ANCHORING MEANS FOR INSULATION HANGERS

Abstract: A refractory anchor lining system employing an elongate and weldable stud which is secured to the walls of furnaces, kilns and the like and upon which an insulating blanket is supported and clipped in place. The weldable end of the elongate anchor includes a recess (15, 19) in one instance or an aperture (20) in a second instance to interlock with the U-shaped clip (16) as respects the recess (19) and to interlock alternately with the U-shaped clip (16) or a roll pin (21) in the second instance to permit the system to be interconnected into the non-metallic walls of high density fire brick using the U-shaped clip or low density fire brick using the elongate roll pin.

Description: Description ANCHORING MEANS " FOR INSULATION HANGERS Technical Field The invention relates to refractory anchor lining systems for securing insulating blankets in place on the walls and ceilings of high temperature structures such as furnaces, kilns and the like. Background Art The present invention constitutes improvements to the refractory anchor lining system disclosed in United States patent 3,738,217 issued June 12, 1973. In that patent, the disclosure of which is incorporated herein by reference, there is disclosed an elongate anchor assembly in which one end thereof is intended to be welded to the metallic walls of furnaces, kilns and the like and the other end used to support a refractory lining or blanket impaled upon or over the elongate refractory anchor. Clips cooperating with notches in the outer extremity of the elongate anchor are used to secure the outer surface of the insulating blanket in place. Refractory anchor systems as disclosed in United States patent 3,738,217 work well in their application to metallic walls when welded by the stud end welding tech¬ nique to secure them in place. However, this type of anchor system does suffer the drawback in that it cannot be used to secure insulation blankets to the walls of furnaces, kilns and the like which utilize nonmetallic walls or, more specifically, high density or low density fire brick. Disclosure of Invention In accordance with the present invention, the end of the elongate anchor which is intended to be welded includes interlocking means which, in one instance, is a recess or notch cut into the anchor and, in a second instance, an aperture through the anchor. Anchor securing means are provided for engaging and interconnecting with the inte- rior of either high density or low density fire brick. In the case of high density fire brick, a U-shaped clip is provided which has outturned ears at the extremity of the U as well as inturned ears. The inturned ears are adapted to cooperate with the notch or aperture in the end of the elongate anchor to interconnect with the anchor whereas the outturned ears are designed to engage the interior of a hole drilled into the dense fire brick. In the case of low density fire brick, an elongate roll pin is provided which is received by the aperture in the end of the elongate anchor and is designed to inter¬ connect with the low density fire brick by being pushed into the fire brick and rotated through an angle to inter¬ lock into the interior of the fire brick. Brief Description of Drawings Figure 1 is a perspective exploded view of a first embodiment of the invention; Figure 2 is a perspective exploded view of a second embodiment of the invention; Figure 3 is a sectional side view of the system of the present invention welded in place to metallic walls; Figure 4 is a sectional side view of both the embodi¬ ments of Figures 1 and Figures 2 in place in high density fire brick; Figure 5 is a detailed sectional side view of the embodiment of Figure 1 in place in fire brick; Figure 6 is a detailed sectional side view of the embodiment of Figure 2 in place in high density fire brick Figure 7 is a sectional side view of the embodiment of Figure 2 in place prior to locking in low density fire brick; OMPI • W vv1iPrOv and Figure 8 is a sectional view of the embodiment in Figure 2 locked into place in low density fire brick. Best Mode for Carrying Out the Invention The refractory anchor lining systems of the present invention are shown, in two different embodiments, in Figures .1 and 2 respectively of the drawings. Referring first to Figure 1, the system includes an elongate metallic anchor 10 which.is adapted to be welded at one end 13 to metallic walls of furnaces and the like by the stud end welding technique. The opposite end 11 of the anchor in¬ cludes a