US2720850A - Tile supporting nose bracket for refractory furnace arches - Google Patents
Tile supporting nose bracket for refractory furnace arches Download PDFInfo
- Publication number
- US2720850A US2720850A US236882A US23688251A US2720850A US 2720850 A US2720850 A US 2720850A US 236882 A US236882 A US 236882A US 23688251 A US23688251 A US 23688251A US 2720850 A US2720850 A US 2720850A
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- United States
- Prior art keywords
- blocks
- arch
- block
- bracket
- refractory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011449 brick Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 8
- 239000010425 asbestos Substances 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 5
- 229910052895 riebeckite Inorganic materials 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241000282320 Panthera leo Species 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/02—Crowns; Roofs
- F27D1/021—Suspended roofs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/02—Crowns; Roofs
- F27D1/021—Suspended roofs
- F27D1/022—Parts thereof, e.g. noses, arches
Definitions
- This invention relates to refractory arch construction. More particularly, the invention has reference to suspended refractory arch assemblies used as roofs of industrial furnaces.
- the broad object of the present invention is to provide a refractory arch construction in which these disadvantages will be eliminated or materially reduced.
- an assembly including a novelly formed tile-supporting bracket adapted for use at selected locations and capable of providing a base for either a droppednose or flat arch assembly as desired, and by the further provision of novelly formed tiles capable of use in combination with said brackets to complete construction of the arch, the tiles being so formed as not to require the use of right and left hand units, and being so formed, additionally as to be capable of being laid in a gas-tight, thrustless arrangement.
- Figure 1 is a longitudinal section through a iiat arch assembly formed in accordance with the present invention.
- Fig. 2 is a fragmentary transverse section taken on line 2-2 of Fig. 1.
- Fig. 3 is an end elevation as seen from line 3 3 of Fig. l.
- Fig. 4 is a longitudinal section through a dropped-nose arch assembly, an alternative angle to which the arch can be formed being illustrated in chain-dotted lines A.
- Fig. 5 is a side elevation of the tile supporting bracket.
- Fig. 6 is a top plan view of said bracket.
- Fig. 7 is an end elevation of the bracket as viewed from the left of Fig. 5.
- Figures 8 and 9 are respectively a side and a front elevation of a refractory block such as is used in the droppednose arch of Figures l and 4.
- Figures l0 and 1l are respectively a side and a front elevation of a thrust block such as is used in the arch constructions of Figure l.
- Figures l2 and 13 are a side and a front elevation of a radial block such as is used in the arch constructions of Figures l and 4.
- Figs. 5 through 7 I have illustrated the tile supporting bracket.
- This is a metal casting and is formed at its upper end with a horizontal shelf 1, one end of which is widened as at 2. Upstanding from the other end of the shelf is the vertical attaching iiange 3 strengthened by a gusset 4 extending between said flange and the shelf. Spaced openings 5, adapted to receive bolts of equivalent fastening means, are formed in the attaching flange.
- a tongue 8 Spaced below the inner end of the shelf and extending longitudinally of the shelf, is a tongue 8. This is integral with the rib and is reinforced by a strengthening web 9 extended between said tongue and the bottom face of the shelf.
- a iin 14B Upstanding from the rib and also eX- tended along the longitudinal center line of the rib is a back iin 11 integral intermediate its ends with a horizontal lower attaching flange 12 having spaced openings 13.
- I provide means spaced longitudinally of the bottom fin 10 adapted to support, at either or both sides of the bracket, end portions of tile support rods to be described hereinafter.
- said means constitutes rib members 14, 15, 16, 17 and 18. These are formed on both sides of the iin 10, being integral with the rib tail portion 7 at their inner ends, and being extended outwardly from said tail portion toward the bottom edge of the iin 10. At their outer ends, the respective rib members are of hook-like formation, deiining bearing pockets for the ends of said tile supporting rods.
- Rib members 16 and 17 extend vertlcally from the longitudinal rib, while rib member 18 constitutes an extension of the rear end of the longitudinal rib.
- bearing pockets are so arranged relative to each other as to be disposed in a horizontal alignment at the tail portion of the bracket (see the rib members 17 and 18).
- This horizontal series of bearing pockets merges into a curvilinear series at the head portion of the bracket (pockets 14, 15 and 16).
- Figs. 12 and 13 there is here illustrated one of the arch tiles used with the above-described bracket. These may be termed radial tiles or blocks. Each of these is of tapered configuration when viewed in side elevation as in Fig. 12, and has a convex (as shown) or circular bottom face, which may be termed the hot face of the block when said blocks are mounted in a refractory arch such as shown in Fig. l or in Fig. 4.
- the converging faces of the radial blocks are at angles of approximately 33 degrees to each other, for a reason to be made apparent hereinafter.
