US1138061A - Locomotive-boiler furnace. - Google Patents

Description

F. F. GAINES.

LOCOMOTIVE BOILER FURNACE.

H APPUCATION mm JULY 2-1 29:3. 1,138,fi1, Rammed May 4, 1.91.

2. SHHLFS SHEET I- UNITED s'rA'rEs PA N, it

FREDERICK F. GAINES, OF SAVANNAH. G-ECR MENTS, TO AMERICAN ARCH COMZAIJY.

DELAWARE.

LOCOMOTIVE-QQI...

To all whom it may concern Be it known that I, FREDERICK F. Grimes, a citizen of the United States, and a resident of Savannah, in the county of Chatham and State of Georgia, have invented certain new and useful Improvements in Locomotive- Boiler Furnaces, of which the following is a specification.

My invention relates to improvements in locomotive boilers, and has particular reference to improvements in fireboxes or fornaees for locomotive boilers.

The object of my invention is to provide 7 a firebox construction whereby the efficiency erative condition an indefinitely longtime.

Further objects of my invention will appear hereinafter.

My invention consists of a locomotive boiler firebox, in combination with a refractory cross wall arranged in the forward part thereof, a ,bridge member extending across t'h firebox and supportedthereby havinga shelf or ledge upon which the Wall rests and is supported, and having an integrally formed buck stay plate extending upwardly over the forward face of the wall and to which the wall is secured.

My invention further consists in a firebox having a cross Wall arranged in its forward part rising from substantially the level of the grate, and a transverse bridge member spanning the firebox and supported thereby, said bridge member consisting of an integrally formed wall shelf and buck stay plate adapted to hold the wall and to-retain it in position.

' My invention further consists in a support for cross walls in locomotive fireboxes, said support having a Wall shelf portion and the line .l integrally cing said sup- .wboz.

or consists in locoiirov ed with a trans a wall 1'! formed. a port in My i motive be; in fi 11 verso i'ei'rartor: said all n; conduits. a retaining; .3; wall in ,or admitting doing the HPHHYUTS C1211. iii" rear ed air intrin the several one of parts. isfrr *t" n. by which ed, and icuierly and in the f the above on. all as here pointed 0 1i 1 My invent stood by row; drawiiiigs. twining :i

tion. and in Figure 1. section a cross wail Fig. 2. a with firebox on tilt ll seoiii n. taken end Pig. 7 is a 1 wing another on the View semi slight 111:3. my inven on. The f a well reboxes to prevent o flow of the gases of con'ibiistioi': Tl e to fines, thus retaining the in the firebox a sufiicient time to per! coan'giletion of the combustion the fuel before the gases escape through the lines, and causing the gases to circulate throughout the firebox, thereby efliciently imparting the heat thereof to the water the boiler.

Cross ordinari y built are expensive to .13 and e" a e ensive maintain for by reason 0 the extremely high temperature in w. they are ed, and the severe shaking vihration and jarring to which they are subjected in use they soon disintegrate and fall to pieces By means of my invention I am enabled to produce cross walls in fireboxes which retain the advantageous features above noted and which substantially eliminate the defects which have appeared to be inherent heretofore in such walls.

