US500507A - Sectional boiler - Google Patents

Description

(No Model.)

W. H. PAGE. SEGTIONAL BOILEB..

Patented Julie 2'7, 1893.

Tu: Nnnms PETERS no.. moommo.. wAsHmcfcN. n. c4

UNITED STATES PATENT OFFICE.

WILLIAM ILPAGE, OF NORWICH, CONNECTICUT, ASSIGNOR TO THE WM. H. PAGE BOILER COMPANY, CF SAME PLACE.

SECTIONAL BOILER.

SPECIFICATION forming part of Letters Patent No. 500,507, dated June 27, 1893.

Application filed January 18, 1893. Serial No. 458,832. (No model.)

To all whom it may concern,.-

Beit known that LWILLIAM H. PAGE, a citizen of the United States, residing at Norwich, in the county of New London and State of Connecticut, have invented certain new and useful Improvements in Sectional Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to improvements in sectional boilers more particularly designed for heating hot water for use in hotwater circulating systems for heating houses, stores, shops, and other places; and the objects of the invention are, first, to provide a novel form of flrevpot adapted to the circulation of waterwithin and around the same, which will be adapted to upper sections of any desired form, and which will prevent the water therein from chilling the re within the pot; secondly, to provide a novel form of' upper or top section adapted for receiving a vessel to heat the contents thereof and .also to provide for the circulation of water therein and for the escape of smoke and products of' combustion the heat in which is utilized to the best advantage; and finally to so construct and arrange the parts of the furnace that an expansion-tank can be used in connection therewith, whichktank is adapted for operating a regulator to control the draft auto# matically through the furnace.

With these and other ends in view, the first part of my invention consists of a fire pot cast or made of a single piece of met-al and com` prising the inner wall, an outer wall surround-v ing the inner wall and forming therewith an intermediate water chamber, and a crown sheet having vertical smoke flues and hollow radial arms which connect the surrounding water chamber with a central bowl or depression arranged in the crown-sheet.

The second part of my invention consists in the combination with the crown sheet of a fire pot provided with the central bowl or depression, of a top section having a water chamber in its upper part and with two depending annular anges or rings, the inner flange or ring being connected'with the central depression or bowl of the crown sheet and the outer flange or ring resting upon the crown sheet outside of the smoke fines therein, and an external casing arranged between the top or upper section and the crown sheet of the fire pot. The two surrounding flanges or rings of the upper section are arranged to form a smoke chamber between them, and one of said flanges having an opening atone side thereof to permit the products of combustion to pass from the inner smoke chamber into the outer smoke chamber formed by and between the outside flange or ring and the external casing. The products of combustion are thus caused to pass from the smoke flues of the crown sheet into an inner smoke chamber and lthence around an outside smoke chamber between the fire pot and the upper or top sec tion of the furnace; and in this top section is provided a vertical opening in which a vessel can be placed for the purpose of heating the contents of the same. This will be found very advantageous when the furnace is used in small stores or shops where it is very often desired to boil water, or for heating glue, or for various other purposes.

The invention further consists in the combination of a fire pot having the central depression of bowl in its crown sheet, an upper section provided with a water chamber and with a depending ring or flange which is connected with the upper part of the central bowl or depression, and an expansion tank secured in the upper part of the top section and fitting in the depending flange or ring thereof and in the depression or bowl in the crown sheet, said expansion tank being arranged out of Contact with said depending flange or ring and with the depression or bowl so as to leave an intermediate water chamber in which the water is free to circulate through the water chamber in the lire pot, the depression or bowl thereof, the chamber between the eX- pansion tank and the depending flange, and the water chamber in the top section of the furnace.

The invention further consists in the novel combination of devices and peculiar construction and arrangement of parts as will be hereinafter more fully described and particularly pointed out in the claims.

IOO Y I have illustrated my improved sectional boiler in the accompanying drawings, for`ming a part of this specification, and in which- Figure 1 is a vertical sectional view through the boiler. Fig. 2 is a top plan view looking down upon the crown sheet of the fire pot,v the upper section andthe external 'casing'f the;` boiler being removed. Fig. 3 is abottom plan* View of the top or upper section of the fur- 1o nace, the tire pot and the external casing be-gy ing omitted.

