US1165977A - Steam-boiler superheater. - Google Patents

Description

"J. KINDERVATER. V

STEAM BOILER SUPERHEATER. APPLICATION FILED MAR. 25, 1908. RENEWED MAR. 19.1912.

1,1559%?) Patented Dec. 28,1915.

4 SHEETSSHEET I.

J. KINDERVATER. STEAM BOILER SUPERHEATER. AP'PLIcAHoN FILED MAR-25, I908. RENEWED MAR. 19,1912.

Patented Dec. 28, 1915.

4 SHEETS-SHEET 2.

J. KINDERVATE-R.

STEAM BOILER SUPERHEATER.

APPLICATION FILED MAR. 25.- 1908. RENEWED MAR 19, 1912.

Patented, Dec. 28, 1915.

4 SHEETSSHEET 3.

ivlltllnlrn wl 1. KINDERVATER. STEAM R SUPERHEATER. APPLICATION man MAB 1 1165 97? 908. RENEWED MAR. i 9.1912.

BOILE Patented Dec. 28, 1915.

4 SHEETSSHEET 4.

nnrrnn snares i agnnr canton.

JULIUS KINDERVATER, 0F RICHMOND, VIRGINIA, ASSIGN'OR, BY DIRECT AND MESNE ASSIGNMENTS, T0 LOCOMOTIVE SUPERHEATER COMPANY, OF NEW YORK, N. Y., A

CORPORATION OF DELAWARE;

STEAM-BOILER, SUPERHEATER.

Specification of Letters Patent.

Patented Dec. 28,1915.

Application filed March 25, 1908, Serial No. 23,175. Renewed March 19, 1912. Serial No. 684,811.

To all whom it may concern:

Be it known that I, JULIns KinnmzvA'rnR, a citizen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented certain new and useful Improvements in Steam- .Boiler Superheaters, of which the following is a specification.

My invention relates to steam superheaters, and more particularly to locomotive steam superheaters of that type in which super-heater tubes are arranged in the fines of the locomotive boiler and are connected with headers located in frontof the tube sheet in which the fines are set. In devices of this class, as is well known, the saturated steam header is connected with the dry pipe of the boiler, and the superheated steam header is connected to the steam chests of the locomotive engines. The steam from the dry pipe passes from the saturate steam header through all of the superheater elements into the superheated steam header, whence it flows to the cylinders. Heretofore, a great objection to such super-heaters has been the difliculty of arranging the ele ments in such a manner that ready access may be had to.any of them for inspection or repairs. In many of the well known types, it is necessary to dismantle practically the entire structure in order to remove or replace a single tube.

The primary object of my invention is, therefore, to provide a construction in which any superheater tube or element may be quickly removed, independent of any other. V

A further object of the invention is to so arrange the parts that ready access may be had at all times, not only to theysuperheater elements for inspection or repair, but also to all the associated fines, for cleaning the same.

A further object of the invention is to simplify the means for securing the tubes to the headers, and to so arrange the parts that the least possible number of bolts is required to hold the tubes in position.

A further object of the invention is to provide an improved construction of dam per for controlling the draft through the fines employed for super-heating.

With the a ove and other objects in view.

sition in the boiler, and parts being broken away. Fig. 2 is a longitudinal vertical seci tion thereof substantially on the line 22 of Flg. 1, parts being broken away. Fig.

u is a longitudinal horizontal section, substantially on the line 3--3 of Fig. 1. Fig.

4. is a fragmentary sectional plan showing the damper and associated parts. Fig. 5 is an enlarged detail view of some,of the parts shown in Fig. 3. Fig. 6 is a side elevation of a part hereinafter described. Fig. 7 is a fragmentary vertical section through the steam headers. Fig. 8 is a fragmentary view similar to Fig. 2, but showing a slightly modified arrangement. Fig. 9 is-an enlarged plan view of a modified form of one of the parts hereinafter described. Fig. 10 is a transverse section thereof on the line 1010, and showing, in addition, a fragment of one of the supen heater tubes or elements. Fig. 11 is a fragmentary side elevation showing an arrangement for controlling the damper.

