US2328731A - Chimney - Google Patents

Description

Sept. 7, 1943. E. R. LOVELY CHIMNEY Filed Jan 9, 1942 li'lilzerflliavezg IN V EN TOR.

ATTORNEYS Patented Sept. 7, 1943 I MCHIMNEY A. 'Ennrn, ay, Pittsfiel d, 'Maine, assignor m James B. Barry, New York, N Y, nasalimam 9, 1942, Serial No. 426,226

e alarms. (o1; 72 94 i My-invention relates to chimneys, 'fluesan'd the like, andhas amongits objects and advantages the provision of novel means "adaptedfor association with conventionalchimneys and fines and is designed to providemore perfect combustion of the fuel with consequent conservation thereof, the reduction of up chimney heat loss through the creation of proper 'draftand the elimination of down. draft, the retention of more .heat within the chimney and therefore within ends, and in which a reducer is provided to secure additional draft regulation under conditions which require such additional control.

In the accompanying drawing:

Figure 1 is a vertical sectional View of a chimney structure illustrating my invention applied thereto;

Figure 2 is a top plan View;

Figure 3 is a sectional View taken along the line 3--3 of Figure 1;

Figure 4 is a cross sectional view of a chimney structure of the cylindrical type, as distinguished from thesquare-cornered type of Figures 1 and 2; and

Figure 5 is a vertical sectional view of a reducer or additional draft regulator incorporated in the structure of Figure 1.

In the embodiment selected for illustration, I make use of a flue tube [0 circular in cross section and provided with a plate I2 at its lower end having edge engagement with the chimney structure It to support the tube centrally therein. The lower end of the flue tube Ill projects a short distance beneath the horizontal plate I2 to provide a drip edge, as at [6. In a chimney of the square-cornered type, as in Figures 1 through 3, the plate I2 is contoured in accordance with the flue passage of the chimney structure so as to pro- .the chimney structure 14.

the cover and the upper or outer end of the flue tube. The base flange margin 24 of the cover 1 8 is riveted to aplate 26 lying on ,the end face 28 .of the chimney structure I4. The plate 26 is ,ment with right angular flangesfil comprising the upper end margin of a jacket or wall 32 bent back upon itself. The jacket 32 is positioned between the, flue tube l0 and the flue face 34 of The plate 26 and the flanges 3! are so connected as to make a tight joint.

The jacket 32 is of such cross sectional dimensions as to provide a space 38 between the flue tube In and the jacket and a space 40 between the jacket and the flue face 34. At the lower end of the jacket 32 are right angular flanges 42 riveted at 44 to the plate I2. As the plate 26 extends inwardly only to the jacket 32, the upper end of the jacket has communication with the space 48 inside the coverlB. Mortar may be applied between the plate 26 and the face 28 to secure the device to the upper end of the chimne and to provide a sealed relationship.

In operation, the flue tube It! is surrounded by the insulating air space 38, which space has communication with the space 48. The insulating air space 40 extends about the jacket 32 surrounding the flue tube l0. The hot gases must flow through the flue tube It! by reason of the plate I2. The space 40 minimizes the absorption of cold by the jacket 32. The space 38 also minimizes absorption of cold by the flue tube [0. Thus the flue tube I0 is well insulated from the cold flue or chimney structure [4. Such a construction aids in the rapid absorption and retention of heat ascending the chimney structure thereby preventing condensation and accumulation of soot, creosote and other inflammable substances which would result in "chimney structures where the heat has direct contact with the cold chimney or flue structure.

The drip edge I6 extends beneath the plate l2 to cause any moisture finding its way into the flue tube l8, either by introduction from the outside or through condensation, to fall straight down the chimney where it evaporates, thus preventing such moisture from creeping outwardly along the plate l2 to the chimney structure. Such moisture is the cause of objectionable disintegration and crumbling of chimney or flue structures. In addition, the flue tube In is of smaller diameter-than the cross sectional dimensions of the chimney flue duct so as to function as a damper or draft regulator.

In cases where additional draft regulation might be necessary, a reducer or draft regulator 50 may be inserted inthe upper end of the flue tube Ill, as in Figure 5." This reducer is of slight taper upwardly and is provided with a lower end formation 52 having snug fitting engagement with the flue tube H). .'A down-turned flange; 54 is provided at the upper'end of the reducer 50 which overlies an up-turned flange 56 on a plate 58 having a flange 6i! pressed over the down-turned portion 20 of the flue tube ID. Thus the lower end of the reducer prevents the escape of hot gasesrfjl between the reducer and the flue tube, while the plate 58 constitutes a closure between thereducer' and the outer end of the flue tube to prevent moisture from entering therebetween;

Figure 4 illustrates an installation where the chimney 62 is circular in cross section. In such a case, the plate 6 t; which corresponds to the plate l2, is circular to have close fitting engagement with the chimney structure. v

Without further-"elaboration, the foregoing will so fully illustrate my invention, that others may, i

by applying current knowledge readily adapt the same for use under various conditions of service.

I claim:

1. In a chimney, a first tube arranged axially inside the chimney but spaced therefrom, means closing the space between the lower end of said first t'ube and-the chimney, a second tube arupper end arranged to said first tube.

,frusto-conical contour with its base end attached to the first wall and its apex end attached to the first tube, said second wall providing a chamber communicating with said second chamber.

2. The invention described in claim 1 wherein said first'w'all and the upper end of said second tube are folded back upon themselves to provide a fixed connection between the two, and in which said first tube extends beneath said means to provide a drip edge, with the upper end of said first tube folded back upon the apex end. of said second Wall.

.3. 'Iheinvention described in claim 1 wherein there: is providedadraft reducer insertable in the upper end of said first. tube, said draft reducer comprising a tubular part tapering upwardly and having its lower end frictionally engaging said first tube, said tubular'part having a flange at its hang onthe upper endof ,V'ELMER R. LOVELY.

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