US1999708A - Furnace - Google Patents

Description

April 30, 1935. L. R. sTOwE 1,999,708

FURNACE I Filed May 2l, 1934 2 Sheets-Sheet 2 )fl/.5 Armen/Er@ Patented `Apr's 30, 1935 UNETED STATES PATENT oFFicE 16 Claims.

My invention relates to furnaces and especially to metal supports for refractory linings of walls, ceilings and arches. The principal objects of the invention are to devise a metal supporting structure which will readily admit of expansion and contraction, which is adapted to keep cool, which admits of considerable iiexibility of design, which may be made with a small number of parts and which will require a minimum number of specially shaped tiles. The invention consists principally in the parts and arrangements and combination of parts hereinafter described and claimed.

In the accompanying drawings wherein like reference numerals refer to like parts wherever they occur,

Fig. l is a vertical section through a portion of a furnace equipped' with tile supports embodying my invention, Y

.Fig. 2 is a horizontal section on the line 2;- in Fig. l,

Fig. 3 is a fragmentary section on the line 3--3 in Fig. l,

Fig. 4 is a view illustrating in side elevation the various tile supports,

Fig. 5 is a section on the line 5-5 through the upper inclined tile support shown in Fig. 4,

Fig. 6 is a cross-section on the line 6--6 throughthe lower inclined tile support shown in Fig. 4,

Fig. '7 is a rear elevational View of one of the main bracket castings, showing the pivotal connections between said casting and-the inclined upper and lower tile supports,

Fig. 8 is a horizontal section through one of the bracket castings, the section being taken on the line iiin Fig. 4, l

Fig. 9 is a perspective View of one of the supports for the upper corner tile,

Fig. 10 is a fragmentary View similar to Fig. l showing a modified form of nosing tile hangen Fig. l1 is an end elevational View of said nosing tile hanger,

Fig. 12 is a vertical section through the mainA channel beam of the furnace, showing in elevation a bracket casting' of modifiedY form; and' Fig. 13 is a view similar to Fig. 12 showing another modiiied form of bracket casting.

The accompanying drawings illustrate my invention as embodied in a furnace of well known type. In this construction, the main supporting member is a channel-shaped metal beam A whose ends rest on the side walls B ofthe furnace at a distance back from the front of the furnace. Said beam is set with its web vertical and its flanges extending forwardly. At or close tothe (Cl. 11G-99) front kof the furnace are two I-beams C, C whose ends rest on the side walls of the furnace at elevations that are respectively higher and lower than the main channel beam A,

To the inner face of the main channel beam A are secured,A preferably by bolts l, a series of vertically disposed bracket members D, preferably steel or iron castings.

Each of said bracket castings has an inwardly projecting portion 2` with a substantially hori- Zontal surface located close to the level of the lower end o'f the main channel beam A. This horizontal portion 2' constitutes a shelf or seat for a vertical wall E of tile in front of the main chan-nelb-eam. In order to anchor the wall E to the main channel beam A, the casting D is provided with a forwardly' projecting rib or lug 3 with the Vertical flanges 4 along its opposite sides adapted for cooperation with ordinary center hung tile; that is, the rib or lug 3 is of T- shape and the tile is providedl with a T-shaped slot. This projecting rib may extend the full height of the Wall but it is sufcient if it engages the T-shaped slot 5 of the topm'ostv tile of the wall E.

Each cf the castings D has two horizontally perforated lugs' 5 that extend below the bottom of the channel beam A and are adapted to receive a hinge pin 'i which serves as a support for the rear end of inclined tile hangers Fwhose front ends are supported by" the lower flange of the lower f-beam C". Each of these last mentioned tile hangers hasat its inner end an upwardly extending lug 8 that ts between the lugs 5 of the main casting member D and is perforated in alinement therewith to receive the hinge pin i. Preferably the end portions of the hinge pin 'i' have perforaticns adapted and arranged to receive cotter pins ilV that prevent endwise displacement of the pin and still make it easily removable. Near its front end each tile hanger F is provided with an upwardly and forwardly extending elongated lug It" that is adapted to rest on top of the lower flange of the I-beam C', while thel main portion of the hanger may extend beneath said '.E-beam. Preferably the tip of the lug lil is spaced far enough from the web of the I-beam C toY accommodate expansion of the tile hanger under the influence of heat. It is an advantage of a long lug in this position that it permits consid'erable Variation in the spacing of the I-beam C' with respect to the channel beam A. It is also an advantage that the lug iii may be made separate from the body of the tile hanger F and welded thereto wherever desired so that the spacing of the I-beam C with respect to the channel beam A may be varied greatly and still permit use of the same tile hangers. The tile hanger is of inverted T section adapted for cooperation with center hung orV T slot tiles G. As the tile hanger F is inclined downwardly toward the front, it is desirable to cast or weld a stop plate II near the lower front end thereof to serve as an abutment for the foremost tile.

