US1548544A - Furnace-arch construction - Google Patents

Description

Aug. 4, 1925. 1,548,544

C. N. MORGAN ET AL. FURNACE ARCH CONSTRUCTION Filed March 22. 1924 Fla.)

n6. 5 I *F/ z v /NVENTOR5 Char/e5 N /70rga/7 finarew L .Kea/er ATTORNEX Patented Aug. 4, 1925.

UNITED STATES PATENT OFFICE.

CHARLES N. MORGAN, OF ALBANY, AND ANDREW L. KEELER, OF TROY, NEW YORK.

FURNACE-ARCH CONSTRUCTION.

Application filed March 22, 1924. Serial No. 701,085.

To all whom it may concern:

Be it known that we, CHARLES N. Mon- GAN and ANDREW L. KEELER, citiZenS of the United States, and residing, respectively, at Albany, in the county of Albany, State of New York, and Troy, in the county .of Rensselaer, State of New York, have invented new and useful Improvements in Furnace-Arch Constructions, of which the following is a specification.

Our invention relates to furnace arches, and particularly to the end construction of furnace arches of any type.

In arches of this character, due to the intense heat to which they are exposed, it is necessaryto provide for considerable expansive movement of the structure, and also to protect the steel work which supports the refractory portion of the arch from the direct influence of the furnace gases. The inner end of the arch, adjacent the boiler, which is exposed to particularly intense heat, is so designed as to form a base or support for the superimposed curtain wall which extends upwardly from the arch to the boiler, and it is desirable that the refractory units in this part of the arch should be so designed and supported as to be readily removable and renewable without substantially disturbing the curtain Wall above, or other portions of the arch structure.

The objects of our invention, therefore, are to provide an end construction for a furnace arch which will permit the necessary expansive movement of the structure without destroying or injuring its integrity, which will thoroughly protect the steel work from the influence of the hot 4 furnace gases; which will be supported entirely independently of the main arch; and in which disintegrated blocks may be readily removed and renewed without substantially disturbing portions superimposed thereon and normally sup-ported thereby.

e accomplish these objects by utilizing the novel form of refractory blocks and means for supporting these blocks, together with the novel arrangement and combination of these with other features illustrated in the accompanying drawing, in which Fig. l is a fragmentary perspective view of our end construction shown in connection with a suspended flat arch;

F ig. 2 is a fragmentary elevation of our end construction as viewed from inside the furnace;

Fig. 3 is a section of Fig. 2 on the line 33, showing details of the supporting means.

In the drawing, 1 represents the end blocks of the arch which may be substantially quadrantal in section, as shown. 2 represents in a general way the main arch, and 3, the curtain wall which has one course of blocks supported on the corner blocks, 1. The corner or end blocks, 1, have an upper horizontal face, 5, a rear vertical face, 6, and are preferably but not necessarily provided with a curved face, 4., exposed to the fire. The upper face, 5, of the end block is provided with a vertical channel,

or recess, 7, extending across the block; and

the rear face, 6, is provided with a similar channel or recess, 8, which extends horizontally across the rear of the block. These channels are respectively adapted to receive a vertical lug or lip 9, and a horizontal lug or lip, 10, of an angular metal hanger, 11,'whioh extends around the upper rear corner of the block. The weight of the block is supported upon lip, 10, and lip, 9, merely prevents the block from tipping forward. 'It will be noted that there is some space between the angular part of the hanger, 11, and the block, 1, and between the outer sides of the lips and the channels, so that the block and hanger are somewhat loosely associated. This provides for expansion in the block itself. The hanger, 11, is provided with an upwardly extending leg, 12, having a hooked end, 13, adapted to engage the flange of a standard channel, 14:, which is attached to the bottom flange of the supporting I beam, 15. The bill of the hook is short and fits rather loosely over the channel so as to permit the hanger and its associated block to swing or pivot freely to the front and upwardly about the edge of the channel, 14, as an axis. To hold the hanger and its associated block in its proper position, and so that the faces, 5 and 6, are horizontal and vertical, respectively, the horizontal leg of the hanger extends substantially. parallel to the web of the channel, 14, and is provided with a small, upwardly projecting boss or lug, 16, which rests against the web of the channel. Supported upon the horizontal faces, 5, of the blocks, 1, is a course of blocks, 17 The blocks, 17, are of such length that they span two or more of the blocks, 1, and are offsuch. height that they extend somewhat above the upper flange of the I beam, 15.

The lintel blocks, 18, which support the superimposed curtain wall, break joints with the blocks, 17, and are carried by the I beam, 15'. That portion of the lower face of each block, 18, which extends over the course of blocks, 17-, is notched out to provide a recess, 20, between the blocks, 17 and 18, which is sealed with some elastic, nonconducting and non-combustible substance, such as asbestos, to form an expansion joint, 21. In practice, we prefer to make this joint from to inches in thickness.

