US468958A - Stove or range grate - Google Patents

Description

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W. M. SHORES. STOVE 0R RANGE GRATB.

188488958. y Patented Feb. 18, 1892.

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VILLAM MILES SHORES, OF TOVANDA, PENNSYLVANIA.

STOVE OR RANGE GRATE.

SPECIFICATION forming'- part of Letters Patent No. 468,958, dated February 16, 1892.. Application med :rune 11, 1891. stanno. 395,858. cromada.)

To all whom it may coacern.-

Beit known that I, WILLIAM MILES SHoREs, a citizen of the United States, residing at Towanda, in the county of Bradford and State of Pennsylvania, have invented certain new and useful Improvements in Stove or Range Grates; and I do declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification. A

My invention relates to improvements in that class of grates for stoves or ranges in which a raising or lowering mechanism is employed to elevate or lower the grate and set the same at the desired point for the purpose of bringing the ignited fuel nearer to or farther from the top plate of the stove or range, and thus regulate the heat and control the consumption of fuel.

My improvements consist in combining with the stove frame or casin g grate-bars j ournaled in sliding end plates provided with rack-bars,

and which plates are inclosed between the firebox and outside casing of the stove or range, so as to better protect the same from the ashes and effects of the heat, and these, in connection with other features, to operate the grate with great ease and facility, as more particularly hereinafter described and claimed.

My improvements are illustrated in the accompanying drawings, in which- Figure l is a transverse partly sectional View in elevation of one outer end ofv a stove with the outer casing removed to show the position and operation of the lifting mechanism; Fig. 2, an inside plan view showing position of grate, with relation to lifting apparatus; Fig. 3, an inside end View, in elevation and partlyin section,showing connection of dumping-grates with lifting-rack plates and inside end of tire-box frame-work; Fig. 4, an outside end view opposite to that of Fig. 1, with outside end casing removed to show connection of grate, turning-gear, and the lifting-rack and pinion; Fig. 5, a vertical section of operating-shaft and its connections and support- Ying-frame; Fig. 6, a transverse sectional view on line z z of Fig. 2; Fig. 7, a similar View on line y y of Fig. 2; Fig. .8, a similar view B B and E and E are respectively the side and end linings of the fire-box.

I J are respectively opposite slidingend plates placed between the lining E E of the lire-box and the outer casing of the stove and in which are journaled the double rotating grates G. The short journal-shafts a a and ol CZ', supporting the grates, extend through plates E J and E I, respectively, and have a vertical movement in slots h, cut in each of the inside end plates of the fire-box. The grates in their Vertical movement thus carry with them the plates IJ. The journal-shafts a and a carry the cogs F F. One of the journals d terminates in a small square shaft and is adapted to receive a crank or wrench for turning the grates and cogs F F, whereby the grates are rotated in opposite directions.

I2 J 2 are racks cast, respectively, to the opposite end sliding plates I J and adapted to engage with the pinions I-I II', mounted, respectively, on the opposite ends of a rocking shaft K. By means of these racks, pinions, and shaft the grates are given their vertical movement. For this purpose the shaft-extends through the casing and a crank K is employed to turn it, and which crank may be used to both turn the grates and to raise them.

VThe shaft K is mounted in a removable cast frame X, having side pieces N N and end pieces O O set in the casing below the irebox lining, and as indicated in Figs. 5, 7, and 8. g

L is a weighted pawl pivoted to one of the end plates I, operated by gravity, and its end m, adapted to engage with and hold the pinion H and consequently rack-bars in the position raised.

It will be noticed that the end linings of the lire-box are not only slotted, lout are also IOO beveled inwardly to an edge, which construction permits' the grates to be moved up and down easily without interference with the contents of the fire-box.

Although not confined to the particular form of grate herein shown, as other grates may be used, yet my improvements are peculiarly adapted to be used with advantage with a duplex rotary grate of a well'known form, adapted when turned in one direction to lower and be used for the burning of coal, and when turned in the opposite direction to be raised higher and then used in burning wood, and by which rotary movement the grate is easily cleaned of ashes and clinkers. (Elinkers are also prevented from forming at the sides and ends of the grate by the use of the elevating mechanism.

The inside faces of the sliding end platesI and J are made perfectly smooth, so as to fit snugly and smoothly against the smooth inside faces of plates E and E of fre-boX, which construction, together with the inwardly-beveled edges of the slots in E and E', prevent all ashes and Iine coal gettin g between said plates and iire-looX.l On the back of plate I the rack I2 is composed of a raised portion of the plate, and I is another raised portion to raise the plate I ilush with the rack and give a thicker bearing for the journal-shaft of grate. The

Having thus described my invention, what I claim is- I. The combination of sliding end plates carrying racls,gratebars journaled in the said plates, a fire-box having removable end linings with slots, the edges of which are beveled inwardly and through which the shaft-s of grate extend to the said sliding plates, and a shaft with pinions attached thereto for operating said racks,-substantially as described.

2. In a grate, the combination, with the sliding end plates, removable frame X, the rotating shaft mountedin the end pieces of said frame, provided with a pinion on each end to engage said plates, and the weighted pawl pivoted in a recess at one end of casing and adapted to engage with and hold one of saidl shaft-pinions, of a duplex rotary grate mounted in said sliding end pieces, having at one end intermeshing cog-Wheels, substantially as described.

In testimony whereof I attix my signature in presence of two witnesses.

VILLIAM MILES SIAIORES. Witnesses:

T. R. MCAFEE, GEO. V. MYER.-

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