The horizontal shelf or wall seat portion 2 of each main casting D has a pair of angular lugs i2 on its underside arranged substantially at right angles to the main channel beam A and facing each other. These lugs constitute supports for a tile hanger I-I that is slidably and removably supported thereby. Each of these tile hangers comprises a vertical web portion with lateral flanges I4 at the top adapted to removably engage the flanges I2 of the shelf 2 and lateral anges I5 at the bottom adapted for cooperation with a special nosing tile I with a T-shaped slot I6.

The bracket casting D extends above the top of the main channel beam A in the form of a pair of spaced perforated lugs Il through which extends horizontally a locking pin I8 which also extends through the inner end of a tile support J. This tile support molines upwardly and forwardly and its upper end rests freely cn top of the I beam C. The tile hanger J is of T-shaped section and is adapted for cooperation with center hung or T slot tiles K. Near its lower end the tile support J has a forwardly projecting bracket I9 with angular lugs 2@ arranged like the shelf 2 and lugs I2 of the main castingD above described. Likewise, there is a tile hanger L withy flanges 2| at the top of its web portion slidablyor removably engaging the flanges Eil and with ilanges 22 at its bottom adapted to cooperate with a slot 23 in a tile M.

'Ihe construction illustrated is adapted for use with center hung tiles, that is, with tiles that have inverted T-shaped slots in one end thereof. Standard tiles of this type are mounted directly on the tile hangers of the inclined arch. In order to reduce the number of designs or`patterns of tile as far as practicable, it is desirable to make the vertical wall E of tiles of the same size and design as those that are suspended from the tile hangers F of the lower inclined arch and the same as the tiles that rest on the supports J above said vertical wall. However, as it is only necessary for the uppermost tiles of the vertical wall to be interlocked with the casting D, the other tiles of said wall may be plain tiles without slots.

The nosing tiles I are hung on the hangers H that are suspended from the shelf 2 of the main casting D. These nosing tiles are of segmental shape and have the T-shaped slots I6 in the tops thereof in engagement with the bottom flanges of the tile hanger I-I. It is preferable for the nosing tile hanger H to be substantially parallel or in alinement with the flanges of the inclined arch or ceiling tile hanger F and to make the nosing tile of such angular extent that its upper radial surface will be substantially horizontal when its opposite radial surface bears against the endmost arch or ceiling tile G. It is also desirable to have such upper radial surface of the special nosing tile I spaced from the shelf of the vertical wall slightly more than the thickness of one of the standard tiles. By this arrangement, only one special nosing tile is needed for each bracket. Its

top affords a good support for a regular standard tile to ll the space below the vertical wall, if it is desired to ll such space or it leaves a good opening for secondary draft air in case such air is desired.

The angular space between the top of the vertical wall E and the upper tile supports J is suitably lled with the special tiles M that interlock with the tile holder L provided therefor after the manner of the nosing tile I above described.

In assembling the tiles of the vertical wall E, a space is left between their ends and the base portion of the casting D, that is, the portion next to the main channel beam A. This space constitutes a draft flue that is open at the top and bottom of the main channel beam and is fairly free from obstruction. Likewise, the tops of the inclined arch or ceiling tiles G are lower than the tops of the webs of the hangers F from which they are suspended so that there is an opening below the lower front I-beam to admit air which passes up back of the main channel beam A and underneath the upper tile J support and out over the upper I-bearn C. As this draft of air is interposed between the tile and the main channel beam and the bases of the castings thereon, the metal parts are well protected against the heat and are Well adapte for radiation of heat therefrom.

The beams, castings and tile hangers are made of metal and it is a great advantage of my invention that all metal parts are not only protected from direct exposure to the furnace gases but have the benet of rapid radiation of heat due to theV effective circulation of air contact with them. It is an especial advantage that the flat surface of the main channel beam A faces the wall tiles E and forms therewith an effective flue fo-r circulating the cooling air.

