US442967A - Steam-boiler - Google Patents

Description

(No Model.) 6 sheets-sheet v1. E. FALBS.

STEAM BOILER'.v No. 442,967. Patented Decfl,l 1890..

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Patented Dec. 16,1890.l

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No. 442,967. Patented Den. 16,1890.

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E. FALES.

STEAM BOILBR. A

No. 442,967. Patented Deo. 16, 1890..

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STEAM kBOILER.

No. 442,967.' Patented Deo. 16, 1890.

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UNITED STATES t `PATENT Trice.

EDWTARD FAITES, OF BOSTON, llIASSi/XOIIUSEITS.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent N o. 442,967,1ated December 16, 1890. Application tiled August 27, 1890. Serial No. 363,176. (No model.)

To all whom, t may concern:

Be it known that I, EDWARD FALES, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Steam-Boilers; and I do hereby declare the following to be a full, clear, and exact description of said invention, reference being had to the accompanying drawings, and to the letters of reference marked thereon,

'which form a part of this specification.

My invention relates to improvements in devices for generating steam.

rlhe object of my invention is to provide a device which will generate steam and superheat the same with much less fuel and in a shorter period of time than has heretofore been accomplished.

My invention consists in providing` the rear portion of the furnace with an adjustable damper or draft-regulator and with aV series of removable teeth or grate-bars to hold the fuel in position while the damper is being raised or lowered.

` My invention consists, further, in connecting the water chambers or compartments in which the steam is generated with a steam dome or drum, said dome or drum being arranged so that it will receive a port-ion of the waste heat from the furnace and also the radiated heat from the water-chamber. Other novel features will be described, and pointed out in the claims.

This invention is designed as an improvement on the devices shown and described and claimed in my application filed June 24, 1890, Serial No. 356,571, and in which the main features of my invention a-re claimed.

Referring to the accompanying drawings, Figure l is a perspective view of my device. Fig. 2 is a longitudinal sectional view. Fig. 3 is a top or plan view. Fig; l is an end view. Fig. 5 is a vertical sectional view. Fig. 6 is a Fig. 7 is a sectional view on the line y y of Fig. Fig. S is a sectional view showing the damper or draft-regulator and also one removable gratebar. Fig. 9 is a detached view of one of the bars. Fig. 10 is a detached viewof one of the frames of the generator and the shoes used in supporting the same.

A indicates the furnace, which is set in a erated.

suitable housing of brick-work or masonry, and is by preference of the form shown in the patents granted to me November 19, 1890, Nos. 415,626 and 415,627, in which the fuel is -fed to the point of combustion by gravity, and said fuel being supported, together with the incandescent fuel which is being burned, on a bed of ashes, the fuel being fed down by gravity, as before stated, to the point where it is consumed by removing a portion of the ashes from the lower part of the furnace or from the bottom of the ash-pit, and in the patents above named the draft is regulated bya register in the front door or by the opening of said door slightly. In the present instance I provide the-rear end of the furnace with a slide-door or damper B, which is raised and lowered by means of the screw-threaded shaft C and hand-lever D, as clearly shown in Fig. 2, and by which means the throat where the products of combustion pass through to the water-chambers is enlarged or contracted, as may be desired. The rear wall of the furnace is also provided with a series of loops or supports E to receive the movable grates or teeth F, said teeth or bars being made of suitable refractory material, such as fire-clay or plumbago, and the object of which is to prevent the fuel from falling forward into the throat of the furnace when the damper is raised.

At the bottom of and to the rear of the furnace is provided a gutter G, which communicates with the outer air through the door H and through which the ashes are removed. As, for instance, as the fuel is to be let down to the point of combustion the attendant simply pushes the ashes back from the bottom into the gutter G, and the incandescent fuel, together with the green fuel, will belowered to the point of combustion and the ashes withdrawn from the gutter through the door.

I is the throat leading from the furnace to the water-chambers, where the steam is gen- The generator is composed of the hollow base K, of any suitable size and dimensions, which communicates with the hollow columns or chambers L. The columns or chambers L are connected together by horizontal chamber M, and between the hollow columns or chambers L are arrangeda series of thin or narrow water-chambers N, the lower ends of which communicate with the base 1i while the upperends of said chambers extend upward nearly to the horizontal chamber M. There may be any desired number of these water-chambers N arranged in a line parallel with the exit-line of the products of combustion, and in the construction of these steamgenerating chambers I use a bar or bent O, as indicated in Fig. IO, which rests in the shoes l), said shoes being firmly riveted te the upper walls of the chamber K.

