US2657651A

US2657651A - Hanger construction for anchor tiles of refractory arches

Info

Publication number: US2657651A
Application number: US201771A
Authority: US
Inventors: Robert H Forsyth
Original assignee: Babcock and Wilcox Co
Current assignee: Babcock and Wilcox Co
Priority date: 1950-12-20
Filing date: 1950-12-20
Publication date: 1953-11-03
Anticipated expiration: 1970-11-03

Description

Nov. 3, 1953 R. H. FORSYTH 2,657,651

HANGER CONSTRUCTION FOR ANCHOR TILES OF REFRACTORY ARCHES Filed Dec. 20, 1950 F I G'. 1

""Hllllllllll V INVENTOR 4/ F l 6.7 0661"! #EzzryZ/z FIG. 5 FIG. 6 aw ATTORNEY bers.

Patented Nov. 3, 1953 UNITED STATES HANGER CONSTRUCTION FOR ANCHOR TILES OF REFRACTORY ARCHES Robert H. Forsyth, Fair Haven, N. J assignor to The Babcock & Wilcox Company, Rockleigh, N. J., a corporation of New Jersey Application December 20, 1950, Serial N 0. 201,771

8 Claims. (01. 11099) This invention relates to hangers for refractory arches and, more particularly, to a novel hanger arrangement whereby the supporting or anchor tiles may be readily suspended in laterally stabilized relation from a framework, irrespective of variations inlateral dimensions of, and without any cutting of, the flanges of structural members included in the framework.

The flat type refractory arches to which the present invention is applicable are used for furnace roofs and bafiles, soaking pit covers, and the like. They comprise a formed block of cast or plastic refractory ceramic material in which are embedded specially shaped blocks or anchor tiles of ceramic material. These anchor tiles are generally uniformly located in the refractory arch and project above the surface thereof. The anchor tiles are formed with suitable supporting shoulders or other configurations whereby a metallic hanger may be secured to the am chor tile for supporting the arch from the supporting framework.

These supporting frameworks generally combine an interconnected arrangement of structural members, the members engaged by the hangers having projecting flanges, and the hangers are so shaped as to fit over these flanges. For adequate bearing support, the hangers should have a horizontal support flange or lip extending in full contact throughout the length of the tile supporting shoulders. Additionally, the anchor should be so designed as to remain laterally stabilized relative to the tile.

These criteria have been met heretofore by providing cast or preformed one-piece hangers having inwardly directed flanges fitting the flanges of the structural members.

This has required the maintenance of a supply of hangers of different sizes and tolerances for use with different sizes of structural mem- In addition, in order to install these hangers on their flanged supporting beams, it has been necessary first to cut out sections of the beam flanges. The hanger castings are then installed in the cut out sections and moved 7 along the length of the beam to the proper positions for engagement with the anchor tiles. The provisions of difierent sizes of hangers, and the rather complicated hanger installation procedure, has contributed materially to the expense of installing the refractory arches and to the maintenance expense.

While other anchor arrangements have been proposed for easier installation on the supporting framework, they have been characterized by lack of full supporting engagement with the tile shoulders. Furthermore, such arrangements lack means laterally stabilizing the hangers relative to the tile.

In accordance with the present invention, the

foregoing disadvantages are avoided and a simple and inexpensive anchor tile support arrangement is provided. To this end, the hanger of the present invention comprises, for each anchor tile, a pair of identical stirrup or U-shaped elements, each having a cross or bight section fully engageable with a support shoulder of an anchor tile. fhe outer ends of the hanger legs are bent to form hook ends engageable over the beam flanges. Two of these hangers are used with each anchor tile, and are arranged thereon in crossed or X relation so that each hanger has its bight engageable with one surface of the anchor tile and extends diagonally across the anchor tile so that its hooked ends engage the opposite flange of the beam.

The stirrup hangers are so arranged that, for each hanger, one leg engages a tile surface and the other leg is separated from the other tile surface by substantially its own thickness, the two hangers thus being arranged in What might be called nesting relation. In order that each hanger have surface engagement with such other tile surfaces, the portion of each hanger leg between the intersection or crossing of the hangers and the bight is offset, or alternatively made thicker on its inner surface, so that each hanger has a dimension between the inner surfaces of the innermost portions of its legs substantially equal to the tile thickness.

