US1090285A - Furnace-setting. - Google Patents

Description

P. L. CROVVB.

FURNACB SETTING.

APPLICATION FILED 00T. 2s, 190e.

lPatented Mar. 17, 1914.

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P. L. CROWE. FURNAGE SETTING.

APPLICATION FILED 00T. 28, 1908. 1,090,285.

Patented Mar. 17, 1914.

.llllllllIv/Q PAUL L. CROWE, OF JERSEY CITY, NEW

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JERSEY.

FURNAGE-SETTING.

Specification of Letters Patent.

Patented Mar. 1?, 1914;.

Application filed October 28, 1908. Serial No. 459,890.

To all whom it may concern Be it known that l, PAUL L. Cnown, citizen of the United States, and resident o-f Jersey City, in the county of Hudson and State of New Jersey, have invented a certain new and useful Furnace-Setting, of which the following is a specification.

My invention relates to a furnace setting for stickers, and the object is to increase the effectiveness, simplicity and positivcness of this class of stokers, and also the capacity of the stokers.

Another object is to increase the capacity of a boiler with a furnace equipped with a stoker.

Another object is to increase the radiation of the heat by an arch setting in co-action with a stokcr frame setting.

Another object is to provide the greatest economy in setting the stoker and furnace permanently, to prevent any leakage, and excess of air along the longitudinal edges of the frame and the brick work.

Another object is to provide combined flat and crown arches in conjunction with the stokers.

Another' obj ect is to prevent the formation of clinkers upon the walls of the furnace.

Another object it to prevent the clinkers clinging to the walls at the entrance of the fuel port. v

Another object is the construction of the skewbacks for supporting arches.

Another object is to provide a combination of operative movements in a furnace with a chain grate stoker causing` an undu lating grate surface thereby producing the free burning of coking and caking coal.

Referring to the drawing: Figure 1 is a cross sectional elevation of mv double furnace and arches on line ai m, Fig. 2, looking in the direction of the arrow. Fig. 2 is a vertical sectional view on line A A Fig. 1. Fig. 3 is a plan view of Fig. 1 on line ff/ y, showing one half of the arches in full. Fig. It shows a cross sectional view of a furnace having a single arch therein, said arch viewed from outside the furnace after the front 'plate is removed looking into the furnace. Y Fig. 5 is a detached view of the travcling chain with grate bars attached showing a vertical link within the groove of a wheel and a horizontal link riding over another wheel at a lower level. Fig. 6 is a perspective front view' of the skewback. Fig. 7 is another perspective view of the back of the skewback. Fig. S `is a bottom view of the skewback.

The furnace 2 is provided Awith channel irons 23 and angle iron et, suitably positioned in the furnace and supporting cross rods on which the grooved sheaves (i, and rollers T, are placed. Over the sheaves travels the chain S, to which is attached the grate hars 9. The chain consists of verti .alflinks 10. and horizontal links 11, and when the verti-A cal links 10, travel over the sheaves (see Fig'. 5), they will be slightly higher than the horizontal links 11, or vice versa. rl`he grate bars being attached to the links of the chain will rise and fall therewith as the chain travels over the grooved sheaves (i. This motion of the bars is made evident by the fact that a bar at one end is connected to a vertical link and at the other to a horizontal link. The object accomplished by thus rocking the bars, is that coal is constantly kept loose in its travel under the arches and within the furnace.

The furnace 2 is provided with arches, single as shown in Fig. 4. or in duplication as in Figs. 1, 2 and 3. The single span in Fig. 4t is viewed from outside the front of the furnace. Fig. 1 is viewed from the iuside of furnace. The spans 12, 13 and 11tare identically alike, the central skewbaek being used for duplication of arches. The front of each of these arches is constructed horizontally flat crosswisc of furnace,which is illustrated in Fig. t viewed from above the arch and in Fig. l. Afrom below the arches. At the base of the arch and on each. side thereof is located special skcwbacks 1.9, which are constructed the full depth of the arch in one piece. These skewbac ts 19 are positioned in the wall of the furnace just inside of the front. thereof. On the inside of the fuel port at. each end under the arch 1Q, and supported by channel irons 3, are located the clinkcr blocks Q1. These blocks are constructed of iron, and they are removably positioned upon the channel irons or equivalent. supports. These blocks are shaped to conform on their upper surface to the inward slant of thc arch (see lines 24, Fig. 2). The object of these clinker blocks is to protect the wall of the furnace at these points from the heat thereof so that the life of said wall is substantially prolonged: and the nature of the iron of the blocks prevents the clinkers that naturally form in the ignition of the fuel, from adhering to said blocks, thus allowing the fuel to pass onward toward the rear free from the effects of the adhesion of clinkers. Along the side, inside of the furnace above the channel irons 3, the furnace wall is spaced away from said iron several inches designated as offsets 26, in Figs. l. These spaces are filled up with brick under the arches, but beyond. the arches, rearward, these spaces are left open for the ashes to collect therein for the purpose of protecting the side walls of the furnace from the heat thereof, and also preventing the clinkers forming t-hereon until the rear of the furnace is reached. The surface of the grate being higher than the fioo-r surface of the space between the said grate and the wall of the furnace, aids in preventing the clinkers adhering to the said walls, and also protects the upper portions of the channels 3. It will be observed that this furnace and stoker setting obtains the best result that can be accomplished to prevent the air from passing otherwise than through the fuel.

