US1624230A - Water grate - Google Patents

Description

April J; a. GIBSON vmina Gama Original Filed July 5. 1923 Patented Apr. 12, 1927.

UNITED STATES JOHN G. GIBSON, OF'VENTNOR, NEW JERSEY.

WATER GRATE.

Original application filed July 5, 1923, Serial No. 649.487.

This invention, generally stated, relates to steam and hot water boilers employing forced or induced draft and has more particular relation to the providing of certain new and novel sectional hollow grates therefor which may be formed integral with the water-legs of a boiler section at the time of manufacture of the boiler or which may be installed in existing boilers without effecting change in the construction thereof. Other and further objects relate to the provision of general details of construction and in the arrangement and combination of parts hereinafter set forth.

The invention consists of the novel structure hereinafter described and finally claimed.

The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof, and in which:

Fig. 1 is a top view partly sectioned of a pair of detachable grate-bars.

Fig. 2 is a view in section showing a repair element in position in lieu of the flange 17 which has broken off.

Fig. 3 is a fragmentary view illustrating the grate-bar as shown in Figs. land 2 formed integral with the water-leg of a boiler section.

For the purpose of illustrating my inven tion I have shown in the accompanying drawings one form which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described. This case is a division of application Ser. No. 649,487.

In the water-grate claimed in my Patent Number 1366,37? dated January 25, 1921, use is made of removable, tubular sections having perforated domes. In the present instance these sections may be omitted or used in certain instances and the grooves of adjacent grate-bars form tubular channels for the passage of air to the grate surface. The grooves. however, do not extend through the top of agrate-bar as shown in Bivitlcd and this application filed U'ctohcr 24,,

Serial No. 745,548.

my said patent and while the flanges at the lower end of the grooves may remain it is preferable in some cases to omit same. lVith the exception of these changes the general arrangement of grate-bar is similar to that disclosed in patent aforesaid.

Referring now to the drawings, 10 designates a grate-bar which is hollow for the circulation of water therethrough as is well understood in the art. Each side wall of a grate-bar. 10 is vertically grooved from the bottom thereof to within a short distance of the top thereof. These grooves which may be of any desired shape are spaced apart and are designated 11. The top wall of a grate-bar overhangs the glOoves 11 of a companion grate-bar throughout its extent. In other words the overhang is continuous. The opposite grooved face of each gratebar is provided with horizontally disposed, spaced ribs 12 adapted to co-actively engage with said recessed portions 13 whereby adjacent or abutting grate-bars may be interlocked. These recessed and ribbed portions form overlapping parts to preclude air seeping up between adjacent grate-bars, or in other words allair must pass up through the apertures of the ledges, to be evenly distributed, as before described. In practice cement or the like may be applied between the adjacent faces of grate-bars. The side walls 14 of each grate-bar are shaped to follow the curves of the grooves 11 so that approximately the same thickness of metal is present throughout a grate-bar to provide for uniformity of cooling surface. The thickness of the over-hung portions is of approximately the same thickness as the grate-bar. Each grate-bar is provided up on one side wall with grooves 11, above mentioned, which extend through the gratebar top in the same manner as those shown in my aforesaid patent. These grooves are recessed or countersunk at their tops as at 15. At. their bottoms each set of grooves are provided with flanged parts 16. The grate top upon that side provided with grooves 11 is provided with laterally disposed flanged parts 17 which not only over hang said grooves 11 but are further extended to seat within the recessed or countersunk parts 15 of grooves 11 of an adjacent grate-bar. These flanges 17 are semicircular, as are the recessed parts 15, and

be cast integral with a water-leg 19 of a boiler, as shown in Fig. 0.

It will now be :zppa out that l have devised a novel and us ll construe" n which embodies the 2 enumerteaturer: of advent: ated as desirable in the statement of the invention and the above dz .on and while I have in the present i. ce ash wn and described the preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it is to be understood that the same is suseptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing! any of its advantages.

lvhat I claim is:

'l. In a grate constructimi of the character stated a plurality of hollow grate-bars arranged side by side the meeting faces o'l' said grrale-bars being); provided with registering, vertical grooves cooperating to provide air ducts, the top wall of a grate-bar adjacent one set of grooves being recessed and bevoiled and the top wall thereof overlying the opposed set or grooves and flanged to seat within the recessed part of a companion grate-bar, the flanged part being; bevelled and apertured in communication with regis tering grooves.

2. In a grate coi'ist-ruction of the character stated a plurality vol' hollow grate-bars urranged side by side, the meeting -faces of said grate-bars being provided with rcgis tering, vertical grooves cooperating to pro vide air ducts, the top wall upon one slice 0'? a grate-bar overlyingone set of grooves and having: a plurality of (at :Jersunk bevelled spaced portions and the top wall of the op posite side of the grate her being; provided with a plur lity ot' lly extended spaced flanges shaped to seat with said rountersunlr portions of a companion gratobar, said flanged parts being apertured in eonnnunication with said registering grooves.

3. In a grate construction of the character stated a plurality of hollow grate-bars arranged side by side. the meeting: faces of said gratebars being provided with registoring vertical grooves cooperating to form air duets, the top wall of a gratobar adjacent one set of grooves being formed upon an are of c'rele and recessed and the top wall thereot overlying the opposed of grooves and flanged upon an arr oi a circle to seat within the recessed part of a companion rte-bar, the flanged part being apertured in comnumication with registering grooves one side wall of each grate-bar being horizontally recessed and the opposite side wall being ribbed for engaging a recessed wall of a companion gratebar.

In testimony whereof,

signed my name. T v

JOHN G. GIBSON.

I have hereunto

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