US1138042A - Locomotive-boiler furnace. - Google Patents

Description

C. B. MOOREr LJCOMUTWE BLER FURNASE. MPL10/mon HL'ED DEC. re, ma.

Pfltene' May 4, ,1915.

UNITED STATES PATENTl oEEIeE.

CHARLES B. Mo'oEE, oF EvANs'roN, ILLINoIS, AssIGNoR, BY MEsNE ASSIGNMENTS,

TO AMERICAN 'ARCH CQMPANY, WARE.

To all whom it may concern l Be it known that I, CHARLES B. Moonn, citiz'enof the United States,and a resident of thecity of Evanston, county of Cook, and State of'Illinois, have invented certain new and useful Improvements in Locomotive- Boiler-Furnaces, of which the following is a specification.'

"My invention relatesito improvements'in llocomotive boiler furnaces, and has special reference to. improvements inv refractory -baliies or Walls, commonly called arches, for

the ireboxes of locomotive boilers.

vThe general objects of my invention are to provide a refractory arch for Ainstalla-tion and fuse. in locomotive -boiler lireboxes, of comparatively,lightweight low cost ;to provide 'an arch particularly adapted for 1nstallation in locomotive furnaceshaving in-` clined arch Atubes and which shallgfind'its Asupport thereon; to provide anv arch con- 'struction which will readily adapt itselfto boilers of varying dimensions and arrangements of tubes; and parte of which can be readily removed to afford easyA access to Y the stay bolts;

sidesheets for the repairl of and to provide an arch which,l on account of Vitspeculiar construction and arrangement of parts, willmaterially I assist 1n the commingling and admixiug of the firebox gases, to the end that substantial'lyv perfect combustionwill be'1 attained in the firebox.

' A more `special object of my inventionis f to provide a refractory arch structure which,

while .flillingfthe above general objects,

will be especially radapted for installation V and use in` comparatively wide locomotive boilersiaiid especially in such boilers which' areequipped with ltwo inclined arch tubes which are comparatively widely separated.

M iuventionconsists in the assemblages of elements, *combinations* and lrelations of whereby the above objects are attained together withothers hereinafter appearing, and all as hereinafter fully describedwith reference toftheaccompanying drawings, which form a part of this specilication, andV particularlyr and definitely pointed out in theappended claims.

,. In said drau-'ings: Figure l is a central,

vertical longitudinal sectional view of alocomotivc lirebox equipped with an arch illustrating one embodiment of my invention ;"Fig. al fragmentary horizontal sectional view ofthe iirebox on the line 2-2A of Specification of Letters Patent.

LocoMoTIvEQEoI'LEn' EURNACE.

Patented May 4, 1915.

n Application filed December 18, 1911. Serial No. 666,350.

Fig. 1;'Fig. 3 is a tional viewn' the line is a detailjtransverse sectional 'view of the arch on' the` line 5,-5 of Fig. 3; Fig. v5 is a detailtransverse sectional viewof the arch ontheline 6-,6hof Fig.4 3. y

My invention is cap ble of embodiment in reffactory4 arches'of varinis details 'of construction and occupyingidi'erent positions in the lreb'x and, although `If have chosen to confine,.th/illustration of the'invention to so-called' front arches, jit'will be readily u`ndersto'dl that my l invention is 'not thus limited.4v`l n f So-kcall'ed fijont 'a'1'ch,e' s us'ua1ly occupy an inclined" pofsitio vat' the front; lend of the fireboX jelose/t or inh'contactjwith the flue sheet, a1d',`usuall V. extend from" side sheet to side, sheet,l an in.' `fireboxe'-s which are y equipped inclined 'circulating tubes find their Vsupport thereon. .The principal :funcj-j 3-3 of Fig. 1; Fig. 4.-

