US293765A - Smoke-consumer - Google Patents

Description

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I SMOKE CONSUMER.- No. 293,765. Patented Feb. 19, 1884.

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V SMOKE CONSUMER.

No. 293.765 Patented P. b. 19, 1884.-

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. 'UNITED STATES PATENT OFFICE. i

THOMAS J. 'MCLAUGHLINT, OF CHICAGO, ILLINOIS.

SMOKE-CONSUMER.

SPECIFICATION form-ing part of Letters Patent No. 293,765, dated February 19, 1884.

Application filed November 19, 1883. (No model.)

vice; Figs. 4. and 5, details; and Fig. 6, aside elevation of the smoke-consuming device, with the box or case of the superheater in section.

The object of my invention relates to an improved construction and operation of the devices used for consuming the smoke, or for preventing its formation in avisible form and its nature consists in the several parts and combinations of parts hereinafter described and claimed as new.

In the drawings, A indicates a boiler; B,

' the furnace or fire-chamber; O, the grate-bars;

'D, the feeddoor; a b, the inclosing-case for the superheater; a, pipe leading to steam-space orsteam-dome; d, steam-pipe leading to coil or superheater; d, the coil or super-heater; e e, discharge pipe; f, discharge nozzles; g; supporting-frames for the superheating-coil; h, regulating-valve; i, blow-01f valve; j, airvent through the feed-door; 7c, hinged or sliding door for regulating the admission of air through the opening or openings j,- Z, ears for attaching the case a.

I have shown my device applied to an or dinary locomotive-boiler; but I propose to apply it to coal-burning boiler-furnaces, or fireboxes of boilers or steam-generators of the various constructions which are adapted to receive it, in the form shown, or in such modified form as does not affect its construction and operation in respect to any of the parts'or combinations hereinafter claimed as new.

As various forms are well known, a further description of the furnace or fire-box will not be necessary.

The superheating coil or bends of my device I usually place in a box or case, a .which is made by furnishing the end plate, Z), with suitable openings or passages for the pipe and placing it in position before building up the coil. When the coil is built up, the casea is slipped over it,.and the two parts are fastened together by suitable bolts, as shown at Fig. 6. The case is attached to the wall of the furnace by means of lugs or ears Z, through which attaching bolts are passed, the bolts being simply tapped in when the furnace is made of iron, and when it is made of masonry the bolts are provided with screws and nuts at their outer ends and bolts in the wall. The case is then placed on them and the nuts screwed down. I A V The number of coils or pipes d may be varied according to the size and to the intensity of the heat to which they are to be exposed. The number shown will ordinarily be sufficient; These, coils are put together by the use of ordinary steam-fittings. Thepipe d is usually extended through the front wall, so as to bring the regulating or blow-off valves into position for convenient use. The pipe 0 is connected with this pipe by an ordinary coupling, and is extended upward, so as to take steam from the steam chamber or dome, and the flow or amount of steam is regulated by the valve h, which valve is of ordinary construction.

double pipe, e c, which extends across the front of the furnace or f re space, and usually above the door, as shown. The inner pipe, 6, is'usually of the same size as the superheating coil, and it is provided with screw-threaded The end of the coil or superheater is connected with a holes along its length, into which the nozzles f r are screwed. The pipe 6 is placed over or around the pipe e, so as to leave a space between them, as shown in Fig. 5. This outer pipe or case is provided with holes, through which the nozzles pass, and the nozzles are screwed in after the two pipes e c are properly'put together. The pipe 6 is held in position by the nozzles, by the steam-fitting at one end, and the screw-cap shown in Fig. 3 at the opposite end. This outer pipe or jacket prevents the burning out of the steam-pipe and the burning out of the nozzles, as they are very liable to be burned out where they are screwed into the pipe. The nozzles f are small tubes which have their outer ends flattened, as shown in Fig. 4. I usually place 'them about four inches apart; but this distance may be varied according as the nozzles have greater or less capacity. The case a prevents the superhcater or coil from being burned out,

and as there is usually a slight leakage of steam from the packings there will be sufficient steam inside of the case a to prevent it from being burned out, as I have found by actual use.

I do not limit the use of my superhcater in discharge-pipes to their combination with the case a, as in some furnaces the case may be omitted; but in ordinary furnaces, and especially in those made of iron, which are subjected to a high heat, its use will be found beneficial, both for the durability and operation of the superheater.

As an additional amount of air is sometimes necessary or beneficial, I have provided the feed-doors D with openings or passages j. These passages are covered, as shown, by a hinged door or lid, 7., which is raised or lowcred on its hinges to regulate the amount of air admitted at this point; but it is evident that a sliding door with registered perforations may be used in the place of the hinged doorshown; and itis further evident thatthese passages for admitting air may be placed above or below the door; but I prefer to put thcmin the door, as they do not interfere with any other arrangement when so located, and they are easily cleaned in case of fouling, as the ends can be readily reached when they are applied to the door.

In operation, after the fire has been properly started, the valve h is turned to let on the properamount of steam, and the steam, mingling with the oxygen and hydrogen in the air of the flame-ch amber, causes complete combustion of such combustible gases as mayimproperly pass off, and sufiicient oxygen is furnished to complete thecombustion of such particles of carbon as would otherwise pass off unconsumed,or as carbonic oxide. My device thus prevents the formation of visible smoke,rather than consuming it after it is formed, it being well understood that the escaping combustible gases and carbonic oxide cannot be burned after the temperature has been reduced to a very slight extent from any cause.

By a little attention on the part of the engineer or fireman in adjusting the amount of air passing through the openings j and the steam passing through the nozzles f, perfect combustion can be maintained within the flame-chamber above the fuel, the amount of steam required or used being greater when the fuel is incandescent, while less steam and more air produces better results when fresh fuel is first applied.

V hat I claim as new, and desire to secure by Letters Patent, is

1. The pipe or tube 0', having two or more discharge'nozzles, f, in combination with the case a, and a steam-coil, d, forming thcsupcrheater, located in the interior of the fire-box, substantially as described.

2. The combination of the coil orsuperheater d, casing a, located in the interior of the firebox, discharge-pipe a c, and nozzles f, substantially as described.

3. The combination of the pipes c d and valve h with the superhcating-coil d, casing a, inclosing the coil and located in the interior of the fire-box, delivery-pipe e c, and nozzles f, substantially as described.

THOMAS J. MOLAUGHLIN.

\Vitnesscs:

O. W. BOND, ALBERT H. ADAMS.

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