US245420A - Grate for stoves and furnaces - Google Patents

Description

(No Model.)

W. E. & G. L. WALKER.

GRATE FOR .STOVES AND FURNACES. No. 245,430. Patented Aug. 9,-1881..

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' NITED T-ATES WILLIAM E. WALKER, OF TAUNTON, AND GEORGE L. WALKER, OF FALL rates.

RIVER, MASSACHUSETTS.

GRAT E FOR STOVES AND FURNACES.

SPECIFICATION forming part of Letters Patent No. 245,420, dated August 9, 1881.

Applicationfiled May 31,1881. (No model.)

To all whom it may concern Be it known that we, WILLIAM E. WALKER, of Taunton, and GEORGE L. WALKER, of Fall River, both in the county of Bristol and State of Massachusetts, have invented a certain new and useful Improvement in Grates for Stoves and Furnaces, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, forming a part of this specification, in explaining its nature, in which- Figure 1 represents the application of our invention to a cooking-stove, and is a view in section on the line a w of Fig. 2. Fig. 2 is a cross-section thereof on a line at right angles to that of Fig. 1. Fig. 3 is a perspective view of a portion of the grate enlarged, representing more fully its construction; and Fig. 4 represents a modification in construction.

It is very desirable that the bars of a grate should have movements whereby the fire may be agitated, so that ashes may be shaken therefrom and also that these bars be so supported that the grate can be tipped to dislodge ashes and cinders therefrom in the ordinary way; and also that the mechanism or bar for operating the grate be used additionally for moving the grate-bars. The movement which we prefer to give the bars is a rocking one 0 upon the longitudinal center of each bar, or upon a longitudinal axis which may not be central. This gives the fire-supporting surface of the grate an undulating movement from one end of the grate to the other, each grate-bar 5 rising at one edge of its fire-supporting surface and falling at its other edge, and vice versa, in unison with the other grate-bars.

In the drawings,A represents the grate. It consists of the frame a, which may be cast in 0 one or more pieces, as desired, and which is provided with the pivot a, which supports one end of the grate in the ordinary manner and with the bar ta which supports the other end of the gratein the ordinary way, passes through 4 5 the side plate of the stove, and has notches a upon the portion extending from the side of the stove, as shown. The grate-frame a may have additionally the end extensions, a The frame supports the series of cross bars B.

Each bar is provided with a pivot, I), at one end, which has a bearing in the side portion, a of the grate-frame, and the pivot or pivotpoint I) at the otherend, which has a bearing upon or rests upon orin a notch, 11 in the back portion, a, of the frame. Each bar also has at its rear end a downwardly-projecting arm, D which has projecting horizontally from its end a pivot, 11*, and all these pivots are connected by the bar I). The grate, with the exception of the bar If, is somewhat shorter than the space between the ledges O supporting the fire-brick, thus giving room fora longitudinal movement of the grate therein. The bar If is of about the same length as the said space. When arranged below the frame of the grate, as represented in the drawings, we provide the stops or extensions 0, projecting downwardly from the ledges 0, so that the bar is held stationary while the remainder of the grate is being moved longitudinally, and holds the pivots b in a stationary position, thereby causing the bars to have a partial movement of rotation upon their axes, and causing one edge of the fire-supporting bars to lift when the frame is moved in one direction and the other edge to be depressed, and a reversal of these positions to take place upon a reversal of the movement of the grate-frame.

The stationary bars b of coursemay occupy any desirable position in relation to the gratebars, and we do not confine ourselves to the location herein shown and described. Upon tipping the grate the bar b of course will lift with it, and therefore it must not so tightly fit between the spaces 0 or the ledges O or the fire-brick as not to move readily with the grate.

We do not confine ourselves to the described method or mode of hanging the grate-bars, but may pivot them to the frame of the grate in any other desirable way without departing from the spirit of this invention.

To operate the grate the usual lever is applied to the end of the bar a and by moving the lever to and fro the grate-bars are put in motion, as described, and by turning the bar vthe grate is tipped in the customary way.

Of course it is obvious that the construction herein shown and described is applicable for use in sifting ashes out; of a stove as well as in it, and therefore we mention that we may use the discovery as an ash-sitter simply.

In lieu of the stops 0, the bar b may be provided with a projection, c, to close into a recess, of corresponding shape, in the casing of the side of the fire-pot, the recess acting as a stop in preventing the horizontal movement of the bar; or the projection maybe upon the casing of the side and the recess in the bar. Whichever construction is used, it will be desirable to form the recess and projection V- shaped in cross-section, in order that the sides thereof may act as guides as well as stops.

Having thus fully described our invention, we claim and desire to secure by Letters Patent of the United States- 1. The combination of the grate-framed with the grate-barsB,pivoted thereto, substantially as described, and attached to or connected with the stationary bar b whereby, upon the longitudinal movement of the grate-frame, the bars are caused to partially rotate on their axes or pivots, substantially as and for the purposes described.

2. The combination, in a grate-bar, of the frame to, having the pivot a and the bar a, the grate-bars B, pivoted to the grate-frame and to the stationary bar If, all substantially as and for the purposes described.

3. The combination, in a grate-bar, of the movable frame a, the bars B, pivoted to the frame and to the bar I), the pivot a, and the bar a and the stops 0, whereby the grate-bars may be moved upon their axes by the movement of the frame a and may be tipped upon the axes of the frame with the bar I), all substantially as described.

WILLIAM E. WALKER. GEORGE L. WALKER. Witnesses to signature of W. E. Walker:

F. F. RAYMOND, 2d, W. O. FOGG. Witnesses to signature of G. L. Walker:

R. M. WINsLow, R. CAMERON.

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