US240429A - Puddling and heating furnace - Google Patents

Description

(No Model.)

B. C. LAUTH. Puddling and Heating Furnace.

Patented April 19,1881.

NJETERS. PHOTQ-UTHCGRAPHER, WASHINGTONv n O.

V UNITED STATES PATENT OFFICE.

BERNARD O. LAUTH, OF PHILADELPHIA, ASSIGNOR OF ONE-HALF TO WILLIAM STUBBLEBINE, OF BETHLEHEM, PENNSYLVANIA.

PUDDLING AND HEATING FURNACE.

SPECIFICATION forming part of Letters Patent No. 240,429, dated April 19, 1881. Application filed December 14, 1880. (No model.)

To all whom it may concern:

Be it known that I, BERNARD O. LAUTH, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Paddling and Heating Furnaces, of which the following is a specification.

My invention relates to an improvement in the structure attached to paddling and heating furnaces by William Stubblebine, and described in Reissued Patent No. 9,140, granted to said Stubblebine and B. O. Lauth, April 6, 1880, and in Patent N 0. 226,368, granted to the same parties on same date, the object of my invention being to prevent the partition I 5 between the fire-chambers and the gas and air chamber described in the said patents from being impaired by the action of the heat to which it is subjected.

In the accompanying drawings, Figure 1 is a vertical section of sufficient of a paddling or heating furnace to illustrate my invention Fig. 2, a sectional plan on the line 1 2, and Fig. 3 a perspective view of one of the bricks used in making the partition between the fire- 2 5 chambers and gas-chamber.

A represents partof the fire-chamber of a heating or puddling furnace, B part of the ordinaryfire-bridge, and D part of the roof of the furnace.

ure, Gr, closed at the top and containing a gas and air chamber, H, which communicates with the said fire-chamber through openings in a partition, I. A bridge-wall, (0, extends across the chamber, and there is a partly perforated plate, 12, into the space between which and the top of the structure is introduced a blastpipe, d.

The above description applies to the invention of the said Stubblebine for intensifying the heat of the furnace, by causing a portion of the products of combustion to pass upward in the direction of the arrows into the chamber H, to be there mixed with air under press- 5 ure and forced with the air into the fire-chamber near the bridge-wall.

In carrying this invention into effectI have found that the portion of the structure which constitutes the perforated partition I, intervening between the fire-chamber A and the gas and air chamber H, when made of solid brick-work, is soon injured by the action of the heat.

Above the fire-chamber is erected a struct- In order to prevent the rapid destruction of the partition I between the fire-chamber and 5 5 gas and air chamber, I make the said partition in the following manner: Wherever a hole has to pass through the partition I use a brick,

K, through which passes a vertical opening,

these bricks being about fifteen inches high A and of a thickness and width to accord with ordinary fire-bricks h, which are about nine inches long, and of which the remainder of the partition is composed. The perforated bricks are preferably laidin the manner shownin Fig. 6 2-that is, in four rows, two on each side of the Wall a and at about the distance apart from each other substantially as shown. The usual bearers employed in supporting the brick roofs of ordinary furnaces are used in connection with the perforated partition. The partition thus constructed is completed by a covering of thin bricks or tiles n, through which extend openings coinciding with those in the large bricks K. A series ofcommunicating cells, to, closed above and below, are thus made within the partition, and air admitted at any suitable openings can circulate freely through the cells in contact with the large bricks and with the covering tiles and shorter bricks, thereby 8o maintaining the partition at sucha temperature that it can effectively resist the destructive action of the intense heat to which it is subjected.

1 claim as my invention- 8 l. The combination of the fire-chamber A and the gas and air chamberH ofa puddling or heating furnace with a partition, I, within which are a series of spaces communicating with the external air, but having no commu- 9c nication either with the fire-chamber or gaschamber, substantially as set forth.

2. The within-described perforated partition, consisting of long perforated bricks K, shorter bricks h, and a covering, it, all being combined 5 substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

BERNARD O. LAUTH.

Witnesses HENRY HoWsoN, J r., HARRY SMITH.

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