US254037A - C o n s u m e r - Google Patents

Description

(No'ModeL) 2 Sheets-Sheet 1.

C. OLSON.

SMOKE GONSUMER. f

No. 254,037. Patented Peb.21,18812.

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perform-,eters Patent No. 254,037, dated February ai, ieee'.

Application nieu 'october 2e, resi. (No model.)

To ill whom it may concern A-Be it known that I, CANUTE OLSON, a citizen of the United States, residing atV Chicago, in thccounty of Cook, in the State of Illinois, '5" have invented certain new aind useful Improvements in Smoke-Consumers, which are fully set forth in the following specication, reference being'had to the accompanying drawings, in whichv Figure 1 is a front elevation of a boiler and furnace provided with my apparatus. `Figi-2 is a partial section on the line w x in Fig.'1,'the structure being broken away back of the iirebox, and the boiler not being in section, but'v r 5V the lower front part of it being-entirely broken away. Fig-3 isa section on the lineyy in Fig. 2, only the lower left-hand quarter ofthe structure being included. Fig. 4 is a plan section on the"- line e z in Fig. 3. Fig. 5 is a detailed 2o' section on the line c c in Fig. 3, `so as to givel aplan view ofthe upper end of the steam-coil. Fig. 6 isV a perspective view of the'shoe which supports the steam-coil, and of that part offthe grate on which Ait rests.' Fig. 7 'is a front cle- 2 5 vatio'n of the cap or nozzle through which the steam is discharged. -V

The same letters denote the same parts in all the figures.

My invention relates to inea-ns foi consum- 3o ing smoke and other combustible matter which passes off unconsumed from ordinary furnaces 5 and itconsists in apparatus of special construction and arrangement for accomplishing this result by throwing an unbroken horizontal sheet of superheated steam over the ltire just above the coals. The construction, arrangement, and operation of the apparatus employed by me for this purpose will first be fully described, and the special improvements, which 4o l believe to be new and desire to secure by Letters Patent, will then he pointed out more delinitely in the claims.

In the drawings, A denotes a steam-boiler, and a its steam-dome. B denotes the furnace; b, the fire-doors 5 b', the grate-bars, and b2 the bridge. All thesemay be ofordinary construction.

C is a steam-supply pipe passing from the dome down in front of the boiler and into the 5o furnace,preferablyatoneside. The lower horizontal portion, c, which enters the furnace, is

- preferably somewhat larger than the rest. If the u'pperpart be, for example, three-eighths of an inch in diameter, I nd it advisable tov make the diameter of ythe part c half an inch. A valve, c', at any convenient point in the length of the pipe, regulates the supply of steam.v Within the furnace the pipe c is directed to a point over the nearest corner of the grate andl there enters the lower partof a steamcoil, D, which isfsupporte'd on a shoe, D', restingon the grate-bars at one side of the'grate. The shoe is secured in position by a bolt, cl', anda nntonl the under side of the grate, or by other convenientlmeans. The coil is'arranged i on lthe inner; side of the fire-box, directly over the grate, the number of turns being greater or less, according to the degree to which it is i desired to: hea-t the steam. In the construction shown 'iny the drawings", which I iind satisfactory inpractice, the'coil passes twice straight upward and once straight'downward. At the end ofthe second upward pass the pipe is carried horizontally across to the boiler, thence straight down ward a shortdistance, and thence horizontally back to the Wall at the ,corner of the fire-box, and down again to a poi-nt somewhat abovel the coals which rest on the grate andv about on a level with the point where the pipe C enters the furnace. Here it turns again into a horizontal and diagonal direction, and projecting a little beyond the rest of the coil terminates in a dat cap or nozzle, D2, (shown in deta-il in Fig. 7,) having a narrow horizontal slot, d2, extending quite across it and notching its sides to a slight depth. The object of the upper horizontalpturn, which has been described, is to brace the coil between the boiler Yand the wall.

The pipe of which thecoil is composed should be somewhat larger than that through which the steam enters it, in order to give room for the expansion of the steam. If the horizontal pipe c is half an inch in diameter, the pipe of the coil may advantageously be three-quarters of an inch. Common single pipe may be used for the coil; but double pipe will be found preferable. The steam, passing from the dome through the pipe G into the coil within the rebox, ascends and descends through the coilin the direction shown by the arrows in Fig. 2,

being all the time directly over the fire, and

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in its passage becomes superheated. It then escapes through the slot d2 and spreads in a sheet over the whole surface of the burning coals, mingling with the smoke and gases as they rise, and causing a perfect combustion of them before they can pass over the bridge.

Inasmuch as the discharging-pipe of the coil projects diagonally and but a short distance from the corner of the fire-box, it throws its sheet of steam over practically the whole surface of burning coals. Other arrangements and proportions of this pipe and of the rest of the coil would give an effect the same in kind but inferior in degree. I have shown those which I deem best; but it will be understood that I do not limit myself to them.

Instead of the coil which I have shown, an annular drum might be used with similar effect, and other modifications which do not affect the principle ofthe invention will readily suggest themselves.

The apparatus which I have described is cxtremely simple and cheap, and I have found on trial that it is perfectly efficacious. For all the intense heat to which it is subjected within the re-box a coil made of double pipe will be found to do satisfactory service; and when one coil is burned out, or nearly so, it can be removed and replaced with very little trouble and in averyshort time. The removal is thus easily accomplished, for the reason that the coil is not permanently attached to any portion of the structure, but rests loosely on the shoe D, and is held in place at its upper end loosely between the boiler and side wall of the furnace. It is simply required, therefore, to disconnect the service-pipe, when the coil may be lifted from its place and taken out through the openings of the furnace.

I am aware that many devices have heretofore been devised for throwing jets of steam into the tire-box and upon the burning fuel; but in all cases, so far as I am aware, the steam has been sprayed in, and, to greater or less extent, directed down upon the fuel. By my apparatus I avoid the direct impingement of the steam upon the fuel and the simple spraying, by both of which the steam is simply diffused among the products of combustion with little or no effect. By means of the horizontal slotted nozzle I direct an unbroken sheet of steam continuously and with force across the rising products of combustion, and thus effectually check them and cause them to be consnmed, and in this unbroken horizontal sheet, in contradistinction from the old method of spraying, the main principle of my invention consists.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The steam-heater D, in combination with the shoe D', attached to the grate-bars of the furnace, and the boiler A, between which and the furnace-wall the upper end of the heater is held, substantially as described.

2. An apparatus for consuming or preventing smoke, consisting ofa single steam holder or receiver, D, arranged within thc furnace and at one corner of the draft end thereof, and provided with a horizontal fan-jet nozzle, D2, extending diagonally from the receiver and arranged just above the bed of coals, whereby the steam is snperheated and then delivered in an unbroken horizontal sheet just over the coal-bed, but not in contact therewith, substantially as and for the purpose set forth.

3. In combination with the fire-box of la furnace, a superheater, steampipes for supplying said superheater, a discharge-pipe attached to said superheater, having a horizontally-slotted nozzle arranged a little above the grate, and adapted to discharge an unbroken and a continuous sheet of steam horizontally over practically the whole tire, substantially as described.

CANUTE OLSON.

Witnesses:

THOMAS H. Palisa, W. C. CoRLIEs.

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