- the radial blocks 19 are formed with reduced upper extensions 20 formed with openings the body 30 of the block 21, the openings 21 being preferably formed noncircularly, so as to allow latitude for limited transverse movement of the tile supporting rods.
- FIG. 10 Another form of block illustrated, and used in the irnproved assembly, is a thrust block 23 illustrated in Figs. 10 and 11.
- This block has one face 24 inclined from the vertical and adapted to contact an adjacent radial block ⁇ in the manner illustrated in Fig. 1.
- the thrust block shown also has a partially curved bottom face 2S.
- Vvertical face ⁇ '26 Opposite the inclined face 24 is provided a Vvertical face ⁇ '26. At the upper end of the block, the ,block is reduced as at 27, defining horizontal shoulders 28. A transverse groove 29,V for a purpose to be made'apparent, is formed in the vertical face 26, slightly below the shoulders 28.
- a t the reduced upper portion 27 of the thrust block is provided a pair of spaced openings'30 which, like the opening 21 of the vradial block, are of non-circular formation.
- the openings are so formed as to eliminate any sharp corners therein, it having been found that this minimizes the possibility of cracking due to mechanical or thermal stresses existing during manufacture or service.
- Figs. 8 and 9 I have illustrated a tile shape in which is of rectangular, flat-faced configuration, said rectangular body being formed with the upper extension 31Y of reduced width and may have one end obliquely cut away as at 32.
- a groove 33 extends fully around the block, at different heights at the base of the reduced upper extension.
- VA plurality of perforations 34 and 35 respectively isizprovided in the block of Fig. 8, the perforation 34 being of slot-like appearance, and the perforations 375 being soformed as to receive tile supporting rods while allowing a limited amount of lateral play in said rods.
- the bracket whichhas been illustrated and described and the Vseveral tiles of blocks, are capable of assembly in various arrangements, to produce refractory arches of desired design;
- One such arrangement isY illustrated in Fig. 1r
- This arrangement shows a flatrefractory arch having. a radial nose.
- the blocks and bracket are assembled in this instance between masonry supporting walls, curtain wall 36 and front wall 37 respectively.
- Supported immediately below the wall 36 is a conventional suspension beam, 38.
- Other beams 39 and 40 are spaced from .and extend parallel to the beam 33; 36, 39 and 40 are adequately supported by outside means.V
- A. plurality of transverse supporti-ng members 41 may heaforme'd from angle iron material, as seen in Fig. 2, and'ha've their ends supported upon the spaced beams. is no necessity of the ends of thel cross members 41 being welded or otherwise rigidly secured to' the'supporting beams', .and they may simply rest thereupon, withoutdetracting from the efficiency, strength or immobility of the completed assembly.
- hooks designed to preumble angles 41- overturning? are suspended from the cross members 41, said hooks' having hook Vends 42 at their upper ends, and having angular bodies 43 asseen in Fig', VHook ⁇ ends? are also formed at the lower ends of; the support hooks, these engaging the medial portions of. approximately semi-circular bridles 44, of heat resist iugm'eta'l', the' lower ends of which are formedv as hooks 45 support' g each ro'd 46 which passes through the perforations'of all the hat-faced or rectangular blocks 39 which constitute an independently arch unit'.
- the blocks 30 is insulation 47' of any desiredtyp'e, and sealing the joints of adjacent units assembled' of. blocks 30 a-gainst gas leakage are asbestos' ropes 48 disposed only inthe inter-unit groove 33 of the blocks.
- Inuasrsembly of. a. at refractory arch. such as seen in 1,. the rst step would be ⁇ to mount the brackets 4 upon the supporting beam 38.
- Wide flange beams are preferred; but I-beams, channel, angle, T-beams, single in multiple or combined, may Vbe used if desired.
- a plurality of brackets formed as illustrated in Fig. 5, is mounted upon said beam, at intervals spaced longitudinally of the beam. The brackets are secured to the beam by means of bolts 49 passing through the beam and through the openingsl 5 of the top attaching ange of each bracket.
- the bracket When so secured to the beam, the bracket will have its tongue 8 supported upon the bottom flange of thev beam as readily seen in Figl. Y
- a spacer bar 50 (or angle) may be provided, overlying the tail portions of the brackets, and secured to the several brackets by means of bolts passed through the spacer bar and through the openings 13 of the bottom attaching flanges 12 of the brackets.V
- This spacer bar 50 may be supported by attachment to bea'r'n 38.
- the thrust blocks 23 are lput into place.
- the thrust blocks are suspended from and are fixed in position by the insertion of rods 51 through the perforations 3i) of the thrust blocks.
