US313071A - Smoke-consuming furnace - Google Patents

Description

NITED STATES ,PA-Tang* QrFIGE@ i FRANKLIN B. GIESLER, 0F MILWAUKEE, 'VISCONSIN.

fPFi-CIFICATION forming part `of Letters Paten-t No. 313,071, dated March 3, 188.5.

Application filed September 26, 1884. (No model.)

,Fi g. 2 is a vertical longitudinal section through the center of the furnace, and Figs. 3 and 4. are details.

A is the furnace, having the usual boiler, B.

C C are doors that open in the combustionchamber, and C C are doors that give access to the draftchambe beneath the grate, and from this Vdraftchamber short fines D D lead into ahorizontal due, D, which latter is connected at one end with a blower, E, and at the other has au exhaust-pipe, FJ, leading down into it.

F is a smoke-chamber, which is connected with the furnace by a flue, F, and with the blower E by a pipe, F.

G is the smoke-stack,which is provided close 4'to its point of connection with the smoke-chamber with a damper, g, a slight distance above which the exhaustpipe E enters the said smoke-stack. Another damper, f, is fitted in the pipe F2 close to the smoke-chamber, and connected to the lowerpart of the said pipe F2 is a small flue, F3, open at its lower end to ad- Amit fresh air through the regulating-valve f The short flues D' D', which connect thehoricrank a of the shaft A', carryingthe cone-pul-4 ley a2, mounted with its companion pulley a3 in any suitable form of hanger on the corresponding side of the furnace.

The cone-pulley as is connected in any suitable manner with the driving mechanism.

In the center of the combustion-chamber I provide a fine, H, of any suitable form, but preferably of the shape shown in Figs. 3 and 4.. rIhis flue extends the whole length of the firebed, its closed bottom resting on top of the grate-bars 7L h. In the upper part of lthis ue a series of perforations, h h' h h', are made on each side.

A passage, H2, is formed in the front of the furnace, between the doors G C, to admit fresh air from the outside to said flue H through a corresponding opening, H3, in the end wall of the flue, -and this passage has atrapdoor, H', which may be kept more or less open by means of any form of adjustable latch in use.

The blower E is belted in any suitable manner, as at pulley E2, with the driving mechanism.

rlhe operation of my device is as follows: Vhen the furnace iire is first lighted, the damper g in the smoke-stack G is opened and the smoke passes outinit until sufficientsteam has been raised to operate the blower; but when this occurs the damper g is closed, andthe dampers f of pipe F2, as well as the dampersf'l fzin the short ilues D', being open, the blower will draw the smoke from the chamber Ffand force it through the flue D and its branches D and into the lire-box, together with a certain quantity of fresh air thatis ind ucedin the same time through the small iue F3, the amount of air thus admitted being regulated by means of the valve f.

The valve e in the lower end of the exhaustpipe VE is lifted at intervals determined by the position of the belt that connects the cone-pulleys a and a3, and this intermitting opening will permit the carbonio-acid gas and surplus smoke to pass out and away. This valve may, moreover, be set so as always to be partly open, so that there may be a constant draftthat will carry off the carbonio-acid gas in flue D,while the smoke is forced through the tire-box to form part of the fuel. As the fresh air admitted through the door H and opening or passage H2 into the iiue H becomes sufficiently heated it rushes up through the perforations in the upper portion of the said flue, and bef sides producing a current that powerfully in- ICO duces the return smoke up through the lirebed it contributes its additional volume of oxygen to materially .aidthe combustion of the gases. Y

Having thus described my invention,\vhatI claim as new, and desire to secure by Letters Patent, is- Y 1. The combiuation,with a furnace, of pipe D, D', F, F2, andF3, the reservoir and blower, pipe E and its valve, and mechanism forlifting the latter at set intervals, substantially as described.

2. In a smokeconsumer, in combination with the furnace A, the horizontal flue D, and branches D D', of a chamber or flue formed Y forth.

above the grate-bars in the center and the Whole length of the furnace, and having its closed bottom resting on the grate-bars, suitable perforations on each side near its top,and an adjustable door opening in the furnace front, substantiallyas and for the purpose set In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of Wiscon. sin, in the presence oftwo witnesses. FRANKLIN B. GIESLER. Witnesses:

, S. S. SToUr,

H. J. FoRsY'rHE.-

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