US252213A - harris - Google Patents

Description

(No Model.)

W. H.-HARRIS & G. FARR. STEAM BOILER FOR LOGOMOTIVES.

N0.252.213. Patented Jan. 10,1882.

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.WILLIAM H. HARRIS, OEBROOKLYN, AND GEORGE FARR, OF NEW YORK, N. Y

STEAM-BOILER FOR LOCOMOTIVES.

SPECIFICATION forming part of Letters Patent N 0. 252,213, dated January 10, 1882.

Application filed December 7, 1am. (No model.)

To all whom it may concern Be .it known that we, WM. H. HARRIS, of Brooklyn, Kings county, and GEORGE FARR, of NewsYork, in the county of New York and State of NewtYork, have invented certain new and -usefulImprovements in Steam-Boilers for-Locomotive and other Engines; and we do hereby This invention relates to iinprovementsin boilers for locomotive and other engines.

The object of the invention is a more economic consumption of fuel, the avoidance of smoke, a more rapid generation of steam, and the absence of sediment and scale in the boiler and on the boiler'plates, the prevention of foaming or priming, the heating of the feed-water preparatory to its introduction into the boiler, and'the rapid and constant circulation thereof.

Before proceeding further to describe our invention we may state that heretofore many attempts have been made to produce these results by various means, such as feeding heated water, coking of fuel, separating devices for steam and water, and circulating-plates with blow-01f and other contrivances, all of which have been more or less successful. We are not, however, aware that themeans we employ have ever before been combined and arranged in such manner to produce such beneficial resultsas will hereinafter be described by such a simple and inexpensive manner. We therefore lay no claim to any of those referred to,

as they do not answer our purpose.

.Referring more particularly to theaccompanying drawings, Figure 1 illustrates a vertical longitudinal section of our boiler witha portion of the steam-dome broken away; Fig. 2, s

a vertical transverse section on the line or w of Fig. 1. Fig. 3 is a detached view of ounimprored steam-dome with its steam-separators.

lodgment of sediment where it usually'accumulates, and thus the formation of scale is prevented. We may here remark that the effect of this deposit'or incrustation on the heating-surfaces is that inproportion to the amount of solid matter accumulated, combined with its non-conducting property, so will the evapora tion of water be retarded and the relative plates exposed to the action of the flame be burned, so that two evils come from the same cause-viz, the burning of the boiler-plate and the poor evaporation of steam. Therefore, to remedy this defect is the object of the first feature of our invention.

It further consists in the combination and arrangement of means for introducing the proper supply of heated air in such points as will'causecomplete commingling and admixture of the gasesevolved from the fuel in the combustion-chamber, by which means the heat and flame are retarded in their passages, and by such min glin g and retardation the said gases are entirely consumed, forming a clear, pure, and fierce heat, therebyavoiding smoke, and producing an. economyin fuel. The heat thus produced is made to impinge on the generating-surface of the boiler, which surface, being and also in means for precipitating the sediment and other foreign matter usually carried along with the feed-water into the boiler, and also in means for blowing off said sedimentary deposits before they have time to fasten in the form of incrustation on the sides of the heating-suriace. V

a It further consists in separating device's located within the boiler and the steam-dome, wherebyithe water, when foaming,is prevented from' entering the steam-supplypipe, and thus dry clean steam isfurnished to the engine, all of which will be further hereinafterdescribed.

A is the boiler, and B the fire-box thereof. 0 is apeudent partition, straight on top and slightly arched at the bottom. As is not usual, this partition is entirely independent of the boiler crown-sheet and may be made. to be adapted to any form of boiler. We prefer to make it independentof the boiler-plates, for the reason it can adjust itself to any irregularity of the expansion or contraction of the boiler and the boiler from it. It will be observed that a portion of the partition is fire-brick or some such substance, as seen at a; but it maybe made to conform to the shape of the crown-sheet. Should a small quantity of gases pass between the crown-sheet and the top of the partition when so constructed as last mentioned, it will do no harm. The bottom of the water-partition 0, as shown, is slightly archingfrom sideto side, the purpose being that any sediment or deposit which takes place will naturally find its way to the lowest corners, which are the coolestin the furnace, and by this means where the fire is the hottest the bottom of the partition is the cleanest, and thus less liable to burn.

On the bottom of the water-partition, as described, will be seen a perforated pipe, Gr, (see Fig.2,) with the perforations facing downward and curved in conformity with the curve ofthe partition, so that when it is required any sedimentor mud which may have accumulated can be efficiently and readily blown offthrough the mud-pipe K.