The hangers are quickly installed by slipping each hanger over the tile with its bight engaged with a notch and the hangers being in what might be termed "open scissors relation. The openor hooked ends of the hangers are then forced toward each other to engage over the flanges of the opening beam. The weight of the refractory arch is sufficient to maintain the pair of hangers in firmly interengaged relation with the anchor tile and the beam flanges. No

cutting of the beam flanges is necessary for installation of the hangers, and a particular hanger can be used with a set range of sizes and weights of structural beams.

For a detailed understanding of the invention principles, reference is made to the following description of typical embodiments thereof as illustrated in the accompanying drawing.

In the drawing:

Fig. 1 is a vertical sectional view through a flat refractory arch and its supporting framework, illustrating the invention hanger arrangement.

Fig. 2 is a side elevation view illustrating one embodiment of the hanger arrangement supportgig an anchor tile on a flanged structural mem- Fig. 3 is a front elevation view of one form of hanger embodying the invention.

Fig. 4 is a side elevation view of the hanger shown in Fig. 3.

Fig. 5 is a front elevation view of another 3 embodiment of the invention hanger, illustrating, in section, the nesting relation of the associated parts.

Fig. 6 is a side elevation view of the hanger shown in Fig. 5.

Fig. 7 is a side elevation view .of a modification of the form of hanger shown in Figs. 3 and 4.

Referring to Fig. 1, a flat type refractory arch I is illustrated as supported from astructural framework generally indicated'at 4:5. .Arch I0 may be either of the plastic or cast refractory type, and includes anchor blocks II embedded therein. In the cast type of arch, the anchor blocks 1! vI are positioned in a predetermined relation in a suitable mold, and the refractory material is cast in the mold surrounding the anchor .blocks, the arrangement being generally similar to the pouring of asheet of concrete. In a plastic refractory arch, the anchor tiles are again positioned in a predetermined relation in :asuitable mold, and :plastic refractory material is firmly tamped in place and allowed :to set. The invention principles are :applicable equally to both :types of refractory arch construction.

In the usual manner, anchor tiles II have their vertical surfaces formed with projecting ribs or shoulders II2 interspersed by :recesses or grooves I3, thus providing :an interlocking anchor engagement with .the :material of arch I0. upper end of each anchor tile projects above the uppersurface I4 of the arch, and opposed vertical surfaces .of the tile are formed with aligned shoulders, such .as I 6, to receive the hangers for supporting thearch from the'framework I5. An anchor tile of conventional construction may be used with the present invention, the only requirement being that the anchor tile has the .opposed shoulders I 6.

The framework I5 includes any desired arrangement of structural members or beams, and the drawing illustrates .only those framework members which have .a direct relation to the invention hanger. Thus, flanged beam-s I 1 may .be secured to elongated supporting beams '20 having flanges 2| for engagement by the hangers associated with the anchor tiles ll.

In constructions used hereto, wherein the hangers have generally been 'formedor cast rigid members arranged to engage the anchor tiles H .and to slip .over the flange 2 I, it"has been'neces sary to cut away flange 2 for a portion of its length to permit placement of the hangers on the flange. Thereaftenthe hangersareslid along flange 2| to locations aligned with anchor tiles H .and engaged with these anchor tiles. This has required considerable time and labor in securing the-arch Ill to its supporting framework I5. The latter is used either for holding the arch 1-0 in position, or for supporting the arch for movement, as when the arch IIJ is a cover for a soaking pit, for example.

In accordance with the present invention, the hanger construction comprises two identical stirrup shaped members which have rectilinear bases engageable with the shoulders I6 and hooked outer :ends engageable over the flange -2I. These --stirr.up members are first placed in open scissors -or crossing relation on the anchor blocks, and their hooked ends are then swung toward each other to engage over the flange 2|. Thus, no cutting of the flange is necessary and the hanger arrangement is quickly and inexpensively installed at each of the anchor tile locations.

Referring to Figs. 2, 3 and -4,-the embodiment The of the invention shown therein comprises a pair of generally U-shaped stirrup members flfl which, in this embodiment of the invention, comprise castings. Each member has a flat rectilinear base .31 arranged .to engage a shoulder I6, and -a pair .of 1egs32, '32 projecting therefrom. The outer ends oflegs 32, 32' are offset outwardly as at .33 and then directed inwardly to form hook portions 35 including a notch 34 arranged to fit over flange '21. Adjacent base 31, leg 32 has (an abutment for .boss 36 extending therealong for a short distance and having a fiat inner surf-ace. The distance between the inner surface of boss 36 and the :inner surface of the other leg .32 is substantially equal .to .the width of .anachor tile .II. The lateral thickness of boss :36 is substantially equal to-the thickness of each leg 32 or'32.

