W, DALTON. STEAM , APPLICATION EILET FIEB, 20, l912,

NAVNESS 4. W. DALTON. STEAM BOILER SUPERHEATER, APPLICATI0N FILEID FEB. 20, 1912. 1,031,693. Patented July 9, 1912, 2 sHEETS-S HEET

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| UNITED STATES PATENT OFFICE. WILLIATI DALTON, or SCHENECTADY, NEW YORK, sTEAM-BOILEER SUPERREGATER. få,031693. . Specification of Letters Patet, Patented July 9, 1912. Application filed February 20, 1912. Serial No. 678,835. . To all whom it may concern I of the location of the superheating elements, Be it known that I, WILLIAM DALTON, of as smoke box and fire tube . Schenectady, in the county of Schenectady Each of these classes is necessarily open to and State of New York, have invented a certain practical objections, the smoke box 60 certain new and useful Improvement in t?? e not being capable of developing a suf Steam-Boiler Superheaters, of which im ficiently high degree of superheat to be provement the following is a specification. fully effective, and, further, involving a My invention relates to superheaters for material extension and obstruction of the steam of the type, and smoke box, and the fire tube type requiring. 85 0 more particularly to those having a com the use of flues of materially greater than bustion chamber in the waist of the boiler, ordinary diameter, and superheating pipes and its object, is to provide a superheating of great length, and obstructing the passage appliance which shall be readily applicable of the gases through the superheating tubes. iniboilers of such character, without modifi A comparatively shall number of locomo-. 70 5 cation of the standard form and dimensions tives have also been fitted with superheaters of the boiler shell and tubes, and in which which are located in a compartment inter a sufficient area of heating surface to insure posed between the rear steam generatinga. a high degree of superheat shall be pro section, and the front water heating section. id with a substantial reduction in the of a boiler, said compartment constituting 75 20 length of superheater pipes, as compared an intermediate combustion chamber in with prior constructions. ... front of the tubes. The improvement claimed is hereinafter The special purpose of my invention is to fully set forth. . - construct a superheating appliance, which In the accompanying drawings: Figure 1 shall be exempt from the objections above 80 25 is a vertical longitudinal central section stated, and in which the heat of the gases of - through the rear portion of a locomotive combustion shall be utilized as fully as prac boiler, illustrating an embodiment of my in ticable by presenting the superheating ele vention; Fig. 2, a vertical transverse section through the same, on the line aa of Fig. 1, thements to their to actionthe tubes. in their A passagereduction from of 85 30 the left hand half thereof showing the volume of the space occupied by the super Superheating pipes in section on the line b b heating elements is also designed to be of Fig. 1; Fig. 3, a plan view, partly in sec effected. . . tion, and on an enlarged scale, of the header, In the practice of my invention, I locate detached; and, Fig. 4, a section, on a fur the superheating appliance within the com 90 ther enlarged scale, through the header and bustion chamber, at the front of the firebox, superheater pipe connections, instead of in the or the fire tubes, My invention is herein exemplified as ap or in front of the fire tubes, as in prior prac plied in a locomotive boiler of one of the tice, thereby utilizing the higher heat of the present standard types, having an outside products of combustion in their direct pas 95 40 firebox, 1, connected to a waist, 2, through sage from the firebox to and through the which a plurality of fire tubes, 3, extend combustion chamber, and correspondingly from a flue sheet, 4, at the front end of a reducing the aggregate length of the pipes. combustion chamber, 5; formed in the waist through which the steam traverses while be-, of the boiler, to a smoke box (not shown) at ing Subjected to the superheating action of 00 45 the forward end of the waist. The inside the products of combustion. In order to fire box, 6, which adjoins, and communicates admit of the convenient connection of the directly with, the combustion chamber, is steam supply and delivery conduits of the provided, at bottom, with a grate, 7, of any superheater, the volume of the combustion suitable and preferred construction, and a chamber, 5, is increased by the interposition 105 50. firing opening, 8, (one or more) controlled of a transverse bridge wall, 9, of fire brick, by a door in the usual manner, is formed in between the front of the grate, 7, and the its rear end. v. front water wall of the firebox, said bridge Prior practice in locomotive boiler super wall being Supported on a bearer, 9", se heaters has, so