Beferringto the drawings in detail, 1 represents the boiler shell. and 2 the usual dry pipe, provided with a fitting, where it passes through the tube-sheet t. The. ordinary fire tubes are designated by the numeral G, and, as is customary in such apparatus, additional large fines 5, are provided, in'which are located the snperheater elements or tubes 7. As clearly shown in Fig. 1, I arrange these large fines in a plurality of vertical rows, and preferably group these rows in pairs, the distance between the members of any pair, and the distance between the pairs, being different. All the rows may, however, be equally spaced if desired. The SillllllililG steam headercompr ses a body portion, 8, having a flange, 8, connecting with the end of the dry pipe, and a plurality of branches, 9, which may be either integral with the body of the header or bolted thereto. The body portion 8 extends substantially horizontally, and is disposed superheated steam header,

above the fines 5, while the branches 9, project from the bottom of said body portion substantially at right angles thereto, and extend downwardly between the fines of each pair of vertical rows.

The superheated steam header is the counterpart of the saturate header, but is reversely arranged. As shown in Figs. 1 and 2, it comprises the horizontally extending body portion 10, and the upwardly projecting branches 11. It will be particularly noted that the branches 11 are similar to and correspond exactly with the branches 9, and further that these branches 9 and\11, are not staggered, but disposed .in perfect alinement, one behind the other. This arrange- .ment provides a large free space between'the ,pairs of branches for lnserting and remov mg the superheated tubes, ashereinafter'described, and also admits of ready access be ing had to the large flues for lnspection,

cleaning, or repairs. Flanged couplings, 24:, project from the front of the body ofthe 10, and from these extend suitable pipes (not shown) to the steam chests of the engines.

' As clearly shown in Fig. 7, the two headers comprise but a single casting, the respective and corresponding branches being united by of any pair of branches.-

integral webs 22. Air spaces 21, are, how-' ever, preserved between the branches of the two headers. in order that one may be insulated from the other as much as possible to avoid the cooling of the superheated steam by saturate steam, and in order that the hot gases and products of combustion may circulate freely between the headers.

In order to facilitate the ready detaching of any superheater tube from the headers, I employ the novel construction illustrated in detail in Fig. 5. By reference to this figure,

it will be seen that I provide anchor blocks, 12, into which the ends of a pair oftubes are secured preferably by expanding and heading as indicated at 17. Bosses 16 are formed on the anchor blocks, and the sides of the branches 9 and 11 are provided with seats, 19;, to receive these bosses. Packing rings 18, of asbestos, or other suitable material are preferably interposed between the beadedends of the tubes and the seats, 19.-

Yokes, 13, are arranged so as to bridge two anchor blocks 12, and are provided centrally with openings through which pass the ends of bolts 14-. As clearly shown in Fig. 5 each of these bolts has a square portion at its middle which lies within the space 21 'between two branches, and is provided with threads and nuts 20, at each end. A s ngle bolt, therefore, serves to secure in position against the headers the tubes on both sides With the single return construction illustrated in Fig. 2, it is evident that one bolt serves to hold all the tubes in a pair of large flues. As shown in Fig. 8, however, I may employ the double return arrangement, and in this case it will be seen that the single bolt takes care-of all the tubes in two pairs of lines. In either of the abovev constructions, it will be understood that the tubes of each pair are con nected at theirrear ends by U-shaped coument, I dispensdwith the yokes, altogether,

and use, an anchob, plate 42, having four tube openings 16, instead of two,-and pro-. vided with strengthening ribs, 47. It is also formed with a central opening for the reception of the bolt 14. Also in these figures, I have illustrated the use of a gasket, 45, of soft copper or the like, in place of the asbestos packing above referred to. In this case the ends of the tubes are faced to re-' ceive the gasket. 1

