US358545A - Lining for furnaces - Google Patents

Description

jizezz C. camz@ E. O. CONDIT.

LINING POR FURNAVGBS.

Patented Mar. 1, 1887. gl.

(No Moda.)

Sterns EZEKIEL C. CONDIT, OF KANSAS CITY, MISSOURI.

LBNING vFOR FURNACES.

SPECIFICATION forming `part of Letters Patent No. 358,545, dated March 1, 1887.

Application tiled March 1G, 1856. Serial No. 195,450. (No model.)

To @ZZ whom t may concern:

Be it known that l, EZEKIEL C. CONDIT, of Kansas City, in the county ot' Jackson and State of Missouri, have invented certain new and useful Improvements in Linings for Fui naces, &c., of which the following is a specifi` cation.

My invention relates to linings for the fireboXes of furnaces, stoves, and the like; and the invention consists in a novel construction of the plates with air-passages, as hereinafter more fully described. i

Figure lisa transverse vertical section of a circular iirepot withm'y improved lining in position. Fig. 2 is a top plan view of the lining, shown partly in section on the line x w of Fig. 1. Fig. 3 is a front or face view of a lining-plate adapted for use in a rectangular {ireboX, and having a portion shown in section to better illustrate its construction.

' It has long been common to line the fireboxes of furnaces and stoves with plates oi' fire-brick, and also of metal, especially when used for burning coal; and in order to properly deliver the air designed to support combustion the lining-plates have been corrugated and also perforated in various ways. It is also well known that combustion is accelerated or rendered more perfect by delivering the air in a heated condition7 and various plans and appa ratus have been devised for that purpose.

The obj ect of my present invention is to produce a lining for hot-air furnaces, stoves, die., which will serve to heat and deliver the air more effectually, and which will allow for expansion and contraction, thereby preventing fracture and rendering the lining more durable.

These linings are more especially designed for use in the Ruttan and similar warm-air furnaces which are used for heating large buildings, andin which soft coal is generally used as fuel. As soft coal produces much more smoke than hard coal, it is especially desirable that a large volume of highly-heated air be mingled with the smoke and gases produced by the burning coal in order to more effectually consume the same, and that is one of the principal objects of my invention.

These linings I usually construct of cast-iron, they being cast in circular or rectangular form, to suit the re-pot in which they are to be used.

The body of the plate A is provided with a series of cells, c, as shown in Figs. l, 2, and 3, which are open at the bottom for the free admission of air, and which extend upward to near the top of the plate, as shown in Figs. l and 2. Each of these cells c has a slit, e, eX- tending from it out through the front face 0f the plate, and which extends vertically the entire width of the plate, as shown, the cells'c and slits e being located near together throughout the whole extent of the plate or lining, as shown in the several figures.

I have shown the lining as being provided with an inclinedflange, C, at its upper edge, which is designed to fit closely against the wall ofthe iire-boX, so as to prevent the air from passing up behind the lining and compel it to enter the cells c at the bottom. This llange C may be dispensed with, the only requisite in that respect being that the upper edge of the lining shall iit against the walls A of the rebox, whatever its form may be, in such a manner as to practically prevent the air from passing up behind the plate.

lVith alining thus constructed it will be seen that a large amount of air will enter the cells c and pass out through the slits c all the Way up, and that, as the lining-plates will necessarily be kept very hot by direct contact with the burning coal, the air passing upward through the cells and inward through the slits will be heated to a high degree, and will thus be in the best possible condition for rendering the combustion of the smoke and gases cornplete. The inwardly-curved top of the cells c also tends to throw or deflect the heated air inward as it escapes therefrom, thus, as it were, injecting it into and causing it to more thor oughly mingle with the gases and smoke as. they rise from the fuel. It will also be seen that by this construction I dividethe inflowing air up into a large number of small currents or streams, by which it is more thoroughly and highly heated and more effectually mingled with the products of combustion.

Vhile I have shown the lining B in Fig. 2 as being corrugated on its exterior surface, it is obvious that it may bemade plain, if desired; but the plan shown secures a more uniform thickness of metal, and it is therefore less liable to crack by the heat. The slits in the face of the plate, while serving to admit air to the fuel all the way up from bottom to top,

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also serve to permit the plate to expand and contract Without cracking.

While I have described this lining as being designed more especially for use with soft coal, it is obvious that it is equally applicable to furnaces or/stoves using eitherhard coal or Wood, and that it may be made of fire-clay as Well as of iron, and that the circular1 ones may be made complete in one piece or in sections, as may be most convenient, much depending on the size of the heater or re-pot.

I am aware that repots for stoves have been patented having vertical holes in their Walls, with small holes at various points for the passage of air; that one has also been lpatented with vertical dues for the passage of the unconsumed gases, and that a back plate for stoves has been patented in which the body of the plate is composed of a series of triangular bars, and therefore I do not claim such; but

The herein described lining for furnaces, consisting of one or more plates, B, provided with the vertical cells c, closed at their upper ends and having their lower ends open outside of the grate-space, with the vertical slits ,6, connecting said cells c with the inner surface of the plate from the top to the bottom of said plate, substantially as shown and described.

EZEKIEL G. CON DIT.

Vitnesses:

Rom?. T. HOLT, N. A. LANPHEAR.

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