As shown in Fig. 3 which illustrates a plan of a furnace in which is mounted a plurality of stokers, the arch 12, in its construction over each stoker, and designated 153-44., is supported in the center or where the arches 13 -14E come together by a double skewback 27 (see Figs. 1-2-6-7-8), which is supported by a central clinker block 28, resting upon the central I beam 29, which in turn rests on the central standard 30 of the furnace, suitably supported within the same.

The central skewback 27 is constructed as shown in Figs. 6, 7 and 8. The front end, it will be seen, being triangular in shape; the base 32 extending inwardly about half the length of the said skewback, from this point the underside 33 thereof extends rearward on an upward incline to the rear of the skewback. The rear face 34 of the skewback block is also pyramidally shaped. Along the longitudinal surface 35, of the block the same is beveled downward and inward as shown at 36 Figs. 6-78, to the thickness of the clinker block 28 (see Fig. l). `When the two arches are brought together on the central skewback (see Fig. l), the said arches rest against the bevel longitudinal surfaces 35. The object of the bevel portions 3G, is to effect a more perfect and substantial radiation, and is removed from clinker formation. in the process of burning the fuel. To further increase the efliciency in the burning of low grades of fuel and especially the coking qualities of coal in conjunction with the uneven motion of the rocking grate surface of the bars, the arches 12B-14, are lengthened substantially by a combined extension consisting of a single span 37 (see Figs. l-3) positioned against the rear end of the shorter arches lwlt, and suitably connected forming thereby a complete three span arch. ln this furnace setting the width of the stoker is contracted sufliciently to allow the grate bars to travel between the walls of the furnace, giving sufficient space between them and the side walls above the grate surface for their 'complete protection from the adhesion of clinkers thereon. The single and double spans of the arches i2, 13 and lllare each provided in front with an angle' iron 40, which is supported by the front plate 4t2 -of the furnace, and securely held thereto by bolts or other means.

`What I claim is: Y

l. In a furnace setting, a furnace comprising front rear and side walls, said side walls provided with offsets, channel irons mounted along said side walls adjacent the osets, an I beam mounted in the center of said furnace, a central clinker block mounted on said I beam, end clinker blocks mounted on said channel irons in the front portionof said furnace, a central skewback mounted upon said central clinker block, end skewbacks mounted in said side walls of the furnace and an arch mounted in said furnace against the said end skewback in the front portion of said furnace, arches l3-lt adjoining said arch, said arches 13-14 supported by end and central skewbacks.

2. In a furnace setting a furnace comprising front, rear and side walls, said side walls being provided with offsets, channel irons mounted along said side walls adjacent the offsets, an IE beam .mounted in the center of the furnace, stands for supporting said beam, end clinker blocks mounted on the channel irons and having an upwardly inclined portion, and a central clinker block mounted on said l beam and having downwardly inclined projecting portions.

3. A furnace setting comprising front, rear and side walls said side walls having off sets, channel irons with inward anges extending along said side walls, an beam supported within said furnace, standards supporting the said beam, end clinker blocks mounted on said channel irons, having upward inclined surfaces, a central clinker block mounted on said beam, and having downward inclined surface, end skewbacks mounted in said side walls, a central skewback mounted on said central clinker block, a single arch mounted within the furnace upon the said end skewbacks, said single arch inclined upwardly, a double arch mounted within the furnace and joined to the said single arch, said double arch inclined upwardly said double arch supported in the center by the said central skewback, and at its ends by the end skewbacks.

el. In a furnace setting a furnace comprising front, rear and side walls, said side walls being provided with offsets, channel irons mounted along said side walls adjacent the oilsets, end clinker lblocks mounted on the channel irons and having an upwardly inclined portion, end skew-hacks mounted in said side walls, an arch mounted within the furnace upon said end skew-backs said arch inclined upwardly, said arch having a straight front portion, and a crowned rear portion.

5. In a -furnace setting, a furnace comprising front, rear and side walls, said side walls provided with oiisets, channel irons mounted along said side walls adjacent the offsets an arch mounted within said furnace, skew backs mounted in said side walls against which said arch rests, end clinker blocks mounted on said channel irons below the arch, said arch provided with a straight 'ront portion and a crowned rear portion.

Signed at Jersey City in the county ot' Hudson and Stato of New Jersey this 26th day of ct., A. D. 1908.

PAUL L. CROWE.

Witnesses ROBERT J. MCCABE, ANNA E. DIETZ.

Copies of this patent may Commissioner of Iatents.

Washington, D. C.

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