.A pair of members 30 are placed in crossed relation :on anchor the II with bases 3I enga ing shoulders 4.6. With respect to each member .30, "one leg 32 has its inner surface engaging the side of the anchor tile, and the other leg 32' is spaced from its side of the anchor tile by its :own thickness, the inner surface of boss .36 engaging the anchor tile vso that the latter is substantially immovable relative to each .mem- .ber .30. The members '30 arearranged in interfitted and offset nested relation on the anchor tile :so that each merrlbenhas its leg 32 disposed between the tile surface and the leg 32' :of the other member having the 'boss or abutment 35 thereon. The members :30 are then swung toward .each other so that hooks 3'5 engage over flangeZI which seats recess 34.

Figs. 5 and 6 illustrate an alternative embodiment of the inventionin which .U eshaped stirrup members :40 .are formed .by bending a rod of suitably high strength alloy steel, such as "18-8, for example. Each member 40 has a base .flI :whose length is substantially equal to the width .of anchor blocks H, and a pair of legs 42, 42' extending therefrom. One leg 42 is .substantially perpendicular to base =4I whereas the other leg :42 extends at an angle greater than l9.0 from base 4| to .a point 43 intermediate the ends of leg 42 and adjacent-the crossing or intersection point of hangers 40 when arranged on :a tile BI I. From point 43, :the outer portion 4.4 .of leg :42 extends parallel to leg 42 and perpendicularly to base 4|. The outer ends of "both legs are bent to form hooks having flange receiving recesses 46. The total amount of offset of the outer portion 44 of leg 42' provided by the diverging portion 4-6 is substantially equal to the thickness of one of the hanger legs.

Thereby, when hangers 40 are arranged on anchor tile I I with base-4i engaging shoulders Hi, the hanger will closely embrace the anchor tile adjacent base M, and leg I2 will lie directly along the side surfaceof the anchor tile. However, the outer portion of the leg 4?. is suili- 'cien tly offset from its adjacent tile side surface that the leg 42 vof the other hanger of the pair may be disposed between portions 44 and the tile side surface. The offset other leg 42 of'the other hanger extends over the outer surface of th leg 12. 'By this nested offset relation of the hangers lll theanehor ti'le'is firmly locked against lateral movement relative to the hangers.

Fig. '17 shows a modified form of the hanger illustrated in "Figs. 2, '3 and 4. In this embodiment the legs 32 of each hanger extend rectilinearly from base"3 l to hooks 35, thus eliminating the outward offset 33 of the arrangement of Figs. 2, 3 and 4. Both the hangers 30 and the hangers 30" are formed of a suitable high temperature and corrosion resistant metal. A suitable material has been a 2% chromium alloy, but other alloys may be used with equal efiect.

While specific embodiments of the invention have been shown and described. in detail to illustrate the application of the invention principles, it will be understood that the invention may be embodied otherwise without departing from said principles. 7 r

I claim: 1

1. For use with a refractory arch having up wardly projecting anchor tiles embedded therein and formed with support shoulders in opposite surfaces for engagement with hangers suspending the arch from a framework including flanged structural members, hanger means comprising,

in combination, a pair of independent substantially identical U-shape metal stirrups each having a substantially rectilinear base adapted to engage along a support shoulder of an anchor tile, the outer ends of the stirrup legs being directed in the same direction laterally outward from the plane of the U to form hooks'adapted to engag over the flange of a structural member; said stirrups being adapted to be arranged in crossing relation onthe anchor tile with the hooks of each stirrup being reversely directed relative to the hooks of the other stirrup and with each stirrup having its base adapted to engage a support shoulder in one anchor tile surface and its hooked ends adapted to engage the flange adjacent the opposite surface of the anchor tile.