It is evident that either type of anchor plate above described may be employed with either the single or double return tube con struction, and that this use of the single clamping olt for a plurality of tubes greatly lessens the labor of removing or detaching any llllbLLOl' set of tubes. Furthermore, the arrangement of header branches between the alternate rows of fines as described, and the connection of all tubes to the sides of these branches, renders possible the ready removal of any tube or set of tubes desired, without in the least disturbing any other tube or its con- 7 nections. This is a feature of great practical importance. r In super-heaters of this character it is'necessary toprovide some means for controlling the flow of gases through the lines in, order to prevent the burning of the supe'rheatcr tubes when no steam is passing through them. To this end Iprovide a casing 25 arranged in front of the headers, and secured to the boiler shell as by brackets 26. At its lower edge the casing is secured to the upper part of the header 10 as at 27, and also extends down over the front face of this header till. it abuts at its ends againstplates 29, one at each side of header 10, supported by brackets 29 attached to the boiler shell. These plates 29 help to form the bottom of the inclosure of which casing 25 is the front wall, and angle irons 28, on either side of the header, serve to secure the two parts together.

Lying in the same plane as the plate 29, and coiiperating therewith to form the bottom of the inclos1u-e,-is'a pivoted damper, 30, secured to a shaft 32 which extends transversely of the boiler shell. When in its.

closed position, as shown in full lines in Fig. 2, the damper abuts at one edge against a flange3l formed on the header 10, and at its other edge, against brackets 33, supported by the tube sheet 4, and boiler shell. A crank 34.-

. is secured to the shaft 32 at one end outside the boiler, and this in turn is connected by means of a link with the piston rod 35 of a small cylinder 36. This cylinder is suitably connected by means of a pipe with the main engine cylinder in such manner that when I off from the engine, a spring or counterweight serves to throw the damper to its closed position, and thus entirely interrupt the passage of the products of combustion v through the superheating lines,

In the construction shown, a crank lever 3 F is mounted outside the boiler shell on 25' the extended end of the shaft 32, and a coil spring 35 has one end attached to the end of this lever, and the other end anchored to a bracket 36, secured to the shell. Other arrangements may, however, be employed.

In order to render the headers and superheate elements easily accessible, a series of open'ngs are formed in the casing 25 opposite the fines, 5. These openings are normally closed by means of removable plates 37, held in position by clamps 38. By removing any desired plate access may be had to the corresponding part of the superheater structure.

proximately equal to the length of said branches, the corresponding branches of said headers being disposed one directly behind the other in substantial alinement, and superheater tubes communicating with the sides of the said branches.

2. In a superheater for locomotive boilers, superheated and saturate steam headers, each of said headers comprising a body portion and a plurality of branches extending substantially at right angles thereto, the corresponding branches of the two headers bemg secured together and disposed one behind the other in substantial alinement, but

spaced apart and said body portions lying at, opposite ends of said alined branches, and superheater tubes communicating with the respective branches.

3. In a superheater for locomotive boilers, superheated and saturate steam headers, each comprising a horizontally extending body portion and substantiallyvertically extending branches, projecting therefrom,

the corresponding branches of said headers being disposed one behind the other in substantial alinement, said headers being formed integral with each other, but separated by an air space, and the said body portions lying at opposite ends of the vertical alined branches.

4. In combination with a locomotive boiler, a plurality of vertical rows of large flues extending. therethrough, saturate and superheated steam headers comprising oppositely disposed body portions having longitudinally alined branches extending there from in front of said lines between the vertical rows thereof, and sup'erheater tubes located in said lines and having their ends secured to the sides of said branches.

