US1325753A - Grate for stoves and furnaces - Google Patents

Description

J. REIF.

GRATE FOR STOVES AND FURNACES. APPLICATION FILED DEC.I6, 191s.

Patented Dec. 23, 1919.

2 SHEETS-SHEET 1.'

1. REIF.

GRATE FOR STOVES AND FURNACES.

APPLICATION FILED mzc. Is, 1916.

L88 Patented Dec. 23,1919.

2 SHEETS-SHEET 2- hilt JOSEPH REIF, OF I-IEBRON', INDIANA.

GRATE FOR STOVES AND FURNACES.

Application filed December 16, 1916.

To all whom it may COIH'c/Tt:

Be 1t known that I, .losnrn REIF, a cltlzen of the United States. residing at Hebron, in

the county of Porter and State of llndiana, have invented certain new and useful Improvements in Grates for Stoves and Furnaces, of which I do declare the following to be a full, clear, and exact description, reference being had to the accon'ipanying drawheat therefrom and whereby the danger of the. formation of clinkers and arches in the fuel shall be avoided. The invention consists in the features of novelty hereinafter described, illustrated in the accompanying drawings andparticularly pointed out in the claims at the end of this specification.

Figure 1 is a view in central vertical sec tion through the lower part of a stove having my improved grate applied thereto. "Fig. 2 is a plan view of the grate shown in Fig. 1, the bowl or firepot of the stove being shown in horizontal section. Fig. 3 is an inverted plan view of the upper member of my improved grate. Fig. 4 "is a plan view of the lower member of the grate. Fig. 5 is a detail perspective View of one of the cleaning bars or arms with which the upper member of the grate is preferably provided.

A designates the lower portion of'the firepot or bowl of a heating stove having my invention applied thereto. As my invention is applicable to a great variety of stove bodies, the details of any particular form of stove need not be illustrated. As shown, the body A of the stove is provided with inwardly projecting lugs 0. adapted to support my improved grate, the upper faces of these lugs being preferably recessed to form seats 0; to receive lugs 72 that are formed on the lower member B of the grate.

The lower member B of the grate, as most clearly shown in Fig. 4 of the drawings, is preferably formed as a skeleton frame the peripheral portion of which is provided with arms forming the spaces 11 between them. Certain of the arms 10 are shown'as provided with lugs 21 to set within the seat a on the lugs a projecting inwardly beneath Specification of Letters Patent.

Patented ee. 23., 1919..

Serial No. 137,287.

the bowl or firepot A. On the upper face of the lower member B of the grate is formed a groove or race 12 to receive an antifriction ball 13, and at the ends of the groove or race 12 are formed the upstanding lugs 14: that cooperate with corresponding lugs on the upper member G of the grate, in limiting the oscillating movement of said upper member, as will hereinafter more fully'appear. From the center of the member B rises a pivot stud or pintle 15 that sets within a socket 18 formed in the central depending boss 19 of the upper member C. As shown, the upper end of the stud or pintle 15 is slightly conical and preferably, also, the seat or socket 18 is of similar shape but somewhat larger at its base than the pintle 15 so as to insure an easy oscillation of the upper member C. Upon the under side of the upper member C (see Fig. 3) is formed a groove or ball race 20' to receive the anti-friction ball 13 and adjacent the ends of this ball race are formed depending lugs 21 adapted to engage with the upstanding lugs 14 (see Fig. 4) on the upper surface of the member B, to limit the oscillating movement of the grate.

The upper surface of the member 0, in the preferred form of my invention, is conical, inclining downwardly from the center to the periphery of said member C and the peripheral portion of the member C is provided with a series of arms 25 in any de sired number, with spaces 26 between them, the arms 25 and the spaces 26 corresponding preferably in number and arrangement to the arms 10 and spaces 11 in the lower member 13 of the grate. In order to enable the upper member C of the grate to be oscillated, one of the arms 25 is preferably formed with an extension 27 having a suit able opening 28 therein to receive a shaker bar. Preferably, the underside of the arms 25 are formed with strengthening ribs 29 that brace against the depending annular peripheral flange 30 of the member C.

In the preferred embodiment of my invention, the peripheral portion of-the member C is provided with upstanding cleaner bars D adapted to prevent the accumulation of ashes, clinkers, or the like, adjacent the wall of the bowl A of the stove or furnace, and as these cleaner bars are subjected to great heat as well as friction, I prefer to removably connect them withthe member C so that they may berenewed from time to the upper member C are formed with holes 32 adapted to receive the lugs 33 formed at the lower ends of the cleaner bars D, the

'lowerportions of these cleaner bars D being expanded to form shoulders 34: that rest upon the upper surfaces of the arms 25 when the lugs 33 are passed through the holes 32 and are interlocked with the under surface of the arms 25, as clearly shown in Fig. 1 of the drawings. Inasmuch as the pressure of the fuel is outwardly toward the wall of the bowl or firepot A, the weight of the fuel will tend to maintain the inwardly project-' ing ends of the lugs 33 in interlocking engagement with the arms 25 and the upper portions of the bars D in proximity to the inner surface of the bowl A. WVhen it'is desired to replace the cleaner bars D they can be readily removed from engagement with the arms 25 of the member C.

In the preferred form of my invention, the lower member B of the grate is somewhat smaller in diameter than the adjacent part of the bowl A of the stove so as to leave an annular space between the bowl A and the ends of the arms 10 of the member 13, and it is for this reason that the inwardly projecting lugs a are provided, in preference to the usual annular flange that is commonly' employed for supporting the grate bars of ordinary construction.

From the foregoing description it will be seen that when the fuel is piled upon the top of the member 0 and the fire has been started, the draft will pass upwardly around the peripheral portion of the grate and in proximity to the wall of the bowl or firepot A. With grates of ordinary construction in which the draft is admitted uniformly through the grate bars from center to periphery of the grate, it is found in practice that the greatest heat is generated in the central portion of the fuel, whereas with my invention, the greatest heat is generated in that portion of the fuel immediately next to the wall of the bowl or firepot A where the burning of the fuel is most effectively and economically utilized. The conical form of the upper member 0 serves to cause the ashes to deliver toward the periphery of the grate, whence they pass through the spaces between the arms of the upper and lower members of the grate when the upper member is oscillated or shaken through the medium of its outwardly projecting arm 27 As the upper member C is oscillated, the upstanding cleaner bars D serve not only to agitate the fuel but also to prevent the accumulation of ashes, clinkers, or the like, adjacent the wall of the firepot or bowl A and avoid any bridging or arching of the fuel, as so often occurs with other types of grates.

My object in employing an anti-friction ball or roller between the front portions of the lower and upper members B and C is to enable an easier oscillation of the upper' ber provided with a series of peripheral openings and an upper member having a conical central portion and revolubly mounted wlth respect to said lower member, said upper member being provided with a series of peripheral openings extending above the openings of said lower member and with a series of upstanding cleaner bars adjacent its periphery for agitating the ash as it moves down the conical portion of said upper member to the peripheral openings thereof.

2. A fire grate comprising a lower member provided with a series of peripheral openings and having a central vertical stud and an upper member formed with an imperforate central conical portion having a socket on its under side to receive said stud, said upper member being provided at its periphery with radial openings extending above the openings of said lower member and having a series of holes adjacent its pe riphery, and a series of upstanding cleaner bars provided at their lower ends with lugs to enter said holes of said upper member.

JOSEPH REIF.

Images