- the thrust blocks when strung upon the rods S1, are cemented together in twotile units which will assemblefwithin the center-to-center dimension of the adjacent brackets, with'the ends of the' supporting rods 51 being received in the pockets of the rib members 17 and 18 of the respective brackets. Cement, or resilient expansion joints,- are provided at the vertical joints at the center of the brackets.
- the radial blocks are new assembled to the brackets.
- the radial blocks are pre-cemented -re' versed in pairs, to make up supporting rod 51 is inserted through the perforations of the units.
- the lowermost yradial bleek units are first mounted upon the braeketsgthese' being the radial units' adjacent to the thrust block units 23 and contacting the inclined edges 24 of said thrust blocks'.
- the ends of the single support .rod 51 of the lowe'r'most series of radial blocks are positioned in the pockets of the rib members 16.
- Higher series of radial blocks are similarly positioned in the rib members r15 and 14 re' spectively.
- a wedge block 53 of a conventional fire brick shape; is positioned upon the uppermost series of radial blocks; underv the top shelf of the bracket. Other fire bricks 52 are supported upon the top shelves of the brackets; lling the' space between said top vshelves and the bottom of the masonry 36Y carried orr support 38'.
- V that theconventio'nal wedge brick 53 has a horizontal top face, and has an included ang-le" of approximately 6' degrees'L and 2()minutes.
- each radial block has an included Vangle of 33 degrees. Therefore, theV radial center line of the lowermost radi'al block which passes through its center of gravity, as -block isY symmetrical on this plane, is l degree and 1() minutes This assures a gravity across the joint between and the thrust block 2'3 adjacenttnereto.
- the thrust blocks by their weight, resist displacement in such a way as to reduce the gravity load on the tail end of the brackets at pockets 16.
- Fig. 4 I have illustrated a dropped-nose refractory arch assembled by means of my universal bracket and specially shaped blocks.
- a masonry curtain wall 54 is illustrated, below which is ixedly mounted in any suitable manner the supporting beam 55.
- a plurality of fire bricks 52 are disposed between the top shelves of the brackets that are secured to the supporting beam, and fill the space between said shelves and the curtain wall.
- this form of thrust block is used, this being designated 56.
- this form of thrust block is the same as the thrust block illustrated in Figs. and 11, except that instead of a vertical face 26, another inclined face is provided, to give an upward inclination to the series of blocks extending from contact with the thrust block.
- the thrust blocks 56 are strung upon supporting rods, and secured to the universal brackets by positioning of the rod ends in the pockets of the rib members 17 and 18 of the brackets.
- Radial blocks 19 are assembled in the manner described above, and suspended from and between the universal brackets, after which a wedge iire brick 53 is put in place.
- the pre-assembled units of at faced rectangular blocks 30 are now suspended in proper position, and provide an arch face extending upwardly at an angle of degrees in the present instance.
- the angle of said arch face can be lowered as shown by chain-dotted lines A, or any other angle.
- the uppermost blocks 30 are cut away as at 57, at the point of intersection with the horizontal portion of the arch.
- support hooks 58, 59, 60 and 61 of different selected lengths are used, the upper ends thereof engaging over spaced cross members 62 supported at opposite ends upon supporting beams 63.
- the supporting beams 63 can be rigidly connected by braces 64, angle clips 65 being used to effect the connections between the beams and cross braces.
- the blocks 30 are assembled in multi-block units of four blocks each, the blocks of each unit being pre-cemented with air-setting refractory cement. Thereafter, they are handled and installed as multi-block units. However, adjacent units are dry-laid, that is they are not cemented together. This defines open joints inter-unit crossing through the length and breadth of the assembly. These open interunit joints are filled with strands of asbestos rope which are tamped into the continuous grooves defined by the side-by-side block arrangement in each of the units.
- the grooves in the block ends are slightly higher than the grooves in the sides, thus to secure gas-tight joints throughout, including 66 supthe points where the asbestos ropes cross at right angles.
- the ropes are a substantial distance away from the hot faces of the blocks, and therefore will not deteriorate from being exposed to destructive temperatures.
- All pre-cemented units are installed without the use of cement or plastic joint filler. Rather, they are merely suspended in aligned rows, and the transverse and longitudinal joints between the units caulked with asbestos rope. The possibility of spelled blocks which might otherwise rise due to expansion pressure is thus obviated, since the joints between units include an open space extending fully around each unit below the asbestos caulking which is resilient.
- any unit can be removed or replaced quickly and at minimum expense for labor and parts, and also without the use of mortar or any other wet ller. Since the units are not interlocked or tongue-and-grooved, they do not depend upon each other for support and any unit can therefore be removed individually and replaced without cutting. 'Ihis replacement of units can be accomplished by utilizing unskilled labor working from the outside of the furnace, even while the furnace is too hot to enter.