5. In combination with a locomotive boiler, a plurality of vertical rows of large fines extending therethrough, a saturate steam header comprising a horizontal body portion disposed above said fines and provided with downwardly extending branches projecting in front of said fines and between the vertical rows thereof, a superheated steam header comprising a horizontal body portion disposed below said flues, and provided with upwardly extending branches corresponding with said first named branches, the branches of .one header being disposed directly behind the corresponding branches of the other, and superheating tubes. located in said fines and communicating with said respective branches.

6. In combination with a locomotive boiler, a plurality of rowsof fines, saturate and superheated steam headers disposed one behind the other in front of said dues in substantial alineinent and extending between the rows thereof, superheater tubes disposed Within said lines and having their ends set into anchor blocks, and means for securing said anchor blocks against the sides of said headers, said means comprising a yoke spanning two adjacent blocks and a single bolt passing between said headers through said yoke and serving to maintain two pairs of tubes in position on each side of said headers.

7. In a superheater for locomotive boilers, saturate and superheated steam headers having branches arranged one behind the other in substantial alineinent and spaced slightly apart, superheater tubes disposed on each side of said branches and having their ends secured in anchor blocks, seats formed in the sides of said branches to "re;

ceive said anchor blocks, yokes spanning ad- 'acent' pairs of blocks on each side' of a ranch, and double ended bolts passin through said yokes having rectangular mi dle portions lying in the space between two branches and serving to hold the anchor blocks on each side against their seats. 8. In a superheater for locomotive boilers, saturate and superheated steam headers having branches arranged one behind the other in substantial alinement, and spaced slightly apart,.superheater tubes having their ends set into anchor blocks, seats formed in said branches to receive said anchor blocks, a yoke bridging two adjacent blocks, and abolt passing through said yoke and serving to maintain both anchor blocks in position. 9. In a superheater for locomotive boilers, saturate and superheated steam headers having branches arranged in substantial alinement and spaced slightly apart, super- -heater tubes disposed on each side of said branches and having their ends set into anchor blocks, seats formed in opposite sides of said branches to receive said anchor blocks, yokes bridging two adjacent blocks on each side, and a bolt passing through a pair of opposing yokes and serving to se-.

cure both pairs of anchor blocks in position.

10. In combination with a locomotive boiler, a plurality of vertical rows of fines extending therethrough, said rows being disposed in pairs, the members of each. pair being spaced farther apart than the members of one pair from those of another, and a steam header, having a substantially horizontal body portion, and branches extending therefrom and projecting between the members of each pair of vertical rows of fines.

11. In combination with a locomotive boiler, a plurality of vertical rows of large fiues extending therethrough, a steam header having a substantially horizontal body portion, and a plurality of branches extending therefrom and projecting between alternate vertical rows of fines, a second steam header having branches arranged behind those of the first in substantial alinement, and superheater tubes disposed within said fiues and connected with each side of each of said branches.

12. In combination with a locomotive boiler, a plurality of fines extending thereth'rough and terminating in the usual tube sheet, superheater tubes arranged within said fines, steam headers, to. which said tubes-are connected disposed in front of said tube sheet, one of said headers comprising a horizontally extending body, a casing comprising a front wall extending from the front face of said body to the boiler shell, and inclosing said headers, and a floor to said casing extending from said body to the able and constituting a damper for controlling the draft through said flue's.

13. In combination with a locomotive boiler, a plurality of fines extending therethrough and terminating in the usual tubesheet, superheater tubes arranged within said 'flues, steamheaders with which said.

tubes connect, disposed in front of said sheet, a casing inclosing said headers, said casing being provided with openings through which access may be had to said tubes, and removable plates normally closing said openings.

14. In a superheater for locomotive boilers, the combination with a steam header member located in the smoke box, and super heating tubes adapted "to be connected to said header member, of means for attaching said tubes to said header member, such means comprising anchor blocks into which one or more tube ends are permanently. secured, seats in said header member adapted to receive said anchor blocks, a yoke bridging two adjacent blocks, and a bolt passing through said yoke and serving to maintain I the parts in position.

