US1251787A - Chill for open-hearth furnaces. - Google Patents

Description

L. L. KNOX.

CHILL FOR OPEN HEARTH FURNACES.

APPLICATION FILED MAR. M. 1916.

Patented Jam l, 1918.

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L. L. KNOX.

CHILL FOR OPEN HEARTH FURNACES APPLICATION FILED MAR. 14, 1916. 1,251,787. Patented Jan. 1, 1918.

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CHILL FOR OPEN HEARTH FURNACES.

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APPLlCATlON FILED MAR. 14, I916. 1,251,787 Patented Jan. 1, 1918.

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LUTHER L. KNOX, F AVALON, PENNSYLVANIA, ASSIGNOR .TO BLA'W-KNOX COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

CHILL FOR OPEN-HEARTH FURNACES.

Application filed March 14 To all whom it may concern:

Be it known that I, LUTHER L. KNOX, a citizen of the United States, residing at Avalon, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Chills for Open- Hearth Furnaces, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, forming part of this specification, in which Figure 1 is a longitudinal vertical section of a portion of an open hearth furnace structure having my invention applied thereto;

Fig. 2 is an end view of one of the port structures of the furnace;

Fig. 2 is a cross section on the line ll-ll of Fig. 2;

Fig. 3 is a front elevation partly broken away of the cooling plate;

Fig. 4 is a section on the line lVlV of Fig. 3;

Fig. 5 is a front elevation of the supportin casting;

big. 6 is a front elevation of a modified form of chill; and

Figs. 7 and 8 are sections on the lines VIIVII and VIII-VIII, respectively, of Fig. 6.

My invention has relation to chills for open hearth furnace structures, and more particularly to the chills which are used on the ends of the furnace body and also at the mouth ends of the gas and air inlet ports.

The object of my invention is to provide a chill of simple construction which can be readily applied to the furnace and as readily removed therefrom when necessary for re airs or renewals.

eferring first to that form of my invention shown in Figs. 1 to 5, inclusive, the numeral 2 designates one end portion of the hearth portion of an open hearth furnace,

and 3 a portion of the uptalres and fine structure at one end of the furnace. 4- designates the gas inlet port, and 5 the air inlet port.

The construction of these ports may be, in general, of any well known or usual character, and need not be described in detail as they form no part of my present invention.

The chill embodying my invention is shown as applied to the mouth ends oi the port structure, and a similar chili is applied tn the end or the hearth structure. These Specification of Letters Patent.

opening which it partially surrounds.

Patented Jan. 1, 1918.

, 1916. Serial No. 84,051.

two chills are practically duplicates of each gthir and a description of one will suffice for In the form shown in these figures, the

top portion of the chill consists of a plate member 6, adapted to fit against the end face of the part of the structure to which it applied, and which is formed with a water box 7 at its lower edge portion. This water box may be formed either by bending upwardly and back upon itself the lower edge portion of the plate 6; or, as specifically shown in F 4:, it may be formed by welding and riveting to the plate 6 a separate box-forming plate member 8. The water box is of upwardly arched form to conform approximately to the shape of the It reinforced or stiffened by 9, secured thereto, and is supported in place by a frame member 10, preferably of cast iron, to which it is bolted at 11. The casting 10 may be of any suit able form and may be cored out at intervals, as indicated at 12, for the purpose of making it lighter. The casting and the upper edge portion of the plate member 6 are shown as having registering slots 13, to receive the bolts 14, by which the chill is secured to the furnace structure. The leg or side portions of the chill each consists of a plate member 15, provided with a water box 16, which may be formed in the same manner as the water box 8, before referred to, the outer portion of the plate being suitmay be suitably means of angles ably stiffened by means of angles 17 and chill may seat upon the upper ends of the water box 16. The angles or reinforces 17 provide means for attaching the legs to the furnace structure.

The water box is preferably provided with an inlet pipe 18 at each end for relatively cool water, with a central ofi'take pipe or pipes 19 leading from its highest portion. The water box it may also be provided with any suitable water-circulating connection 20.

The bottom member oi the chill may con sist of a separate casting .20 having a cooling pipe or passage 20 therein.

In the form or my invention shown in Figs. 6. 7 and 8 the top and side or leg portions off the chill are formed integrally wl h each other, the said members being properly shaped so that the water box Will substantially surround the port or furnace opening, except for a shaft space at the bottom. The lateral and upper portions of the plate 21, which carries the Water box, is preferably provided with the reinforcing and supporting castings 22, by means of which the chill can be securely bolted to the furnace structure. Any suitable arrangement of bullies 22, may be provided Within the Water box for the purpose of obtaining an ef cient water circulation therein. 2a designates watencirculating connections.

it will be readily seen that in case the Water boxes fail from any cause, the chill can be readily removed from the furnace structure and the box repaired or renewed without renewing the reinforcing and supporting members.

My invention is susceptible of various modifications both as to the form of the water boxes and as to the mode of supportin; them, the essential feature in each case icing that the Water shall be formed of plate or sheet metal with separate attaching and reinforcing members. The Water circulation may also be Widely varied; the boxes may be made either in a single piece, in Figs. 6, 7 and 8, or in any desired number of sections, and various other changes may be made within the scope of the appended claims.

I claim:

1. A removable chill for furnaces comprising; a Water box, one Wall of the Water box being formed of a sheet or plate, said plate extending beyond the Water box to form a securing flange, ant. a separate reinforcing and supporting member secured to the inner side of said plate adjacent tothe Water box. a portion of such reinforcing member lying between the parallel planes of the inner side of said plate and adjacent Wall of the water box, substantially as described.

2. A furnace chill for open iearth furnaces having a mouthv at one end and an air and gas port leading to said month, said chill having a Water box, one -Wall of the water box being formed of a sheet or plate, a second Wall of said Water box lying in a plane parallel to the plane of the plate, said plate extending beyond the Water box, and a reinforcing member or frame connected to basics of this patent may be obtained for five cents each, by addressing the the inner side of the plate adjacent to the Water box, a portion of said reinforcing member or frame lying between the vertical planes of the inner face of the plate and the Wall of the box parallel thereto, and means for securing said chill in position between the mouth of the furnace and the air and gas ports, substantially as described.

An open hearth furnace having a mouth at one end and an air and gas port leading to said mouth, a plurality of chills between the mouth of the furnace and the air and gas port, each chill having a Water box, one Wall of each chill being formed of a sheet or plate, a second Wall of each of said Water boxes lying parallel to the planes of the plates, such plates extending beyond the Water box, and a reinforcing member or frame connected to the inner side of each plate adjacent to the Water box on said chill, a portion of each reinforcing member lying; between the vertical planes of the inncr face of the plate and the Wall of the box parallel thereto, said reinforcing members lying adjacent to each other, and means for securing the chills in position between the mouth of the furnace and the air and gas ports, substantially as described.

l. A removable chill for furnaces having a Water box, one Wall of the Water box being formed of a plate member having a T l opening therethrough, said plate beyond the Water box to form a se curing flange, a second plate having: a body portion extending parallel to the main plate which forms a second Wall of the water box, the last mentioned plate having flanges which extend at right angles to the body thereof, and which are secured to the main plate, said flanges forming the other walls of the Water box, and a plurality of separate reinforcing and supporting members secured to the inner side of the main plate adjacent to the Water box, portions of said reinforcing members lying between the vettical planes of the inner side of the rrfain plate and the body of the second plate, sub stantially as described.

testimony whereof, l have hereunto set my hand.

LUTHER L.

l fitnesses Breanne, FRANK Born.

Commissioner of retreats,

Washington, D. ll.

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