A locomotive boiler firebox A, as illustrated in the drawings, consists of a flue sheet a at the forward end, a rear sheet a a crown sheet a and side sheets a. Flues a lead forward from the flue sheet, and the rear sheet is provided with a fuel door or opening a. The firebox is provided with a grate a of usual construction. I provide a refractory cross wall B arranged in the forward end of the firebox spaced rearwardly from the flue sheet and forming between the wall and the flue sheet an auxiltact with the wall-retaining plate lower row of bricks rests directly iary combustion chamber a*. The wall does not extend to the crown sheet, but connecting passage (4 is provided between the top of the wall and the crown sheet through which the gases of combustion. flow from the main combustion chamber a to the auxiliary combustion chamber a". For supporting the wall in position I provide a transversely arranged wall support C. This wall support consists of a wall shelf 0' arranged beneath the wall and extending from side to side in the firebox, an integrally formed wall-retaining plate 0 rising from the for- Ward edge of the shelf in contact with the forward face of the wall, and also extend ing substan 'ally from side sheet to side sheet. At t e endsof the shelf I provide downwardly extending plates or brackets .0 adapted to be bolted to the side walls of the firebox by means of bolts 0 I also provide a downwardly extending flange 0* joined to the rear Iedge of the shelf, andlextending across the firebox. This flange or plate 0" serves to strengthen the shelf and I extend its lower edge below the lower edge of the firebomrausing it to serve to direct air into and through conduits provided in the wall. I further provide the bridge member C- with a depending flange, or plate (i joined to the forward edge of the shelf, and adapted to form part of the floor of the auxiliary conibustion chamber. For the purpose of strengthening the wall-retaining plate a I provide it with integral vertically extending ribs 5 merging at their lower ends into the depending wall (it wail of several transverse rows b of bricks b arranging them in the fOITx'l of a vertical wall, the forward face of which is in con T he upon the shelf 0 and for the purpose of retaining this lower or first row in raisition. I pro vide, upon the rear edge of the shelf, an

I preferably build the upwardly extending llange or ledge c which contacts with the rear face of the lower row of bricks and holds it upon the shelf. I ;-referibiy form the several bricks with ventral projections 6 upon their upper sur faces and with complementary grooves or openings b on their lower surfaces, whereby the several rows of bricks are interlocked together. For the purpose of retaining the w all in position against the plate 0 I provide a row of cap bricks Z formed to overlap the upper edge of the wall and provided on their rear edges with depending flanges I) adapted to overlap the upper edge of the wall and on their front edges with similar depending portions 7) adapted to engage the forward face of the plate 0 These cap bricks thus formed serve to interlock the upper end of the wall with the upper end of the retaining plate and thereby re.- tain the wall in position. this interlocking of the cap bricks with the wall and plate, I sometimes secure the bricks of the top row of the wall to the upper part of the plate by means of bolts b". As thus described the wall serves the function of preventing a direct flow of the gases of combustion from the fuel bed to the fines and the gases of combustion are thereby retained in the firebox longer than they would be held therein if they were allowed to How directly from the fuel bed to the flues. The wall as constructed and maintained is substantially permanent, being held against disintegration by means of the integrally formed shelf and retaining plate. As a further feature, I provide the wall with vertically extending air conduits or passages b which extend from the lower edge thereof and are adapted to admit air to the firebox from the upper part of the wall through its rear face and beneath the overhanging portion of the cap bricks 7). several of these passages so that the air-, is admitted to the firebox in a plane extending substantially across the box and servin to add air to the of combustion as t'ey rise from the fuel bed and to thereby effect the substantially perfect oxidation of the fuel. Forthe purpose of admitting air into the conduits I provide the shelf 0 with air inlet openings 0 one for each conduit and the depending flange or plate a serves to force air upwardly through said openings,

and into and through said conduits when the locomotive is running forward. For the purpose of completing the floor of the lower end of the auxiliary combustion chairibei I provide a horizontal plate 0 which is fbiiled at its rear edge to the forward edge of the depending plate 0 to the forward water leg of the boiler. This plate extends from side to side of the firebox and closes the lower end of the auxiliar combustion chamber.

In addition to i and at its .forward edge I provide As the gases of combustion enter the auxiliary combustion chamber through the contracted )assage a they expand and their speed is r need, and consequently they are forced to deposit any burden of unburned fuel or cinders which they may be carrying. These cinders collect in the lower part of the auxiliary combustion chamber, and for the purpose of conveniently removing these cinders I provide the middle portion of the floor of the auxiliary combustion chamber with a cinder hopper or outlet D provided with a cover al which normally closes the lower end of the hopper D and prevents the entrance of air at this point. For the purpose of causin the accumulating cinder-s to flow into the 0 per, I provide the lower end of the com ustion chamber with inclined walls d extending from the hopper to the sides of the firebox, preferably filling in the corners of the lower part of the auxiliary combustion chamber with refractorIv material to provide these inclined walls.

nstead of extending the wall retaining plate continuously from side to side of the firebox, I sometimes divide it into a series of verticall extending portions 0 by means of vertically extending slots or cracks c. I preferably extend the slots or the divisions between the portions 0 from the upper edge of the plate downwardly to the shelf a. This formation permits the several sections to accommodate themselves to differences of temperature without producing undue stralns in the plate as a whole.