15. In a superheater for locomotive boilers, the combination with a header structure, and superheater tubes adapted to be G011". nected therewith and having enlarged ends, of means for attaching said tubes to said header structure, such means comprising anchor blocks having openingsin which such enlarged ends of the labes are seated, a yoke bridging two adjacent blocks, and a bolt passing through said yoke and serving to maintain the parts in position.

16. In a super-heater for locomotivl boilers, a saturate steam header, a super heated steam header, each of saidheaders comprising a body portion and a plurality of parallel branches communicating therewith, said body portions being separated by a distance approximately equal to the length of said branches, and lying at oppo-' site ends thereof, all of said branches being rigidly united to the body portions of both headers, said branches being separated from each other by open air s aces, and seats formed on said branches a apted to receive the ends of superheater tubes.

17. In a steam 'superheater, a saturate steam header, a superheated steam header, each of said headers comprising a body portion and a plurality of parallel branches communicating therewith, each branch of each header being secured directly to both 'tions substantially at right angles thereto,

and being disposed in parallel spaced relation with open slots between the same, and seats formed on said branches adapted to receive the ends of superheater tubes.

19. In a steam superheater, a saturate steam header, a superheated steam header,

each of said headers comprising a body portippiland a plurality of branches communi- T'Eating therewith, said body portions lying substantially parallel with each other, each branch of 'each 'header being formed integral "tvith both headers, thereby uniting said eaders into a rigid structure, said branches extending between said body portions and being disposed in parallel spaced relation with open slots between the same, and seats formed in-said branches adapted to receive the ends of superheater tubes.

20. In a superheater for locomotive boil ers, saturate and superheated steam headers, each comprising a horizontally and transversely extending body portion, and a plurality of branches projecting therefrom substantially at right'angles thereto, said branches extending between and rigidly connecting said body portions, and being disposed in spaced parallel relation with open' slots between the same and adjacent branches communicating at opposlte ends with the body portions of their respective headers.

21. In a steam superheater, a header structure comprising an integral casting of substantially rectangular shape, such casting comprising main saturate and superheated steam compartments located at oppo site sides of the rectangle, and a plurality of branches extending between the same, and lying side by side in parallel relation, adjacent branches communicating at their opposite ends with their respective/compartments, and a coupling forming an inlet to said saturate steam compartment and located centrally thereof, and a pair of couplings projecting from the fa e of said superheated steam compartment adjacent opposite ends thereof, and formihg outlets.

22. In a superheater for locomotive boilers, the combination with the usual tube sheet, of saturate and superheated steam headers disposed in front of the same, each of said headers comprising a body portion and 'a plurality of branches communicating-- between said body portions and being dis--' therewith, said body portions extending horizontally and substantially parallel with the tube sheet, and said branches extending between said body portions at substantial right angles thereto, all of said branches and headers being rigidly and permanently connected to form a unitary structure, and said branches being disposed in parallel relation and separated by air spaces, superheater tubes having their ends communicating with the branches of the respective headers, and bolts passing through the said air spaces between the branches and serving to maintain the tubes in position.

24:. In a superheater for locomotive boilers, the combination with the usual tube sheet and smoke box, of a saturate steam header comprising a body portion located adjacent the tube sheet in the upper part of the smoke box, and extending horizontally transversely thereof, and a plurality of branches communicating therewith, a superheated steam header also comprising a body portion extending horizontally and transversely of said smoke box, a plurality of branches communicating therewith, all of said branches and headers being rigidly-and permanently connected to form a unitary structure, said branches extending between said body portions at substantial right angles thereto, and beingdisposed in spaced, parallel relation, and superheater tubes having their ends communicating with the branches of the respective headers.

25. In a superheater for locomotive boilers, the combination with the usual smoke box, of a horizontally arranged saturate steam header located in the upper part thereof, a plurality of branches depending vertically from said header, superheater tubes having one end connected with said branches, a superheated steam header disposed below the first header, and parallel therewith, a plurality of branches upstanding from said second header, the other ends of said superheater tubes bing connected with said upstanding branches, all the branches of both headers being dis osed in parallel spaced relation, and the ranches of one header being arranged directly behind those of the other, in substantial alinement, longitudinally of the smoke box.