plurality of tapered notches 14 adapted to inter¬ lock with an aperture in a retaining clip 12. The method' of use and details of the metallic anchor, clip and inter- locking system for securing insulation blankets to the walls of furnaces and the like is described in detail in United States patent 3,738,217, issued June 12, 1973 here¬ tofore discussed and it is not believed necessary to repeat the details herein, In accordance with the invention, the embodiment in Figure 1 at the end weldable end 13 thereof includes a notch or recess 15 cut into the rectangular cross section of the elongate anchor. A U-shaped clip 16 is provided which includes a pair of outturned ears 17 at the extrem- ities of the U-shaped configuration. Additionally, a pair of inturned ears 18 are provided towards the end of the U-shaped extremity adjacent the outturned ears 17. The embodiment shown in Figure 1 used in conjunction with the U-shaped clip 16 is intended for anchoring the elongate anchor 10 to high density fire brick. The system, in use, is shown generally in the upper portion of Figure 4 and, in detail, in Figure 5 as respects the embodiment of Figure 1. In use, the high density fire brick is drilled per- pendicular to the surface of the fire brick with a drill of a diameter slightly less than the spacing between the outturned ears 17 of the clip 16 and to a depth in excess of the length of the U-shaped clip 16, Thereafter, as may be seen in Figures 4 and 5, the clip 16 is pushed over the end 13 of the anchor 10 until the inturned ears 18 inter¬ lock with the recess 15 formed within the anchor 10. Thereafter, the anchor 10 is driven into the drilled hole in the high density fire brick whereupon the outturned ears 17 resiliently engage the interior of the drilled hol The force upon the outturned ears 17 serves both to inter¬ lock the outturned ears 17 with the interior of the drille hole to prevent the clip 16 from being pulled from the hol while, at the same time, forceably maintaining engagement of the inturned ears 18 with a square shoulder 19 of the recess 15, as best shown in Figure 5. In this manner, the lining anchor 10 which may also be used for metallic walls may alternately be used with high density fire brick to secure the anchor in place as heretofore described. The embodiment shown in Figure 2 may also be used to secure refractory lining to metallic walled structures as the embodiment of Figure 1 by the stud end welding tech¬ nique as shown in Figure 3 and alternately for securing of the anchor into high density fire brick as shown in Figure 4 and 5 but additionally, provides means by which the anch may also be secured into low density fire brick. The interlocking means for cooperating with the ancho securing means in the embodiment of Figure 2 is an apertur or hole 20 drilled through the end 13 of the anchor 10 perpendicular to the longitudinal axis of the anchor. In the embodiment of Figure 2, in the case of high density fire brick, the same U-shaped clip 16 is. employed. In thi instance, the inturned ears 18 engage the aperture 20 to provide the interlock between the U-shaped clip 16 and the anchor 10. The use of the embodiment in Figure 2, in the case of high density fire brick, is substantially identical to tha ( . _ Q M W of the embodiment of Figure 1. The embodiment of Figure 2 in use with high density fire brick is shown generally in the lower portion of Figure 4 and in detail in Figure 6. Specifically, the interlock of the inturned ears 18 with the aperture 20 is shown in detail in Figure 6. The re¬ mainder of the structure and method of installation of the embodiment of Figure 2, with respect to high density fire brick, is the same as the embodiment in Figure 1 and it is not believed necessary to discuss that aspect in any more detail as respects the embodiment of Figure 2. A roll pin 21 is provided for use with the embodiment of Figure 2 in respect to low density fire brick. The roll pin 21 is designed to be forceably inserted into the aper¬ ture 20, as more specifically shown in detail in Figures 7 and 8. Once the roll pin 21 is positioned in place in the anchor 10, the anchor is then forced into the interior of low density fire brick 22 to a depth sufficient to provide the required amount of exposure of the opposite end 11 of the anchor 10 to appropriately secure the blanket insula¬ tion 23 in place as shown in Figure 7. Thereafter, as shown in Figure 8, the anchor 10 is rotated through an angle, preferably 90 degrees, to turn the roll pin 21 out of alignment with the notch that