US76563A - Michael veehoeten - Google Patents

Description

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Letters Patent .2l-7o. 76,563, dated April 7, 1868.

IMPROVEMENT IN LIME-KEES.

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*TO ALL WHOM IT MAY OONCERN:

Be it known that I, MICHAEL VERHOEVEN, of Rochester, in the county of Monroe, and State of New York, have invented a certain new and useful Improvement in Lime-Kilns; and I do hereby declare that the following is a vfull and exact description thereof, reference being had to the accompanying drawings, making part of -this specification. i

Figure l is a central vertical section of my improved lime-kiln.

Figure 2, a similar section at right angles to g. 1.

l Figure 3, a horizontal. section inplane of line xx, iig. 2.

Figure 4, a section in line yy, g. 2.l

Figure 5, a vertical cross-section of one of the furnaces.

Figure 6, a perspective view of one of the furnace-doors.

Like letters of reference indicate corresponding parts in all the iigurcs.

My invention has special referencelto the construction and arrangement ofthe furnace and the ilues leading therefrom.

In the drawings, A- represents the cupola, which is of usual form, having a draw-arch, a, and peep-holes, b b.

At the proper position, on two opposite sides, are situated furnaces, B B, with ash-pits, cc, beneath, which serve to hold water. These furnaces are of peculiar construction.

A grate is formed of a series of loose bars, cid, which simply rest across sharp-edged supports, ff. These bars may be drawn out singly, whenever desired, as in r'ed lines g, 8, which is a matter of much importance to prevent clinkering. Whenever clinkersform, the grate is at once relieved by drawing out one or more of the bars. This arrangement also allowsan easy replacing of-any portion of the grate whenever i't becomes burned out. v

On each side and in the rear of thegrate are made inclines ggg', those on the side bevelling upward a'nd outward laterally,- gradually widening toward the shaft, so as to'embraccnearly the whole diameter of the interior of the kiln, while that in the rear simply bevels'upward and inward, forming a sort of rim or boundary between the furnace and shaft, as clearly shown. These inclines are of m-uch'importance in expanding and directing the heat' from the furnaces in a'slan'ting direction up into the body of the rock, so as to spread through the whole area of the shaft, as indicated by the'arrows in iig.-3. In ordinary lime-kilns, these sides ofthe furnace are vertical, and the heat is directed only in a close body toward the interior of the kiln, without striking the sides. It is my object, in -thus slanting the sides of the furnace, and widening inward, to obviate this diiiculty, by spreading and diifusing the heat, as much as possible, so as to strike the whole cross-area of the shaft, and thus` produce an equality in burning. y

Piers h L h are built up at the inner ends of the furnaces to support the arch, as shown.

On the sides of each furnace are situated passages, C C, which communicate at the inner ends with the shaft of the kiln at right angles, or nearly so, to the furnaces, while at the outer end they communicate withthe open air for the removal of ashes, &c., that collect there. Lateral passages z'z' connect these side passages with the furnaces, whereby the heat is carried around to the sides of the shaft, and `open at that point, 'Where the least heat reaches vdirectly from the fu/rnace. These passages act in conjunction with the daring sides of the furnace to produce suchan lequality of heatas will burn the lime e`ectively.

I construct the top of e'ach furnace with a double arch, c k', with an intervening space, Z, which communicates directly with the outer air, as clearly shown in g. 2. This arrangement not only cools the arch, 4and in.

a great degree prevents it from burning out, but it also enables .the lower arch c to be replaced when necessary, without disturbing the other parts.

These features of removable grate-bars d, the flaring sides gg', the side passages O, with lateral passages z', and the double arch kk', with an air-space, Z, between, constitute the novelty of this part of my invention.

A casing, D, of the form shown in iig. 6, is built into4 the outer end of each furnace, to which is hung a.

door, E, in 'such a-manner that the bottom sets out more than the'top, so that' when the door swings out, the tendency is for it to close 'of its own weight, thu's making it automatic. Y

The door itself consists of a cast-'ron frame, m, and a tile or slab, u, of earthenware. fitted therein.4 This arrangement of the door pret ents, `in a great degree, burning out," and when the tile becomes worthless, it is replaced by another with the greatest'facility,

At a suitable distance from the top of the cupola, angular Yilues, pp', extend from the shaft outward,'as

clearly shown, `the -object of which is to allow a freejpassage of steam, gases, and sulphur-fumes from the body of lime. In filling the shaft, the top of the same becomes in a degree clogged or choked, preventing a free escape of steam, 857e., and the consequenceis, in ordinary kilns, the calcned-lime becomes dis'colored and injured.

The nguLlan-Huespp obviate all diiculty of this kind,` by providing escape belcw thepacked top, which escape is always free. y

What I claim as my invention, and desire to secure by Letters Patent, isy v The cnnstruction and arrangement of the' furnaces with the removable grate-bars d, langular diusing sides ggg', lateral passages C z', and-double' arches lek', with 'intervening air-space l, the whole operating in the mannerand forthe purpose hereinv set-forth. p

In witness whereof, have hereunto signed my name in the presence of two subscribing witnesses.

MICHAEL VERHOEVEN.

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