USRE1544E - Improved forge-fire - Google Patents

Description

i .UNITED STATES PATENT OFFICE.

y .Y JoHNnvANs, or. .nnw-nirvnu, CONNECTICUT.

IMPRQVED FORGE-FIRE.

- Specification forming part of Letters Patent No. 37,958, dated March 24, 1863; Reissue No. 1,544, dated September 29, 1863.

To all whom it may concern.:

Be it known that I, JOHN EVANS, of New Haven, in the county of New Haven and State of Connecticut, have invented a new and 1mproved UlosedLehigh ForgeFire; and I do hereby declare the following to be a full, clear,` and exact description of the construction and operation of the same, when taken in connection with the accompanying drawings and the letters of reference marked thereon, and which said drawings constitute part of this specification, and represent, in

`Figure 1, a longitudinal vertical section; Fig. 2, a front elevation of the same, partly in section; and Fig. 3, a plan or top View of the same.

,Similar letters and characters 'indicate like parts in the three views.

Y This invention consists in the arrangement of a hollow water-chamber front in such relation to the tire-place of a Lehigh re and to the flue leading from said lire-place to the chimney or smoke-stack,.and applied in such a manner that the tire is inclosed on all sides except the front, thereby causing the gases to corne to the front, when the same, by coming in contact with the cold air and chamber-front,

. form a combustible mixture, which acts as a part of the fuel.

The invention consists, further, in the arrangement of hollow air-chambers surround-l ing the fire on all sides, and supplied with a current of cold air, which serves for the blast, in such a manner that the persons working at or near the tire are protected against the heat, which, in Lehighfires of the ordinary constructiomradiates from the walls tothe great inconvenience and injury of the health of the workmen employed at or near said re.

To enable those skilled in the art to make and use my invention, I will proceed to describe it with reference 'to the drawings.

A represents a Lehigh tire of the ordinary construction, built up of brick and cast-iron plates, or any other suitable material, and commonly used for heating large pieces of steel, iron, or other metal. B is the tire-place, which is provided with a tilting grate, a, that connects by a curved rod, b, with the fringed bottom c of the' ash-pan, so tha-t by opening or closing said bottom the grate is lowered or raised. The said hin ged bottom closes tight and forms the bottom of a chamber below theiire, into which the block'is introduced. The products of combustion, which rise from the lire in the fireplace, escape to the chamber C, which, being closed at its rear and on its sides and top,'throws the gases to the frontofthe lire, where the same meet the hollow water-chamberfront D'. This front is supplied with water through a flexible pipe, d, which connects with a stop-cock, e, and from this cock a tube,f, extends Anearly down to the bottom of the chamber D, as clearly shown in-Figs. 1 and 2 of the drawings. A pipe, g,pa ssing out through the side of said chamber near to its top, conducts the heated water out to the waste-pipe h. A continuous stream of cold Water is thus lpassed through the chamber D, and thereby the said chamber is kept cool. The gases, in coming in contact with the lower chamfered edge vot' the chamber D, are thrown down and caused to mingle with atmospheric air, so that they form a combustible mixture, which increases the efficiency of the fuel. The products of combustion pass up under theed e of the chamber D to the tlue E, and through'it to the chimney F.

The hollow water-chamber front D is connected to the body of the Lehigh tire by hinges i, or in any other desirable manner, so that it can be thrown open or removed whenever it may be desirable. The sides ot' the re A are. protected by air-chambers Gr G', to which air is admitted through a channel, j,.from below, said channel bein gprovided with a sliding stopvalve, k, so that it can be opened or closed at pleasure. Through this channel the air is introduced to one of the air-chambers, Gr, which communicates with the other, G', through a pipe, l, extending across the top of theire, as clearly shown in Figs.2 and 3of thedrawings. From the air-chamber G a tube, m, conducts the air under the grate a in the tire-place B. By these means a continuons current of cold air passes through the air-chambers, and the outside walls of the vfire are kept comparatively cool.' The top of the flue F is also protected by an airchamber, H, to which cold air is admitted in front, and from which the air escapes through an aperture, n, in the rear.

`The operation is as follows: A stream of cold water is constantly passed through the hollow front D, keeping the same at a pretty whereas my chamber-front acts as a guard,

n jury of the health of the persons employed at health than they can with Lehigh ires of ordinary construction.

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

1. An inclosed Lehigh forgelire, substantiall y in the manner and for the purpose hercin set forth.

y2. The arrangement of the hollow water chamber front D, in combination with the iireplace B of a Lehigh tire, A, constructed and applied substantially as and for the purpose `set forth.

low temperature. When the gases rising from the re strike the edge of this chamber-front, they mingle with the atmospheric air and form a combustible mixture, which serves as a part of the fuel. In the old method of constructing Lehigh re, without the front, the re is frequently forced out at distance of two feet, to the great discomiture of the workmen,

thus enabling me to stand in front with comfort in the hottest days iu summer. Besides this advantage, with my improvement all the gases are consumed, which, with Lehigh fires of the ordinary construction, escape into the in combination with the iireplace B of, a Le building, to the great 'inconvenience and inhigh re,rA, and communicating with the airsupply channel j and discharge-pipe or tuyere or .near the iire. Furthermore, by the use of m, the whole being constructed and operating the air-chambers the whole outside of the furnace can be kept cool, and the heat ot' the tire is concentrated and no part of it wasted. ln short, by my improvements a considerable percenta ge of fuel is saved, and the workmen can do more work and with less injury to their JOHN EVANS.

- Witnesses:

J osEPH KAY, JoH'N E. EARLE.

3. The combination of the air-chambers G G',

substantially 'as4 and for the purpose specified.

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