the roll pin cut into the low density fire brick 22 upon insertion and to thereby interlock the roll pin 21 and associated anchor 10 in place in the low density fire brick. From the foregoing, it will be appreciated that the embodiment of Figure 1 provides a refractory anchoring system which may be conventionally welded to a metal re¬ fractory wall 24, as shown in Figure 3, to secure a blanket of insulation 23 in place and, alternately, used to secure a blanket of insulation in place upon a high density fire brick wall 25, as shown in the upper portion of Figure 4 and in detail in Figure 5, utilizing the U-shaped clip 16. Additionally, the embodiment of Figure 2, in addition to having the same uses in securing insulation to metallic walls and to high density fire brick, also provides a mea by which the anchor and associated insulation may be secur into low density fire brick walls 22 and as shown in Figur 7 and 8. The refractory anchor lining system of the present invention has been described in respect to its use for securing refractory linings to walls of furnaces, kilns and the like. However, it is anticipated that the hanger assembly may have many other uses in environments other than refractory furnaces. Additionally, while the inven¬ tion has been described in respect to particular embodi¬ ments thereof as shown in the drawings, no limitation is thereby intended, but instead, the scope of the invention is to be interpreted in view of the appended claims. - • W

Claims: Clai s 1. In refractory anchor lining systems for securing refractory linings to walls of furnaces, kilns and the like of the type having an elongate anchor secured at a first end to the wall against which the lining is to be secured and the lining impaled upon the anchor and secured by a clip at the opposite end of the anchor, the improvements in the anchoring system permitting use of the system for securing lining to walls of different composition and den- sity comprising: anchor securing means for engaging and interconnecting with the interior of the wall upon which the insulation is to be secured; and interlocking means adjacent the first end of the elongate anchor for interlocking the elongate anchor with the anchor securing means to secure the elongate anchor to the wall when the elongate anchor and anchor securing means are forced into the interior of the wall. 2. The improvements of Claim 1 wherein the anchor securing means is a U-shaped clip adapted to be positioned over the first end of the elongate anchor and wherein the clip in¬ cludes outturned ears at the extremity of the legs of the U-shaped clip adapted to engage and lock with the interior of a predrilled hole in high density fire brick. 3. The improvements of Claim 2 wherein the interlocking means is a recess positioned within the first end of the elongate anchor and wherein the U-shaped clip further in¬ cludes inturned ears at the extremities of the legs of the U-shaped clip for engaging the recess. 4. The improvements of Claim 1 wherein the anchor securing means is an elongate member interlocking with the elongate anchor on an axis perpendicular to the elongate axis of the elongate anchor to provide interlock with the interior of low density fire brick upon being forced into the interior of the fire brick and rotated. 5. The improvements of Claim 1 wherein the interlocking means is an aperture in the elongate anchor perpendicular to the longitudinal axis of the elongate anchor. 6. The improvements of Claim 5 wherein the anchor securi means is a U-shaped clip adapted to be positioned over th first end of the elongate member and wherein the clip in¬ cludes outturned ears at the extremities of the legs of the U-shaped clip adapted to engage and lock with the interior of a predrilled hole in high density fire brick. 7. The improvements of Claim 5 wherein the anchor securi means is an elongate member interlocking with the elongat anchor on an axis perpendicular to the elongate axis of t elongate anchor to provide interlock with the interior of low density fire brick upon being forced into the interio of the fire brick and rotated. 8. The improvements of Claim 1 wherein the first end of the elongate anchor is formed of an end weldable material capable of being welded by the stud end welding technique to permit the elongate anchor to be welded to metallic walls and thereby secured in place. QM - >_- w W j 1pP

Inventors: PRESTON F
Applicants: OMARK INDUSTRIES INC, OMARK IND INC
Application year: 1979
Main classification: E04B1
IPC codes: E04F13, F27D1