US316397A - Kiln for burning bricks - Google Patents

Description

(No Model.)

I. PLUMB.

KILN FOR BURNING BRICKS, TILES, 8m.

,397. Patented Apr. 21, 1885.

p I I 1 v xv liv vmron WITNESSES lwgppher. wmhmon. n c

FAWCETT PLUMB, OF

KlLN. EORBURNING ATENT Erica.

STREAT'OR, ILLINOIS.

BRICKS, T|LES,, 81.0.

SPECIFICATION forming part of Letters Patent No. 316,397, dated April 21,1885.

(N0 model.)

To all whom it may concern:

Be it known that I, FAWCETT PLUMB, of Streator, in the county of La Salle and State of Illinois, haveinvented certain new and useful Improvements in Kilns; 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 invention relates to an improvement in kilns for burning bricks, tiles, 850., the object of the invention being to provide improved means for supplying coal to the combustionchambers of kilns; and with this end in view my invention consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claim.

In the accompanying drawings, Figure 1 is a vlew in elevation of a kiln provided with my improvement, and Fig. 2 is aview in vertical section of a portion of the kiln.

A represents a kiln of any approved construction, having an enlarged base, B, the upper portion of which forms an annular ledge, O, encircling the kiln. I

Within the ledge O, at any desired distance apart, are inserted the fuel-hoppers D, which are preferablyv made of cast-iron, with outwardly-flaring sides a. The under side of each hopper is provided with a bottom flange, b, on which rests the upper ends of the inclined grate-bars c, the lower ends of which rest upon a crossbar, d, secured atits ends in the brickwork. I may employ any improved construction of grate-bars, which may be stationary,or be provided with means for shaking and slicing the fuel for the removal of ashes and clinkers therefrom.

WVithin the kiln are constructed the fines E, which are located in front of the grate-bars and supported on the bottom F of the kiln.

Between the outer edge, e, of the bottom of the kiln and the lower end of the inclined grate-surface is an opening, f, through which the clinkers and ashes fall into the ash-pit g.

Fresh air is admitted through the openings h it above the ledge, and conducted through the passages t 2', which may be made of any desired length,within the wall of the kiln, and admitted to the upper end of the flue E, each one of the fines being furnished with an airsupply of this character and construction. The air is heated in its passage through the heated wall of the kiln, and is then discharged into and commingled with the gases flowing upwardly through the flue, thereby insuring a complete combustion of the gases before they escape into the interior of the kiln; also, air may be conveyed through pipes G, located in the ash-pits and extending upwardly into the flues E. This arrangement of pipes insuresa constant supply of heated air to the unconsumed gases and products of combustion.

In the operation of the kiln the several hoppers are filled with coal, which drops through the openings H in the bottom of the hoppers and accumulates on the inclined grate-bars, forming a bed of fuel thereon. As the coal is consumed fresh coal will descend by its gravity, and thereby replenish the bed of fuel 011 the grate without necessitating the admission of outside air, as in the'ordinary construction of kilns, which tends tomaterially deaden the fire, and hence cause a great loss of heat. The ashes and clinkers areremoved from time to time through the opening f and dropped into the ash-pit. As the coal is ignited it burns from the bottom of the magazine, and is first converted into gas and coke. The gases escape inwardly and then upwardly through the fines E, fresh air being commingled therewith in the flues to supply the necessary quantity of oxygen to insure complete combustion of the gases before they enter the kiln.

A kiln thus constructed is, in effect, a baseburning kiln, it being operated on the principle of a base-burning furnace or heater.

Any number of hoppers may be located around the exterior of the kiln and supply heat to the interior thereof forbaking tiling I or any other articles.

In view of the fact that the arrangement of hoppers and inclined. grate-surfaces renders the feed automatic or self-regulating, the labor of an attendant will be much less than is required to operate kilns as ordinarily constructed, and'also a less amount of fuel will be required.

As it is evident that many changes in the construction and arrangement of parts might be resorted to without departing from the spirit of my invention, I would have it understood that I do not restrict myself to the exact construction and arrangement of parts fire-boxes and communicating with the vertishown and described; but cal flues above the fire-boxes.

Having fully described myinvention,whatI In testimony whereof I have signed this claim as new, and desire to secure by Letters specification in the presence of two subscrib- 5 Patent, is ing witnesses.

The combination with a kiln having an enlarged base,,of the vertical flues, the fire-boxes FAWGETT PLUMB' communicating with the vertical flues, the'air Witnesses: pipes entering the vertical flues below the fire- JOHN E. WILLIAMS, :0 boxes, and the air-flues located outside of the GEORGE GOULDING.

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