US2573436A - Chimney protecting head structure - Google Patents

Description

A. W. GRAY CHIMNEY PROTECTING HEAD STRUCTURE Oct. 30, 1951 2 SHEETS-SHEET 1 Filed June 11, 1948 4 inventor Aer/lug mG/PAr Attarney Oct. 30, 1951 w GRA 2,573,436

e 11, 1948 2 SHEETSSHEET 2' Patented Oct. 30, 1951 UNITED STATES PATENT OFFICE CHIMNEY PROTECTING HEAD STRUCTURE Arthur W. Gray, Harborside, Maine Application June 11, 1948, Serial No. 32,468

1 Claim. 1

This invention relates to improvements in chimneys and has more particular reference to a head or cap construction for preventing precipitation of moisture from the outside from contacting the inner sides of the upper portion of the chimney, where usually a considerable accumulation of soot and foreign matter take place, due to the periodic moistening of this portion of the chimney.

The principal object of the present invention is to provide a cap construction having a depending apron, spaced from the inside of the chimney, so that any moisture precipitation is caused to drop straight down the chimney and not in contact with the inner side of the chimney, .to the end that moist or wet surfaces within the chimney wont collect products of combustion, escaping upwardly through the chimney.

Another object of the invention is to provide such a guard or protector for chimneys that can be manufactured at a low cost and which can be easily set in place for permanent use.

Another object of the invention is to provide a protector of the character stated which has no moving parts and which will be foolproof in use, durable and not susceptible to the ready developments of defects.

These and various other objects and'advantages of the invention will become apparent to the reader of the following description.

In the drawing:

Figure 1 is a fragmentary top plan view showing the device located on a chimney;

Figure 2 is a fragmentary side elevational view of the chimney, showing a portion broken away to disclose the apron structure of the protector;

Figure 3 is a horizontal sectional view taken on line 33 of Figure 2, looking upwardly;

Figure 4 is a fragmentary sectional view taken on line 4-4 of Figure 1;

Figure 5 is a perspective view of the assembly;

Figure 6 is a fragmentary enlarged detailed sectional view taken on line 6-6 of Figure 4.

Referring to the drawing, it can be seen that numeral 5 denotes a conventional roof structure, while numeral 6 denotes a conventional chimney. The present invention is generally referred to by numeral 1.

The present invention includes a cap 8, in the form of a square plate having a downturned flange 9 at its perimeter for overlapping the sides of the chimney a small distance, as shown in Figures 4 and 2. This plate 8, forming the cap, has a square centrally located opening l6.

Numeral ll denotes an upwardly flaring skirt structure, the upper edge portion of which is welded or otherwise secured as at 12 to the inner edge portion of the cap plate 8.

The skirt II can be constructed of a plurality of upwardly tapering plates a, b, c and 01, each having flanged end portions l3 which overlap adjacent ends of complemental plates, so that the four plates form the skirt and are riveted or spotwelded together as at 14.

It can be seen that with the structure constructed as above described and shown in Figure 4, the cap plate 8 will support the downwardly constricting skirt II in the position shown in Figure 4, so that any precipitation of moisture down this apron at the inside, will fall from the apron, straight down the chimney and not reach the inner side of the chimney, thus moistening the inner side of the chimney, so that products of combustion will cling thereto and gradually cause obstruction and afford draughts.

It is Well settled that the accumulation of soot in chimneys is due principally to moisture first gathering on the inside of the chimney to collect foreign matter and then later on the hardened coatings, thus building up the accumulation to a point where the chimney can actually close off.

Obviously, the cap and its skirt can be constructed of copper or any other sheet metal.

While the foregoing description sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and material can be resorted to, without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

A chimney protector for conventional square chimneys comprising a cap plate for disposition atop a chimney, said plate having a centrally disposed squared opening, a dependent flange at the outer edges of said plate, and a downwardly and inwardly extending skirt afiixed to the plate at the edges of the opening therein and comprising four complementary side members, each of said side members having one of its sides bent and attached to one of its adjacent sidemembers.

ARTHUR W. GRAY.

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

UNITED STATES PATENTS Number Name Date 182,758 Hessler Oct. 3, 1876 357,017 McKenna Feb. 1, 1887 454,492 Oster June 23, 1891 490,536 Boston Jan. 24, 1893 650,026 Schoppe May 22, 1900 1,154,044 Murray Sept. 21, 1915 1,700,018 QBlflIlGhfild Jan. 22, 1929

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