Patent Publication Number: US-2013247498-A1

Title: L-shaped sheetmetal anchor with tubular leg and anchoring assembly

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention provides an L-shaped sheet metal anchor and anchoring assembly having a sealing, protective, and thermally-isolating tubular leg for surface mounting on the inner wythe of a cavity wall and an interengaging veneer tie to positively interconnect the inner and outer wythes. The assembly has application to seismic-resistant structures and to cavity walls having special requirements. The latter include high-strength requirements for both insulated and non-insulated cavities, namely, a structural performance characteristic capable of withstanding a 100 lbf, in both tension and compression. 
     2. Description of the Prior Art 
     In the late 1980&#39;s, surface-mounted wall anchors were developed by Hohmann &amp; Barnard, Inc., now a unit of MiTEK-Berkshire Hathaway Corporation, and patented under U.S. Pat. No. 4,598,518. The invention was commercialized under trademarks DW-10®, DW-10-X®, and DW-10-HS®. These widely accepted building specialty products were designed primarily for dry-wall construction, but were also used with masonry backup walls. For seismic applications, it was common practice to use these wall anchors as part of the DW-10® Seismiclip® interlock system which added a Byna-Tie® wire formative, a Seismiclip® snap-in device—described in U.S. Pat. No. 4,875,319 (&#39;319), and a continuous wire reinforcement. 
     In an insulated dry wall application, the surface-mounted wall anchor of the above-described system has pronged legs that pierce the insulation and the wallboard and rest against the metal stud to provide mechanical stability in a four-point landing arrangement. The vertical slot of the wall anchor enables the mason to have the wire tie adjustably positioned along a pathway of up to 3.625-inch (max.). The interlock system served well and received high scores in testing and engineering evaluations which examined effects of various forces, particularly lateral forces, upon brick veneer masonry construction. However, under certain conditions, the system did not sufficiently maintain the integrity of the insulation. Also, upon the promulgation of more rigorous specifications by which tension and compression characteristics were raised, a different structure—such as one of those described in detail below—was required. 
     The engineering evaluations further described the advantages of having a continuous wire embedded in the mortar joint of anchored veneer wythes. The seismic aspects of these investigations were reported in the inventor&#39;s &#39;319 patent. Besides earthquake protection, the failure of several high-rise buildings to withstand wind and other lateral forces resulted in the incorporation of a continuous wire reinforcement requirement in the Uniform Building Code provisions. The use of a continuous wire in masonry veneer walls has also been found to provide protection against problems arising from thermal expansion and contraction and to improve the uniformity of the distribution of lateral forces in the structure. 
     Shortly after the introduction of the pronged wall anchor, a seismic veneer anchor, which incorporated an L-shaped backplate, was introduced. This was formed from either 12- or 14-gauge sheetmetal and provided horizontally disposed openings in the arms thereof for pintle legs of the veneer anchor. In general, the pintle-receiving sheetmetal version of the Seismiclip® interlock system served well, but in addition to the insulation integrity problem, installations were hampered by mortar buildup interfering with pintle leg insertion. 
     In the 1980&#39;s, an anchor for masonry veneer walls was developed and described in U.S. Pat. No. 4,764,069 by Reinwall et al., which patent is an improvement of the masonry veneer anchor of Lopez, U.S. Pat. No. 4,473,984. Here the anchors are keyed to elements that are installed using power-rotated drivers to deposit a mounting stud in a cementitious or masonry backup wall. Fittings are then attached to the stud which includes an elongated eye and a wire tie therethrough for disposition in a bed joint of the outer wythe. It is instructive to note that pin-point loading—that is forces concentrated at substantially a single point—developed from this design configuration. This resulted, upon experiencing lateral forces over time, in the loosening of the stud. 