In Figs. 4, 5 and 6 I have illustrated a wall support Ewhich is constructed from a number of vertical sections 6. Each section is a single integral piece and includes a portion 6 of the shelf upon which the wall rests, a portion c forming a part of the wall retaining plate, a portion e forming a part of the depending air directing flange and a portion 6 forming a part of the floor of the auxiliary combustion chamber 1/". I providithese sections on their adjacent edges with flanges c by means of which the srctions can be bolted together to form a continuous wall supporting or bridge member, the end sections of the series having formed into grallv therewith brackets c by incans of which the bridge as a whole is adapted to be secured to the sides of the fire box by means of bolts c". This construction of the bridge member provides a bridge, the indt vidual parts of which can be readily handled and placed in position and the individual parts being secured together by means of bolts 6 in the flanges e. They are more or less flexible and can accommodate themselves to changes of dimensions due to changes of temperature or other causes without producing breaking strains in the bridge member as a whole. The several sections of this form of bridge plate are adaptetd to be secured to the wall in the manner described in reference to the preferred form of my invention and. each of the sections is provided with a vertically extending brace or rib c, and with a rib at the rear edge of the shelf portion which serves to retain the lower row of the bricks of the wall upon the shelf.

In Fig. 7 I have illustrattei'l a modified means of retaining the n all in position against the retaining plate. In this instance I provide the plate with vertically extending T-ribs 0 on its rear face adapted to cooperate with similarly formed grooves b in the bricks, the plate and the bricks being adapted to be thereby interlocked together and the bricks thereby retained in position against the plate.

As many modifications of my invention will readily suggest themselves to one skilled in the art I do not limit or confine my invention to the specific structures herein shown and described.

I claim:

1. In a locomotive boiler firebox a vertically arranged cross Wall in the forwa rd end thereof extending from side to side and ris; ing from substantially the level of the grate, a metallic wall supporting member extending from side to side, supported by the firebox and retaining the wall in position, said member comprising a horizontal shelf upon which the wall rests and an integral vertically extending wall retaining plate in contact with the formed face of the wall and substantially co-extensive therewith and cap bricks forming the upper edge of the of the wall and the upper part of the wall retaining plate and means for retaining the lower part of the wall in position on the shelf.

In a locomotive boiler firebox a retractory cross wall in the forward end thereof rising from substantially the level of the grate and composed of a plurality of horizontal rows of refractory bricks, a metallic bridge member retaining the wall in posh liull, extending from side to side of the tirebox and supported thereby, said member ronnirising a wall receiving shelf and a \crtically extending wall retaining plat. the shelf and the plate being formed integrally with each other, said plate being in contact. with the forward face of the wall and substantially (-o-cxicnsive therewith and refractory cap bricks forming the upper edge of the wall and provided with depending forward ends ovt-rla iping the upper edge of the plate, and depending rear ends orerlap nng the upper edge of the wall whereby the wall and plate are bound together and a vertically extending rib or ledge on the rear edge of the shelf adapted to retain the lower part of the Wall on the shelf, the several rows of bricks being provided with interlocking tongues and grooves whereby the intermediate rows of bricks are retained in position.

3. In a locomotive boiler fire box a transverse refractory wall arranged in the forward end thereof and extending from side to side, a metallic bridge member support in the wall in position and comprising a will shelf and a wall retaining plate integrally formed together, means for securing said member to the sides of the fire box, the wall having vertically extending air conduits adapted to admit air into the fire box abore the grate. the shelf being provided with openings registering with said air conduits and a depending flange or plate on the rear edge of the shelf of a size to extend below the lower end of the fire box and adapted to direct air into said openings.