It is noted that the manner of supporting the inclined arch tile hangers F enables them to be set at any desired angle of inclination, because their front ends simply rest on the lower front I-beam C while their rear ends are supported by pins 'I that function as pivots or hinges and permit the front end to be swung up or down to suit the position of the lower front I-beam. In this way, the inclined arch tile hangers may be used at dilferent inclinations according to the height of said I-beam relative to the main channel beam. Likewise, the pin support 'I for any of the tile hangers may be readily removed in which case the inner end of the hanger may be lowered far enough to permit mounting of a tile thereon or the hanger itself may be removed from its I-beam support. Y

It is also noted that the construction above described permits vexpansion and contraction without harm. In case of expansion, the endmost inclined arch or ceiling tiles may push against the segmental tiles or the nosing tiles and force them to slide endwise on their supports or force their supports to slide endwise on the lugs from which said hangers are supported. It is also noted that the segmental tiles may be readily removed and replaced without disturbing any of the inclined arch tiles or any of the Vertical wall tiles. It is also noted that the arrangement of each segmental tile provides for space above it through Which air for secondary combustion may be admitted into the furnace or, if desired, said space may be readily closed with the regular standard tile.

The construction hereinbefore described admits of considerable variation without departing from my invention. For instance, in place of secarse each nosing tile I and nosing tile hanger H hereinbefore described, 'it may be desirable to substitute a plurality of segmental-shaped tile I and a hanger H as indicated in Fig. l0. In such case, it is preferable to modify the nosing hanger H' by making the flanges iaalong its lower end in the form of circular arcs centering around the pin "i that supports the rear end of the inclined arch tile hanger F.

Likewise, instead of using center hung tiles as above described, it is obviously practicable to use side hung-tiles in accordance with the familiar teaching of the art. Obviously, also, instead of making the main casting D in a single piece it may be made in two or more pieces, each performing its particular function;` and such pieces may be welded to the channelbeam A, as shown in Fig. 13, instead of vbeing bolted thereto. In some cases it may be desirabie to hang the casting from the channel beam, as shown in Fig. i2, by providing the upper end of the casting with a hook 23 adapted to engage the upper marginal portion ofa plate 2li welded or otherwise secured to the beam A;

W hat I claim is :4

l. A furnace construction comprising a main beam, brackets secured at the side thereof and provided with wall supporting shelves having slideways on their bottoms, nosing tile hangers slidably suspended from said slideways, and tile hangers whose inner ends are pivotally suspended from said brackets forward of said nosing tile hangers.

2. A furnace construction comprising a channel beam disposed with its flanges extending outwardly horizontally, bracket members secured to the hat side of the web of said channel and provided with inwardly extending shelves disposed near the bottom of the beam, nosing tile hangers movably suspended from said shelves and tile hangers whose inner ends are supported by said bracket members forward of said nosing tile hangers.

3. A furnace construction comprising a channel beam disposed with its flanges extending outwardly horizontally, bracket members secured to the fiat side of the web of said channel and 4provided with inwardly extending shelves disposed near the bottom of the beam, said brackets having perforated lugs extending above and below said channel beam respectively and tile supporting members with perforations alined with said rst mentioned perforations and removable hinge pins extending through said perforatio-ns.

4. A furnace construction comprising a main beam, a secondary beam disposed forwardly thereof and at a lower elevation, bracket members secured to said main beam and having horizontal shelves, a wall of tiles on said shelves, tile hangers hinged to said bracket members and suspended movably from said secondary beam, tiles suspended from said hangers, nosing tile hangers suspended from said shelves, and nosing tiles suspended from said nosing tile hangers in the angle between the wall tiles and said suspended tiles.

5. A furnace construction comprising a main beam, a secondary beam disposed forwardly thereof and at a lower elevation, bracket members secured to -said main beam and having horizontal shelves with slideways on the bottom thereof, a wall of tile-s on said shelves, tile hangers hinged to said bracket members and suspended movably from said secondary beam, tiles suspended from said hangers, nosing tile hangers slidably suspended from said slideways, and nosing tiles suspended from said nosing tile hangers in the angle between the wall tiles and said suspended tiles.

6. A furnace construction comprising a main beam, secondary beams disposed forwardly thereof and at upper and lower elevations respectively, bracket members secured to said main beam and having horizontal shelves, a wall of tiles on said shelves, tile supports hinged to said bracket members and supported movably by said secondary beams, respectively, tiles mounted on said supports, nosing tile hangers suspended from said shelves, and nosing tiles suspended from said nosing tile hangers in the angle between the wall tiles and the tiles on said lower supports.