The shoes I), which are necessary to make this construction of boiler a practical one, are for the purpose of making a strong steamtight connection between the several chambers of the boiler and especially at the corners, where a proper joining of the walls of the chambers cannot be accomplished by other forms of construction, and hence the shoe I forms an indispensable feature of the boiler.

The metal plates which connect the outer walls of the generating-chambers N are riveted to the bars O, se as to form a complete structure, as shown in Fig. e,

R is a steam dome or super-heater, which is supported in any suitable manner above the water-chamber )I and between the walls of the waterchambers L, the upper portions of the water-chambers L being connected so as to communicate with the steam-drum R by means of the pipes S S. The steam-drum or superheater R is provided with the pipe T, whichfconveys the steam to anysuitablc point for use.

The upper portions of the generatingchambers M and N are connected to and communi cate with the upper portions of the chambers L by means oflthe pipes L', which are primarily designed to permit the air to escape from the upper portion of said chambers when the same are being iilled with waterrand which will'allow the said chambers to be always full, and in the generation of stealn a certain portion of the steam will be conducted through the pipes U to the upper portion of the chambers L, where it enters the superheater or chamber R; but the greater portion of the steam generated in the chambers N passes down and enters the chambers L' through its connection at the base.

Certain portions of the waste products of combustion pass off from the ehamberhl and surround the super-heater or drum R, which, together with the heat radiated from the chambers L and N, surround and superheat the steam in the chamber R, and thus make the furnace very effective. The waste products pass up around the chambers R and pass out te the stack XV through pipe A", while the products of combustion, which pass between the chambers N, are conducted to the stack \V through the pipe I".

The walls of the generating-Chamber--that is, the n1asonryworl-arc provided with a ilus which enters the genera-ting-chamber at each side and communicates with the pipes A B', leading tothe stack W. The object of this construction is to carry the waste products of combustion in a tortuous manner, so as to allow the water -chambers to absorb the heat, as indicated by the arrows in 0 and 7.

It will be seen that the generating-chambers N are wider at the bottom, top, and ends than they are at their central portions, as shown in Fig. 5, so as to insure a constant feed or ilow to the central portion of the said chambers where the flame is the hottest.

C indicates a supply-pipe, which feeds the water into the chamber K, while D indicates a return-pipe, through which the water of condensation is allowed to pass back into the chamber K when hot water or steam is used as a heating medium.

The generating-chambers K, L, M, and N are provided with suitable braces or stayrods E, so as to give the same a rigid body, and in this way insure great strength by distributing equally upon all parts of the boiler the strain of the stea1npressurel. The furnace provided at its rear end with an adjustable damper or draft-regulator and also with a series of vertically-arranged teeth or grate-bars, substantially as described, whereby the fuel is held in position when the damper is raised, as set forth.

2. In a device for generating steam and also for the circulation of hot water, thewater or steam chambers arranged on each side of the combustioniiue or passage-way eennected by a water or steam chamber to divide the flue or passageway longitudinally, and a superheating-chamber communicating with the water or steam chambers located between the water or steam chambers in the Hue or passageway, substantially as set forth.

3. In a device for generating steam and for circulating hot water, the vertically-arranged steam-generating chambers, a water orusteam chamber dividing the combustion flue or chamber horizontally, and dues at each side of the combustion chamber at points above and below the horizontally-dividing chamber and leading to the stack, substantially as set forth.

4. In a device for generating steam and for circulating hot water, the water or steam chambers arranged on each side of the combustiontlue or passageway, a series of narrow water or steam chambers arranged both vertically and horizontally between the main water or steam chambers, and a series of pipes forming communications between the narrow chambers and the main chambers, substantially as set forth.

5. In a steanrgenerator of the character de scribed7 the shoes for connectingthechambers with each other,substantiallyasset forth.

6. In a stealwgenerator of the character-described, a bar or bent and the shoes riveted ICO IOS

IIO

thereto for securing the Vertical and horizontal chambers to each other, substantially as set forth.

7. The method herein desorihed of genen 5 ating` steam, which consists in passing a portion of the products of combustion from a suitable furnace through a chamber, the Walls and partitions of which form steam-generating chambers which communicate With a suio perheater, and in passing the remaining portion of the products of Combustion around and in Contact with the superheating-ehamber, as set forth.

In testimony whereof I affix my signature in the presence of two subscribing Witnesses.

EDWARD FALES. Witnesses:

H. M. STERLING, ALEX. MAHON.

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