US2510901A - Chimney top - Google Patents

Description

June 6, 1950 R. B. PARKER -CHIMNEY TOP Filed May 17, 1947 A FIG. 2 FIG. 3

INVENTOR ROBERT B. PARKER BY .Mfifi/ ATTOR NEY Patented June 6, 1950 UNITED STATES PATENT OFFICE CHIMNEY TOP Robert B. Parker, Clayton, Mo.

Application May 17, 1947, Serial No. 748,687

1 Claim.

This invention relates to chimney tops, and has for its principal object the forming of such a device that will increase the force of the draft and thus assist in drawing smoke and gases from the chimney by induction, and at the same time prevent backdraft of air in the chimney. An advantage of the invention is that it produces the same eifect as a taller chimney, and consequently permits reducing the height of the chimney without sacrificing the force of the draft. This is of special interest in the construction of dwelling houses and the like, where the appearance is an important factor and a tall, unsightly chimney detracts from the beauty of the roof.

Still further advantages of my new chimney top are that it permits a free circulation of air around the inside pipe within the chimney, and provides means for draining oil rainwater or an accumulation of ice or snow.

In the drawings- Fig. 1 is a top plan view of my chimney top in position on a chimney.

Fig. 2 is a side elevation of the chimney top in position on the chimney.

Fig. 3 is a cross-sectional view taken on line 3-3, Fig. 1, showing the inside pipe of my chimney top.

The invention comprises a circular base I which is secured, preferably by cementing, to the upper portion of a chimney A, the base having a plurality of outward extensions 2 to provide additional surface for cementing it to the chimney. From the base I a circular tile 3 extends upwardly. In its lowermost portion and adjacent the base I the tile 3 has a plurality of vents 4. As shown particularly in Fig. 2, the outer surface of the tile 3 is ornamented, as indicated generally by the reference character B, but this ornamentation may take any fanciful form and is not a part of the present invention.

A pipe 5 of frustro-conical shape is positioned within the tile 3 and seated upon the base I, and said pipe at its lower extremity has an outwardly extending, horizontal flange 6 which rests upon the base I, and bolts 1 are passed through said flange and into the base to secure the pipe 5 rigidly to said base I. A conical top 8 is positioned above the pipe 5 and spaced therefrom, as shown at 9, and this top is held in position by a plurality of connecting strips I which are secured at their opposite ends respectively to the conical top 8 and to the pipe 5, as shown in Fig. 3. At its lower edge the conical top 8 has an outwardly extending flange II, which is preferably, though not necessarily, slightly upturned. The combined height of the pipe and the conical top 8 is somewhat less than the height of the tile 3, as will be observed from Fig. 3.

The device operates as follows:

Suppose a substantially lateral wind enters the tile 3 and strikes against the conical top 8. The

flange II serves to deflect such wind so that, instead of its taking a downward direction into the pipe 5, it will swirl around the top 8 and out at the open top of the tile 3, thus creating a vacuum in the upper portion of said tile, and smoke and gases from the chimney will escape through the open space 9 into such vacuum, where they will be carried away by the wind, which, as will be understood from the foregoing, has given additional force to the upward draft from the chimney. However, should any of the wind fail to be deflected by the flange I I and blow down between the pipe 5 and the Wall of the tile 3, it will be discharged through the vents 4 in the lower portion of the tile 3. Wind entering the vents 4 will be directed upwardly by the flange 6 of the pipe 5 and should carry up with it any wind which has blown down into the tile, and escaping at the top of the tile will also help to create a vacuum in the upper portion thereof, which, as explained before, will serve to permit smoke and gases from the chimney to escape through the opening ll.

When it rains, should water enter at the open top of the tile, instead of accumulating around the pipe 5 it will flow out through the vents 4, which will also act to relieve accumulation of ice or snow at that point.

I claim:

A chimney top comprising a cylindrical outer member having an inwardly extending base mounted on a chimney, and a frustro-conical inner member surrounded by said outer member and mounted on said base, a cone-shaped element positioned above said frustro-conical member and spaced away therefrom, connecting strips between said cone-shaped element and said frustro-conical member, and a flange at the lower edge of said cone-shaped element to direct wind entering said outer member so as to prevent its entering said inner member, and said outer member being provided with vents in its lower portion.

ROBERT B. PARKER.

REFERENCE S CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 205,141 Rossman June 18, 1878 256,194 Blackman Apr. 11, 1882 612,638 Blum Oct. 18, 1898 744,570 Le Beau Nov. 17, 1903 FOREIGN PATENTS Number Country Date 2'75 Great Britain 1867 5,261 Great Britain 1898 14,126 Great Britain 1886 18,142 Great Britain 1910 537,677 France Mar. 8, .1922

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