, tion ofthisfformfof archfis tol deflect the which 'embody my inventvonnot only have the above `:impor,tant ,'funetionljbut r.they are proferably lformed of :individual lbriclis which are`- so formed "ini semble'dl and related n t .5e arch-'fis "produced which diversely )arranged ach' other that an which .o m'aterially,v assist` yinv 'the thorough 4commin'gli*ng audzadmixingwof nthe frebok gases as' theyfql'rise- "through 'the iirebqx. These fvariousf defi'ecting' 4walls" and surfaces also ...asista-the.return 'tothe `fuel heey of the'kmore soli'dfuejl particles andcinders.-

ward end,a`rear, .Sheet Batits rearl end con- 'rnected'by side sheets4,4,`"and a crown sheet 5. -'grate' is'proyided attlie lower end of the firebox. Flues-7ylead forward from the flue 4slreetalnd .the rear sheet is provided with vertical transverse secthemselves and as? -As sli-own j'i'u l,the fdrawingsy a :locomotive vlxrcboXg-is formed offaffl'ue sheet `2 at `its. forlis-.p'rovided with j V a l y and positioned gas flectmgsurfaees' `rand ipo'cketfsw'or cavities two circulating or arch tubes 9. -As usual, these tubes extend from the lower portion. of the flue sheet upwardly and rearwardly to the rear sheet and assist in the circulation of water between the front and .rear legs oi'v the boiler. The tubes 9, as shown in the drawings, are arranged quite close to the side.

stay in-place regardless of the severe arring effect to which they are subjected.

In buildin iny arches I use two inaii forms of bric ts, limiting their sizes only by the necessary features that they shall not be too heavy in themselves for convenient handling, nor 'so large that they cannot be readily passed through the fuel. or fire door. These two forms of bricks coinprise the arch. or span bricks a and the cover or roof bricks t. The span bricks a are'adapted to be used in pairs tospan the space between the tubes and they are 'formed to rest firmly on the tubes at their lower ends and abut together at their upper ends. Each pairthus forms a span or arch 10 between the tubes and these bricks 'are formed to interlock at their abutting,` ends so that they are in a sense seltsupported arches.` These spanslO are spaced apart upon the tubes 9 and are held in spaced relation by means of the cover bricks 2') which lind their support upon the spans 10 and in a practical sense close the spaces between these spans. I complete the arch by closing the spaces between the tubes and the side sheets by means of bricks c somewhat similar-to the cover bricksb, but formed especially 'this purpose. .lt will be uiiderstood that the main part of the arch is in a sense complete in itself iorincd up as it is ot the spans l0 and. the cover bricks '6, and vthe side bricks cfinay or may not be 'used :is may be desirable in. the particular boiler in which the arch is installed..

' The span bricks a, two oit which form a span 10, are together longer than the space between the tubes and hence when placed in position` they occupy an inwardly and upwardly inclined position resting at their lower` ends upon the tubes and at their up per 'ends lagainst each other.v ends are provided with grooies or sockets (d adapted to be iii'iiily seated upon the tubes i) and their upper ends are provided` with interlocking tongues a2 and grooves of which,

, rest firmly receive the inner ends oi AThese bricks c are arranged n i an' upwardly r)"heiilower.

when the bricks are in position, prevent relaf' tive vertical movement of thc abutting ends of the bricks, and hence retain them in interlockedv con dition. l

It will beunderstood, of course, that the weight of' tliebi'icks holds them in their desired position. 'Ihese bricks a are' wide enough where they rest upon the tubes 9 to thereon without rockingl and l niake these bricks deep enough to gire them suilicient strength to carry their own weight and the weight of the siipei'posi-.d corei' bricks b. I further forni them with a ninnbcr ot gas dcflecting l, Afui-ther i'orni the bricks i with sidcs'to their desired strength. lower or outer ends oi the grooves or gains a' upon their upper inclined position resting :it their iiiici'y ends upon the lower or outer ends o'l thil bi'icksul and at their outer erds against the side sheets 4. These bricks if not only lill in the space between theI inaiii part o? the side sheets, but

he side bricks uw pockets or cavities' a" in their lower siii-faces which lighten the bricks.. to a certain extent without doti-acting il'i'oni arch and also :ict :is lockingihricks tov assist in the maintaining ol' .the arch against v,