'LA furnace construction comprising a main beam, a secondary beam disposed forwardly thereof and at a lower elevation, bracket members spaced apart and secured to said main beam and having perforated lugs extending below said main v beam and also having horizontal shelves with slideways on the bottom thereof, a wall of tiles on said shelves, said tiles being spaced from said main beam, tile hangers hinged to said perforated lugs and having hook lugs at the tops of their forward portions suspended movably from said secondary beam, tiles suspended from said hangers, said tiles being located lower than said secondary beam, nosing tile hangers slidably suspended from said shelves, and segmental nosing tiles suspended from said nosing tile hangers in the angle between the wall tiles and said suspended, tiles.

8. A furnace construction comprising a main beam, a secondary beam disposed forwardly thereof and at a lower elevation, bracket members spaced apart and secured to said main beam and having perforated lugs extending below said main beam and also having horizontal shelves with slideways on the bottom thereof, a wall of tiles on said shelves, said tiles being spaced from said main beam, tile hangers hinged to said perforated lugs and having hook lugs at the tops of their forward portions suspended movably from said secondary beam, tiles suspended from said hangers, said tiles being located lower than said secondary beam,v nosing tile hangers slidably suspended from said shelves, and segmental nosing tiles slidably suspended from said nosing tile hangers in the angle between the wall tiles and said suspended tiles and removable without disturbing either the wall tiles or said suspended tiles.

9. A furnace construction comprising a main beam, a secondary beam disposed forwardly thereof and at a lower elevation, bracket members spaced apart and secured to said main beam and having perforated lugs extending below said main beam and also having horizontal shelves with slideways on the bottom thereof, a wall of tiles on said shelves, said tiles being spaced from said main beam, tile hangers hinged to said perforated lugs and having hook lugs at the tops of their forward portions suspended movably from said secondary beam, tiles suspended from said hangers, said tiles being located lower than said secondary beam, nosing tile hangers suspended from said shelves, and segmental nosing tiles suspended from said nosing tile hangers in the angle between the wall tiles and said suspended tiles, said nosing tiles abutting against said suspended tiles and being movable thereby when said suspended tiles are expanded by heat.

i0. A bracket member adapted to be rigidly mounted in upright position on the main supporting member of a furnace construction, said bracket member having a lateral wall shelf on the lower end portion thereof and having perforated lugs at the top and bottom ends thereof adapted to receive hinge pins for pivotally supporting tile supports.

11. A bracket member for a furnace construction, said bracket member having a lateral wall shelf on the lower portion thereof with a slideway on the bottom of said shelf and having perforated lugs at the top and bottom thereof adapted to receive hinge pins for pivotally supporting tile supports.

i2. A bracket member for a furnace construction, said bracket member having a lateral wall shelf on the lower portion thereof with means for engaging a tile hanger therewith and having perforated lugs at the top and bottom thereof adapted to receive hinge pins for pivotally supporting tile supports.

13. A bracket member for a furnace construction, said bracket member Yhaving an inwardly projecting wall shelf on its lower portion and an inwardly projecting angular lug spaced a distance above said shelf, the iiange of said lug extending horizontally whereby it is adapted to engage an angular slot in the front end of an upper tile of the wall.

14. A furnace construction comprising a main beam, a tile wall inwardly of said beam and comprising several layers of tiles, means on said beam for supporting said wall and means secured to said beam and engaging the upper portion of said wall, the tile in an upper layer having T-shaped slots in their ends and said Wall engaging means comprising T-shaped lugs in position to engage said slotted tiles in the upper part of the wall without engaging the lower tile.

15. A furnace construction comprising a beam at the front thereof, a main beam disposed rearwardly of said front beam, tile hangers operatively suspended from said beams,brackets secured at the side of the main beam and provided with wall` supporting shelves, and nosing tile hangers disposed rearwardly of said first men-Y tioned tile hangers and removably suspended from said brackets.

16. A furnace construetion'comprising a beam at the. front thereof, a main beam disposed rearwardly of said front beam, tile hangers operatively suspended from said beams, brackets secured at the side of the main beam and provided with wall supporting shelves having slideways on their bottoms, and nosing tile hangers disposed rearwardly of said first mentioned tile hangers and slidably suspended from said slideways.

LOYD R. STOWE.

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