US661720A - Water-tube boiler. - Google Patents

Description

No. sslj'u'.v 5 Patented mw.' I3, E500-.l

a. c. maks, 1n. WATER TUBE BOILEB.

f (Application med July 5, 1900.)

(No Modal.) i

2 Sh'eets-Shest l.

f' lo. 66-I,7.20. Pa-tenta ov.'|3, i900.

fawn. Hlclcs, mi

WATER TUBE BOILER.

A (Appumion mail .my u, 1960i) (llo lodal-. 2 Sheets-,Sheet 2.

IlNiTeb STATES'n PAT ENT Ustica.

GEORGE C. HICKS, JR., OF ST. LOUIS, MISSOURI.

WTERf-TU BE BGILER.

SPECIFICATION forming part of Letters Patent. N o. 661,720` dated November 13, 1900 Application tiled .Tidy 5,1900.

[Se it known that I, GEORGE C. HICKS, Jr., a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and usefulImprovements in Iater-'lube Boilers, of which the' following is a full, clear, and exact description, reference being,r had to the accompanyin'?,r drawings, forming part of this specification.

lily invention relates to that class ol' steamboilers in which a series of water and steam drums are utilized and banks of circulating tubes provide communication between the various drums. v

My invent-ion consists in features hereinafter fully described and claimed.

Figure I is a View in front elevation ot a boiler constructed in accordance with myhinvention. lfifg. II is a view, partly in vertical section and partly in side elevation, ot my improved boiler. Fig. III is a View in Vertical section taken on the line III III, Fig. II. Fig. IV is an enlarged vertical cross-sectional View through one of the water-drums and one of the carriages on which said drums are supported.

l and 2 designate the front and rear walls ot' the boiler-setting, and the side walls of said setting'.

t is the [ire-chamber, and 5 the tire-grate therein. i

o designates the water-drums, the ends ot' which are sented in the boiler-settingr and the lorward ends ol' which are arranged imlnediately above the tire-chamber i. 'lhe lifard ends ol,` the unter-drums are supported upon lixcd chairs 7, (sec Vitt. III and dotted lines, liie. ll,) that are held by anchor-rods S. The rearends ot' the water-drums tiate so mounted upon chairs .1 (sec Figs. II and IV) that the expansion and contraction of such drums in the heating" and cooling thereof are permitted without liability of displacementof thedrums or the water-tubes connected thereto. rlhs movement ol' the drums on expansion and contraction is [pn-ovided. l'or by carriage-blocks l1, on which the drums are mountcd, the said carriage-blocks being supported f rollers 1:3, that are guided between flanges. 0, projecting upwardly from the chairs 9. As ,the rise' and tall in thedogreeof heat within the boilerchamber occasions contraction and expansion "semi uma-1.75. tNo maar of the water-drums, the carriage-blocks ll move with said drums on the rollers l2, as will be readily understood.

\Vater is supplied to the drums (i through supply-pipes 13, to which is connected the feed-pipe lt, the supply-pipes being.: provided withsuitable valves l5. The supply-pipes 13 lead to delivery-pipes 16, (see Figs. II, III,v and IV,) that extend through the water-drums supported in suitable brackets i7.y The rear ends ot' the delivery-pipes lo are provided with perlorations 1S, (see Figs. II and IV,) through into the rear ends of the drums, from which it circulates forwardly.

lil designates a central equalizing-drum located at. a greater elevation than the waterequidistant from cach of said water-drums. 'lhis equalizing-drum is connected to each of tubes 20, the tubes preferably being composed ol two sets ollset from each other.

21 designates steam-drums located at the upper end of the boiler-chamber and connected by a balance-tube 22. Communication from the equalizing-drum l.) to the steamdrums 2l is provided by banks of steam-eirculatinj.: tubes 23, arranged in ol'set series.

2t designates return circulating-tubes leading from the steam-drums-2l to the waterdrums o, these last-named circulating-tubes being also arranged in ollsct series.

25Vdesignates the steam-dome, into which communication is provided from the steamdrum 2l by the steam-cellulitis 24'.

274 is a water-column pipe leading from the equalizilig-drum l!) vto one of the steatncol `umus 2o, said water-column pipe being provided with a suitable water-gage 2S.

y Lldesignates ballle-[mrtitionslocated above 'the cireuletting-pipes :30, between the waterdrums V and equalizing-d rum lf), and extending rearwardly from the front wall of the boiler-setting to point-s beyond the center of the length ot the drums, (see Fig. IL) so as to cause the heatand products of combustion to pass to the real-end of the boiler-chamber about said drums before ascending therein.

In the practical useof the boiler the water and steam follow the courses indicated by the approximately the full length thereof and arev which perl'orations the water inds escape.

drums l5 and on a central line approximatelyv the water-drums'li by banks ot' circulating- IOO arrows, (see Fig. IIB-JL. e., the hot water and steam circulate upwardly fromY the waterdrums 6 through the circulating-tubes 2O into the equalizing-drum 19, in which last-named drum the generation of steam is continued. The generated steam passes from the equalizing-drum 19 into the steam-drums 2l, in which last-named drums the steam is constantly balanced through the balancetube 22, while it escapes from both of the drums through the steam-columns 26 to the dome 25. The circulation of the water that has not been vaporized returns from the steam-drums 2l to the water-drums 6 through the return circulating-tubes 2i, where it is again heated and rises as before, the circulation thus going on in the manner described continuously.

The water-drums being arranged at the sides of the fire-chamber and immediately above the chamber, as shown, it will be seen that their inner surfaces receive the greatest amount of heat and .their outer surfaces the least amount. By leading the return circulating-tubes 24 directly from thesteam-dru'ms 21 tothe water-drums 6 the return water is v caused to pass outwardly in said drums in a swirling manner into the coolest portions thereof, where it readily deposits. instead of passing into the hottest inner portions of the drums, where the circulation is greatest and the deposit of sediment is most diiflcuilt.

I claim as my invention- In a water-tube boiler, the combination of la pair of'water-drums, a central equalizingdrum, circulating-.tubes leading directly from the said water-dru nis to said equalizi 11g-drum, baffle-partitions located above the circulating-tubes andv extending rearwardly to a point vbeyond the center of the length of the drums,

steamdrums located above the equalizingdrum, steam-circulating tubes leading dircctly from the equalizing-dru m to the steamdrums, return circulating-tubes leading directly from the steamdrums to the waterdrums, a balance-tube 22 connecting the steam-drums, a steam-dome 25 located transversely of the steam-drums,steam-columns xed my signature this 28th day of June, 1900. r

. GEO. C. HICKS, JR.

In presence of- E. S. KNIGHT, M. P. SMITH.

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