US1837593A - Boiler - Google Patents

Description

@-311 22, 1931. w. Rf STOCKWELL 1,337,593

BOILER Filed Aug. 13, 1923, 2 sheets-sheet 1 1514 340' ffy Dec. 22, 1931. w. R. sTocKwELl. 1,837,593

BOILER Filed Aug. 18, 1928 2 'sheets-sheet 2 Patented Dec. 22, 1931 UNEIED STATES sTccKwnLn, or' MICHIGAN CITY, INDIANA, AssIGNon .TofWEIn-MCLAIN rANY, or MICHIGAN CITY, INDIANAA Conroe-ANON or DELAWARE j ,j Y

Application.iea'lAugust 1s, V192e.Y Yserial N5. 300,530.`

This invention relates to improvements in boilers. I l A i In boiler construction, and especially in connection with those of the rectangular type composed of a plurality of water sections, Ait isfound highly desirable'to fen'case the boiler `proper in metal sheathing to'hide unsightly portions such as the joints between the sections, and give the exterior'of theboiler a 16 symmetrical,rectangular shape, thereby addi ing greatly to the appearance ofthe same.

The enc'asing sheathing is further employed to protect vand cover the insulation commonly applied to the exterior of the boiler, in addition to holding the insulation in place. The

artistic appearance of the boiler may alsobe further 'improved by finishing the metal sheathing in various colors. I

A 'difiiculty encountered in encasing boil- .291 ers, and especially those of the sectional type,

is to properly lit the casing to the boiler, because boilers of thev same! capacity vary in over-all size when nished, due to' the sec-V tions not being uniformly fitted together. This is especially true of boilers wherein the sections thereof are placed one in back of the other and areconnected by nipples, it being evident that boilers of the same capacity which have the sections tightly fitted .30 together', are shorter from front to back thanY those which have the sections thereof more' loosely fitted together. Y 1

`One object of the invention is to provide encasing sheathing for boilers of the character indicated, which is constructedto compensate for variations in sizes of boilers-ofV the same capacity, thereby accommodating the casing to all such boilers without modifi-v Vgular ash pit member.l vA ported on the base l10,immediately above `the sion and contraction ofthe boilersthereby avoiding damage to the sheathing andjoints thereof, ordinarily` due t'o stretching rof the walls of the casing. "l

` Another object of the invention lis topro-` vide an vencasing structure of'simple design,

which may be readily and economicallylapplied to the'boiler. Y t Y Y g l l 'Yet another obj ectfof vthe l invention is 'to provide van encasing sheathing structure for boilers wherein certain of theiittings of the boiler are employedto secure the sheathing in place', thus avoidingtheuse of additional securing'means and greatlyreducing the cost of encasing the'boiler byeconomizing both inv labor land material.

j Other objects of the invention will more clearly appear lfrom the description4 and f claims hereinafter following.

i 'Inthe drawings forming a part .of this specification, Figure 1 is a top planyiew fof a'square sectional type of boilerhaving my j improvements embodied therein. Figure 2 is l a front elevational view ofthe-'boiler illustrated iii-Figure 1. Figureuis a reareleva' tional view thereof. *Figure 4 isa vertical longitudinal sectional view corresponding.y Y substantially to the `line 1Q-4' of 'Figure 2.,

Figure 5 is a horizontal sectional view corresp onding substantially to the line 5-5 of F 1g` 'itA ure 2. And Figure-'6 isla vertical transverse sectional view corresponding substantially to the line 6 6 of Figure 1. is shown of that type comprising a. pluralitj7 of tube sections A-A, clearly shown in Figures4 and 5. The sections are of the vertical type and are disposedY transversely of the boiler and placed-one' behind the other from front to rear thereof. The sections A are supported on a base 10 which comprises the usual front, rearA and side walls defining a rectan# ashV pit section. The ash pit door is indi'-` cated by 12 and is hinged tothe front wallof the base 10. The clinker door 13 is disposed immediately above the-ash pit door in an'upward extension 14 provided on the base-10. f' Y The boiler is provided with a governor 15 grate'll is supv In said drawings, a construction of boiler Y les located at theytop thereof and having the usual lever mechanism 16 for controlling the operation of the check draft and draft door of the boiler, chains 17 and 18 being secured to opposite Aends Vof the lever for thispurpose. The chainf17 has the lower end thereof con` nected with' a pivoted door 19 mounted onkthe` right-handV side wall of the boiler, as shown in Figure 2, the door 19 regulating the admission .ofair Yto the-ash pit of the boiler so as t0 control the draft.y The chain 18 is connected to a check draft 2O which is mountedv on the hood member 21 secured to the'rear wall of anl altitude gauge the boiler Vand communicating with the usual flue pipe 22 leading to the chimney. The