26. In combination with a locomotive boiler, a plurality of enlarged flues extending therethrough and terminating in the usual tube sheet, superheater tubes arranged within said lines, a steam header structure to which said tubes are connected disposed in front of said tubesheet, said header structure comprising a. horizontally disposed portion extending pa 'allel with said tube sheet, a casing for said header structure and associated parts comprising a substantially vertical front wall in engagement with said header structure, and extending from thence upwardly and laterally to the boiler shell, and a floor extending from the bottom edge of said front wall baclnvardly to the tube sheet, said floor being formed, in part, of a pivoted damper, means for normally maintaining said damper closed, and means for automatically opening said damper when steam is admitted "to the engine cylinders.

27. In combination with a locomotive boiler, enlarged fines extending therethrough, and terminating in the usual tube sheet, superheatcr tubes arranged within said lines, a steam header structure with which said tubes connect, disposed in front of said sheet, and a casing inelosing said header structure and tube ends, and comprising a substantially vertical front wall extending from the top of said boiler shell to a point below said enlarged lines, said front wall comprising detachably connected sections.

28. In combination with a locomotive boiler, enlarged flues extending there through, and terminating in the usual tube sheet, superheater tubes arranged within said fines, a steam header structure with which said tubes connect disposed in front of said sheet, and having a portion thereof extending horizontally and transversely of the boiler, and a casing inclosing said header structure and tube ends, and comprising a substantially vertical front wall extending from the top of said boiler shell to a point below said enlarged fines, said :lrontwall being made up of a plurality of sections, some of said sections being supported by the horizontally extending portion of the header structure and being detachably secured in place by means of clips.

2!). In a superheater for locomotive boilers, the combination with the usual tube sheet, of vertical rows of enlarged fines terminating in. said sheet, saturate and superheated steam headers having straight, eiongated, vertically extending portions disposed in front of said tube sheet and parallel therewith and located between said vertical rows of enlarged fines, and superheater tubes arranged in said fines, and having their ends connected with the lateral side faces of such vertically extending portions of said headers.

30. In a superheater for locomotive boil.- ers, the combination with the usual front tube sheet, of vertical rows of enlarged fire tubes set therein, a header structure mounted adjacent said tube sheet and comprising straight vertically extending saturate and superheated steam compartments, disposed one directly behind the other in substantial alinement, said alined compartments being located between said rows of tubes, and being rigidly united, but spaced apart, and superheater tubes lying within said enlarged fire tubes, and having their ends connected with the sidcsof the respective compartments.

31. The combination in a boiler having a smoke box and tubes, of a superheater having a header made in a single piece and con sisting of a series of columns spaced apart and connected to manifolds at the top and bottom, with super-heating. pipes arranged to extend into the tubes of the boiler, and a head at the outer end of each pipe, with means for attaching the heads to the header within the space between the two columns.

The combination in a boiler having a smoke box and flue tubes, of a superheater having a header made in single piece and located in. the smoke box, and a series of circulating pipes extending into the flue tubes, the header having through passages in which the pipes are mounted so that the said pipes can be removed from the tubes of the boiler through the header.

The combination in a locomotive boiler having a tube sheet and horizontal flue tubes and also having a smoke box section, with a superheater having a header located within the smoke box in front of the sheet, and having through passages, circulating pipes extending into the flue tubes and having heads located in the through passages and connected laterally with the header, with means for coupling the heads of the circulating pipes to the header, said means being accessible through the passages in the header.