From a consideration of the foregoing in connection with the drawing, it will beapparent-that theexpansive thrust of the main arch will swing the block, 1, and the hanger in an outward and upward direction about the edge of the channel, 1 1, as an axis, and that the movement {willbe absorbed in the compression of the elastic material in the expansion joint, 21. It will also be appar-.

cut that any block, 1, may be conveniently removed by first removing only the block, 17, whichis immediately above it. This will permit the block, 1, and its associated hanger to be lifted from the channel so that a new block maybe positioned on the hanger and placed in the arch. This operation will not disturb the curtain wall above for it will be supported on the lintels, 18; and it is obvious that the main arch which is wholly separate from, and independent of our end construction will not be disturbed. Furthermore, since the-end blocks, 1, cannot swing inwardly beyond the vertical because of the arrangement ,and design of the hangeig it isobvious that the units, 22, of the main arch, which are adjacent the blocks, 1, may be removed and replaced without disturbing the, end construction.

In cases where the curtain wall is, of such height and weight as to produce an excessive load on the I beam, 15, the wall may be supported by auxiliary beams imbedded therein, and this isthe usual and ordinary practice followed. v

For the purpose of clearly illustrating the present invention, we have shown our end construction in connection with a sus pended ;arch of the form described and claimed in our copending application Serial No.-631,935, but no claims are made herein to the subject-matter of that application.

Having thus described our invention in its referred form and embodiment, we wish it understood that changes in the details of parts and arrangements thereof may be made without departing from the scope and spirit of the invention as defined in the app ended claims.

1. As an article of manufacture, a hanger for a furnace arch block, comprising a metal angle provided with lugs adapted to engage adjoining sides of said block, and means for pivotally engaging a supporting means.

2. Asan articleof manufacture, a hanger for a furnace arch block, comprising a metal angleadapted to receive an edge of said block therein, inwardly projecting lugs at the edges of the angle adapted to engage said block in recesses provided therein, and means disposed from the vertex of said angle for pivotally engaging a supporting means.

3. In a furnace arch construction, the combination with a supporting beam provided with a hook receiving edge, of a metal hanger for a refractory block suspended therefrom; said hanger being provided with meansfor pivotally'engaging said edge, and having a portion extending under and normally in contact with the bottom of said beam, whereby rotation of said hanger in one direction is prevented.

4. In a furnace arch construction having a mainarch and a curtainwall associated therewith, a corner construction intermediate the arch-and wall comprising an axially suspended block swinging freely under'the. expansive thrust of the main arch, and forming, independent of said main arch, a support for a portion-of said curtain wall;

5. In a furnace arch construction, the combination with a refractory bloclrfornr ing an end unit for said-arch, of ,a metal hanger adapted to be pivotally suspended from'a supporting beam andprovided with angular portions engaging an edge of said beam and grasping into adjoining faces of aid block. 1

6. In a curtain wall construction for a furnace arch, comprising a supporting means including a channel having upturned flanges; a block, forming a support for a portion of said wall, suspended froma flange of said channel bymeans of an angular hanger pivota-lly engaging'a flange of said channel and extending partially around said block and the web of said channel, whereby said block andhangerinay swing freely away from said channel but -1nove mentin the opposite' direction is prevented; and anexpansion joint intermediate said blockandan independently supported portion of said wall for absorbing the movement of the block.

7. An end wall construction for a furnace arch comprising a beam provided with an-upwardly extending flange and forming an independent support for the portion of said wall superimposed thereon; a course of blvcks suspended below said beam by means pivotally engaging said flange and having a portion disposed from said flange and retained against the bottom of said beam by the weight of said blocks, whereby said course of blocks is adapted to form a stable support for aportion of said wall resting thereon.

8. In a furnace arch, a corner construction intermediate angularly disposed portions of said arch comprising a block, a hanger for said block, and a supporting means for said hanger; said means including an axis for pivotally suspending said hanger to swing freely in one direction and means for preventing movement of said hanger in a counter direction.

9. In a furnace arch construction the combination with a main arch portion of an end block therefor and axially suspended means supporting said block and swinging freely under the expansive thrust of the main arch; said means being provided with portions coacting with a supporting means for said block to limit the counter swing thereof.

10. In a furnace arch construction the combination with a main arch portion of an end block therefor forming a support for a superimposed wall, and an axially suspended hanger for supporting said block to swing freely under the expansive thrust of the main arch; said hanger being provided with means fixedly securing it to said block and means coacting with a supporting means therefor to limit the counter swing of said block and maintain said wall substantially vertical.

11. A hanger for a furnace arch block comprising a body portion having angularly disposed members, lugs projecting from said members at substantially right angles to each other and adapted to grasp into adjoining angularly disposed faces of a block, and means for attaching said hanger to a supporting means. 7

12. A hanger for a furnace arch block comprising a metal angle provided with lugs projecting inwardly from the legs of said angle adapted to grasp into adjoining sides of a rectangular block, and means for attaching said hanger to a supporting means.

GHARLES N. MORGAN. ANDREW L. KEELER

Images