'2. Foruse with a refractory arch having upwardly projecting anchor tiles embedded therein and formed with support shoulders in opposite surfacesfor engagementwith hangers suspending the arch from a framework including flanged structural members, hanger means comprising, in combination, a pair of independent substantially identical U-shape metal stirrups each having a substantially rectilinear base adapted to engage along a support shoulder of an anchor tile, the outer ends of the stirrup legs being directed in the same directionlaterally outward from the plane of the U to'form hooks adapted to engage over the flange of a structural member; said stirrups being adapted to be arranged in crossing relation on the anchor tile with the hooks of each stirrup being reversely directed relative to the hooks of the other stirrup and with each stirrup having its base adapted to engage a support shoulder in one anchor tile surface and its hooked ends adapted to engage the flange adjacent th opposite surface of the anchor tile; the transverse distance between the inner faces of the outer portions of the legs of each stirrup being substantially equal to the thickness of the anchor tile plus the thickness of one stirrup leg so that each stirrup has one leg adapted to engage the anchor tile and the other leg adapted to embrace the leg of the other stirrup adapted to lie against th anchor tile.

3. For use with a refractory arch having upwardly projecting anchor tiles embedded therein and formed with support shoulders in opposite surfaces for engagement with hangers suspending the arch from a framework including flanged structural members, hanger means comprising, in combination, a pair of independent substantially identical U-shap metal stirrups each having a substantially rectilinear base adapted to engage along a support shoulder of an anchor tile, the outer ends of the stirrup legs being di- 6, rected in the same direction laterally. outward from the plane of the U to form hooks adapted to engage over the flange of a structural mem ber; said stirrups being adapted to be arranged in crossing relation on the anchor tile with the hooks of each stirrup being reversely directed relative to the hooks of the other stirrup and with each stirrup having its base adapted to engage a support shoulder in one anchor tile surface and its hooked ends adapted to engage the flange adjacent the opposite surface of the anchor tile; the transverse distance between the inner faces of the outer portions of the legs of each stirrup being substantially equal to the thickness of the anchor tile plus the thickness of one stirrup leg so that each stirrup has one leg adapted to engage the anchor tile and the other leg adapted to embrace the leg of the other stirrup adapted to lie against the anchor tile; the transvers distance between the inner faces of the legs of each stirrup inwardly of the crossing axis of the stirrups being substantially equal to the thickness of the anchor tile, whereby each stirrup is adapted to be immovable transversely of the anchor tile.

4. For use with a refractory arch having upwardly projecting anchor tiles embedded therein and formed with support shoulders in opposite surfaces for engagement with hangers suspending th arch from a framework including flanged structural members, hanger means comprising, in combination, a pair of independent substantially identical U-shape metal stirrups each having a substantially rectilinear base adapted to engage along a support shoulder of an anchor tile, the outer ends of the stirrup legs being bent in the same direction laterally outward from the plane of the U to form hooks adapted to engage over the flange of a structural member; said stirrups being adapted to be arranged in crossing relation on the anchor tile with the hooks of each stirrup being reversely directed relative to the hooks of the other stirrup and. with each stirrup having its base adapted to engage a support shoulder in one anchor tilev surface and its hooked ends adapted to engage th flange adjacent the opposite surface of the anchor tile; the trans- Verse distance between the inner faces of the outer portions of the legs of each stirrup being substantially equal to the thickness of the anchor tile plus the thickness of one stirrup leg so that each stirrup has one leg adapted to engage the anchor tile and the other leg adapted to embrace the leg of the other stirrup adapted to lie against the anchor tile; one leg of each stirrup having a shoulder extending along its inner surface; inwardly of the crossing axis of the stirrups, and of a thickness equal to the thickness of one stirrup leg, whereby each stirrup is adapted to be substantially immovabl transversely of the anchor tile. 5. For use with a refractory arch having upwardly projecting anchor tiles embedded therein and formed with support shoulders in opposite surfaces for engagement with hangers suspending the arch from a framework including flanged structural members, hanger means comprising, in combination, a pair of independent substantially identical U-shape metal stirrups each having a substantially rectilinear baseadapted to engage along a support shoulder of an anchor tile, the outer ends of the stirrup legs being bent in the same direction laterally outward from the plane of the U to form hooks adapted to engage over the flange of a structural member; said stirrups being adapted to be arranged in crossing relation on the anchor tile with the hooks of each stirrup being reversely directed relative to the hooks of the other stirrup and with each stirrup having its base adapted to engage a support shoulder in one anchor tile surface and its hooked ends adapted to engage the flange adjacent the opposite surface of the anchor tile; the transverse distance between the inner faces of the outer portions of the legs of each stirrup being substantially equal to. the thickness of the anchor tile plus the thickness of one stirrup leg so that each stirrup has one leg adapted to enga e the anchor tile and the other leg adapted to embrace the leg of the other stirrup adapted to lie against the anchor tile; the transverse distance between the inner faces of the legs of each stirrup at the stirrup base being substantial y equal to the thickness of the anchor tile, whereby each stirrup is adapted to be substantially immovable transversely of the anchor tile.

