US1138050A - Locomotive-boiler furnace. - Google Patents

Description

CHARLES B. MOORE, 0F ,F.VANSTON. ni-MOIS, ASE-IGNQR, BY 'ME-SNE ASSIGNMENTS,

T0 AMERICAN ARCH CQMPANY, OF NEW YDBK, N. Y., A CORPCRAT'ION 0F DELA- WARE.

iocouorrvn-Boirnn renuncia.

Specification of Letters Patent.

Patented May 4, 1915.

To allw'hom it may concern 'Be it known that I, CHARLES B. MOORE, a citizen of the United States, and resident ot the cityA of Evanston7 county of Cook, and State of Illinois, have invented certain new und useful Improvements in Locomotiveioiler Furnaces, of which the following is :i specification.

Mv invention relates to improvements in locomotive furnaces and has articular reference to improvements in refractory deilecting. walls or battles otherwise known as arches for the fireboxes of locomotives.

The general objects of my invention are to provide a. refractory arch which canbe easily and quickly installed yin a locomotive iirebox without the necessity'of any preparatory work being done on the box; to pio vide an arch which shall be of Alight weight and low cost; to provide an arch which shall be easy `to repair and parts of which can be readily removed to afford easy access to ire box sides and to the flue sheet for necessary repairs thereto; and to provide an arch of a form that shall materially assist in the admixing of the rebox gases. h

A special object of my invention is to provide an arch of the character here outlined which shall be particularly adapted for in` stallation in locomotive boilers which are equipped with one or more inclined circulating tubes.

My invention consists in various novel constructions and arrangements and combinations of parts by which the above objects are attained, together with others hereinafter appearing, and all as fully described `with reference to the accompanying drawings and as particularly pointed out in the appended claims.

In said drawings, which forni a part of this specification, I have illustrated a prefoi-red form of my invention and have illustrated its application to locomotive fireboxes having various arrangements of circulating tubes.

Figure l of said drawings is a central longitudinal sectional view of a. locomotive fireboX equipped with a refractory arch the whole embodying my invention; Fig. 2 isa horizontal sectional view of the irebox showing a top plan view of the arch and taken on line.2-'2 of Fig. 1; Fig. 3 is a transverse sectional View of the ireboX on the line 3 3 of Fig. l and'showing a rear. handled and placed in position with ease 110 circulatin end elevation of the arch; Fig. 4 is a transn verse sectional view of the arch on the line 4 4 of Fig. l; Figs. 5, 6 and 7 are views similar to Fig. 4 but showing the inven-A tion as applied' to fireboxes having diiferent arrangements of circulating tubes; Fig. 8 is an enlarged fragmentary end elevation of the arch more clearly illustrating the interlocking joint between the panel bricks and the supporting bricks; and Fig. 9 is a view in perspective of one of the interlocking panel bricks. i

My invention is capable of embodiment in arches occupying various positions in the iirebox and having different specific functions and, although have conlined the illu'stration of the invention'to iso-called front arches, it should at once bel understood that my inventionis not thus. limited. A socalled front arch usually occupies an iiiclined position in the Firebox extending from side to side ther n z' .d having its forward end in abutment with or arranged close to the iue sheet. The V rincipal function'of 'these arches is to de ect the tirebox gases out of their.direct line of flow from the grate to the flues and not only cause them' to travel back and forth in the irebox and thereby distribute their heat to the whole 'interior surface of the firebox but also to retain them in the firebox a suiicicnt time 'to permit complete combustion to take place before the gases escape ythrough the fines.

A locomotive boiler irebox, as illustrated in the drawings, is made up of a flue sheet 2, side sheets 3, 3, a. crown sheet 4 and a rear sheet 5. The tlrebox has af grate 6 and therear sheet is provided with a fuel door or opening 7. Flues 8 lead forward lfrom the flue sheet. The iirebox illustrated in Figs. 1 to 4 is provided `Jvjitli two inclined water tubes extending from the lower portion o the flue sheet to the upper portion of the rear sheet and serving Yto increase the circulation of water betwe` tl? Jiront and rear water legs of the boiler A particular featureof iL invent-ion resides in an arch which is mace up of a nuinber of individual bricks of several diiierent shapes and formed to be supported upon and by the circulating tubes and the side sheets of the irebOX. These individual briclrsare limited in size by the features .that they shall not be too heavy .to lb@- and that they should be small enough to be readily passed through the fire door.

The arches which I have illustrated in the drawings are built of two forms ofbricks, t'. e., supporting bricks which rest upon and span the tubes, and cover or panel bricks which space the supporting vbricksipart and substantially close the openings; between them. arrange the supporting bi'icks A in transverse rows or lines across the firebox suitably' spaced apart to receive and support the panel bricks rl`he dimensions of the supporting bricks are determined by the spacing of the tubes in the tirebox. lVhere the spaces to be spanned are comparatively wide, I use two of the bricks placing them together in the form of an inverted V and thus forming a seltsupporting span or arch. The length of these bricks being determined bythe spacing of the tubes, their cross-sectional area or their weight is determined by the features above mentioned, that is, that they shall be light enough to be readily handled and small` enough to be passed into the lireboX through the fuel door. l preferably forni the supporting 'bricks substantially square in cross section, that is, making them as deep as they are wide and they are thereby given a sullicient bearing'upon the tubes so that when once placed in position they rest securely without rocking on the tubes. I providethe lower ends oi' these bricks with sockets or grooves A', substantially fitting the curvature of the tubes and adding to the stability ol the l 'icks ,when once in position.

