US15984A - savage - Google Patents

Description

UNITED; sTATEs PATENT s. T. SAVAGE, or ALBANY; NEW YORK.

sTo-VE Ann EURNE; "1'

Specification of LetterSL'IPaltent No.1 15;984, dated etber i w To alti/whom t may concern. f n

Be it known `that 15S. T. TSAvAGE, of Al-4 bany, inthe State of'Nevv York, have Einvented certain new and useful-Improvements in Stoves and Furnaces forBurni-ngL the Gases -Evolvedf from "the Coals Under Combustion, of `which the following is" a full, clear, and exact description, "reference being had toy the accompanying drawings,`

making. part ofthis specificationrin' Which-L' Figurel, is an elevation ofa stove on `my improved plan fo'r heating apartmentssfFig. 2, a verticalsectionwthereof,fand Figs. =3, and 4:, horizontal `sections taken at the lines Afa, and B, 5, o`f Fig. 2. i Fig. 5, is a Side' elevation of a cookingfist-ove on `my im-f viniammationof \all the combustible fgases evolved Vfrom the coal,l increasing the production of 'inflammable gases from the coal by the distilling effect `of ythe heat gener ated above the coal by the-iniammation"of the combustible, gases above thecoail thereby at the* same time checking the draft of air through the charge of coal, and increasing the heating effect due tothe consumpr tion of a given quantity of coal-by-theflame produced by the inflammation of the' com# bustiblegases in the parts of lthe stoves or furnace remote from the coals onthegrate.

The `same letters indicate like parts in Figs. l, 2, 3, and 4@ In the"` said figures ai represents the `fire chamber yof a cylinder stove with the usual grate b, ash pan-lc, below, feeding door (Z for fuel, and draft door e, below thegrate. The topplate f, Iof the lire chamber is slightly concaved upvvard with a `large central hole g, for the passage of the products of combustion to? a chamber L, above, and the sole purpose of the concave form of the under surfacelofthisplate is the better to direct the products of combustion to the central hole. In the chamber t, and just over the central hole g, there is a circular plate z', of greater diameter than the hole g, but of less diameter than the chamber.` gThis pla-tefis ofcorresponding form With theplateand perforated With numerous small^ldles,*and' the s ace between thisplate'land the platelfyan between lthe edgesof lthis perforated' plate Eand the lcircumference of the chamber `h, is to bersufficientforn the passage^`off`th`e products of chamber j formed by-'two horizontalparal;` lel' plates` 1c,*andf l, the Y surroundingl cyllinder mg and asmalhconcentric" cylinder m* the" centers 'of th'e said plates being cut out to` correspondfvvith the'V inner `circumference-of the tvvo plates`c,Z.` Air isadmitted tothe said chamber j,"either' through perforatibns1 0, in the `surrou'ndinfg cylinder m, *or Vthrough `fs`ide pipes 20, 29, tvhich extend from the said ChamberdOWntO, and through the bottom plate 1,'of theistove, .Either or "bothv of these modes of supplyingv airto" the chamber j, may be' adopted',` or the "air may 1 be supplied 'in any other 'equivalent' manner.`

*The small `cylinder ny is 'piercedf With numeroussmall 'holesl for the `passag'e'of air from t'hechamber j, to the inside of this cylinder, Whiehpylinderis surmountedf'by a conical=^funnel r,"to contract theupper end of the passage throughthesaidsmall Vcylin der. l And above the 'contracted upper en d of the funnelir, there is l ano'therfjchamber s, covered `.by a suitable dome t`,"andthis chamber cornmuni'eatesvvith the. usual exit pipe `orl chimney Coal, either anthracite or 'bituminous is "charged: onthe l grate n and'` y ,after ithas Abeen kindledin the usualianner, the "supply of airy t9 the grater may be partially checked Aby *closing 'the draft door e, but Whethersupplied `with" a partial or full draft below thegratfe combustible gases" `will be evolvedyfrom thecoal' and fill llthe upper part of the fire chamber andin stoves of the usual construction 'such'combustible plied to 1the air chamber .j j, Lbecomes heated inl the-i said chamber passes throughthe small apertures "in: the "small `cylinder n, descends into f the; chamber 7L, thence through the"apertures"in the plate',"to' the n upper part ofthe 'firelchamben and'there mingling with the heated combustibled gases evolved from the coal inlames them*V producing an intense heatin the upper part of the fire chamber. This increased heat in the fire chamber above the charge of coal 4causes the evolut-ion of combustible gases from the coal in'greater quantity Ithan can be inflamed in the fire chamber, and in consequence it passes up through the central hole in the top plate of the fire chamber, around the edge of the perforated plate, and thence into the small cylinder n, where it meets and mingles with and is inflamed by atmospheric air in a highly heated state which air passes into this small'cylinder from the air chamber where it is highly heated by the combustion of the gases. The products of the combustion of the coaland the inflammable gases finally pass off at the exit pipe.