Like letters of reference denote corresponding parts in all the gures of the drawings, re ferring to which- A designates the fire `pot of A'my improvedf sectional boiler, and Bis the top or upper se`c'" tion of the boiler. This tire pot is constructed or cast' inr la single piece inf contradistinction tearre pot inwhich `the "parts thereof-'are zo 'made' or cast'inseparate piecesnand united or l joined together by peculiar joint's,=an example of *wh-ich 'isdisclosed in lmy prior patent of J une 17, 1890, No. 430,589. In this form of boiler, theinternal andrexternalwalls of the z 5 ire1potarecast in'separate pieces and fjoined;

*at the base "byf means of groove fand-cement jointsyand the' idoor casingf-is-'falso cemented;

ont-o the externalwall of the firepot. But in? my pl'es'entinfvetion, the external'and' inter- 13o n'al `wallsofthe tire pot, andfthe' crown sheet` thereof, arey made orV casty in afsingle piece' `of metal, and'said crown l sheet has ttransverse -smoke 'hues `and -hollow 1 radial harms "which forma continuonswater Ipassage for the ci`r.

3 5 cuflationlot `water from thelsurronndin'g cham-g berfto the central bowl' or` depression =i'n the` "crow-n sheet of'th'e-refpot. The external and :internal-walls, a, a', re-g "spectively, of the tire pot `are cast-'integrali 4o withthe' connecting `webfa at" the bottom of; thewalls, and the 'crownl'sheet' Cfof thelirel pot is also integral with the-internal Yandfexf ternalwalls @,a. -fThis crownsheet is pierced, `with transverse passages '-c, c, forming the? F smoke fines for the: passage f of thelpr'odn'cts of combustionfrom therefpot; and theseI smoke fines 'are T*separated f by the radialhoh` low arms Dwhich communicate with `'the 'up-1 per part Aof l the "Water chamber {Af formed-by 5o -`andl between thelwalls a, a', the iinner ends of the hollow* radial i"arms D discharging into al bowl or depression@ formed inthe center of. v`thecrownsheet,'as clearlylshown. The'inner surface of the internalfwall a" of 'the ireipotl *islprovidedwith'a multiplicity f'projections'X ory points' d 'which extend' entirely =around= thelntern all wallandt `for asuitable distanc'eabove the vgrate; "and -these projections d ffserve Ikto@ keep the fuel in the fiirelpot from'having di 6o rectcontactwitlt the internal wall a', and thus 'prevent' the coldwater enterin'gthe' *chamber A from chilling the fire in the fire pot. The usu'alfeed door e' is provided inthe side ofi the! firei'pot 'f above thef projections or' teeth' d 6 5 therein; and* belowthe fire pot is arrangedthe grate 4and ash pit, l which may be 'of 'the-ordi-gt nary or any preferred construction. This* tire pot may be used in dierent styles of boilers and in connection withone or more upper or top sections of any preferred style; but in a low down boiler specially adapted for hot water heating and for use in stores or shops, I prefer-to-use-the upper section-B illustrated 'more particularly by. Figs. l and 3 of the drawings. "Thistop sectionB is provided with a water chamber F in its upper part and with .two flanges or rings G, H, which are preferably arranged concentric with each other. This top or upper section Bandits depending flanges also constitute a single piece or casting, as they are made integral with each other, and adapted to be quickly and easily fitted and connected to the tire pot. The top section has a vertical central opening formed "therein which extends'y throughn the-water chamber F therein, vandf-th-e innerdepending ange' G is concentric with ithis opening; said ange G Ldepending from the top section'for a suitable f distance. This inn-erl dependingI flange G is designed to be connected with -the crown sheet of' the'ltirefpot around lthe central "depression or bowl" thereof Vand `asone means for easily :'an'd 'cheaply connecting the central fiange or ring of the top section with the crown sheet, I provide theI bowl orl depressiom-at itsupper edge, withia series of-Tscrew threads with-which' engage rsimilar screw threads formed; on the flower part of the dependinglaniag'eGr,y thescrew threailedjolntf betweenE the bowl' of the/crown Qsheet Afla11'., *e Gf `the top section' being indicated latfg in Fig. lof the drawings. Theex- Eternal integral'fliianfge Hr 'of tt'hett'op-section is arranged around the internal .flange Gland-at ='a=si1itable distancel therefrom 'to form"fan' initermediate smolre fcha'mberil; and "these *flangesA Gigi-U01?4 the l top section :fare "s'o'disiposed' that-when the boi-ler is puttogether' the f external lin tegral l'flange 2H f will f rest onthe "erownfsheetlC outside vof lthefsmekeflues therein =so` th'at Lthe smoke jand fp'r'o'du'cts of "combustion which pass through it-hesmoke .luesin the'fcrown Isheet Ewifll be -Adis'eharged =directly f ihto tliefsm'oke chamber Ii between Atheinner vand external lflanges f G,fl-I;6t' the -topsection The'eXternal iintt-5gral= flange H f' of' the top 'section is f providedyiat th'efrent side of the boi'lfcr,with-a transverse u passage or opening'rhythroughwhichflthe'sifnkeL and products Yof vcombustiofn from the' cha'rnberv I 'm'ayl pass into an 'out-'er ffsurrounding smoke chamber gJ which is formal-5d f by and between "the internal ffiangeHiand E:an 4"external lmetallic casingj. lhisfcasingjisfarrangedaround theiian'ge for vring H1 of the top 'section and v nearly Hushfwththe` si'des of the tire pot-and thew'fater chamber of the 1 top fse'ction, and this casing jfisl 1heldfor confined inf position by flanges jfjl; provided1 on' the opposihg'faces vlofthe topfsection'ian'd 'the crown lsheet,- near the peripheries thereof, ias shown 'by' Fig.- 1. The' top 'sectionlis furtherp'rovided with a vertical opening K #which extends through the water chamberF' in 4the 1 top section' Eand communicates with thes'moke'chambers gJ, I,