     Exemplary of the public sector building specification is that of the Energy Code Requirement, Boston, Mass. (see Chapter 13 of 780 CMR, Seventh Edition). This Code sets forth insulation R-values well in excess of prior editions and evokes an engineering response opting for thicker insulation and correspondingly larger cavities. Here, the emphasis is upon creating a building envelope that is designed and constructed with a continuous air barrier to control air leakage into or out of conditioned space adjacent the inner wythe. 
     As insulation became thicker, the tearing of insulation during installation of the pronged DW10X® wall anchor, see supra, became more prevalent. This occurred as the installer would fully insert one side of the wall anchor before seating the other side. The tearing would occur at two times, namely, during the arcuate path of the insertion of the second leg and separately upon installation of the attaching hardware. The gapping caused in the insulation permitted air and moisture to infiltrate through the insulation along the pathway formed by the tear. While the gapping was largely resolved by placing a self-sealing, dual-barrier polymeric membrane at the site of the legs and the mounting hardware, with increasing thickness in insulation, this patchwork became less desirable. The improvements hereinbelow in surface mounted wall anchors look toward greater insulation integrity and less reliance on a patch. 
     Another prior art development occurred shortly after that of Reinwall/Lopez when Hatzinikolas and Pacholok of Fero Holding Ltd. introduced their sheetmetal masonry connector for a cavity wall. This device is described in U.S. Pat. Nos. 5,392,581 and 4,869,043. Here a sheetmetal plate connects to the side of a dry wall column and protrudes through the insulation into the cavity. A wire tie is threaded through a slot in the leading edge of the plate capturing an insulative plate thereunder and extending into a bed joint of the veneer. The underlying sheetmetal plate is highly thermally conductive, and the &#39;581 patent describes lowering the thermal conductivity by foraminously structuring the plate. However, as there is no thermal break, a concomitant loss of the insulative integrity results. 
     Focus on the thermal characteristics of cavity wall construction is important to ensuring minimized heat transfer through the walls, both for comfort and for energy efficiency of heating and air conditioning. When the exterior is cold relative to the interior of a heated structure, heat from the interior should be prevented from passing through to the outside. Similarly, when the exterior is hot relative to the interior of an air conditioned structure, heat from the exterior should be prevented from passing through to the interior. Providing thermally-isolating seals at the insertion points of the different layers of the inner wythe assists in controlling heat transfer. 
     Another application for high-span anchoring systems is in the evolving technology of self-cooling buildings. Here, the cavity wall serves additionally as a plenum for delivering air from one area to another. While this technology has not seen wide application in the United States, the ability to size cavities to match air moving requirements for naturally ventilated buildings enable the architectural engineer to now consider cavity walls when designing structures in this environmentally favorable form. 
     In the past, the use of wire formatives have been limited by the mortar layer thicknesses which, in turn are dictated either by the new building specifications or by pre-existing conditions, e.g. matching during renovations or additions in the existing mortar layer thickness. While arguments have been made for increasing the number of the fine-wire anchors per unit area of the facing layer, architects and architectural engineers have favored wire formative anchors of sturdier wire. On the other hand, contractors find that heavy wire anchors, with diameters approaching the mortar layer height specification, frequently result in misalignment. This led to the low-profile wall anchors of the inventors as described in U.S. Pat. No. 6,279,283. However, the above-described technology did not address the adaption thereof to surface mounted devices or stud-type devices. Nor does it address the need to thermally-isolate the wall anchor. 
     In the course of preparing this application, several patents, became known to the inventors hereof and are acknowledged hereby: 
     
