US3030093A - Checkerwork - Google Patents

Description

April 17, 1962 G. P. REINTJES CHECKERWORK 2 Sheets-Sheet l Filed March 21, 1960 INVENTOR. GEORGE P.RE|NTJ|-:s BY wim FIGJ April 17, 1962 ca. P. REINTJES 3,030,093

CHECKERWORK Filed March 21, 1960 2 Sheets-Sheet 2 FlG.4

INVENTOR. GEO RGEP. R El NTJ ES MW-l United States Patent 3,030,093 CHECKERWORK George P. Reintjes, 2517 Jetferson'St, Kansas (Iity, M0. Filed Mar. 21, 1960, Ser. No. 16,598 1 Claim. (Cl. 263-51) This invention relates to a new and improved checkerwork brick and installation for furnaces. One of its chief objects is to produce a combination in which the superposed courses of refractory brick can be bonded and interlocked against relative rotation or twisting which frequently leads to the misalignment of the passageways through the checkerwork and a consequent decrease in its heat absorbing capacity.

Another object of the invention is to produce brick for checkerwork which are so formed that they will uniformly interlock or bond even though the through openings at the top of the checkerwork may be larger than those toward the lower end, as it is sometimes desirable to erect a checkerwork in which the cross-sectional area of the passageways or fiues at the lower portion of the tower is smaller than at the top so that the velocity of the air passing therethrough will be relatively constant even though the temperature and volume at the top of the tower is three or four times that at the bottom or lower end of the tower.

With the general objects named in view and others as will hereinafter appear the invention consists in certain new and useful features of construction and organization of parts as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawings, in which:

FIGURE 1 is a fragmental perspective view of a plurality of courses of rectangular brick embodying the invention, the brick of superposed courses being turned at right angles so that the courses are bonded or interlocked against rotation or twisting out of alinement.

FIGURE 2 is a broken perspective view of one of the brick shown in FIGURE 1.

FlGURE 3 is a fragmental perspective view of a plurality of courses of rectangular brick embodying the invention, said brick being formed with edge and corner notches.

FIGURE 4 is a perspective view of one of the brick shown in FIGURE 3.

In the said drawings, where like reference characters identify corresponding parts in all of the figures, two types of brick are shown by way of illustration, identified as 1 and 2, each being of generally rectangular shape and of preferred material for heat exchange use. The brick l are simpler in configuration than the brick 2 said brick 1 being rectangular and being formed with two or more through passageways 3, said passageways being of desired diameter in relation to the area of the brick, so that each central opening 3, in the preferred construction, will be centered within an annular groove 4 and rib 5 respectively on opposite sides of the brick. By preference, the brick may be made with through openings 3 of varying diameters so that they can be used near the top or bottom of a checkerwork chamber, but in all cases the placement of the grooves 4 and ribs 5 and ICC the grooves 9 and ribs 10 will be constant so that adjacent courses of brick may be bonded or interlocked regardless of the diameter of their through openings.

In the installation of checkerwork it has been found that if the brick are laid up in continuous alined vertical columns, they will, in time, tend to twist or rotate out of alinement. In order to overcome this misalignment which interferes with the flow of air, it is preferred to bond or interlock superposed brick by turning the brick courses at to each other at various elevations. With this arrangement the interlocking grooves and ribs will bond the brick courses against rotation or twisting which misaligns the through passageways and interferes with or obstructs air flow.

The brick 2, in addition to having the spaced through passageways 6, are provided with notches 7 midway their long sides and the four corners are rounded out at 90 as shown at 8, so that these brick may be laid up in courses arranged at right angles and the edge and corner notches will match with over and underlying similar notches or passageways. In this construction the opposite faces of the brick are respectively formed with annular recesses or grooves 9 and ribs 10 so that adjacent brick courses may be bonded against rotation or twisting and misalignment of the air passageways.

It will be evident that with the round air passageways thus provided, the circulation is not impeded as by local eddy current in dead air corners as occurs with square or rectangular fiues or passageways, and that the tines may be readily and efficiently cleaned with brushes or otherwise. From the above description and drawings, it will be apparent that I have produced a construction embodying all of the features of advantage set forth as desirable, and while I have described and illustrated the preferred construction it is to be understood that I reserve the right to all changes Within the spirit and scope of the appended claim.

I claim:

A checkerwork brick of rectangular form having a pair of opposite end faces, a pair of opposite side faces, and upper and lower faces, the upper and lower faces being penetrated by a pair of parallel through openings, the four corners of the brick having 90 circular corner notches extending from the upper to the lower faces of the brick, and each of the two side faces of the brick having at its midpoint a 180 circular notch paralleling the corner notches, and the upper and lower faces of the brick being respectively formed with ribs and grooves surrounding the center openings and edge and corner notches and equally spaced away from the peripheries of the through openings and edge and corner notches.

References Cited in the file of this patent UNITED STATES PATENTS 1,804,393 Aubel et al. May 12, 1931 2,044,090 MacDonald June 16, 1936 2,651,515 Agnew et al. Sept. 8, 1953 FOREIGN PATENTS 513,491 France Nov. 3, 1920 680,458 France Ian. 18, 1 930

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