IZO

at the opening 77, provided in the outer flange or ring I-I of the top section; and in this opening K can be fitted any suitable Vessel which is thus adapted to have its bottom exposed to the action of the heat contained in the products of combustion as they pass through the opening h between the chambers I, J, in the top section of the boiler. The products of combustion are not permitted to escape directly from the internal smoke chamber I into the exit pipe, but they are caused to pass horizontally from the inner smoke chamber through the opening h at the front of the boiler and then pass backward around the outer smoke chamber J tothe pipe-hole at the rear side of the boiler, whereby the heat in the escaping .products of combustion are utilized to the best advantage in heating the water contained in the chambers of the top section and the radial arms D of the crown sheet.

In a boiler adapted for heating water for use in water circulating systems, it is desirable to automatically control the draft passing through the ash pitof the furnace or boiler, and to the accomplishment ofthis end,

I have constructed the top section B and the fire pot inthe manner described so that an expansion tank L can be fitted in the flange G of the top section-andthe depression or bowl of the crown sheet, which tank is adapted to be filled with water and to be connected with an automatic draft regulator, one example of which is shown and described in my pending application filed August 8, 1892, Serial No.'442,502. This tank L is cast or made in a single piece, and it is imperforate so that it does not communicate with the water chambers in the boiler.

The tank is fitted in the central opening and the flange or ring Gr of the top section,

and with its bottom in the depression or bowl in the crown sheet, but the walls of the tank do not contact with the flange G or the depression so that a surrounding space M is provided in which the water is free to circulate around the tank, the water passing from the chamber A through the radial arms D in the crown sheet, thence to the depression or bowl, the chamber M, and the chamber F in the top or upper section B of the boiler.

The operation and advantages of my invention will be readily understood and appreciated by those skilled in the art from the foregoing description taken in connection with the drawings.

I am aware that changes and alterations in the form and proportion of parts and details of construction of the mechanisms herein shown and described as an embodiment of my invention can be made without departing from the spirit of the invention, and I therefore reserve the right to make such modifications as fairly fall within the scope of my in- Vention.

