US2266785A

US2266785A - Refractory brickwork

Info

Publication number: US2266785A
Application number: US289510A
Authority: US
Inventors: Mclain William Rex
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-08-10
Filing date: 1939-08-10
Publication date: 1941-12-23
Anticipated expiration: 1958-12-23

Description

Patented Dec. 23, 1941 UNITED STATES PATENT OFFICE REFRACTORY BRICKWORK William Rex Mcllain, Chicago, lll. Application August 10, 193i), Serial No. 289,510 y 1 Claim.

'Ihis invention relates to refractory brickwork such as used in furnace bottoms and particularly in the bottoms of blast furnaces, although not limited thereto.

Blast furnace hearths as commonlyvinstalled are usually made of standard brick shapes of fire clay. Experience has show'n that a considerable number of the standard-shapes commonly used in hearth construction oat out of said hearths, thereby decreasing hearth and furnace life, and increasing the risk of premature furnace shut-downs and the loss of metal, and concurrent hazards and costs. A

It is an object of this invention to eliminate or materially reduce hearth brick oatation.

Anotherj object ofthis invention is the provision of a refractory brickwork which is simple in design and one which is cheap and easy to manufacture and install.

Still another object is to provide a keying arrangement whereby al1 the horizontal joints in each key course is broken, thereby hindering to some extent any horizontal ow and penetration of molten metal.

A further object is the provision of an eicient brickwork of the type described in which a double row of bricks are keyed together.

The foregoing and further objects will be apparent after referring to the drawing, in which:

Figure 1` is a perspective of the refractory brickwork of the present invention;

Figure 2 is a perspective of one of the refractory bricks which make up the brickwork of Figure 1; and

Figure 3 is a perspective of one of the elements used to lock the refractory bricks in the positions shown in Figure 1.

Referring more particularly to the drawing, the numeral 2 designates a series of elongated refractory bricks `which are oblong in cross section. The narrower sides of the refractory bricks 2 are transverselyslotted adjacent one of their corresponding ends, these slots-being rectangular in shape and designated at a. The width of each of the slots 3, as illustrated bythe line I,

is the same as the thickness 5- of each of the bricks. The depth of each o1' the slots 3.v desigcording Vto the construction of the present invention, one-quarter of a standard 9 inch x 4.5 inch x 2.25 inch brick will snugly occupy one of the slots 3 in the bricks 2 rand one entire brick will serve as a key for four of the bricks 2, providing, of course, the latter are 18 inches x` 9 inches x 4.5 inches. In assembling the bricks 2 and keys, designated hereinafter at I0, the former are placed upright with their grooves 3 adjacent their lower ends and with their narrower sides abutting. The next adjacent row of bricks 2 is identically composed and with the abutted edges of the bricks 2 in alignment with respect to the abutted edges of the bricks of the first row. The next two' rows of bricks 2 and key bricks I0 are identically composed but with the abutted edges of the bricks in alignment with respect to each other but staggered with respect to the corresponding edges of the rst two rows.

According to the foregoing construction, the keys I0 are composed of a standard-sized brick while the bricks 2 are standard in shape except for the keying grooves or slots, designated at 3. This provides not only for a refractory brickwork which is free from the objections referred to hereinbefore, but one which is inexpensive due to the fact that the bricks have thel standard size and shape characteristics referred to.

In this construction the horizontal joints formed by the keys are broken by every second row of bricks.

While I have-shown and described one specic embodiment of the present invention,` it will be seen that I do not wishto be limited exactly thereto, since various modifications may be made without departing from the scope of the invention, as defined by the following claim.

I claim:

In a refractory brickwork, a pair of opposed rows of contacting substantially identical rectangular bricks similarly disposed in alignment, whereby the surfaces of the bricks of each row are substantially, flush, a similarly formed and disposed pair of opposed rows of bricks in contact with, but staggered with respect to, said c first-named pair of rows, the contacting faces nated by the line 6, is one-half of the thickness of thebricks' 2.

'Ihere are being manufactured at presentstandard refractory bricks of the form of the bricks 2 without the slots 3. As an example the 18 inch x 9'iucl'l x 4.5 inch brick 'is cited. 'Acof the bricks of eachrow having opposed rectangular recesses, thereby providing a keyway between four bricks forming a pair of rows and extending at right angles to the saidrows, and a rectangular key disposed in said keyway.