lateral movement in the irebox :in d thus move some of the lateral strain ot the weight of the arch :t'ronrthe tubes. The bricks c are preferably formed with an inncrvtongue c which overlaps the lower joint between 4the' `two bricks. ,'lhcy .'pans l() are heldapart and the spaces between thcn'i are lillcd by vthev vcover or roof bricks I usually prefer to arrangi-A two o'l'j thecover bricks between correspoiuling span bricks, as

shown in F l to il. These bricks areal",

Aranged between the upper edges ot' the span end oi" the arch brick (L and assists in n'iakii'ig a gas tight collect thereon are not retained but are caused to slide down oil' oi' the arch and be returned to the fuel body upon the grate.

lt will be understood 'that the cover bricks i iis might be plain slabs or plates and. fulfil the function oi illing the spaces. between the span bricks iiioresecurcly hohl the spans in proper position. and for the pui-pose of providing the tops ol the spaces between .the spans with in pockets and i'ihn-aliiy of smaller.gaze-iniuii'ig dellerting siii-faces, l provide the lower sui-, faces oi' lhicoif'ei" bricks with longitudinally :ii-ranged ribs bgconnected at theirmiddle portion n'itlrtrausvcrse ribs IP.' The ends of thel ribsI are arranged toubiit thesides of lthe arch bricks and assistin maintaining them in position. This construction ol" the and spacing theinapart, but toizii 1 Y, assist inthe convenient or easy cover bricks provides them with a plurality of small gas-mixing pockets b in their under surfaces. It Will noted that regardless of the shape or form of the individual bricks of the arch the construction as herein outlined provides an arch `with gas-deflecting surfaces arranged at various angles and also with gas-mixing pockets or cavities, side or locking bricks '-c are provided -on their under side with cavities c2 similar to the cavities in the other bricks only lighten these bricks but assist in the admixing of the fire-box gases.. IV prefer t0 form the outer endsof the bricks c with narf ioW central projections ca which not only fitting ofthe arch tothe iireboX, in that the narrowy pro'- jections are more easily trimmed. orl broken than. the whole'width 4ofthe brick, but they also result in the sideisheets being protected to only a slight extent from the heated fire-v box gases.

The installation of =one of inyfarches rin the fireboxis acomparatively simple mab' ter. I first place a span composed o'fa pair of the span bricks a upon the lower ,ends of the tj bes 9 and space them from the lue Y u l n,

` Sheets'of the jrebox,.thejinner`ends ofthe iside/bricks vand the p by 'means of a spacing block lor brick d. This brick al is arrangedbetween the apexof the span andthe iue sheet;r It is formed upon its rear 'end to. interlock with the'bricks aand thus beheld from `fall-- ing, thev weight ofthe arch when completed holding-it-iirmly against the' flue' sheet. I next arrange-ay second span above the. first span, yupon the tubes, and lhold it in position by placing `the roof or cover'bricks' b between the spans.

bricks are deep 'enough/so that the lower cover bricks contact With the tubes 9 and this prevents the cover bricks from sliding down lout of'thcir proper lposition.' Should it be desirable, `further yspans and cover bricks may be `placed in position to build an arch ofthe desired length or height. Having,r thus formed the main part of. the arch I 3.

then place the side briekscinposition at the ends of the span bricks and between these I place furthei .side bricks resting their inner endsuipon theputeiv edges of the c lower cover bricks.. The tongue c.' of the side bricks rests upon the upper surfaces of the cover bricksiand thus holds theA inner ends of theside briclni4 in position.4 This form of arch, being spaced from the flue sheet'by the block d, providesopenings 11 A fstructedl and arranged asin cause the side it is usually necessary yto remove only the which not spans, eachitheieof composed o a, plurality 0f roof bricks The ribs b2 .on the cover and side bricks ytially .horizontal f and 'vertical tion to the Vspecific structures herein `shown and described. l i,4 Having thus described my invention, I

