US2303559A - Checkerwork construction - Google Patents

Description

s. P. KI NNEY CHECKERWORK CONSTRUCTION Filed'Dec. 15, 1941 Fatented Dec, 1, E9 42 rs srrss 2,303,559 CHECKERWORK CONSTRUQITION Selwyne r. Kinney, rittsbur a'ra, assignor to H. A. Brassert & Company, New York, N. Y., a corporation of Illinois- Application December-'15, 1941, Serial No. 423,000

8 Claims. (Cl. 263-51) stable construction. Checkerwork of this character provides vertical flues extending throughout the construction.

Checkerwork formed in this manner standard rectangular brick does not lend itself to the maximum area of heating surface for the volume of the checkers. Other forms of checkers have been put into use for the purpose of giving increased area. of exposed surface, but

such forms, in general, require expensive and fragile brick of special sizes and shapes. Where thinner brick are used to give increased surface, the checker construction is reduced in both strength and stability.

It is an object of the present invention to provide a new and improved checkerwork which is strong and stable in construction.

It is also an object to provide a checkerwork having a flue system which is open from the top to the bottom of the checker system, with the required.

it is a further object to provide a system of this character which presents a maximum of heat transfer surface per unit of brick volume while maintaining a strong and stable construction.

it is an additional object to provide a checker system which gives I a. high eflicienc'y of heat transfer with reversal of flow of gas throughout the system.

It is another object to provide a checkerwork which presents both vertical and horizontal heating surfaces, combined with cross flues, thus producing turbulent gas flow and rapid heat transfer throughout the system.

Other and further objects will-appear as the description proceeds.

i have shown certam preferred embodiments .7 of my invention in-the'acoompanying drawing,

.in which Figure 1 is a fragmentary 'plan view of one form of checkerwork according to the present invention, one course of brick being broken away so as to show the next lower course;

Figure 2 is a perspective view showing one form of brick; v

Figure 3 is a section taken on line 3-3 of Figure 2;

Figure 4 is a view similar to Figure 2 but showing a modified form oi brick;

withslot ii is provided with flared portions Id ad- 30' flues arranged so that they may be cleaned when from top to bottom thereo cutaway or flared portions 22.

Figure 5 is a section taken on line 5-5 of Figure 4;

Figure 6 is a view similar to Figure 1 but showing a modified form of brick; and

Figure 7 is a perspective view brick used in the construction of Figure 6.

Referring first to the form of brick used in the checker construction of Figure 1, the brick may beof the shape shown in Figures 2 and 3 or the shape shown in Figures 4 and 5. The 'difierences are readily apparent, particularly from a consideration of Figures 3 and 5. The brick of Figures 2 and 3 is an elongated rectangle which.

may be of substantially the same proportions as usual types of brick. The brick is provided with a central slot I I which extends through the brick The slot is so proportioned and located that end walls 12 of the brick adjacent the ends of the slot are of a thickness substantially equal to the width of the slot, and the side walls it of the brick are of similar thickness. As shown in Figures 2 and 3, the

jacent the center of the upper and lower faces of the brick. These flared portions M are substantially equal in width to the width of the slot ii itself.

. The form of brick shown in Figures 4 and 5 differs from that of Figures 2 and .3 only in that it is of considerably greater height. This brick is provided with a slot 2! having "the lateral As shown in Figure 5, these flared portions 22 do not extend to the median line of the, brick as is the case in the construction of Figures 2 and 3.

Referring now to Figure 1, which may be taken as showing the checkerwork made with either the brick of Figures 2 and 3 or the brick of Figures- 4 and'5, it will be apparent that the brick are laid up in what is commonly designated a basketweave pattern. Taking the lower portion of Figure 1, which represents a lower course of brick, certain brick 31 extend horizontally in the figure, While theintermediate brick 32. are at bybrick 32. The slots H in the individual brickalso furnish vertical flues through the individual course considered.

The brick in the next course shown in the upper portion of Figure 1 are individually placed at right angles to the brick immediately below them in the course, a portion of which is shown 'in the lower part of Figure 1. Consequently the superposed central portions of the slots ll form continuous flues from the top to. the bottom of the checkerwork. The cutaway or flared portions of the form of v v 'tional thickness as the slot 4i.

the area varying from that of the flared portions i4 plus the intermediate portion of the slot ii to the full area oi-the slot ii at the central horizontal plane of each brick It will be apparent from an examination of Figure 1 that in this form of construction, due to the relative widths of the end walls I! and side walls II, there is no lateral transfer between the flues formed by the slots ii and similar adjacent flues, nor is there any transfer between such flues and the square flues 33 formed between the brick.

