US1630A - Mode of - Google Patents

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UNITED srnrns raras@ MARTIN BELL, OF ANTIS TOWNSHIP, I-IUNTINGDON COUNTY, PENNSYLVANIA.

MODE OF .APPLYING THE WASTE HEAT 0F BLAST-FURNACES TO STEAM-BOILERS.

Specication of Letters Patent 1\T o. 1,630, dated June 10, 1840.

To all whom it may concern ABe it known that I, MARTIN BELL, of the township of Antis, in the county of Huntingdon and State of Pennsylvania, have invented an Improvement in the Management of the Heat of Blast-Furnaces, said improvement consisting in the manner of applying the waste heat of such furnaces to the generating of steam in steam-boilers, which steam may be applied to the working of any of the ordinary blowing apparatus for supplying the blast of air to the furnace or to other purposes; and I do hereby declare that the following is a full and eXact description thereof.

The only useful application of the large quantity of heat which escapes from the ordinary blast furnace, has been the employing it for thek heating of air to create what is known under the name of the hotblast. I am aware .that it has been suggestedy also that this waste heat might be employed for the generating of steam, and

the working of steam engines; but I do not` know or believe that the same has been practically and successfully applied to this purpose until the same was done by me. The manner in which I have effected this is represented in the accompanying drawin s.

Iigure l, shows the general arrangement of my stack, or furnace, and of the steam ooilers to be heated thereby, with some of their appendages. Fig. 2 is across section of two of the boilers, and of the arches `or masonry in which they are set. Fig. 3, is a longitudinal section of one of the boilers, its flue, chimney, &c.; and Fig. 4, represents the arrangement at the'tunnel-head of the stack for the supply of fuel and the management of the heat which is to be conducted therefrom under the boilers.

In the respective figures like parts are designated by the same letters of reference.

A, A, is the furnace, or stack, built in any of the ordinary modes.

D, D, is a platform on a level or nearly so, with the top of the stack, and from which the furnace is supplied with fuel and the other materials used. This platform in the drawing, is shown as though built of timber, but its construction will be governed by its location, in a manner well understood bv iron-masters.

B,B, are the arches or masonry,in which is set the horizontal' boilers B, B-B, B.

la.. Y.

tending to the front c, whence it returns under the second boiler, and escapes through the chimney V. These flues are shown at H, H. In addition to the openings G, Gr, in the plates C, C, for the purpose of clearing the flues, &c., I intend also to make openings through the brick work at the sides, as R,

R,'with the same intention. In the middle' of the archforming the setting of the boilers, I construct a pit or receptacle S, S, into which the ashes and other matter collected in the iues under the boilers is made to fall by means of the scrapers, and into these pits I make an opening, as at U, for their removal, adapting to these openings close fitting doors or Stoppers; and I also adapt to them at their upper sides,sliding coversT, T. Under the chimneys V, V, there are also receptacles J F ig. 3, for the deposition of ashes, &c., with the requisite provision for clearing the same when necessary. The chimney or chimneys V, V, must be of such height as to cause suflicient draft in the flues. Upon the top of the tunnel there is a plate K of castiron, placed horizontally, and having a perforation in the center for the passage of the heated air or flame, this plate having ledges cast upon it to receive the edges of the plates which it is to sustain, and which form the flues which lead on either side to the boiler arches. Portions of these plates are shown at L, L. The upper plate L', Fig. l, is perforated in the middle, to allow the draft to pass through it when not directed through the lateral flues and under the boilers. This opening is to be provided with suitable covers. This part may be surmounted by a chimney I), which is shown as resting on a rectangular base plate Q, Q, supportedby iron columns Q', Q, the lower ends of which rest upon the stack.

N, is a feed hole for admitting the fuel, &c., and this is closed by a door O.

rIhere isnot any thing special in the part Y of the structure last described,`the plates'L,1

CII

merely forming a-portion of the iues at the vtop of the stack, which extends laterally, so 'as t0 communicatewith those passing under the` boilers nearest to the stack, by which to conduct the heated air under them when required. When so Vconducted the opening in the plate'L, Figs. l and 4, is to be closedv and the dampers which are used to open orV cut off the communication through-the lues to the boilers are to'be raised. M, M, Figs.

' l and t, are the stems of `these dampers',

whichY cross the flues in the ordinary man'- ner, and which may be raised by Chains and .fectly similar in their arrangement, and that one or both pairsmay be used, asmay be preferred. It 1s notnecessary, 1n faet,to con:`

struct both, but itV will beadvanta'geous so to do, as in ease of repairing becoming" necessary, when one set 1s out of order, the other may be used. v v

4Fenna., 14th March, 184015` AEIaving thusffully described thefmanner in whichY I construct my flues and boilers for the purpose of employing thewastej` heat'from a blast-.furnace for the generating of steam, to be applied to the working of ablowing apparatus, by which the furnace itself may and can be blown and the necessary blast furnished therefor, and for other purposes, what I claim therein as constituting my invention and discovery, and` which I desire tosecure by Letters Patent, is.-

The arrangement offlues and their necessary appendages as vhereinbefore hdescribedfbyl,

which I connect a `pair or pairs offboilers with a blast furnace, substantially fin! the.

manner set forth and described, thereby applying the flame and heat escaping out `1 of the` top of the furnaceto create a `steam `power whichmay 'beused to blow the `fur-` nace and which mayv` also ,be applied to other purposes; and itis hereby declared` that I ido not intendncorpurposeto limit myself to the number ofbo1lers, or to the precise form of' the respective parts, as `described andl delineated, but to vary these as I may thinkproper, while I attain'the same end by means substantially the same.` 1 Antis township, Huntingdon county,

Witnesses: .y WM.. P. ELLIOTT,

EDMUND MAHER.

. `MaRTIN BELL..V l

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