In the preferred form of my invention I use four of 'the vsupporting bricks in each row or line, each of the outer bricks resti-ng at its inner end upon atube and inclining upwardly and outwardly -against one of the side sheets of the firebox and the middle two bricks of tlferow resting upon the tubes and virtually abutting each other substantially midway between the tubes. ,I interlock the adjacent bricks together in each row of the supporting bricks to prevent any possibility of their being separated through the jarriny ell'oct of the locomotive when running. While l might make use of separate or additional bricks for the purpose of locking the supporting bricks together, I prefer to form the panel bricks Bin such a manner that they will perform the functions not only of holding the supporting bricks in their proper spaced relation and closing the openings between them, but will also perform the function of interlocking 'the supporting bricks in such a manner that the supporting bricks are held against relative movement and the arch, as. a whole, is securely retained in its proper .working condition.

The ends of the supporting bricks A are provided with ribs or hooks A2 which project upwardly and extend from side to side thereof and the panel or cover bricks l are provided with downwardly projecting lioolcs or ribs B1 on their ends spaced apart a sailicient distance to span the hooks fil en the abutting ends of adjacent supporting bricks. As shown in the drawings, l place one olf the panel bricks l spanning each pair of the abutting ends ot' the supporting bricks and l proportion the width ot' the bricks l), so that a single brick substantially sills the space between the locking 'panel bricks and thereby the arch is completed. l preferably form the. bricks l with projecting end portions 132 adapted to rest upon the upper surv face of the supporting bricks and thereby hold the panel bricks in position. It will non' be noted that regardless of the `shape of the individual bricks, thearch as a 'wholev presents many angularly disposed surfaces and gasmixing pocsketfs or cavities whereby the ellect of the arch in av'lmixing .the is greatly enhanced. l add to this function of the arch by providing the undersides of the supporting bricks n ith gas-1nif;ingpock ets A which extend substantially the length and width of the brick and thereby not only lighten the individual bricks but also provide them with comparatively thin (lopendingr flanges A4. These langes, being comparatively thin, quickly attain to the'xnaxi nunn temperature ol' the tirebox and therebyr assist in the ignition ot' the fuel particles and gases. l provide eachof the panel bricks l with a depending portion Bf: which projects below the upper surfaces of the 4supporting bricks and provides the brick with end walls or surfaces l5* adapted to contact 'with the sides ot',tl1e supporting bricks and thereby hold 'the supporting bricks properly spaced. rl`hese depending portionsare provided with gas-mixing pockets 15" which not only' lighten, the brick, but

provide the' arch with additional sul'isit'liary gas-mixing or connningling pockets or cavities B.

In building my arches I pla a row or line of the supporting bricks in position resting them 11pm-`tlie tube.L ud against the flue sheet, the end bricks of the rovv being piaf-el upon tbe tubes and leaning against the. side sheets. l then place a second line or ron' of the supporting bricks above and parallel with the first row and hold this second row in position by placing one of the cover or panel bricks upon and between each of the corresponding joints .in the tvvo rows of supporting bricks. ',l`hese panel bricks thus plat-ed retain the two rows of supporting bricks securely in their positions as the panel lu'icks interlock the adjacent bricks oli each row together and the arch being arranged in an inclined position, the weight ol' the bricks holds the arch donn against the flue sheet. I complete this part of the arch by placing additional panel bricks between those already placed and thus completely close the openin s between the spans of sup orting bricks. n some-instances am arch mined of two` rows of supporting bricks and one of panel bricks would be Vsufficiently high, but usually it is desired which certain portions may be readily removed without disturbing the arch as a whole when it is necessary to repair the side sheets or liuesheet of the firebox. My arch being composed of individual bricks of a size which are easy to handleis one which can be placed in position with a minimum expenditure of time and lalbor. Another feature which is inherent in my novel form of arch is that the arch as a whole does not become a rigid mass after the manner .of the ordinary arch, for the reason that the overlapped joints between the various members of the arch do not become cemented tog 3;etherl by the slag which forms upon the surfaces of the arch. The arch, therefore, is. in a sense AFlexible, in that it can adjust itself to slight changes of dimensions of the lire-box without destructive disintegration.

In Fig. I have illustrated an installa tion of an arch embodying my invention, in a comparatively wide irebox which is equipped with a single circulating tube. In

this instance the space between' the tube 'and thc side sheet being too great for the span of a single brick, I arrange two of the support-v ing bricks in this space forming an inverted V shaped arch after the manner of the middle portion of thearch, as shown in Fig. 2, and I provide inwardly projecting studs 1l on the side sheets 3 for supporting the outer ends of the ans.