The form of brick shown in Figure 7 difl'ers from that previously described, in that the length of the brick is greater relative to its width. This brick is not provided with any flared portions of its central slots 4i. walls 43 are preferably of the same cross-sec- A preferred method of laying up this brickis shown in Figure 6. Thesebrick are also laid up. in checkerangles to each other in the same manner as the brick of'Figure 1.- Thevertical flues 44 between the brick are larger in proportionto the brick than the similar flues 33 of the construction oi Figure 1. This form of brick and this method of construction as shown in Figure 6-, however, differ from the construction of Figure 1 in that here there is a cross transfer or gases between adjacent flues extending through the brick of the checkerwork. 'I'his will be apparent from a con- The end walls 41 and side work designed withalternate bricks at right brick in a course being placed at right angles to each other to provide vertical passages between sideration of the upper portion oi Figure 6. The

flue ll of a brick in the upper course of Figure 6 extends over the central portion of the flue designated by I I of the next lower course of brick. immediately undemeath the brick designated as 45. Due to the length and narrowness of the brick, however, the flue ll alsoextends over the ends Ila and 1 lb of the slots I Lin the two bricks whose ends abut the center of the brick immediately below the brick 45. Consequently there is a constant interchange of gas between adjacent flues which increases the turbulence and the heat transfer as the gases pass upwardly or downwardly through the flues.

While I have shown certain preferred embodiments of my invention in the accompanying drawing, it will be understood that the shapes and'proportions may be modifled to meet difl'er "ing conditions and requirements and so aflord different proportioned areas of dues between and within the brick. I contemplate, therefore, such modifications as come within the spirit and scope of the appended claims.

What is claimed is: *1. 'Checkerwork construction comprising a plu-" rality of, courses of brick, the individual brick having elongated slots extending vertically therethrough, superposed-brick in successive courses being placed at right angles to ,each other with central portions of the elongated slots in alignment to form continuous vertical flues.

2. Checkerwork construction comprising a plurality of courses of brick, the individual brick having elongated slots extending vertically therethrough, superposed brick in successive courses being placed at rightangles to each other with central portions of the elongated slots in alignment to term continuous vertical flues, the brick tending vertically therethrough, the alternate having the aligned portions of the slots flared outwardly adjacent the upper and lower faces of the brick.

3. Checkerwork construction comprising a plurality of courses of brick, the individual brick having elongated slots extending vertically therethrough, superposed brick in successive courses being placed at right angles to each other with central portions of the elongated slots in alignment to form continuous vertical flues, the brick having the aligned portions of the slots flared outwardly adjacent the upper and lower faces of the brick, the flared portions being substantially equal in length to the width of the slot in the adjacent brick.'

4. pheckerwork construction comprising a plurality oi courses of horizontally elongated brick, the individual brick having elongated slots extending vertically therethrough, the alternate brick in a course being placed at right angles to each other to provide vertical passages between the brick, the brick in superposed courses being located with portions of the slots in registration to provide vertical passages through the brick.

5. Checkerwork construction comprising a pinrality .01 courses of horizontally elongated brick, the individual brick having elongated slots extending vertically therethrough, the alternate the brick, and successive courses being placed with the vertically adjacent brick at right angles to each other with the central portions of the elongated slots in alignment with each other to a form vertical flues.

8. Checkerwork construction comprising a plurality of courses of horizontally elongated brick, the individual brick having elongated slots extending verticallytherethrough, the alternate brick in a course being placed at right angles to.

each other to provide vertical passages between the brick, and successive courses being placed with the vertically adjacent brick at right angles to each other with the central portions of the elongated slots in alignment with each other to form vertical flues, the brick having the aligned central portions of the slots flared outwardly adjacent their upper and lower faces.

7. Checkerwork construction comprising a plurality of courses of horizontally elongated brick, the individual brick having elongated slots exbrick in a course being placed at right angles to each other to provide vertical passages between the brick, the brick in superposed course; being located with portions oi the slots in registration to provide vertical passages through the. brick,

the brick being so sized and shaped that the vertical passages between the brick are square in cross section. a I

8. Checkerwork construction comprising a plurality of courses of horizontally elongated brick,

the individual brick". having elongated slots ex-' tending vertically therethrough, the alternate brick in a course being placed at right angles to each other to provide vertical p ssages between the brick, and successive courses being placedwith the vertically adjacent'brick at right angles to each other with the central portions of the elongated slots in alignment with each other to form vertical flues, the end. portions of the slot in each brick overlying the end portions of the slots of other bricks in vertically adjacent courses.

. ssawm P. may.

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