       
         
           
               
               
               
             
               
                   
               
             
            
               
                 Patent 
                 Inventor 
                 Issue Date 
               
               
                   
               
               
                 2,058,148 
                 Hard 
                 Oct. 20, 1936 
               
               
                 2,966,705 
                 Massey 
                 Jan. 3, 1961 
               
               
                 3,377,764 
                 Storch 
                 Apr. 16, 1968 
               
               
                 4,021,990 
                 Schwalberg 
                 May 10, 1977 
               
               
                 4,305,239 
                 Geraghty 
                 Dec. 15, 1981 
               
               
                 4,373,314 
                 Allan 
                 Feb. 15, 1983 
               
               
                 4,438,611 
                 Bryant 
                 Mar. 27, 1984 
               
               
                 4,473,984 
                 Lopez 
                 Oct. 02, 1984 
               
               
                 4,598,518 
                 Hohmann 
                 Jul. 08, 1986 
               
               
                 4,869,038 
                 Catani 
                 Sep. 26, 1989 
               
               
                 4,875,319 
                 Hohmann 
                 Oct. 24, 1989 
               
               
                 5,063,722 
                 Hohmann 
                 Nov. 12, 1991 
               
               
                 5,392,581 
                 Hatzinikolas et al 
                 Feb. 28, 1995 
               
               
                 5,408,798 
                 Hohmann 
                 Apr. 25, 1995 
               
               
                 5,456,052 
                 Anderson et al. 
                 Oct. 10, 1995 
               
               
                 5,816,008 
                 Hohmann 
                 Oct. 15, 1998 
               
               
                 6,209,281 
                 Rice 
                 Apr. 03, 2001 
               
               
                 6,279,283 
                 Hohmann et al. 
                 Aug. 28, 2001 
               
               
                 7,415,803 
                 Bronner 
                 Aug. 26, 2008 
               
               
                 7,562,506 
                 Hohmann, Jr. 
                 Jul. 21, 2009 
               
               
                 7,845,137 
                 Hohmann, Jr. 
                 Dec. 07, 2010 
               
               
                   
               
            
           
           
               
               
               
               
            
               
                   
                 Patent App. 
                 Inventor 
                 Publication Date 
               
               
                   
                   
               
               
                   
                 2008/0141605 
                 Hohmann 
                 Jun. 19, 2008 
               
               
                   
                 2010/0037552 
                 Bronner 
                 Feb. 18, 2010 
               
               
                   
                 2011/0047919 
                 Hohmann, Jr. 
                 Mar. 03, 2011 
               
               
                   
                   
               
            
           
           
               
            
               
                 Foreign Patent Documents 
               
               
                   
               
            
           
           
               
               
               
               
            
               
                 279209 
                 CH 
                 52/714 
                 March 1952 
               
               
                 2069024 
                 GB 
                 52/714 
                 August 1981 
               
               
                   
               
            
           
         
       
     