Inl Fig. 6 I have illustrated an installation of the arch in a comparatively narrow firebox which is provided or equipped with a f single circulating tube. Here the space be tween the tube and side sheet is not too great 'to be spanned by a single, brick and' I i therefore arrange a single supporting brick in this space after the manner of the side or end portions of the spans illustratedin-Iiig. The supporting bricks in thiscase are arranged in upwardly vand outwardly inclined positions' wedgingly engaging the tube and the side sheets.

Fig. 7 illustrates an installation of the stallation in lireboxes havin rangements of water circulating tubes and arch in a rebo'x having' three-circulating tubes, the outer ones of which are at a l higher elevation than the center tube. The weight of the arch in this form is, carried that it is one which when once installed remains permanently in position regardless of the destructive jarring effect of the locomotive, when running. I

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A locomotive boilerY firebox i. wing a plurality of arch tubes, in combination with a refractory arch body resting on' said tubes, said body comprising spans which extend between and rest on said tubes, said spans being disposed in spaced apart rows and panel,

bricks which rest upon two adjacent spans' and interlock the two adjacent bricks of' each of the two spaces which they engage.

A locomotive boiler lircboX having, a plurality of inclined arch tubes, in combination with a refractory arch body resting upon said tubes, said body comprising a plurality of transverse rows of refractory span bricks spaced apart on said tubes, said bricks being also arranged in longitudinalr rows in the lireboxland panelor cover` bricks resting upon adjacent transverse rows of span bricks and overlapping at each end two span bricksand formed to interlock therewith and prevent relative lateral movement of the span bricks. l

3. A. locomotive boiler fireboX having a plurality of inclined arch tubes, in combination with transverse rows of span bricks supported by said tubes, and a plurality of arch panel or cover bricks in turn supported by said span bricks and certain of said panel bricks interlocking with the said Span bricks and preventing the lateral Vseparation of adjacent span bricksl l l 4.' A locomotive boiler iirebox having a plurality of arch tubes, in combination with a plurality of transverse row's of bricks spaced apart upon and extending between said arch tubes, and a plurality of arch top forming bricks, through the medium of said transverse bricks being also supported by said arch tubes, said top forming bricks closing the spaces between said transverse bricks and having transverse shoulders on their undersides which serve as stops and spacers for' said transverse bricks and cervso sis

tain parts thereof seri'ing to fnterlock the adjacent bricks in said transverse rows and hold them against separation. L

5. A locomotive boiler tirebox containing a plurality oi inclined arch tubes in combination with two or more rows of refractory span bricks spaced apart upon said tubes and abutting the sides of the irebox, and a plurality of refractory slabs or bricks in the spaces between said rows of span bricks spacing them apart and serving to bind the adjacent .bricks in said rows together and `ating them from separating.

5 2. ,Ik locomotive boiler firebox containing a plurality of inclined arch tubes, in combination with tworor more substantially idenn tical transverse rows Y of refractory span bricks abuttingl the sides of the rebox and longitudnallyfspaced apart upon said tubes, arch top or' panel bricks arranged between adjacent rows of span bricks and resting at each end upon adjacent-ends of the bricks inV said` rows, the ends Ioli-'said panel bricks and or' said s pan bricks being formed to interlock with each oth'er` and prevent the separation o/the span bricks in the lirebox.

'7. A locomotive boiler rebox containing a plurality of arch tubes, in combination with two or more transverse rows of refractory span bricks abutting the sides of the tirebox and spaced apart at different heights upon said tubes, and arch top or cover y bricks support-ed at the ends by adjacent bricks of adacent spans, the ends of said span bricks being formed to interlock with said cover bricks and be held thereby against separationn 8. In a locomotive boiler freboX having two inclined arch tubes, a refractory arch comprising a plurality of arch bricks in incenso clined. transversely of the iirebox, resting at ,their lower edges upon the tubes and abutting each other at their upper ends, the adjacent ends thereof being provided with longitudinal ribs, other bricks engaging said ribs and interlocking the rst mentioned bricks to prevent their separation transverseiy of the lirebox. 4

9. In a locomotive boiler tirebox, having a group of inclined arch tubes of less ,width than the firebox, a plurality/'of transverse rows of span bricks longitudinally spaced of the fire-box, each of said spans comprising a plurality ofvgroups of two bricks each, having their adjacent edges resting upon the tubes' and extending upwardly and out wardly from the tube, certain of the bricks abutting cach other and certain of the brick abutting the side sheets, transverse ribs along the upper outer edges of each said bricks, and cover bricks resting upon two adjacent spans in manner to hold the spans in spaced relation and having portions engagingthe ribs of the span bricks to interlock the span bricks against separation transversely of the firebox.

10. In a locomotive tire box arch the conibination ot' an inclined archtube with two refractory bricks each having an end rest- ..ing upon said tube and a third refractory brick interlocking the first two against separation upon said tube.'

In testimony whereof I have hereunto set my hand, this 5th day of December, i911, in the presence of two subscribing witnesses.

CHARLES B. MOORE lVitnesses: f EDWARD F. WILsoN,

CHARLES GILBERT HAwLnY.

Images