In Figs. 5, 6, 7, 8 and .9, of the accompanying drawings which represent/the application of my said invention to a cooking stove the same letters indicate like parts. In the said figures a, represents the fire chamber with a'grate b, ash pit c, and oven below and back of the fire chamber. At the upper part of the back plate cZ, of the fire chamber, called the fire back there is a long narrow aperture e, surrounded by an air chamber j, which receives air from the room through an aperture g, in each side i plate of the stove. The inner plates L, of

pipe c, or with the flues Z, passing aroundA the oven 1n any suitable manner and thence the air chamber are pierced with numerous small holes to supply air to the vaperture or throat e. And within the fire chamber and in front of the aperture or throat e, there is a perforated plate z", which is wider than the said aperture. This plate is concavo convex as represented in the drawings, Fig. 6, with its concave surface toward the aperture or throat, and the edges of this plate are sufficiently distant from the fire back to permit the gaseous products of combustion to pass around the edges to and through thev aperture or throat e', to a chamber j', com,- municating. either directly with the exit to the exit pipe. The front plates of the air chamber, that is to say, that part of the lire back which forms the. front plate of the air chamber is pierced with numerous small holes as at mm, for the admission of air from the air chamber to the space n, between this part of the fire back and perforated plate z", and of course communicating with the fire chamber either through the apertures of the plate z", or around its edges. As in the heating stove a coal fire being made on the grate, the combustible gases evolved from the coal will be inflamed in the lire chamber by the heated atmospheric air supplied from the air chamber through the numerous small holes. This combustion j', and in thus passing along will be thoroughly mingled with highly heated atmosjpheric air and thereby inflamed producing `a diffused flame which will impart much 1more heat to the stove than could be produced by the combustion of the coal in the grate alone.

I have thus described the mode of applying my said invention to a stove for heating apartments, and to a cooking stove and from these two examples any one skilled in the art ofconstructing stoves, furnaces and heaters, will be enabled to apply my said invention to any other variety of stoves, heaters or furnaces for heating or cooking purposes. And from the foregoing it will be seen that the mode of application of my said invention in the two examples given differ only in the form of the parts.

I am aware that many stoves and furnaces have been made with the view to economiZe fuel by the admission of atmospheric air above or beyond the coal to inlame the combustible gases evolved from the coal under combustion; but I am not aware that any such plans have been made on the principle of my invention. I do not wish however to be understood as making claim broadly to the use of an air chamber to supply air to the combustible gases above or beyond the coal or other fuel. Nor do I 'wish to be understood as making claim to the combination of a throat or narrow aperture in the flue space supplied with air for the combustion of the inflammable gases.

hat I do claim as my invention and desire to secure by Letters Patent is* The use of the throat, aperture or passage surrounded by an air chamber and pierced with numerous small holes through which atmospheric air passes in numerous small jets to the said throat substantially as described when the said throat is located between the fire chamber, and a flue chamber leading to the exit pipe or chimney and combined with a perforated plate interposed between the said throat and the fire, substantially as and ,for the purpose specilied.

S. T. SAVAGE. lVitnesses:

WM. I-I. BISHOP, ANDREW DE LACY.

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