'claim as new and desire to secure by Letters Patent: y

1, A-.loc'omotive boiler fire box .equipped Withtvvo Widely separated inclined archsipportiiig tubes'i,ii combination with a refractory arch'supported by said tubes and y.held in' 'spaced relation froml the flue sheet,

said arch ,comprising a pluralit of `arched y I fY two bricks abutting substantially fnidway between the tubes arranged between the span brickss'paeing'them'apart and closingthe openings beti'iireen them, means preventing -lateralfnioveinciitf the roof bricks .en the vspanj'brcks, and comprising side brickssupportediat 'their 'inner en ds by vthe span bricksaiidgthe rooffbiicksand at their outerv Vends"` wedgingly engaging the .side

` y'outer edges of :the arch being formed tofpro'vide. 'coperating sub-` stantially'horizpntal and vertical faces,'as and for thepurpose specified.

vtheir ,outer edges against `respective side vsheets and,l atv V'their inner ledges upon the outer edges ofthel arch bo`dy, the outer edges of c thel arch' .body and the inne'i'edges of the refractory lcaves'pbeing formed With coperating substantially horizontal and vertical faces, as andy for the purpose specified.

A locomotive reboxV com rising in combination,A side'fivalls, loiigitufv ina'lly inclined circulation tubes between vsaid side Walls, and a vbaliie Wall on "saidftub'es comprising intermediate brick resting upon the circulation tubes,v and 'side brick inclined in position and having their outer ends restv2.) A -ipeqnotiyabaiierarebox in etmbinationfvvithtvvo inclined arch supporting tubes -therein arranged 'close toQrespectivel side and fwedgingly resting thereon, and l ing a'gaiiist'the side Walls, said intermediate being provi ded with lsubstan- K c coperating faces,'said.v faces being respectively so con* brick to bear downwardly upon the intermediate brick and `horizonta lv against the saine.

4:. A locomotive boiler fire .box and its side vsheets yin combination with longitudinally arranged circulation tubes therein, a refractory baille extending from side sheet to side sheet supported by the tubes and comprising iso intermediate bricks resting on and supported by the tubesand side bricks in inclined position,` their outer ends resting against the side sheetsand their inner ends formed to coperate-withI the outer ends of the intermediate bricks and provided withsubstantially horizontal and vvertical contacting faces, as and for the purpose specified.

5. A locomotive boiler fire boX and its side sheets in combination with longitudinally' arranged circulating tubes therein, a refractory baillel wall on said tubes comprising'intermediate bricks resting onv and supported by said tubes, and provided with portions depending between ends against the side sheets and their inner ends formed to provide faces supported upon the upper faces of the'adjace'nt intermediate bricks and other faces bearing against the end faces of the intermediate bricks, as and for-the purpose specified.

' 6. A locomotive boiler fire box having longitudinally arranged arch tubes therein, 'in combination. with `a refractoryl arch body supported by the tubesand comprising 1n-y termediate bricks 'resting at-their ends upon the tubes and side bricks'arranged in inclined position, their `outer ends resting against the side sheets*v and their inner ends resting'i/onthe'ou'ter ends of the adjacent intermediate bricks, the outer ends of' the inhe tubes and side bricks 4inclined 1n 'position resting at their'outer termediate bricks being'formed to present substantiallyhorizontal and vertical faces for contact with the innerl ends Vof the side bricks, as and `for the purpose specified` 7. A locomotive boiler ire box having archtubes extending longitudinally there- -in, in combination with a refractory varch body extending from side sheet to side sheet restn lupon the tubes and comprising interme i'ate bricks resting at their ends upon the tubes and having parts depending bev tween the tubes and provided at their outer ends with V-grooves in the upper edges thereof, and side bricks resting at their outer vends against the side sheets and havin Atheir inner ends in said V--grooves, as and orthe purpose specified.

' 4 8. A locomotive fire box provided with arch tubes, in combination with a refractory f' arch body supported on said tubes and side bricks for engagement with the sides of the fire boX and Seach' --formed withha V-groove `at. its inner end, for complementary engagement with either edge'zof said arch body;

In testimony whereof, I have hereunto set `my hand, this 5th day of December, 1911, in

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