US1703748A - Grate - Google Patents

Description

\ Feb. 26, 1929.

H. F. PORTER GRATE Filed Feb. 15, 1928 ATTORNEY Patented Feb.Y 26,l 1929.

UNITED STATES PATENT OFFICE.

HERBERT E. PORTER, oF NEW Yoitx, N. i.'

GRATE.

Application ined February 15, 192s. semi No. 254,534.

An assemblage of this kind has many ad- Y.

vantages, some of which may be enumerated as follows:

The bar itself is strong and durable and in tilting action exert-s a leverage on the elements supported thereby which is greater than an average bar,.and, furthermore, there is less liabilityof breakage than there would be if the elements were supported centrally by a single bar.

The webs may bel narrower than a single bar so that ample space is provided for the ashes to fall through and not lodge on the bar, and, furthermore, the webs, particularly the center web, is deected or tapered so that no ashes can rest thereon.

Vith these and other objects in View, the invention consists in certain novel features of construction and combinations and arrangements of parts, which Will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings- Figure l is a view showing the bar in plan, also showing a fuel-supporting bar or element in plan, and another bar or clement in section;

Figure 2 is an end view ofFigure 1;

Figure 3 is a view in .transverse section on the line 3 3 of Figure l;

Figure 4 is a view in transverse section on the line 4-4 of Figure 1; l

Figure 5 is a fragmentary view iii section, similar to Figure 3, illustrating how one of the fuel-supporting bars oi' elements may be f retained on the grate bar when the assemblage of elements is completed on the bar.

My improved grate bar is indicated generally by the reference character A, and coniprises a central longitudinal web l integrally connected by lateral ribs 2 with Websr 3, 3. The webs 3, 3 are parallel tothe central web 1 and all'of said webs are integral with end plates 4l, said end plates having truiinioiis 5 thereon for pivotally mounting the grate bar and allowing it the required support,` and on one of said plates a depending crank arm 6 'is provided for the attachment of means to rock the bar.

While I have illustrated my improved bai' as having three longitudinal webs it is of course to be understood that I do not wishl to be limited to the specific'number but believe an arrangement of three is a preferable one. Y

The bar A is adapted to support a series of fuelsupporting bars or elements 7 Which are positioned transversely of the grate bar and are supported on all three we s of the grate bar. These elements 7 have at opposite sides spaced teeth, andthe-spaces betweenthe teeth are of approximately the same size as the teeth; and the upper portions of said bars'are slightly spaced apartso as to give a maximum of air draft and yet properly support the fuel.

My improved grate is especially adapted for supporting fine fuel and hence it is iniportant that the' fuel be prevented from passing through the grate yet it is desirable that a maximum air space be left for the draft.

The elements 7 are provided with depending tongues 8 at their ends, having enlai emeiits 9 thereon which fit under outwar ly projecting flanges 10 on the outside Webs 3 of bar 8 so as to hold the elements 7 against displacement relative to the bar. y

The elements 9, as shown most clearly in Figure l, are of such length that when they abut one against the other they properly space the elements 7, and the flanges 10 on the bar A have recesses 11 therein of a width sutlicient to accommodate the enlargements 9 of one grate element 7, so that the elements may be .inserted on the bar at this point and then moved longitudinally out of the bar until the bar has its quota of fuel-supporting elements.

The last fuel-supporting element may be equipped with a bendable tongue or linger 12, as shown in Figure 5, so as to be bent under a web 3 to hold this element on the grate bar.

I would call particular attention to the cross sectional shape of the Webs l and 3, as shown clearly in Figure 3 of the drawings.

It will be noted that the central web 1 has its y preferably'made with a slightly Wider upper surface but they too are deflected at their side portions so as to shed the ash. p

It will thus be noted that with a har of this type there is no Wide surface on which the ash may. accumulate such as is true of grate" Y7, so that when' the grate har is rocked a direct lifting action is had under the f`uel-sup porting elements 7 adjacent their ends.

Various changes and alterations might he Amade inthe general form of the parts de scribed Without departing from the inven-V tion and hence I do not limit myself to the precisey details set forth hut consider myself at liberty to make such changes and alterations as fairly fall Within the spirit and scope d of the appended claims.

I claim: i Y. v1. A gratebar, comprising three parallel Webs spaced apart, end plates integrally connecting saidrWebs, ribs integrally connecting said Webs intermediate their ends, the outer Webs having flanges thereon With recesses inpsaid flanges, fuel-supporting elements on said'wehs, tongues on the elements, and enlargements on the tongues engaging under the flanges of the outside Webs, and having entrance to said position through said recesses. Y

2. A gratel har, comprising three parallel Webs spaced apart, end plates integrally connecting'said Webs, ribs integrally connecting said Webs intermediate their ends, the outer Webs having flanges thereon with recesses in said flanges,V fuel-supporting elements on said Webs, tongues on the elements, and enlargements onthe tongues engaging under the flanges ofl the outside Wehsand having entrance to said position through said recesses, said enlargments of a length whereby When they engage each other the'elements will he spaced apart, l f

Signed at New York, in the county of New York and State of New York, this* 11th day of February A. D. 1928.'

HERBERT F. PORTER.

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