     It is noted that with some exceptions these devices are generally descriptive of wire-to-wire anchors and wall ties and have various cooperative functional relationships with straight wire runs embedded in the inner and/or outer wythe. 
     U.S. Pat. No. 3,377,764—D. Storch—Issued Apr. 16, 1968 Discloses a bent wire, tie-type anchor for embedment in a facing exterior wythe engaging with a loop attached to a straight wire run in a backup interior wythe. 
     U.S. Pat. No. 4,021,990—B. J. Schwalberg—Issued May 10, 1977 Discloses a dry wall construction system for anchoring a facing veneer to wallboard/metal stud construction with a pronged sheetmetal anchor. Like Storch &#39;764, the wall tie is embedded in the exterior wythe and is not attached to a straight wire run. 
     U.S. Pat. No. 4,373,314—J. A. Allan—Issued Feb. 15, 1983 Discloses a vertical angle iron with one leg adapted for attachment to a stud; and the other having elongated slots to accommodate wall ties. Insulation is applied between projecting vertical legs of adjacent angle irons with slots being spaced away from the stud to avoid the insulation. 
     U.S. Pat. No. 4,473,984—Lopez—Issued Oct. 2, 1984 Discloses a curtain-wall masonry anchor system wherein a wall tie is attached to the inner wythe by a self-tapping screw to a metal stud and to the outer wythe by embedment in a corresponding bed joint. The stud is applied through a hole cut into the insulation. 
     U.S. Pat. No. 4,869,038—M. J. Catani—Issued 091/26/89 Discloses a veneer wall anchor system having in the interior wythe a truss-type anchor, similar to Hala et al. &#39;226, supra, but with horizontal sheetmetal extensions. The extensions are interlocked with bent wire pintle-type wall ties that are embedded within the exterior wythe. 
     U.S. Pat. No. 4.879.319—R. Hohmann—Issued Oct. 24, 1989 Discloses a seismic construction system for anchoring a facing veneer to wallboard/metal stud construction with a pronged sheetmetal anchor. The wall tie is distinguished over that of Schwalberg &#39;990 and is clipped onto a straight wire run. 
     U.S. Pat. No. 5,392,581—Hatzinikolas et al—Issued Feb. 28, 1995 Discloses a cavity wall anchor having a conventional tie wire for mounting in the brick veneer and an L-shaped sheetmetal bracket for mounting vertically between side-by-side blocks and horizontally atop a course of blocks. The bracket has a slit which is vertically disposed and protrudes into the cavity. The slit provides for a vertically adjustable anchor. 
     U.S. Pat. No. 5,408,798—Hohmann—Issued Apr. 25, 1995 Discloses a seismic construction system for a cavity wall having a masonry anchor, a wall tie, and a facing anchor. Sealed eye wires extend into the cavity and wire wall ties are threaded therethrough with the open ends thereof embedded with a Hohmann &#39;319 (see supra) clip in the mortar layer of the brick veneer. 
     U.S. Pat. No. 5,456,052—Anderson et at.—Issued Oct. 10, 1995 Discloses a two-part masonry brick tie, the first part being designed to be installed in the inner wythe and then, later when the brick veneer is erected to be interconnected by the second part. Both parts are constructed from sheetmetal and are arranged on substantially the same horizontal plane. 
     U.S. Pat. No. 5,816,008—Hohmann—Issued Oct. 15, 1998 Discloses a brick veneer anchor primarily for use with a cavity wall with a drywall inner wythe. The device combines an L-shaped plate for mounting on the metal stud of the drywall and extending into the cavity with a T-head bent stay. After interengagement with the L-shaped plate the free end of the bent stay is embedded in the corresponding bed joint of the veneer. 
     U.S. Pat. No. 6,209,281—Rice—Issued Apr. 3, 2001 Discloses a masonry anchor having a conventional tie wire for mounting in the brick veneer and sheetmetal bracket for mounting on the metal-stud-supported dry wall. The bracket has a slit which is vertically disposed when the bracket is mounted on the metal stud and, in application, protrudes through the dry wall into the cavity. The slit provides for a vertically adjustable anchor. 
     U.S. Pat. No. 6,279,283—Hohmann et at.—Issued Aug. 28, 2001 Discloses a low-profile wall lie primarily for use in renovation construction where in order to match existing mortar height in the facing wythe a compressed wall tie is embedded in the bed joint of the brick veneer. 
     U.S. Pat. No. 7,415,803—Bronner—Issued Aug. 26, 2008 Discloses a wing nut wall anchoring system for use with a two legged wire tie. The wing nut is rotatable in all directions to allow angular adjustment of the wire tie. 
     U.S. Pat. No. 7,562,506—Hohmann, Jr.—Issued Jul. 21, 2009 Discloses a notched surface-mounted wall anchor and anchoring system for use with various wire formative veneer ties. The notches, upon surface mounting of the anchor, form small wells which entrain fluids and inhibit entry of same into the wallboard. 