- a nose bracket for supporting refractory roofs comprising a one-piece casting including a main fin, ribs extending laterally and disposed longitudinally of the main iin, a back iin mounted on and above said ribs, a horizontal top shelf formed integral with one end of said main iin, said top shelf extending a substantial distance forwardly beyond the front edge of said main fin and rearwardly over a portion of said main iin, providing a support, rod supports extending from the rib at one side of the main iin, terminating in hooks disposed adjacent to the edge of the main fin, providing a series of spaced pockets for receiving tile supporting rods.
- a nose bracket for supporting refractory roofs comprising a wide at body having side faces disposed vertically, lateral ribs extending longitudinally of the side faces of the body, a wide horizontal shelf formed integral with one end of said body, spaced rod supporting ribs extending laterally from the side faces of the body, upwardly curved hooks formed at the ends of said supporting ribs adjacent to one edge of said body in which refractory brick supporting rods are adapted to be positioned for supporting refractory bricks mounted on said rods.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
oct. 18, 195s s. H. ANYON 2,720,850
TILE SUPPORTING NOSE BRACKET FOR REFRACTORY FURNACE ARCHES ,jlargon INVENTOH ATTORNEYS Oct. 18, 1955 s. H. LANYON 2,720,850
TILE SUPPORTING NOSE BRACKET FOR REFRACTORY FURNACE ARCHES Filed July 16, 1951 4 Sheets-Sheet 2 s; l5 N c) s Q v a N P- v Q D v/m 0)] Oct. 18, 1955 s. HA LANYON 2,720,850
TILE SUPPORTING NOSE BRACKET FOR REFRACTORY FURNACE ARCHES Filed July 1e, 1951 4 Sheets-Sheet 3 JjZLafgala INVENTCR BY Maw-v@ ATTORNEYS Oct. 18, 1955 s. H. LANYON 2,720,850
TILE SUPPORTING NOSE BRACKET FOR REFRACTORY FURNACE ARCHES Filed July 16, 1951 4 Sheets-Sheet 4 CIO INVENTOR,
ATTORNEYS United States Patent Otlce 2,720,850 Patented Oct. 18, 1955 TEE SUPPORTING NOSE BRACKET FOR REFRACTORY FURNACE ARCHES Samuel H. Lanyon, San Francisco, Calif., assigner to Frank Groves Company, San Francisco, Calif.
Application July 16, 1951, Serial No. 236,882 2 Claims. (Cl. 11G-99) This invention relates to refractory arch construction. More particularly, the invention has reference to suspended refractory arch assemblies used as roofs of industrial furnaces.
In conventionally constructed refractory arch assemblies, certain disadvantages exist which it is proposed to eliminate through the present invention. In such conventional assemblies, construction of a refractory arch proceeds with a slowness which is undesirable; thrust and loading pressures are excessive at various locations in the arch, stresses within the arch are created by thermal expansion; skilled workers are required; replacement of individual parts is diicult and costly; metal parts providing integrity to the assembly are too close to the hot face thereof; and, quite commonly, resistance to gas leakage is not developed to as high an extent as is desirable.
The broad object of the present invention is to provide a refractory arch construction in which these disadvantages will be eliminated or materially reduced.
It is proposed to meet this object of the invention by provision of an assembly including a novelly formed tile-supporting bracket adapted for use at selected locations and capable of providing a base for either a droppednose or flat arch assembly as desired, and by the further provision of novelly formed tiles capable of use in combination with said brackets to complete construction of the arch, the tiles being so formed as not to require the use of right and left hand units, and being so formed, additionally as to be capable of being laid in a gas-tight, thrustless arrangement.
With the foregoing and other objects in View which will appear as the description proceeds, the invention consists of certain novel details of construction and combination of parts, hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts Without departing from the spirit of the invention as claimed.
Referring to the drawings:
Figure 1 is a longitudinal section through a iiat arch assembly formed in accordance with the present invention.
Fig. 2 is a fragmentary transverse section taken on line 2-2 of Fig. 1.
Fig. 3 is an end elevation as seen from line 3 3 of Fig. l.
Fig. 4 is a longitudinal section through a dropped-nose arch assembly, an alternative angle to which the arch can be formed being illustrated in chain-dotted lines A.
Fig. 5 is a side elevation of the tile supporting bracket.
Fig. 6 is a top plan view of said bracket.
Fig. 7 is an end elevation of the bracket as viewed from the left of Fig. 5.
Figures 8 and 9 are respectively a side and a front elevation of a refractory block such as is used in the droppednose arch of Figures l and 4.
Figures l0 and 1l are respectively a side and a front elevation of a thrust block such as is used in the arch constructions of Figure l.
Figures l2 and 13 are a side and a front elevation of a radial block such as is used in the arch constructions of Figures l and 4.