4. In a locomotive boiler fire box a refrae tory cross Wall arranged in the forward end thereof extending from side to side, a metallic bridge member retaining said Wall in position and provided with a horizontal shelf and a vertically extending plate formed integrally with the shelf and adapted to contact with the forward face of the wall, means for holding the wall in position -bn said bridge member, a vertically arranged depending plate at the rear edge of the shelf closing the forward end of the grate space of the fire box and a forwardly inclined depending plate at the forward edge of the shelf, said depending plates, shelf and vertically extending wall. retaining plate being integrally formed, means for closing the space between the forward edge of the inclined plate and the forward end of the fire box and a normally closed cinder outlet arranged between the wall and tie flue sheet through which cinders may be withdrawn from the firebox.

5. In a locomotive boiler fire box a rcfrac tory cross wall arranged in the forward end thereof extending from side to side and composed of a plurality of bricks arranged in horizontal'rows, a metallic wall support spanning the firebox and supported thereby, said support comprising a horizontally extending wall shelf arranged beneath the wall and a buck stay plate formed integrally therewith extending upwardly from the shelf in contact with the forward face of the wall, integral means for retaining the lower rows of bricks upon the shelf and cap bricks interlocking the upper row of bricks with the upper edge of the plate per-- tion, the intermediate rows of bricks being interlocked with the lower and upper rows and thereby retained n position.

6. In a locomotive boiler fire box a refractory cross wall arranged in the forward end thereof extending from side to side and composed of a plurality of bricks arranged in horizontal rows, a metallic wall support spanning the firebox and supported thereby, said support comprising a horizontally extending wall shelf arranged beneath the Wall and a buck stay plate formed integrally therewith extending upwardly from the shelf in contact with the forward face of the wall, integral means for retaining the lower row of bricks upon the shelf and means for securing the upper row of bricks to the upper edge of the plate portion, the intermediate rows of bricks being interlocked with the lower and upper rows and thereby retained in position, said wall being provided with vertically extending air conduits adapted to admit air to the tire box adjacent to the upper edge of the well, said shelf being provided with air in :r opeuin registering with the lower ends of the said conduits and admitting air thereto and an integral vertically mgr- 1 flange or plate depending from t1 -iielt' to the rear of said openings and adapt-ad to direct air into and through l opcni J .hen fhe locomotive in forward in: ion.

7. In a locomotive hoiier tory cross wall arranged end thereof extending fr e to side and rising from the grate l My a metallic bridge member retaining the ii all in position and comprising a shelf upon which the wail rests and a ierti-gsily extending plate substantially coextensive with the wall and reatl'iing to the upper part thereof and a row of cap bricks on'thc upper edge of the wal' having lotiions deprndirn in contact with the forward fare of the p ate and with the rear of the wall whereby the upper edge of e we x a refracz'no forward i and the upper edge of the e are hound together.

In a. iocmotivc boiler. firebox a refractory cr' s wail arranged in the forward end thereof exten licg from side to side and rising from grate surface, a metallic bridge member retaining the wall in position and comprisin r shelf upon which the wall rests and. a vertirally extending plate substantially (in-extensive with the wall and reaching to the upper part thereof and a row of cap bricks on the upper edge of the wall having portions depending in contact with the forward i'aco of the plate and with the rum face of the wall whereby the u per edge of the wall and the upper edge 0 the plat are bound together wall being provided with a plural ty of verti ally arranged i'ir in ct endi itsi extending from the lower part ihereof and opening through tin rear fair below said moi-lapping cap bricks and said shelf be ng provided with regisi ing openings through which air is admitt d to said conduits.

9 In l-zjcomotive boiler fire box a refractory cross wall arranged in. the forward end thereof extending from side to sideand ri ing substantially from the have of (the he, a metallic bridge member retaining the wall in position and comprising a shelf upon which the wall rests and a veriieall extend-- ing plate substantially (Jo-extensive \"ithmhe wall and reaching to the upper par: tiiereu'f, and a row of cap bricks on the Wall nverlap ping the upper edge of said plate, and

vain this cap hiicks upon zhe I a and ii the pur ose specified.

" my whereo 1 ha. ve hermmts sa tnf 31131-2), EH3, in i m: Him-asses.

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