US100205A - Improvement in furnaces - Google Patents

Description

I waited tatra THOMAS S. vSPEltKlitIAN, OF OAMDEN, NEW JERSEY.

Letters Patent No. 100,205, dated February 2, 1870.

IMPROEMENT IN rURNACEs.

The Schedule referred to in these Letters Patent and making pax-t o! the same.

To all whom it may concern:

Be' it known that I, THOMAS S. SPEAKMAN, of the city and county lot' Camden, in the State ot" New Jersey, have invented a new and improved Met-bod of Preventing the Gene-ration of Smoke incident to Gombastion; and I do hereby declare the following to be a full and correctdescription of vthe same, sutiicient to enable others skilled in the class to which my invention appertains to fully understand and apply the same, reference being had to the accompanying drawiulgslwhich make part ot' this specitication, and in w nc 1- Figure 1 is a sectional vie-w of a. boiler with which achimney is used with my ilnprovelnent'attached, and

Figure 2 is a similar yiew of a boiler uscd without a chimney, also provided with my improvement.

Like letters of reference indicate like parts in both figures., y

My invention consists in the arrangement of a downwardly-bent pipe for the. exit of the carbonio arid and othell saturated gases, unconnected with the fire-place or tbeiim-case. which lattercreatesan artiticial draught.

A, in the drawings, represents the boiler of an engine resting ou the bed B, the tine C, under the boiler, ending in the chimneyl).

E is the tire-place, under which the ash-pit Fis Situated.

A pipe', G, leads a blast from the fan H to just under the iireplace, the fan being situated in any suitable position, and being operated' by a belt lrom any convenient part ot' the engine.

A'lhe pipe G is provided with a damper", I, to regulate the blast l'rom the fan.

The top ot' thechimney D is provided with a suitable damper, which can be regulated from below by means ot' a rope, wire, or other suitable means. 1n the drawings l have shown a hinged damper, but any well-known hind of damper will answer the same purpose.

Erom a suitable distance above the boiler a tube, J, extends out and downward fronrthe chimney .D to a suitable distance from the boiler.

In iig. 21 have shown my improvement applied to an engine in which no chimney is used. Intbis case the iiue C extends into a tube, K, which latter is bent upward and downward, as shown in the drawings.

I surround this tube K by a barrel, L, iu which the tube K may be placed in close coils, it' desirable,iits end extending through the end ot` the barrel.

rlhis barrel is to be iilled with water, which will be heated to a certain degree by the tube K, and may be used as feed-water for the boiler, saving fuel, as it is already heated. A

The operation of my device is as follows:

1n starting the fire a few t-urus by hand. ofthefan `Will make a goed Vfue in one-halt' the time it could be done without it. 'lhc damper on chimneyD is of course opened until the fire is strong enough to create steam in the boiler, and the engine has been started, from which time the fan is operated automatically. I prefer to provide the fan-shaft with a fast and a loose pulley, so as to enable me, by'shitting the. belt, to stop the fan entirely, should this become necessary or desirable. As soon as steam 'is created and the engine in operation the damper is closed, and a back pressure upon the draught is its immediate reresult. Were there no exit for the carboniol acid this back*pressurewould at once put out thettire, but tlhs is obviated by the tube J, which affords au egress for the carbonio acid, while the blast from the fan keeps up the draught. rlhe back pressure in the chimney aud line must be of just sutiicient force to keep the products ot' combustion over the fire until all but the carbonio acid has been consumed, which, when freed, easily iinds its way out through the. tube J. force of the. back pressure is regulated by regulating the draughtcreated by the blast from Athe fan.

This is easily and promptly effected by means of'` the damper I in the blast-pipe G. v The same resultis effected in the device shown in iig. 2. In this'case the back pressure upon the draught is produced by the downward bends of tube K, the carbouic acid escaping through the same, and as it passes through the tube it heats the water in the barrel L, from which the boiler may be fed iu any known automatic or other manner, thus effecting a saving in fuel.

l :unaware that processes for burning fuel under pressure, by means of a forced supply oi' air have been in use before, various Inovisions being in such cases made for the escape of the carbonio acid and other saturated gases. I do not, therefore, claim broadly the providing a mode oi' escape for such gases under the conditions named,'as my invention relates l to the specific devices which I employ to this end.

Having thus described my invention,

What I claim as new, and desire to secure by lLetters Patent, is-

1.,'lhe arrangement of the pipe J, bent downwardly, on the chimney` D of a furnace, substantially as and-for the purposes set forth.

2. The combination of the tube K (iig. 2) with the ue C and barrel L, substantially as and for the purpose set forth.

3. The combination of the fan H, bent pipe J, and the damper ou the top ot' the chimney I), when arranged to operate substantially as and for the purposes herein set forth.

.lhc above specification of my improved method of preventing the generation of smoke incident to combustion signed this 13th day ot' N ovcmber, 1809.

Witnesses: THOMAS S. SPEAKMAN.

HENRY J. ARETZ, l Henny A. JOHNSTON.

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