far as my knowledge and in cured as its ends to the mud ring of the fire 55 formation extend, embodied practically only box. A transverse header, 10, which is a two classes, known respectively, by reason substantial metallic casing, of segmental 1,031,698 form, is supported in the space between the holes in the partition, 10, and nuts, 15. bridge wall and the front water wall of the Tight joints are insured by ball or spherical firebox, said header being divided by a lon faced joint rings, 13, formed or fixed on the itudinal partition, 10, which is perforated ends of the superheater pipes, and fitting in y a plurality of bolt holes, into a saturated correspondingly shaped recesses in the 70 steam compartment, 10, and a superheated yokes and the header. In order to protect steam compartment, 10°. The partition, 10, the rear return bend elbows, 13, and the is rearwardly inclined from the middle to connections of the superheater pipes to the the ends of the leader, so that the saturated header, from the direct action of the high steam compartment is of gradually increas heat of the gases passing over the top of the 75 0. ing transverse sectional area from its mid bridge wall, a segmental shield plate, 17, of dle to its ends, and the superheated steam. fire clay or other suitable refractory mate compartment is of gradually diminishing rial, is connected to the bridge wall, a short transverse sectional area from its middle to distance below its top, and projects for- : 15 each of its ends, as clearly shown in Fig. 3. Wardly, therefrom, above the superheater 80 T. Saturated steam supply nozzles or connect pipes, 13. ing members, 10, extend downwardly from . The high efficiency and value in the gen the header, 10, adjacent to its ends, said noz eration of steam, of the heating surface pre zles communicating with the saturated sented in a combustion chamber which ad 20 steam supply compartment; 10, and a sui joins and directly communicates with the 85 . perheate steam delivery nozzle or connect : firebox of a locomotive boiler, as compared ing member, 10, extends downwardly from with the heating surface of the tubes, is well the middle of the header, said nozzle com-: and universally recognized by those famill municating with the superheated steam com iar with the operation of boilers of this : 25 partment, 10°. Elbows, 10 and 10º, árecon type, and these combustion chambers are 90 nected to the nozzles, 10' and 10, respec now being applied to a considerable extent tively, for the attachment of saturated Steam in railroad service. supply pipes, leading from the dome || II believe myself to be the first who has other suitable portion of the steam spage. rendered the advantage of the combustion the boiler, ?????’ of a superheated steamide chamber available for the superheating of 95 SO livery pipe leading to the cylinders of the steam, by locating within it, a superheating appliance of such construction as does not islocomotive, controlled respectively. by an outside Said throttle ???????? valve of involve the perforation of the water space any suitable and preferred construction, lo or the use of tubes of larger diameter than cated in any convenient position adjacent to those of boilers working saturated steam, i00 35 the cylinders. The lower end of the com and in which a substantial reduction of the bustión chamber space containing the header length of the pipes within which the steam is closed by a bottom plate 5, which may be is superheated, is effected, without impair fitted with a discharge. hopper, 11 (one or ment of the capacity of the appliance to af 40 more) for the removal of any cinders that ford as high a degree of superheat as ex- 105 may accumulate, on the bottom plate. It perience has demonstrated to be advisable. will be obvious that if preferred the com fdo not therefore consider my invention to partment, 10, of the header may be used as be limited to the specific embodiment herein the saturated steam compartment, and the selected for illustration, and desire to in 45 compartment 10, as the superheated steam clude within it such structural modifications 110 ... compartment, the supply and delivery pipes. as embody its spirit and essential character ', being connected accordingly. . . . listic features, and as rhey be within the or A plurality of ????????lly extending dinary skill of a mecanie familiar with lo: loops orireturn bends of superheater pipes, comotive construction and operation. 50 i3, disposed side by side in substantially ra I claim as: my invention, and desire to se 115 dial planes of the boiler, is located in the cure by Letters Patent:-. . . . . combustion chamber 5, adjacent to the shell 1. The combination, with a locomotive : . ???? ???? members composing each of said boiler having a combustion chamber adjoins re preferably, as shown, in the ing the fire box, of a superheater located in

