US478401A - Ervin w - Google Patents

Description

(No Model.)

E. GARTWRIGHT. SMOKE GONSUMING FURNAGB.

'me nonms PETERS cal, wom-mno., wAsHlNm'ou. D, c.

UNrTnD STATES APATENT OFFICE..

EDWARD CARTWRIGHT, rOF WILBER, NEBRASKA, ASSIGNOR OF SEVEN- NINTHS TO WILLIAM H. MANN, JOHN W. VEHN, JR., ALFRED BIGELOW, AND FRANK JELENIK, JR., OF SAME PLACE, JAMES A. PADDOCK, OF DEAD'WOOD, SOUTH DAKOTA, ERVIN W. CLANCY AND EMERIC LONGTIN, OF BEATRICE, AND TOBIAS CASTOR, OF LINCOLN, NEBRASKA.

SMOKE`CONSUMING FURNACE.

SPECIFICATION forming part of Letters Patent No. 478,401, dated -Tuly 5, 1892'.

Application filed April 28, 1891.

To all whom, it may concern;

Be it known that l, EDWARD CARTWRIGHT, of Wilber, in the county of Saline and State of Nebraska, have invented a new and useful Improvement in Smoke-Consuming Furnaces, of which the following is a specification.

My invention is in the nature of an improved furnace for heating boilers, metal- Io lurgical and other uses, which is so constructed as to completely consume the smoke without the use of a blast; and it consists in the peculiar shape and arrangement of the outlet-Hue or discharge-conduit, whereby I make available the effects of reliection and concentration of heat to secure the above results, which I will now proceed to describe with reference to the drawings, in which- Figure 1 is a horizontal section taken zo through the furnace on line 002 002 of Fig. 2, an

interior shell only being shown and the 'masonry being indicated in dotted lines. Fig. 2 is aside elevation of a model or shell of the furnace,looking in the direction of the arrow in Fig. l, the fire-box being broken away to show the position of the grate-bars; and Figs.

3, 4, and 5 are vertical cross-sectional views taken, respectively, through the lines m x, y y,

and z z of Fig. l.

In the drawings, A represents the gratebars of the furnace, having the usual tire-box above and around them and the ash-pit below.

Leading from the fire-box is the outlet-flue or discharge-conduit B C D for the products of combustion, the said ue extending from the side walls of the tire-box and entering the chimney-stack S. This'fire-box and outletiiue Will in practice be built of fire-brick, as shown in dotted lines in Fig. l; but for pur- 40 poses of illustration it is shown in the form of a detached shell to better show itis shape. The outlet-fine in passing from the fire-box to the chimney-stack S curves through a horizontal arc of ninety degrees, and as it proceeds from the furnace to the chimney it gradually tapers to a smaller transverse dimension. The outer Wall b c d of this flue or Serial No. 390.831. (No model.)

conduit is of much greater vertical depth than the inner wall b c d', and the roof portion fect action of my furnace in consuming the smoke in the following way: As the hot gases and products of combustion turn the curve of the flue they are from centrifugal action thrown against the outer wall of the curve, where the conduit is made deeper in vertical direction to accommodate them, and in their passage around this wall of the curve they remain for a maximum length of time (being the longer path) in a position where they receive a maximum amount of heat, first, from the direct radiation of heat from the living coals on the hearth, (see lines L) and, secondly, from the flaming products of combustion. The heat rays Z, striking the concave side of this outer curve, are also reflected along down the tapering flue and the heat concentrated in vthe tapering channel until the high temperature stimulates a complete union ot' the carbon particles of the smoke with oxygen, absolutely burning up 'the smoke and securing the most effective and economical combination of the fuel. The arched roof of the iue and the dipping down of the same at the bridge-wall at point C also have a useful effect in concentrating and intensifying the heat, While the upward cant of the end of the flue at D secures a quick discharge of the contents of combustion Without retardation.

My furnace will be found chiefly useful in heating steam-boilers in smelting and in other metallurgical operations; but I do not conline it to this use, but may make it available in all kinds of furnaces.

Having thus described my invention, What I claim as new is- 1. A furnace having an outlet-line curved from the side Walls of the tire-box through a horizontal arc of ninety degrees and having greater vertical depth along thev outer or longer arc than it has along the inner or large arc of the curve than it has upon the xo shorter are, substantially as shown and deinner or smaller are, substantially as shown scribed. and described.

2. A furnace having a tapered or contract- Y 1 f ing outlet-Hue curved from the side Walls of EDWARD CARI WRIGH I" the fire-box through a horizontal are of ninety Vitnesses: degrees and dipping down at a point be- S. D. DAVIS, tween the ends of the ue and also having a J. H. GRIMM, greater vertical depth upon the outer or S. IAIAYEKAFB.

It is hereby certified that in Letters Patent No. 478,401, granted July 5, 1892, upon the application of Edward` Cartwright, of Wilber, Nebraska, for an improvement in Smoke-Consuming Furnaces, an error appears requiring the following correction, viz.: In line 7 of the grant and in theprinted head of the specication, itis stated that said Cartwright assigned seven-ninths to William H. Mann, John W. yWehn, jr., Al fred Bigelow, and Frank J elenik, jr., of same place, James A. Paddock, of Deadwood, South Dakota, Ervin W. Clancy and Emeric Longtin, of' Beatrice, and Tobias Castor, of Lincoln, Nebraska, whereas it should have been stated that he assignedjve-strvths to said parties; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

' Signed, oountersigned, and sealed this 2d day of August, A. D. 1892. y

[SEAL] CYRUS BUSSEY,

Assistant Secretary of the Interior.

Countersigned N. L. FRoTHlNGHAM,

Acting Commissioner of Patents.

Images