-In addition tothe governorA 15, the top of the boilerfhas'a relief valve, athermometer and tude auge being designated by^27 and the pipe ittings leading Vto the thermometer and the relief valve being respectively designated :The boiler proper isenclosed within .the en sheathing casing composed of a plurality of plates or sheets which areheld to the boiler A' without the use of additional'securing means,

the-same being clamped to the front and rear walls 'of'the-boilerby the usual fittings emploved. I

' :The en'sheathing 'casing which encloses the boiler is composedofafront wall 30, aback wall `31, `side walls: 32 and 33y and a top i' .Wall34.z AThe front'wallr3r() comprises a sin# gle sheetor plate memberf which .is cut away centrally at the bottom :to correspond with the' upward -extension14jof the front wall of the basecasting 10, the opening provided inthe sheet being Yof smaller size than the extension 14 so that the edge of the plate about'v said opening will be overlapped by the.. side and top edge portions of. the ,extension14; As most clearly shownin Figure 4, the bottom edgeof the plate 30.is,seated Y onthe top portion .of the front wallof ythe base casting 10 and isr overlapped by the up-. per edge thereof, as indicated, by the dotted l lines in Figure 2 and as shownfin tliesection- .y ofthe plate 30 is provided with an inturned alview of Figure V4. The top edge portion flange v35 connected .to vthe body portion, of the plate byfa horizontal section36; The side edges .of the plate 30 are provided with similar. flanges 35V and connecting portions 36.

The plate 3()v is provided with openings 37, 38,. 39e-39,'to accommodate certain of the boiler'fittings.. The Aopening 37 is employed mounted thereon, the altito accommodate the flue cleanout .door frame casting 40 which is secured to the front of the boiler and has the usual rflue cleanoutdoors hinged thereto. The opening 37 is of slightf y ly small-er size than the door frame structure 40 so thatthe flanged edgeportion ofk the casting40 will overlap the'plate 30 at said opening to `clamp the plate against the front wall of the boiler and hold the same in place. The door frame casting 4()y is secured to the front wall of the boiler inthe usual manner, either rivets, boltsfor other securing meansV nbeing employed.

The opening 38is,provided to accommodate the door frame casting 42 which carries the hinged fuel feed door ofgtlie boiler. The casting 42 is affixed to the front wall ofthel boiler in the usual manner, by rivetsror other means, and Vtheopening 38 is of smaller size than the-frame 42 so `that the frame edge willr overlapl the plate 30Vatsaid opening, thereby furtherjclamping the plate tothe frontwall of theboiler. rTheopefnings39 are three in number andv are provided to permit access to plugs 43- 43 ,which-are, employed to close certainopenings inv the front wall of the boiler. The openings 39 are ofslightly larger size than the plugs 43 soy-.that the latter may be readily applied and removed'.

`Both of the side walls 32 and 33 are in the yform of plate members, each preferably com-k prising aV single plate. rBoth of these wallsV are of similar design, veachrbeing provided Vwith vertically. extendingright vangular i liaiiges.44-,44 lat the front and rear edges thereof. ,The bottom` edge of each yplate A32 and 33 rests on the base casting.10, as most beingfprovided with a groove in which the bottom edge of said side wall lis seated. The top edge of each sidewall v32 and 33 is lpro` vided with a rightangular inturned flange Y 45 forapurpose hereinafter. pointed out. As

most clearly illustratedv in Figure 5, the

flanges 44 at the front edges of the platesw32Y and 33 engage within the grooves formed between the vertical flanges'-Y 35 ofthe plate clearly shown in'Figure 6,7the base'oasting I'Ii) V30 'andthe body portion proper of rthe-plate.