Referring to the drawings in detail, in Figs. 5 through 7 I have illustrated the tile supporting bracket. This is a metal casting and is formed at its upper end with a horizontal shelf 1, one end of which is widened as at 2. Upstanding from the other end of the shelf is the vertical attaching iiange 3 strengthened by a gusset 4 extending between said flange and the shelf. Spaced openings 5, adapted to receive bolts of equivalent fastening means, are formed in the attaching flange.
Rigid with the intermediate portion of the shelf 1 and extended downwardly therefrom is the upper portion 6 of a longitudinal rib having an elongated, straight tail portion 7 extending obliquely to and projecting a substantial distance beyond the rear end of the shelf 1, the rear or inner end of the shelf being that end on which is provided the attaching ange 3.
Spaced below the inner end of the shelf and extending longitudinally of the shelf, is a tongue 8. This is integral with the rib and is reinforced by a strengthening web 9 extended between said tongue and the bottom face of the shelf.
Depending from the rib throughout the length of the rib, and disposed upon the longitudinal center line of the rib, is a iin 14B. Upstanding from the rib and also eX- tended along the longitudinal center line of the rib is a back iin 11 integral intermediate its ends with a horizontal lower attaching flange 12 having spaced openings 13.
I provide means spaced longitudinally of the bottom fin 10 adapted to support, at either or both sides of the bracket, end portions of tile support rods to be described hereinafter. In the present form of the invention, said means constitutes rib members 14, 15, 16, 17 and 18. These are formed on both sides of the iin 10, being integral with the rib tail portion 7 at their inner ends, and being extended outwardly from said tail portion toward the bottom edge of the iin 10. At their outer ends, the respective rib members are of hook-like formation, deiining bearing pockets for the ends of said tile supporting rods.
The rib member 14, as readily seen from Fig. 5, extends horizontally from the longitudinal rib, while the rib member 1S extends downwardly and obliquely from the longitudinal rib. Rib members 16 and 17 extend vertlcally from the longitudinal rib, while rib member 18 constitutes an extension of the rear end of the longitudinal rib.
As a result, it may be noted that the bearing pockets are so arranged relative to each other as to be disposed in a horizontal alignment at the tail portion of the bracket (see the rib members 17 and 18). This horizontal series of bearing pockets merges into a curvilinear series at the head portion of the bracket ( pockets 14, 15 and 16).
Referring to Figs. 12 and 13, there is here illustrated one of the arch tiles used with the above-described bracket. These may be termed radial tiles or blocks. Each of these is of tapered configuration when viewed in side elevation as in Fig. 12, and has a convex (as shown) or circular bottom face, which may be termed the hot face of the block when said blocks are mounted in a refractory arch such as shown in Fig. l or in Fig. 4. In this connection, the converging faces of the radial blocks are at angles of approximately 33 degrees to each other, for a reason to be made apparent hereinafter.
At their upper ends, the radial blocks 19 are formed with reduced upper extensions 20 formed with openings the body 30 of the block 21, the openings 21 being preferably formed noncircularly, so as to allow latitude for limited transverse movement of the tile supporting rods.
Y The provision of the reduced upper extensions denes side shoulders V22, and these are curved circumferentially from the apex of the angle enclosing the con-j verging faces'of the blocks. l
Another form of block illustrated, and used in the irnproved assembly, is a thrust block 23 illustrated in Figs. 10 and 11. This block has one face 24 inclined from the vertical and adapted to contact an adjacent radial block `in the manner illustrated in Fig. 1. The thrust block shown also has a partially curved bottom face 2S.
Opposite the inclined face 24 is provided a Vvertical face `'26. At the upper end of the block, the ,block is reduced as at 27, defining horizontal shoulders 28. A transverse groove 29,V for a purpose to be made'apparent, is formed in the vertical face 26, slightly below the shoulders 28.
A t the reduced upper portion 27 of the thrust block is provided a pair of spaced openings'30 which, like the opening 21 of the vradial block, are of non-circular formation. In ,both blocks, the openings are so formed as to eliminate any sharp corners therein, it having been found that this minimizes the possibility of cracking due to mechanical or thermal stresses existing during manufacture or service.
In Figs. 8 and 9 I have illustrated a tile shape in which is of rectangular, flat-faced configuration, said rectangular body being formed with the upper extension 31Y of reduced width and may have one end obliquely cut away as at 32. A groove 33 extends fully around the block, at different heights at the base of the reduced upper extension.
VA plurality of perforations 34 and 35 respectively isizprovided in the block of Fig. 8, the perforation 34 being of slot-like appearance, and the perforations 375 being soformed as to receive tile supporting rods while allowing a limited amount of lateral play in said rods.