6. For use with a refractory arch having up wardly proiecting anchor tiles embedded therein and formed with support shoulders in opposite surfaces for engagement with hangers suspends ing the arch from a framework including flanged structural members, hanger means comprising, in combination, a pair of independent substantially identical U-shape metal stirrups each having a substantially rectilinear base adapted to engage along a support shoulder of an anchor tile, the outer ends of the stirrup legs being bent in the same direction laterally outward from the plane of the U to form hooks adapted to engage over the flange of a structural member; said stirrups being adapted to be arranged in crossing relation on the anchor tile with the hooks of each stirrup being reversely directed relative to the hooks of the other stirrup and with each stirrup having its bas adapted to engage a support shoulder in one anchor tile surface and its hooked ends adapted to engag the flange adjacent the opposite surface of the anchor tile; the transverse distance between the inner faces of the outer portions of the legs of each stirrup being substantially equal to th thickness of the anchor tile plus the thickness of one stirrup leg so that each stirrup has one leg adapted to engage the anchor tile and the other leg adapted to embrace the leg of the other stirrup adapted to lie against the anchor tile; each stirrup comprising a metal casting having a substantially rectangular cross section; one leg of each stirrup having a shoulder extending along its inner surface, inwardly of the crossing axis of the stirrups, and of a thickness equal to the thickness of one stirrup leg, whereby each stirrup is adapted to be substantially immovable transversely of the anchor tile.

'7. For use with a refractory arch having upwardly projecting anchor tiles embedded therein and formed with support shoulders in opposite surfaces for engagement with hangers suspending the arch from a framework including flanged structural members, hanger means comprising, in combination, a pair of independent substantially identical U-shape metal stirrups each having a substantially rectilinear base adapted to engage along a support shoulder of an anchor tile, the outer ends of the stirrup legs being bent in the same direction laterally outward from the plane of the U to form hooks adapted to engage over 70 the flange of a structural member; said stirrups being adapted to be arranged in crossing relation on the anchor tile with the hooks of each stirrup being reversely directed relative to the hooks of the other stirrup and with each stirrup having its base adapted to enga e a s p ort shoulder in one anchor tile surface and its hooked ends adapted to engage the dance adjacent the opposits surface of the anchor tile; the transverse distance between the inner faces of the outer portions of the legs of each stirrup being substantially equal to the thickness of the anchor tile plus the thickness of one stirrup leg so that each stirrup has one leg adapted to engage the anchor tile and the other leg adapted to embrace the leg of the other stirrup adapted to lie against the anchor tile; each stirrup comprising a metal casting having a substantially rectangular cross section; the transverse distance between the in nor faces of the legs of each stirrup at the stirrup base being substantial y equal to the thickne of the anchor tile, whereby each stirrup is adapted to be substantially immovable transversely of the anchor tile.

8. For use with a refractory arch having upwardly projecting anchor tiles embedded therein and formed with support shoulders in opposite surfaces for engagement with hangers suspending the arch from a framework including flanged structural members, hanger means comprising, in combination, a pair of independent substantially identical U-shape metal stirrups each having a substantially rectilinear base adapted to engag along a support shoulder of an anchor tile, the outer ends of the stirrup legs being bent in the same direction laterally outward from the plane of the U to form hooks adapted to engage over the flange of a structural member; said stirrups being adapted to be arranged in crossing relation on the anchor tile with the hooks of each stirrup being reversely directed relative to the hooks of the other stirrup and with each stirrup having its base adapted to engage a support shoulder in one anchor tile surface and its hooked ends adapted to engage the flange adjacent the opposite surface of the anchor tile; each stirrup comprising a metal bar bent into U-shape; the portions of the legs of each stirrup outwardly of the crossing axis being substantially parallel and the distance therebetween being substantially equal to the thickness of the anchor tile plus the thickness of one stirrup leg, and the portions of the legs of each stirrup inwardly of the crossing axis of the stirrups converging toward the base so that the distance between the legs at the base is substantially equal to the thickness of the anchor tile, whereby each stirrup is abated to be substantially immovable transversely of the anchor tile.

ROBERT H. FORSYTH.

FOREIGN PATENTS Country Date Great Britain 1 June 30, 1925 Great Britain i July 16, 1931 Great Britain July 30, 1931 Number Number