On one side of the boiler, and through the water-leg in this instance, is shown a feedwater pipe, J, which may be attached to an injector or pump in the usual way. This pipe J is passed through a thimble and communicates with and feeds the water to the partition, and on the other side of the boiler is shown anotherpipe, F,'also connected to the partition near the bottom, and extending up outside, entering the water-leg above the line of the furnace-door, so that it will be seen that the water is fed to the partition, heated in it, and then conducted to the boiler in a pure hot state, parting with all its impurities and leaving them on the bottom of the partition, from whence they are readily blown off.

Should it happen that the outside pipe, I should be in the way, a pipe, as shown in dotted lines on the inside of the partition, may be provided with good results. This pipe F can be readily inserted through a hand-hole, which could be made opposite to where the pipe would enter, and in this way we incur only one boring in the side of the water-leg.

The perforated blow oft pipe is passed through the feed-water pipe, as shown, and in this way only one hole will have to be made through the water-leg of the boiler.

Gen trail y is seen through the water-partition a pipe, 0, through which, in addition to pipe F, any steam generated in said partition-is conveyed to the boiler-space proper. Thus it will be observed that in addition to heating and purifying the feed-water we produce a large and rapid steam generating surface and a thorough circulation of the water. The boiler will last much longer on account of its being free from sediment, and foaming will be partially stopped by the purity ofthe water in the boiler. The bearing-surface of the engine will also last much longer, as no sand or grindingsurface is carried over with the steam.

Just over the partition and pipe 0 we locate an inverted dish or vessel dish-shaped (marked L,) the object being to prevent the shooting up into the steam-dome of any water that might, by agitation or otherwise, arise from the water partition, and above this dish-plate we locate a series of steam-separators or baffle plates for the still further prevention of water getting into the steam-supply pipe.

The arrows made in dotted lines denote dry steam, and the arrows in full lines show the particles of water dropping off the surface of the separating-plates.

On the tube-sheet ends of the grates \velocate our air-supply apparatus E, and we arrange it at this pointfor two reasons, first, for the protection of the tube-sheets, for it is well known that the wear and tear at this point is greater than at any other; and, second, because it forms a throat, N, between it and the'lower or bottom end of the partition, through whichthe gas must pass. The heat at this point is very intense and fully charged with combustible gases, which in the ordinary way could not be supplied with the proper supply of atmospheric air; but with our device we produce a suffieient and constant supply at the very place where it is most needed, and the air, being heated, readily unites with the said gases, when the whole is ignited and burns fiercely,producing an intense heat, entirely consuming the smoke.

It will be observed that the air is broken up into fine streams orjets, causing it to take'up and unite more freely with the gaseous products of combustion coming in contact'with it. Therefore it must be obvious that we produce perfect combustion.

The dotted lines showing a grate-bar indicate that the grate can beraised or lowered as may be required, according to the kind of fuel used.

It is evident the air apparatus can be adjusted with the grate.

Plugs or thimbles may be inserted in the ends of the tubes to protect them, and toalso control the flow of heat through the tu'besas occasion may require.

The dish-shaped vessel may be suspended by any well-known means, one of which'i's shown by the angle-irons d. Safety -valves and other well-known contrivances of steamboilers are not/shown.

Havingdescribed our invention, what we claim as new, anddesire to secure by Letters which a narrow threat is formed,'whereby the combustible gases'and air are forced to mingle and. unite for their more complete combustion, as described.

2. In a steamboiler furnace, theindependent hollowwater-partition, archedat itsbott'om', as

described, the feed-pipes, the circulating-pipe which connects the partition with the waterleg of the boiler, and the sediment blow-01f pipe, the whole combined and arranged to feed, heat, circulate, and purify the water before its introduction into the boiler, in the manner shown and set forth.

3. The combination, in a steam-boiler consisting of the pendent independent partition having an. arched bottom, as described, the feed-water and circulating pipes, the blow-off pipe, and the central com municating-pipe, with the steam and water separating devices, all

arranged to operate in the manner shown.

4. The combination, in a steam-boiler furnace, of the pendent partition, having a flat top forthereceptionof brick lining and arched bottom for the collection of sediment, and its blowoft', with an air heating and supplying device, the said partition dividing the furnace-chamber into a front and rear combustion-chamber whereby smoke and manner set forth.

5. The combination, in a boiler, of'the hollow pendent partition, connecting-pipe c, inverted-dish-shaped vessel L, separating-plates in steam-dome M, and dry-steam pipe 0, all arranged as set forth.

In testimony that we claim the foregoing as our own we affix our signatures in presence of 30 two witnesses.

WILLIAM HENRY HARRIS. GEORGE FARR. Witnesses:

G. W. BALLOGH, GEO. S. BALLOOH.

7 gases are consumed in the

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