The bracketwhichhas been illustrated and described and the Vseveral tiles of blocks, are capable of assembly in various arrangements, to produce refractory arches of desired design; One such arrangement isY illustrated in Fig. 1r This arrangement shows a flatrefractory arch having. a radial nose. The blocks and bracket are assembled in this instance between masonry supporting walls, curtain wall 36 and front wall 37 respectively. Supported immediately below the wall 36 is a conventional suspension beam, 38. Other beams 39 and 40 are spaced from .and extend parallel to the beam 33; 36, 39 and 40 are adequately supported by outside means.V
, A. plurality of transverse supporti-ng members 41 may heaforme'd from angle iron material, as seen in Fig. 2, and'ha've their ends supported upon the spaced beams. is no necessity of the ends of thel cross members 41 being welded or otherwise rigidly secured to' the'supporting beams', .and they may simply rest thereupon, withoutdetracting from the efficiency, strength or immobility of the completed assembly.
At spaced intervals, supporting hooks designed to preveut angles 41- overturning? are suspended from the cross members 41, said hooks' having hook Vends 42 at their upper ends, and having angular bodies 43 asseen in Fig', VHook` ends? are also formed at the lower ends of; the support hooks, these engaging the medial portions of. approximately semi-circular bridles 44, of heat resist iugm'eta'l', the' lower ends of which are formedv as hooks 45 support' g each ro'd 46 which passes through the perforations'of all the hat-faced or rectangular blocks 39 which constitute an independently arch unit'.
Covering, the blocks 30 is insulation 47' of any desiredtyp'e, and sealing the joints of adjacent units assembled' of. blocks 30 a-gainst gas leakage are asbestos' ropes 48 disposed only inthe inter-unit groove 33 of the blocks.
Inuasrsembly of. a. at refractory arch. such as seen in 1,. the rst stepwould be `to mount the brackets 4 upon the supporting beam 38. Wide flange beams are preferred; but I-beams, channel, angle, T-beams, single in multiple or combined, may Vbe used if desired. A plurality of brackets formed as illustrated in Fig. 5, is mounted upon said beam, at intervals spaced longitudinally of the beam. The brackets are secured to the beam by means of bolts 49 passing through the beam and through the openingsl 5 of the top attaching ange of each bracket.
When so secured to the beam, the bracket will have its tongue 8 supported upon the bottom flange of thev beam as readily seen in Figl. Y
If found desirable to rigidify the several brackets in relation to each other, a spacer bar 50 (or angle) may be provided, overlying the tail portions of the brackets, and secured to the several brackets by means of bolts passed through the spacer bar and through the openings 13 of the bottom attaching flanges 12 of the brackets.V
This spacer bar 50 may be supported by attachment to bea'r'n 38.
After the brackets have been secured to the beam in this manner, the thrust blocks 23 are lput into place. The thrust blocks are suspended from and are fixed in position by the insertion of rods 51 through the perforations 3i) of the thrust blocks. The thrust blocks, when strung upon the rods S1, are cemented together in twotile units which will assemblefwithin the center-to-center dimension of the adjacent brackets, with'the ends of the' supporting rods 51 being received in the pockets of the rib members 17 and 18 of the respective brackets. Cement, or resilient expansion joints,- are provided at the vertical joints at the center of the brackets.
The radial blocks are new assembled to the brackets.
As a first step, the radial blocks are pre-cemented -re' versed in pairs, to make up supporting rod 51 is inserted through the perforations of the units. The lowermost yradial bleek units are first mounted upon the braeketsgthese' being the radial units' adjacent to the thrust block units 23 and contacting the inclined edges 24 of said thrust blocks'. The ends of the single support .rod 51 of the lowe'r'most series of radial blocks are positioned in the pockets of the rib members 16. Higher series of radial blocks are similarly positioned in the rib members r15 and 14 re' spectively. Y
A wedge block 53, of a conventional fire brick shape; is positioned upon the uppermost series of radial blocks; underv the top shelf of the bracket. Other lire bricks 52 are supported upon the top shelves of the brackets; lling the' space between said top vshelves and the bottom of the masonry 36Y carried orr support 38'.