Having thus fully described my invention, what I claim as new, and` desire to secure by Letters Patent, is-

l. In a sectional boiler, the fire-pot comprising an inner wall, an outer wall surrounding said inner wall and forming therewith an intermediate water-chamber, and the crown sheet provided with a central bowl or depression and the hollow radial arms which communicate with said central bowl or depression and with the surrounding water chamber, said radial arms forming between themselves the vertical smoke flues which extend through the crown sheet between the bowl or depression therein and the inner wall of the re pot, substantially as and for the purpose described. f

2. In a sectional boiler, the tire-pot cast in a single piece and comprising the inner wall, an outer wall surrounding said inner wall and joined thereto at its lower edge by an integral web, and the crown-sheet provided with the central bowl or depression and the spaced hollow arms which form between themselves the vertical smoke-fines and which communicate respectively with the central bowl or depression and with the chamber between. the

inner and outer walls, substantially as described. A

3. In a sectional boiler, the lire-pot comprising the inner wall, an outer wall joined to the inner wall at its lower edge by an integral web, and the crown sheet, all cast in a single piece, said inner wall provided with the integral projections on its inner surface, and the crown sheet having the central bowl or depression and the spaced hollow arms which form between themselves the vertical smoke fines and which communicate respectively with the depression or bowl and with the chamber between the inner and outer walls, substantially as andY for the purpose described.

4t. The combination with a fire pot having the central chamber and the transverse smoke flues in its crown sheet, of a top or upper section containing a water chamber, andthe vertical walls between the crown sheet and the top section and forming therewith the inner and outer smoke chambers I, J, substantially as described.

5. In asectional boiler, the combination with a tire pot having the crown sheet provided with the vertical smoke flues and the central depression or bowl, ot a top section provided with a water chamber and with two depending rings or flanges arranged within the edge of said section, one of the flanges or rings being connected with the crown sheet around the central depression therein and the other flange resting onthe crown sheet outside of the plane of the smoke fines, thereby formingv a smoke chamber I between the two Hanges or rings G, I-I, and an external casing between the top section and the crown sheet IOO 1.3of chamber "M v"and y:the twoconnected rsrnokef innenwall and the H externallmall being providedfwith `the transversefopeni'ng 7l/and the `topisection havingf alvertical opening' `Kor i the purpose ldescribed substantially as -set forth.

9. 3vIna sectional boilerithe'combination; of 'a fire "pot having Viitscrewn sheet :provided *with fa central bowl or 'depression and Athe `ranged. Ato`"fo1xn afsmokechamberflibetwe'en;` smokeuesfontsidefcf saidbowl, the' topA sccfthe same, one ofsaid` flanges being connectedl tothe crown sheet around thev central depres 'sion therein and the outeri'lange bearingfoni the crown sheet outside of `"che line c ofv the@ smoke fines;snbstantiallyasand "for the pur-L` pose described.

`7. `-Inl a sectional boiler, the combinationof a re pot having its crown sheet"providedl with* theltransverse s moke y'flu es; the topf-secll tioni having awater chamber; andv the-vertical' vWalls arrangedbetween*thecrown 'sheet andithe top section"and`for1ning therewith theintern al'` andfexternal smoke 'chambers' I, *J ,sb-if stantiallyas and for thel purpose described. 8. \Ina: sectional boi-1er, therconibination ofi a-f crown sheet provided with f the' transverse` 'smokelu es land the central "depression, the? top 'section having lthe waterch-amber;the"r vertical walls between the topsection and the crown sheet and forming the centralwater chambersl, 5J, 1 said vertical` Wall'l between the* tioni havin gawater chamber; the an nu'larverticalwall' or partition Il between thet topsection* andthe crownlsheet and having tslower Vedge connected lto x"the dbowl or ldepression fwithinthe lline f i#smke fiues inthecrown sheet, BAVand fthe "depending tank suspended within thewater chamberof the' top i section, theannnla'r-verticalwalhandf thebo'wlor de- "pression'inthe l"crown *'sheetywherebyra narfrow water chamberfM isV Iprovided between f the 'annular vertical wallLzthe bowhand the suspended tank and the contents ofsaidchamfberare subjected to r.the:'directfaction ofthe --escapin'g products ffwcom'bnation-Whichim- 'pinge-against the" bowlxand the=annular`wall,

l`-s1ibstan`tiallyasanl for 'the purposedescribed.

Intestirnonywliereo ffIfa'X my signatu reT in y'presence f two=witnesses.

`WIET IA-M I-I. PAGE. "Witnesses:

fILUcIUslBRoWN, lFRANK. H. `=PATRICK.

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