ble returns, extending alter said combustion chamber and having down- 120 wardly, and rearwardly, and the wardly extending steam: supply and deliv

ery connections leading to the exterior of inds of each loop being connected the firebox, forward of the grate thereof. rated steam compartment and the 2. The combination, with a locomotive superheated steam compartment, respec boiler having a combustion chamber adjoin- 125 60 tively, of the header, 10. The attachment. ing the fireb?x, of a superheater located in . of the superheater pipes to the header is said combustion chamber and having down preferably, as shown, effected by means of wardly extending steam supply and de ingyokes, on 14,the whichsuperheater are drawn pipes, to and a tight connected bear livery connections leading to the exterior 65 to the header, by bolts 15, passing through of the firebox, forward of the grate thereof, 130

- 1,081,693 8 and means for protecting joints of the supéfeater from the direct action of the wall and the front water wall of the fire 60 heat of the products of combustion passing box and having saturated and superheated from the firebox. ? steam compartments communicating with 3. The combination, with a locomotive the ends of the loops of pipe and down boiler having a combustion chamber adjoin Wardly extending steam supply, and deliv ing the firebox, of a bridge wall inter ery connections leading to the exterior of 65 posed between the front of the grate and the the combustion chamber, forward of the front water wall of the firebox, and a super grate of the firebox. O 8. The combination, with a locomotive. heater located in the combustion chamber boiler having a combustion chamber ad and having steam supply and delivery con joining the firebox, of a bridge wall inter 70 nections leading to the exterior thereof, be posed between the front of the grate and tween the bridge wall and the front water the front water wall of the firebox, a super wall of the firebox. heater comprising a plurality of loops or re 5 4. The combination, with a locomotive boiler having a combustion chamber ad turn bends of pipe extending longitudi joining the firebox, of a bridge wall inter nally in the combustion chamber and a seg 75 posed between the front of the grate and the mental header located between the bridge front water wall of the firebox, a super wall and the front water wall, of the fire 20 heater located in the combustion chamber box,steam and compartments having saturated communicating and superheated with and having steam supply and delivery con the ends of the loops of pipe and down 80 nections leading to the exterior thereof, in wardly extending steam supply, and deliv front of said bridge wall, and a bottom plate ery connections leading to the exterior of closing the space between the bridge wall the combustion chamber, forward of the 25 and the front water wall of the firebox. grate of the firebox, and a shield of refrac 5. The combination, with a locomotive tory material projecting forwardly from the boiler having a combustion chamber adjoin bridge wall above the loops of pipe. ing the firebox, of a bridge wall interposed 9. The combination, with a locomotive between the front of the grate and the front boiler having a combustion chamber adjoin 30 water wall of the trebox, a superheater lo ing the firebox, of a superheater comprising cated in the combustion chamber, and hav a plurality of loops or return bends of pipe, 90 ing steam supply and delivery connections extending longitudinally side by side in the leading to the exterior thereof, in front of combustion chamber, in substantially ra said bridge wall, and a shield of refractory dial planes of the boiler, and a transverse 35 material, connected to and projecting for header, of segmental form, having compart wardly from the bridge wall above the ments connected to the rear ends of said superheater. loops of pipe and downwardly extending 95 6. The combination, with a locomotive boiler having a combustion chamber ad steam supply and delivery connections lead 40 joining the firebox, of a superheater com ing to the exterior of the combustion cham prising a plurality of loops or return bends ber, forward of the firebox grate. s of pipe extending longitudinally in the com 10. A header for a locomotive boiler OO bustion chamber and a header located in superheater, consisting of a casing of seg arear of said loops of pipe, and having sat longitudinalmental form, partition, divided bywhich a double is perforated inclined 45 urated and superheating compartments com in a longitudinal plane by a plurality of municating with the ends thereof and down bolt holes, into a saturated steam compart 05 wardly extending steam supply and delivery ment of gradually increasing transverse sec connections leading to the exterior of the tional area from its middle to its ends, and combustion chamber, forward of the grate a superheated steam compartment of gradu 50 of the firebox. ally diminishing transverse sectional area 7. The combination, with a locomotive from its middle to its ends, said header hav II 0 boiler having a combustion chamber ad ing, on its convex side, nozzles or connecting joining the firebox, of a bridge wall inter members communicating with said steam posed between the front of the grate and the compartments for the connection of pipes 55 front water wall of the firebox, and a super extending below the header. heater comprising a plurality of loops or WILILTAM IDATTON. return bends of pipe extending longitudi Witnesses: nally in the combustion chamber and a seg (. (I. STILEs, mental header located between the bridge FI. IuINDEN KoIII,.