Considering the relativev formation Vand arrangement of the radial blocks and thrust blocks when mounted inV position, it is believed appropriate to note Vthat theconventio'nal wedge brick 53 has a horizontal top face, and has an included ang-le" of approximately 6' degrees'L and 2()minutes. As previously noted herein, each radial block has an included Vangle of 33 degrees. Therefore, theV radial center line of the lowermost radi'al block which passes through its center of gravity, as -block isY symmetrical on this plane, is l degree and 1() minutes This assures a gravity across the joint between and the thrust block 2'3 adjacenttnereto. As a result, the assembly of three radial blocks and the wedge brick above' will, by their unbalanced weight, producea lforce tending' to cause the' thrust blqks fo pivotA on that sup*- porting rouv 5r passing through the right hand pei-feralfio'n' 3s f the thrust 1510er wln the trusf broer is viewed as in Fig. 1'. Such rotation is stopped by the vertical immovabil'ity of' rod 5.1 in left hand perfora-V tion 30. Y
In other existing. similar assemblies this force is either absorbed by the blocks of the adjacent-flat portion of the arch assembly, or by an anchored metal thrust a unit, after which asi-ngleV pressure due to the lowest radial' l'jlotkV plate, which must necessarily extend close to the hot face of the tile. Such thrust plates are soon burned out and are known to be highly undesirable.
In the present assembly, however, the thrust blocks, by their weight, resist displacement in such a way as to reduce the gravity load on the tail end of the brackets at pockets 16.
In Fig. 4, I have illustrated a dropped-nose refractory arch assembled by means of my universal bracket and specially shaped blocks.
In this instance a masonry curtain wall 54 is illustrated, below which is ixedly mounted in any suitable manner the supporting beam 55. A plurality of fire bricks 52 are disposed between the top shelves of the brackets that are secured to the supporting beam, and fill the space between said shelves and the curtain wall.
In this instance another form of thrust block is used, this being designated 56. Essentially, this form of thrust block is the same as the thrust block illustrated in Figs. and 11, except that instead of a vertical face 26, another inclined face is provided, to give an upward inclination to the series of blocks extending from contact with the thrust block.
In any event, the thrust blocks 56 are strung upon supporting rods, and secured to the universal brackets by positioning of the rod ends in the pockets of the rib members 17 and 18 of the brackets. Radial blocks 19 are assembled in the manner described above, and suspended from and between the universal brackets, after which a wedge iire brick 53 is put in place.
The pre-assembled units of at faced rectangular blocks 30 are now suspended in proper position, and provide an arch face extending upwardly at an angle of degrees in the present instance. Through the provision of a different type of thrust block 56, the angle of said arch face can be lowered as shown by chain-dotted lines A, or any other angle. The uppermost blocks 30 are cut away as at 57, at the point of intersection with the horizontal portion of the arch.
With reference to the suspension of the blocks 30 in proper position, support hooks 58, 59, 60 and 61 of different selected lengths are used, the upper ends thereof engaging over spaced cross members 62 supported at opposite ends upon supporting beams 63. The supporting beams 63 can be rigidly connected by braces 64, angle clips 65 being used to effect the connections between the beams and cross braces.
Supported upon the beams 63 are angle irons porting the fuel chute 67 and 68.
In both assemblies, the blocks 30 are assembled in multi-block units of four blocks each, the blocks of each unit being pre-cemented with air-setting refractory cement. Thereafter, they are handled and installed as multi-block units. However, adjacent units are dry-laid, that is they are not cemented together. This defines open joints inter-unit crossing through the length and breadth of the assembly. These open interunit joints are filled with strands of asbestos rope which are tamped into the continuous grooves defined by the side-by-side block arrangement in each of the units.
It is believed worthy of note that the grooves in the block ends are slightly higher than the grooves in the sides, thus to secure gas-tight joints throughout, including 66 supthe points where the asbestos ropes cross at right angles. The ropes are a substantial distance away from the hot faces of the blocks, and therefore will not deteriorate from being exposed to destructive temperatures.
All pre-cemented units, as previously noted, are installed without the use of cement or plastic joint filler. Rather, they are merely suspended in aligned rows, and the transverse and longitudinal joints between the units caulked with asbestos rope. The possibility of spelled blocks which might otherwise rise due to expansion pressure is thus obviated, since the joints between units include an open space extending fully around each unit below the asbestos caulking which is resilient.
Another important characteristic of the invention is also believed worthy of note, in that any unit can be removed or replaced quickly and at minimum expense for labor and parts, and also without the use of mortar or any other wet ller. Since the units are not interlocked or tongue-and-grooved, they do not depend upon each other for support and any unit can therefore be removed individually and replaced without cutting. 'Ihis replacement of units can be accomplished by utilizing unskilled labor working from the outside of the furnace, even while the furnace is too hot to enter.
Having thus described the invention, what is claimed 1s:
l. A nose bracket for supporting refractory roofs comprising a one-piece casting including a main fin, ribs extending laterally and disposed longitudinally of the main iin, a back iin mounted on and above said ribs, a horizontal top shelf formed integral with one end of said main iin, said top shelf extending a substantial distance forwardly beyond the front edge of said main fin and rearwardly over a portion of said main iin, providing a support, rod supports extending from the rib at one side of the main iin, terminating in hooks disposed adjacent to the edge of the main fin, providing a series of spaced pockets for receiving tile supporting rods.