Asl will be evidentthe side plates 32 are thus 115 heldin assembled relation with the front Y plate 30 bythe interengaging flange sections 1 thereof. The side plate 32 is provided with proper openingsV vto accommodateV the pipe connections `for the valvegmembers of the water gauge 25 and the plate 33 is provided with similar openings to accommodate the pipe connections of the vblow-off cocks Y26 vat the other sideof the boiler. The openings in the .plates extend through the edges thereofY so that rthe plates may be placed in position by slipping'the same over the pipe Vfittings without detaching the latter. v

The backwall31 of; the casing is composed ofy a pair of plate or sheet members which are vertically arranged side by'side, as ,most

clearly illustrated'inAFigures 3'and 5.y The wardly,

joint "betweenthe two plate members of the wall 31 isV formed by providing one of the plates with an offset edge section 46Aoverlapping the adjacent-edge of the other plate, therebyforming inl effect alap seam. The opposite vertical side edges and the top edge of the plates `forming the back wallf31 are provided with inturned llanges 47,-47 connected to the wall proper by sections 4848,

the flanges 47 and connecting sections 48 being similar to theflan'es 35 'andconnecting sections 36of` the front plate .30', hereinbefore said opening, thereby clamping the same to the back of the boiler. j It -will be understood that the hood casting 31 is secured to the'boiler in the usual manner by rivets, bolts or` other securing means. Adjacent the bottom edge, the back wall 31 is providedwith a pair of openings 50--50, which accommodate` the two return pipes 24Iof the heating sys-f tem, the openings being inthe formof slots so that the plates forming the back wall may be slipped over the return pipes. The

back wall of the boiler is also provided with the usual openings for the hot water heatingV coil pipes, the openings 'in the back wall being closed by cover plates 51--51 secured in the usualmanner. The plates forming the back wall section of the casing are provided with a pair of openings 52-452 registering with the coil pipe openings 50 but of smaller size than the cover plates for said openings, whereby the cover plates overlap the Wall 31 adjacent said openings to further clamp the same to the boiler. The back wall of the boiler is usually also provided with an opening which is closed by a plug 53. The wall' member 31 is provided with an opening registering with the plug 53 and of such a size as to freely permit application and removal of said plug'.

The top wall 34 is composed of two platek members joined by a lap seam 54 which is in all respects similar to the lap seam 46 employed in connection with the back wall 31. The front and rear-edges of the wall section 34 are provided with upstanding flanges 55-55 which engage between the flange 35 and the main body portion of the vfront wall 30 and the flange 47 and the main body portion of the back wall 31 of the casing. The top wall section 34 is thus secured to the front and back walls of the casing. The side edges of the wall section 34 are turned downas indicated by 56 in Figure 6, the' downturned'sections being-overlapped by the top portions of the Vside walls 32 and 33 and the inturnedl flange sections; V45of the side walls engage overthehorizontal edge sections` of the top wall 34. The top wall is also proV` vided with suitable openings `57,-"57 and 58-58, the openings57 being two in'jnumber and accommodating the outlet pipes'23--of theboiler."V The openings'Sarevfourinnuinber and, v'asshowrn accommodate thefrpipe fittings for the thermometer, altitude gauge,

relief valve and governor orregulator'of the I boiler. j Theopenings 573a`nd`58 open through the edges of Ythe'plates'forming the top ywall 34, asclearly shown in Figure 1, soasto"fa'`A cilitate the assemblingof the parts. j y.As will 551.gif.'

be evident', the top wall-'34" of the` encasing structure isheld against displacement by the interengaging flanges of said' wall-and' the frontand'rear wallsvand is further held' againstV lateral displacement by thefabutting eef:

sections of th'efside' walls. They side 'vvalls,.

in turn, aire held against displacementbylthe.

