US307970A

US307970A - Smoke-consuming furnace

Info

Publication number: US307970A
Authority: US
Publication date: 1884-11-11
Anticipated expiration: 1901-11-11

Description

(No Model.) 4

- G. W. MEARS.

7 SMOKE GONSUMING FURNAGE.

N0. s07,970.- Patented Nov. 11., 1884.

Ill

mg esm I .lizz/e zzfm GEORGE MEARS, OF NORYVALK, OHIO.

SMOKE-CONSUMING FURNACE.-

SPECIFICATION forming part of Letters Patent No. 307,970, dated November 11, 1884.

Application filed April 19, 1884. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE W. Means, of N orwalk, in the county of Huron and State of Ohio, have invented new and useful Improvements in Smoke-Consuming Furnaces, of which the following is a description.

The invention above alluded to is intended more especially for steam-boiler furnaces, but which, however, is applicable to furnaces used forother purposes. 4

The construction of the above-said smokeconsumer and the practical operation of the same are substantially as follows, and illustrated in the accompanying drawings, making a part of this specification, in which- Figure 1 represents a plan view of the inside of a furnace and the appliance for consuming the smoke adapted thereto. Fig. 2 is a longitudinal vertical section of the same. Figs. 3 and i are detached-sections.

Like letters of reference refer to like parts in the several views.

As shown in the drawings, A represents the body of a stea1n-b0iler furnace, which in its general structure may be like that class of furnaces in ordinaryuse. B is the fireplace, O the grate-bars, D the ash-pit, E, the crown or arch of the fire-place,-and P a section, of a steam-boiler, all of which is or may be, as above said, similar to steam-boiler furnaces in general use.

At the rear end of the furnace, and above the crown or arch E, is a hot-air chamber, G,

shut off from the fire-place by the partitionwall H and by that part of the arch at I. Through the hot-air chamber passes the end of the flue J and through the partitioirwall, and terminates in open communication with the fire-place. The flue is also in open relation with the hot-air chamber G by means of the perforations a in the end of the flue passing through the chamber, as shown in the drawings.

The foraminous end of the flue is oval in shape, as shown in Fig. 4, which represents a cross-section of the flue taken through the line x :0, and which may be continued of the same shape (or round) to the end K thereof, terminating in the stack or chimney L, which may be more or less distant from the furnace. The end K of the fine is oval and of the shape nous diaphragm, N, through which the end of the flue passes, as shown in the drawings.

Further attention will be called to this part of the flue hereinaftelx, The side wall, 0, of the furnace 'is penetrated by air-pipes 1, 2, and 3, which enter the fire-place above the arch E, as shown in Fig. 2. It will be observed that the inner ends of the air-pipes extend to and terminate in the hot-air chamber, the pipe 1 below the end of the flue J, and the pipes 2 and 3 at or near the side thereof. at is also an air-pipe piercing the wall of the furnace, and terminating in the fire-place, instead of in the hot-air chamber. The opposite wall of the furnace is in like manner pierced with air-pipes 1, 2, and 3, correspending to the air-pipes above described, and which also terminate in the chamberGin the same way. 4 is also an air-pipe corresponding to the air-pipe 4, and in like manner terminates in the fire-place, buta little nearer the front than the pipe 4, as seen in Fig. 1. Below the grate-bars is arranged an air-pipe, A, extending from the outside of the front of the ash-pit back to the rear end thereof, as shown in Fig. 2. In the rear wall of the ash-pit are perforations e, to which is applied a perforated slide or damper, cl, for opening and closing the said perforations, as maybe desired.

B is the door of the furnace, hinged thereto at 0. To said door is secured a chute or hopper, D, covering the opening E, through which coal is fed to the furnace from the chute.

F is a slide arranged vertically in the chute before the openingE, by which said opening is opened and closed for transmitting coal from the chute into the furnace.

G is a lid covering the end of the chute.

Having described the construction of the furnace and the appliance adapted thereto for consuming smoke, the practical working of the same is as follows: The hopper or chute D is supposed to be filled with coal thrown therein through the end thereof, the lid G being opened for that purpose. The coal from the chute is fed into the furnace by] raising the slide F, under the lifted end of which it passes slowly in onto the incandescent bed of coals, thereby avoiding the necessity of opening the door of the furnace for supplying it with fresh fuel, and which also prevents a rush of cold air into the furnace, which would be the case if the door were opened. As the smoke and eliminated gases pass from the bed of incandescent coals up to and over the arch E, as indicated by the arrows, they are supplied with air, to cause their combustion, by means of the pipes 4 and 4. A further supply of air is furnished to continue the consumption of the smoke and gases through the perforations to of the fine. The air for this purpose is from the hot-air chamber G, and which is in a highly-heated state, it having become so in passing through the pipes 1, 2, 3, &c.,which are heated by the furnace, so that the cold air entering the pipes from the outside becomes heated to a high degree when discharged into the chamber G, and which escapes therefrom into the flue J, through the perforations, in small jets or currents. The heated air thus broken up in passing through the perforations mingles intimately with the smoke and gases that may pass into the flue; hence results a more complete consumption of the smoke, 820. Should any remain unconsumed at this point for the want of suflicient air, a further supply is had to meet that want at the end K of the flue. The airis supplied at that point through the foraminous diaphragm N in fine jets,whieh at once commingles with the smoke and gases (should there be any issuing from the flue) and completes the consumption thereof. The smoke, &c., that may be issuing from the end K of the flue into the stack L is of a wide fan shape of no great thickness by virtue of the peculiar form of the end of the flue, so that there is an immediate and intimate commingling of the air and the smoke, for the purpose I above specified.

The object of the pipe A is to convey air to the rear end of the grates in the event the structure of the furnace is such that the airholes 6 cannot be made available for that purose.

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

1. In combination with the fire-place of a steam-boiler furnace, a hot-air chamber situate at the rear end of said furnace and above the crown or arch thereof, which has an inclined grade upward from the rear to the front of the furnace, air-pipes 1- 2 3 and air-pipes 1 2 3, respectively, penetrating the side walls of the furnace into the fire-place thereof above the arch, and extending therefrom into the hot-air chamber, in which they terminate, substantially as described, and for the purpose set forth.

2. The fine J, having its outer end contracted at b b and its inner end provided with perforations a a a and opening into the fire-box, in combination with the hot-air chamber supplied with hot air by means of the series of pipes arranged .on each side through the walls, in the manner described, and for the purpose set forth.

3. The flue J, having its upper end terminating in a slot shape opening, 0, formed by the inward-projecting sides of the end of the flue, in combination with the stack or chimney provided with a foraminous diaphragm through which the flue passes, substantially as set forth, and for the purpose specified.

4. Arranged in relation to and in combina tion with a steam-boiler furnace or fire-place thereof, the inclined arch E, air-pipes 4 and 4, terminating in said fire-place, hot-air chamber, and side pipes extending from the outside of the furnace into the fire-place, thence to the hot-air chamber, in which they terminate, flue, J, having the perforations in the end thereof in open relation with the said chamber, and the open end of the flue terminating in the fire-place of the furnace, and the upper end provided with a slot-like opening, 0, and inturned sides forming an arch on each side of said opening, stack, or chimney, having a perforated diaphragm through which the end of the flue passes, all constructed substantially as described, and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE W. MEARS.

' Witnesses J. H. BURRIDGE, THos. Y. MEARS.