2. A nose bracket for supporting refractory roofs comprising a wide at body having side faces disposed vertically, lateral ribs extending longitudinally of the side faces of the body, a wide horizontal shelf formed integral with one end of said body, spaced rod supporting ribs extending laterally from the side faces of the body, upwardly curved hooks formed at the ends of said supporting ribs adjacent to one edge of said body in which refractory brick supporting rods are adapted to be positioned for supporting refractory bricks mounted on said rods.
References Cited in the iile of this patent UNITED STATES PATENTS 1,541,441 Stimmel June 9, 1925 1,544,869 Stevens July 7, 1925 1,612,412 Bigelow Dec. 28, 1926 1,690,088 Burnet Oct. 30, 1928 1,750,355 Ragoucy Mar. 11, 1930 1,760,121 Dobie May 27, 1930 1,764,707 Abbott June 17, 1930 1,806,747 Dobie May 26, 1931 1,806,809 Lanyon May 26, 1931 2,132,517 Reintjes Oct. 11, 1938
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US236882A US2720850A (en) | 1951-07-16 | 1951-07-16 | Tile supporting nose bracket for refractory furnace arches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US236882A US2720850A (en) | 1951-07-16 | 1951-07-16 | Tile supporting nose bracket for refractory furnace arches |
Publications (1)
Publication Number | Publication Date |
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US2720850A true US2720850A (en) | 1955-10-18 |
Family
ID=22891385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US236882A Expired - Lifetime US2720850A (en) | 1951-07-16 | 1951-07-16 | Tile supporting nose bracket for refractory furnace arches |
Country Status (1)
Country | Link |
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US (1) | US2720850A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3115109A (en) * | 1960-05-02 | 1963-12-24 | Levi S Longenecker | Suspended roof construction |
US3375795A (en) * | 1965-06-11 | 1968-04-02 | Detrick M H Co | Panelized furnace roof |
US3789780A (en) * | 1972-12-29 | 1974-02-05 | L Longenecker | Suspended roof and end wall construction for reverberatory furnace |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1541441A (en) * | 1923-10-19 | 1925-06-09 | Caseyhedges Co | Furnace arch |
US1544869A (en) * | 1920-05-01 | 1925-07-07 | Detrick M H Co | Furnace |
US1612412A (en) * | 1925-07-25 | 1926-12-28 | Frank B Bigelow | Furnace-arch construction |
US1690088A (en) * | 1925-10-17 | 1928-10-30 | Laclede Christy Clay Products | Arch-nose construction |
US1750355A (en) * | 1925-06-09 | 1930-03-11 | Ragoucy Alexis Constant | Construction of furnace or oven arches |
US1760121A (en) * | 1923-10-26 | 1930-05-27 | American Arch Co | Refractory arch construction |
US1764707A (en) * | 1927-03-07 | 1930-06-17 | Abbott Lyle Stockton | Furnace-arch construction |
US1806809A (en) * | 1931-05-26 | lan yon | ||
US1806747A (en) * | 1931-05-26 | Purnace structure | ||
US2132517A (en) * | 1936-08-10 | 1938-10-11 | George P Reintjes | Arch nosing |
-
1951
- 1951-07-16 US US236882A patent/US2720850A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1806809A (en) * | 1931-05-26 | lan yon | ||
US1806747A (en) * | 1931-05-26 | Purnace structure | ||
US1544869A (en) * | 1920-05-01 | 1925-07-07 | Detrick M H Co | Furnace |
US1541441A (en) * | 1923-10-19 | 1925-06-09 | Caseyhedges Co | Furnace arch |
US1760121A (en) * | 1923-10-26 | 1930-05-27 | American Arch Co | Refractory arch construction |
US1750355A (en) * | 1925-06-09 | 1930-03-11 | Ragoucy Alexis Constant | Construction of furnace or oven arches |
US1612412A (en) * | 1925-07-25 | 1926-12-28 | Frank B Bigelow | Furnace-arch construction |
US1690088A (en) * | 1925-10-17 | 1928-10-30 | Laclede Christy Clay Products | Arch-nose construction |
US1764707A (en) * | 1927-03-07 | 1930-06-17 | Abbott Lyle Stockton | Furnace-arch construction |
US2132517A (en) * | 1936-08-10 | 1938-10-11 | George P Reintjes | Arch nosing |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3115109A (en) * | 1960-05-02 | 1963-12-24 | Levi S Longenecker | Suspended roof construction |
US3375795A (en) * | 1965-06-11 | 1968-04-02 | Detrick M H Co | Panelized furnace roof |
US3789780A (en) * | 1972-12-29 | 1974-02-05 | L Longenecker | Suspended roof and end wall construction for reverberatory furnace |
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