flanges thereof which engage the flanges of the front and rear `walls and "the over"-` hanging top flanges of the side-walls 'serve to holdv the top wallfagainst upward"displae-` ment. y As hereinbefofre. pointed'v out`,the front 'and .rear` Wall members"` 3,0a1'1dE 1j'a r 'e` securely clamped to thecorresponding walls ofthe boiler by. the door framesi40. andi l l at 'the'front ofthe boiler. andthe lOOdICfSit ying21 and cover plates 51associated14 with the back wall ofthe boiler. ltwillithusfbe evident'that the entire casing structurels held togetherwithout the employment of any securing meansfsuch as-rivets 'or bolts, and th atthe `,entire casing is held to. theV boiler directly bythe Vfittings usually ,e'nnployedA in connection with. thel boiler, without theAv use of 'any additional securing elements. The

ibs

cost of material is thusgreatly 'reducedv and, Y

further, the labor necessaryfin assembling y the parts'isv a great dealless' than 'when the plates forming the `casing are secured together by seaming or'othersecuring opera? tional*l f 'f l In 'applying the casingto the boiler,` the front plate 30 `is preferablylfirst`placedin position and the flangededge-section of the top wall '34' engaged-with the vflange 4of theV plate 30. The side plates and33 arenext applied and the flanges thereof engaged with theflange ofthe plate 30 slightly tilting:

the plates 32`and 33. ,Afterthe llanges' have been engaged, the side plates areforced into position against the sides of theboiler there',-A

by engaging the overhanging top flanges over Y the top wall 34. The back wall""31,fcom` posed of the two plates, is next applied,"the

plates beingapplied separately. :so: as torenl,

Vgage the flanges thereof over the f flanges of the top wall' 34 andside'vvalls 32 and33'. u After vthe flanges have been interengaged,

een

'l the plates-,forming the backzwall areY forced together edgewise, to overlap the oii'set edge 46 with the adjacent edge of the other plate.

The hood 21 andthe cover plate 51 are then secured in position, thereby clamping the back wallin place. The door :trames 40 and i2 are also* securedin position toclarnp the Y front wall 31 to 4theboiler.` As will be evident, Vwhen the, parts of the encasing structure have been thus assembled, the-,same will neatly lit the boilerand due to the play betweenthe engaging iianges of the plates,

boilers independently of boilersl of the .same capacity, of the'sectional type y,whereinlthe sections arecplaced one in back of the other,[is ,unavoidable because inclampingor forcing the sections together,

some of the sections will be fitted together moreV .tightly than others,Y therebyv varying c thefspacing between the sections; further,

often all of the sections of one boiler are fitted together more loosely than the sections of another boiler v of 'theA same capacity,

- thereby lincreasing theover-all length, from Afront to rear,`rof the first named boiler over that `offthelatter. i v

i 1,837,5ea

rear edges abutting the front*` and rear plates to confine lthe same therebetween, the two pieces of said top `plate having overlapping edge portions, said pieces of the topf-plate having the outer sideedges thereof downturned, said .downturned edges, engaging said side plates, whereby the top plate is held thereby against lateral' shift, said front and rear plates being clamped to the .front and rear ends of theboiler, respectively.

" In witnessl that -Ilclaimr the vforegoing I have hereunto subscribed myfname this 8thY WILLIAM n.7 sToCKwELL. Y

Asjwin b'evident, in addition to compta` f s'atingfor'variations in sizeslof boilers, rny

` improved encasing structure will also accorn- Y tfnodate itselfvr to the expansion vand contraction of boilersdue'tofchanges in te1npera.VV

ture, therebyavoiding damage to the joints between the sheets due to stretching of the casing.` p u Althoughin the present instance, the en-V sheathing casing` is'y shown as directly cover- 4ing'the boilervproper, it will be appreciated that it is'within the invention to provide the exterior of the boilerwith insulating mate rial andap'ply the ensheathing casingso as to'ernbrace the ,insulating material to holdy vthe Vsame in j position 'and also protect it against damage.

now consider the preferred manner of carrying outl my invention, but the saine is merely illustrative and I Vcontemplate all changes and modifications that come withiny i L,the scope of thecclairri' appended hereto. y

Iclairn: Y ,Y A Y In combination, a broiler of substantially I rectangularshape;y and a Vcasing Aenclosing said. boiler, said casing including a one piece front plate, a rear plate, a pair of one piece sidel plates, and a twopiece top plate, said vfront and rear plates having inturned'vertical edge portions at opposite sides thereof overlying lsaid side: plates andconfining the same, said front. and'v rear plates having'.A in

turnedtopiianges overlying the'front, and

las

rear :edges of the top lplate to conine ysaid plate, said top plate having the Lfront and Y I have herein shown andv described what I Y

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