexibly convneoted, one section rigidly mounted on one frame and the other section rigidly mounted, on the other frame, high pressure C- X "llIl(l8lS' carried by one frmnglow pressure cylinders carried by the otherlrsine, two superheeters one connected to the boiler and to the supply pipe leading to the high press uro cylinders, the

other suporheiiter connect-ed to the exhaust pipe of tho high pressure cylinder SLHLl to the supply pipe of the low pressure cylinder, the exhaust pipe between the high pressure cyl- Q indor and the suporhestor heingilexihlo so to the movement and.

l the engine ironies.

a 16. The combination in a holler made in holler extending over both frames, sold. dieing nuide H1 two SCCUODS, a flexible inem.

13. The roi'nhinntion in or articulated locomotive, ol two ironies pi. togeth r, 1

her roupling the two sections and l'or'niing a combustion chamber, tubes in each section,

e lire hox forming, part or or boiler, sinolre hon lornnng' pr oi the llbllfil', [1,310. o. ll

9 session of the or the oil e ipe rounesting the water spires one of the boiler with the Wl-lil s of the other tion' of the boiler.

14. The combination. in n holler ins-lo in t. sections, a. coupling member con sting the two sections, said coupling member being made up of oseries of rings sttsohed alternately at their inner and outer edges.

15. The combination in s holler made in two sections spaced apart, a, rouplin mem 'locr ozoupyin'g the spec tween E219 sootions, said coupling member being made upooilor' Itogether, a boiler extending over both of a series of list rings attached alternately at the inner and outer edges iOlillil'iQfiflfiXl his connection, with overlapping lisp/ es on some of the plates forming protecting shield.

' two sections spaced sport, a connecting menioer consisting of a series of rings secured togethor alternately at the inner and outer edge, and o doller sing ilsnie plate st :1 point where the flexible menilioris coupled to one l of the sections, so as to direct the ilameswoy from the connecting pistes.

17 'l'hm omhiimtion in a lommotive, of two frames pivoted logolhorfs holler extending; over ho'rh lldillPS mid llltulfl in two sections, o'nosorl ion rigidly stturhod to one. frame, the

other section riogidl stloched lo theother.

frame, s. iloxihlc member ronnerting the two sections ol the lrodur, two hrarkel's, one ex" frame, the other section rigidly attached to the two brackets, said pivot pin passing through holes in one bracket and through a block carried by the other bracket, and springs at each end of the block.

19. A boiler made in two sections, a flexible coupling connecting the two sections, and a rod at each side flexibly attached to the said sections.

20. The combination in a locomotive of the articulated type, of two frames pivoted together, a boiler extending over both frames and made in two sections, one section rigidly attached to one frame, the other section ri idly attached to the other frame, a flexib e member coupling the, two frames, brackets on each sideof each section of the boiler, rods at each side of the boiler extending through the brackets, and springs between the ends of the rods and the brackets forming a flexible auxiliary coupling.

21. The combination in an articulated locomotive, of two frames pivoted together, a boiler extending over both frames and made in two sections, one section carried by one frame and the other section carried by the other frame, a flexible member connecting the two sections of the boiler, brackets on each section at each side and each bracket concaved to form a socket, a rod at each side of the boiler extending through both brack ets at each side, a block at each bracket having a convex portion adapted to the sockets in the bracket, and a s rin r mounted be tween thehead. of the rod and the blocks, the

' rodsforming auxiliary connecting members.

22. The combination in a boiler made in two sections, a flexible member connecting the two sections. independent tubes in each section, one section forming the boiler proper and the other forming the feed water heater,

and a pipe leading'from the upper portion of the feed water section of the boiler to the lower portion of the boiler section proper, said pipe being flexible.

23. The combination in a boiler made in two sections, of a flexible member connecting the two sections, independent tubes in each section, a pipe connecting the upper portion of one section to the upper portion of the other section, and a pipe connecting the lower portion of one section to the lower portion of the other section, both pipes being flexibly connected.

24. The combination in an articulated compound locomotive, of two frames pivoted together, high pressure cylinders on the rear frame, low pressure cylinders on the forward frame, driving wheels for each frame, a boiler extending over both frames and made in two sections, a flexible member coupling the two sections of the boiler, the rear section of the boiler having the fire box and recessed at its forward end for the reception of a superheater and having independent tubes, the forward section having a smoke box at its forward end and recessed at its rear end for the reception of a superheater and having independent tubes, a superheater in the recess in the forward end of the rear section of the boiler, said superheater being connected to the steam space in said section and to the stem; supply pipe of the high pressure cylinders, a superheater in the recess in the rear end of the forward section and coupled to the exhaust passage leading from the high pressure cylinder and coupled to the inlet passage leading to the low pressure cylinder, and an exhaust pipe extending from the low pressure cylinder to the smoke box.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

SAMUEL M. VAUCLAIN.

Witnesses:

GnAr'roN Gnnnxooen, Cans. A. Wisems.

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