US299030A - Eegeneeative skelp heating fuenace - Google Patents

Description

(No Model.) sheets-sheet 1.

' RBGBNERATIVE SKELP HEATING FURNAGE.

MIV` SMITH.

Patented May 20, 18S/L IJIIIIJPI. l l l l l l l l 1 l J I x 4 l l l l 1 I I l l 7 l l l l I l I l I I l l I l J I| vevaor (No Model.) 3 Sheets-Sheet 2.

M. V. SMITH.

REGBNBRATIVE SULB-HEATING PURNAGB. No. 299,030. Patented May 20, 1.884.

N. PETERS, Pholo-Limogmpher. wmhingmn. D. C.

(Nc. Model 3 Sheets-Sheet 3.

M. V. SMTH.

REGENERATIVE SKELP HEATING FURNAGE. No. 299,030. Patented May 2o, 1384.

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N. PETERS. PhowLixhuguplwr, wuhington. D. c

Unirse @rares Parenti? firmen.,

MARTIN V. SMITH, OF TYRONE, PENNSYLVANIA.

REGENERATIV. SKELP-HEATING FU RNACE.

SPECIFICATION forming part of Letters Patent No, 299,030, dated May 20, 1884.

Application tiled December 8, 1883.

To @ZZ whom, it may concern.-

Be it known that I, MARTIN V. SMITH, a citizen of the United States, residing at Tyrone, in the county of Blair and State of Iennsylvania, have invented a new and useful Im` provement in Regenerative Skelp Heating Furnaces; and I hereby declare the following to be a full, clear, and exact description there- 5o ply.

My invention relates to the construction of the regenerators and the air and gas ports which form the entrance to the combustionehamber, and to various points of improvements in skclpheating furnaces, which are designed to heat the skelps or strips of iron placed therein uniformly prior to being rolled or formed into tubes or cylinders.

My invention consists in extending the air-regenerators to a point above the working-hearth of the furnace; in projecting the air lues or ports over and across the top of the gas-regenerators and parallel to the gas-fines, and utilizing the covering of the gas-regenerators for the bottoms of the air-flues; in supporting the roof of the working or combustion chamber on the brick-work forming the air and gas ports, and in making the roof or covering of the air-regenerators separate from that of the working or combustion chamber, it being supported at one side by the brickwork forming the air and gas ports or iiues.

Referring to the drawings, Figure l is atop or plan view on a line below the roof of the furnace. Fig. 2 is a vertical longitudinal sectional view on the line x x of Fig. l. Fig. 3 is a sectional view on the line y y of Fig. 1.

A is the bed of the furnace, which is long and narrow, and is supported on a suitable bed or foundation of masonry by iron bars. The bed of the furnace is filled with sand, on which the skelp to be heated is placed, while the air-holes B and the open spaces (l beneaththe furnace prevent the under side of the furnace-bed from being injuriously heated. Extending along each side, and parallel with the heating-chamber or furnace, are located the regenerator-chambers. D D are the gas-regenerators,which connect with t-he gas-producing furnace, or with any suitable source of sup- The gas-regenerator chambers are filled with the usual pile of 'regenerator-brick, and

(No model.)

connect with the combustion or working chambei E by means of ports or conduits F and flues F,which alternate with the ports or airconduits G. H H are the air-regenerators, and connect with the combustion or working chamber E by means of ports or conduits G, which extend over and across the gas-regenerators, the bottoms of said air ports or conduits G being formed by the covering or arch of the gas-regenerators. The air flues or conduits G are parallel with the gas-fines or conduits F, and open into the combustion-chainber alternately with the gas flues, thus insuring a uniform supply of air to effect a more complete combustion of the gas. The brick which form the piles of the air-regenerators are laid up so as to reach a point above the bed or working -hearth of the furnace. This construction gives a greater heating-surface, and as a result the air, in its passage through th e pile of regenerator-bricks, reaches the combustionchamber and is mingled with the gas in a highly-heated state, thus effecting a complete combustion of the gases. By this arrangement of having the gas and air flues to enter the combustion-chamber from their respective regenerators alternately and throughout the entire length of the furnace, I am enabled to heat the skelp or contents of the furnace uniformly by producing a uniform temperature throughout the furnace, and thus obviate the burning or overheating of the skelp in one portion of the furnace, while in another portion of the furnace the skelp is imperfectly heated, as is the result in most furnaces of this class where the air and gas are thrown into the furnace from a single combining-flue.

It will be observed that the side walls and arches of the gas-regenerating compartments, together with the arches and masonry which form the top and sides of the air ilucs or conduits, form an abutment of brick-work which is sufficiently strong to support the arch or roof of the combustion or working chamber. This is an important feature of my invention, for the reason that the walls which support the arch or roof of the combustion-chamber are rigid and less liable to expand and allow the arch to sag or fall in, as is often the ease in this class of furnaces where great heat is required.

Anotherimportant feature of my invention is, that the gas and air regenerators are above the ground, or extend above the floor-level, which obviates the necessity of making great 5 excavations, and the construction of vast piles of masonry therein, as is the ease with regenerator-furnaces generally; and, furthermore, the gas and air regenerators are embraced under the same roof as the combustion or heating 1o chamber. The roofs or arches covering the air-regenerators are separate from that of the combustion or working chamber, and are supported at one side by the brick-work which formsthe air and gas ports or flues, and are 15 supported at their other sides by the outer wall. Gas and air are supplied to their respective regenerators by pipes or conduits leading to or through the openings 1 1 2 2,which are controlled by suitable valves,-so that they 2o can be shut off when a reversal of the draft is required and allow the waste products to pass 5 into the tunnel I, leading to the stack.

The operation of my furnace is the same as that of all regenerator-furnaees of this class, 2 5 the direction ofthe gases and air being changed alternately, so as to utilize the heat absorbed by the piles of regeneratonbrick in heating the airand gases to make a more perfect combustion.,r

J is the door through which the material to be operated upon is put into and withdrawn from the furnace.

I do not claim in this application the regenerators extending above the fioor-level to 3 5 a point near the level of the working-hearth,V

as this is embraced in my Patent No. 267,116, of November 7, 1882.

Having thus described my invention, what I claim is- 1; In a regenerative furnace, the air flues or 4o conduits leading from the air-regenerators, eX- tending across and over the gas-regenerators, and entering the combustion or melting chamber at the sides thereof, and on the same level and parallel to the gas fiues or conduits, as 45 set forth.

2. In a furnace of the character described, the air-regenerators of which open into the combustion or working chamber by a series of air flues or ports alternating with gas lues or 5o ports opening into the combustion-chamber at the sides thereof, and on the same level with the air-flues, the bottoms of the air-flues forming the arch or cover of the gas-regenerator, as set forth. 55

3. In ya regenerative furnace, the air flues or conduits leading from the air-regenerators, eX- tending across and' over the gas-regenerators, the walls of said gas-regenerators being eX- tended upward above said flues, to form the abutments or skewbacks for the support of the arch or roof of the combustion-chamber, as set forth. y

4. A furnace for heating skelp, consisting of a long narrow heating and working chamber, 65 with air and gas regenerators on each side, which connect with the combustion-chamber by ports or flues opening directly into the a sides thereof and in alternate series, said air and gas ports being arranged on the same level, 7o as set forth.

In testimony whereof I affix my signaturein presence of two witnesses.

MARTIN v. SMITH. [L 5.]

Vitnesses:

W. H. ScULLrN, D. T. CALDWELL.

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