34. In a superheater for locomotive boilcrs, the combination with the usual tube sheet, and fines terminating in said sheet, of a superheater comprising saturate and superheated steam compartments, each of said compartments being in the form of a straight hollow column, said columns being vertically disposed parallel with the tube sheet and with each other, and superheater 'tubes arranged. within said fines and having their ends respectively connected with the lateral side faces of said vertically extending columns.

' In a superheater for locomotive boilers, the combination with the usual tube sheet, and fines terminating in said sheet, of .e superheatercomprising saturate and superheated steam compartments, each of said compartments being in the form of a straight, hollow column, extending vertically in front of the tube sheet and parallel therewitli,'one of said columns being located directly behind the other, in substantial alinement, longitudinally of the boiler, and superheater tubes arranged within said fines and having their ends respectively connected with the said vertically extending columns.

36. In a superheater for locomotive boil- .ers, the combination with the usual tube sheet, and fines terminating in said sheet, of a .superheater comprising saturate and superheated steam compartments, each of said compartments being in the form of a straight, hollow column extending vertically in front of the tube sheet and parallel therewith, one of said columns being located directly behind the other, in substantial alinement, longitudinally of the boiler, and superheatertubes arranged within said fines and having their ends respectively connected with the lateral side faces of said vertically extending columns.

37. In a superheater for locomotive boilers, the combination with the usual tube sheet, and fluesv terminating in said sheet, of a superhez'iter comprising saturate and superheated steam compartments, each of said compartments being in the form of a straight, hollow column extending vertically in front of the tube sheet and parallel therewith, one of said columns being located directly behind the other, in substantial alinement, longitudinally of the boiler, and superheater tubes arranged within said fines and having their ends respectively connected with the lateral flat side faces of said vertically extending columns, such faces lying in the same plane.

38. In a superheater for locomotive boil ers, the combination with the usual smoke box, of a superheater comprising straight elongated, vertically extending saturate and superheated steam compartments in the form of hollow columns, a pair of such columns being located on each side of the center of the smoke box, and the members of each pair being disposed one directly behind the other, in substantial alinement, longitudinally oi the boiler, and superheater tubes having their ends respectively connected. with the lateral side faces of each pair of such vertically extending columns.

39. In a super-heater for locomotive boilers, the combination with the usual smoke box and tube sheet, and vertical rows of dues tending steam compartments, a pair of such compartments being located at each side of the center of the smoke box, and the mom bers of each pair being disposed one directly behind the other, in front of said tube sheet, and between two vertically extending rows of lines, one member of each pair being connected with the dry pipe of the boiler, and the othermember of each pair being adapted for connection with one of the engine cylinders, and superheater tubes arranged within said fines on each side of each pair of said vertically extending compartments, and having their ends respectively connected with the lateral side faces thereof.

40. In a superheatenfor locomotive boil ers, the combination with the usual boiler shell and tube sheet, forming a smoke box, and fines terminating in said tube sheet, of a header structure located in said smoke box and lying wholly within said boiler shell, said structure comprising a comparatively thin, flat, vertically extending portion disposed edgewise on each side of the center of the smoke-box, and having a flat lateral face lying in a plane at right angles to the tube sheet, and super-heater tubes arranged with ,in said fines and having their ends connected with such lateral side faces ofsaid header structure.

-11. In a superheater for locomotive boilers. the combination with the usual dry-pipe and tube sheet, and lines terminating in said sheet, of a superheater comprising saturate and superheated steam header members, each of said members being in the form of a straight, hollow column, said columns be-v ing vertically disposed, parallel with the tube sheet, and with each other, some of said columns being closed at the lower end and connected at the upper end with said dry pipe, and others of said columns being closed at their upper ends and adapted,to have their lower ends connected with the engine cylinilers, and superheater tubes arranged within said lines and having theirends respectively connected with the lateral side faces of said vertically extending columns.

In testimony whereof I allix my signature, in presence of two witnesses.

JULIUS KlNI? it 5-5. "I ATER,

\Vitncsscs:

ll. (1. Rosana, Is.\.\o HELD.

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