     U.S. Pat. No. 7,845,137—Hohmann, Jr.—Issued Dec. 7, 2010 Discloses a folded wall anchor and anchoring system for use with various wire formative veneer ties. The folded wall anchor enables sheathing of the hardware and sealing of the insertion points. 
     U.S. Pub. No. 2008/0141605—Hohmann—Filed Dec. 14, 2006 Discloses a dual seal anchoring system for use with insulated cavity walls. The stud-type wall anchor seals the insertion points and stabilizes the wall anchor. 
     U.S. Pub. No. 2010/0037552—Bronner—Filed June 1, 2009 Discloses a side-mounted anchoring system for veneer wall tie connection. The system transfers horizontal loads between a backup wall and a veneer wall. 
     U.S. Pub. No. 2011/0047919—Hohmann. Jr.—Filed Mar. 3, 2011 Discloses a thermally isolated anchoring system for cavity walls. The stud-type wall anchor operates with various veneer ties. 
     None of the above provide a high-strength, surface-mounted wall anchor having an L-shaped sheetmetal anchor with a tubular leg of this invention. The tubule, L-shaped bracket and fastener and seal assembly of the present invention provide wall anchors with a thermally-isolating and protective shaftway that sheaths the fastener and seals the insertion points. The assemblies provide high-strength, sealed interconnections between the inner and outer wythes. The anchoring assembly is modifiable for installation horizontally or vertically and for use with various style veneer ties in varied cavity wall structures. 
     As will become clear in reviewing the disclosure which follows, the cavity wall structures benefit from the recent developments described herein that lead to solving the problems of insulation integrity, sealed anchoring systems, veneer tie adjustability and of high-span applications. 
     SUMMARY 
     In general terms, the invention disclosed hereby is a tubule-type anchoring system for surface mounting in a cavity wall structure. The anchoring system includes a tubule and bracket assembly for mounting on the inner wythe. The tubule and bracket assembly is horizontally or vertically oriented and contains a stepped cylinder portion with a first and second external diameter and a shaftway to sheath a fastener. The stepped cylinder portion is attached to an L-shaped plate that is surface mounted on the inner wythe and extends into the cavity. The L-shaped plate includes a receptor aperture for interengagement with a veneer tie. The veneer tie is partially disposed in the outer wythe to limit movement and takes various forms including a wire formative V-shaped body and pintles. The tubule and bracket assembly is affixed to the inner wythe by a fastener and seal assembly that is sheathed by the shaftway and sealed upon installation. The assembly is mounted either vertically or horizontally. 
     The invention further provides for a tubule-type anchoring system with similar attributes and includes a tubule and bracket assembly, veneer tie, fastener and seal assembly and an insulation seal. The anchoring system is thermally-isolating and includes a specialized wallboard seal and insulation seal at the insulation and wallboard insertion points. The anchoring system also includes an adjustable veneer tie. 
     Another embodiment of the anchoring system includes a tubule and bracket assembly with a stepped cylinder portion containing a shaftway for sheathing a fastener, an L-shaped plate for surface mounting, and a receptor aperture. The tubule and bracket assembly is surface mounted with a fastener and seal assembly and interengages with a veneer tie. The veneer tie accommodates a reinforcement wire for insertion in the outer wythe. The anchoring system is thermally-isolated through the use of insulating seals. The use of this innovative surface-mounted wall anchor in various applications addresses the problems of insulation integrity, veneer tie adjustability and thermal conductivity. 
     It is the primary object of the present invention to provide a new and novel L-shaped sheetmetal anchor with a tubular leg for use in a cavity wall anchoring system. 
     It is another object of the present invention to provide a tubule assembly which fully supports the wall anchor and is affixed to the inner wythe with a fastener and seal assembly. 
     It is yet another object of the present invention to provide a thermally-isolating anchoring system which is resistive to high levels of tension and compression and, further, is detailed to prevent disengagement under seismic or other severe environmental conditions. 
     It is still yet another object of the present invention to provide an anchoring system which is constructed to be surface mounted vertically or horizontally on the inner wythe. 
     It is a feature of the present invention that the tubule and bracket assembly contains a shaftway that is constructed to sheathe a fastener that limits tearing of the insulation upon installation. 
     It is another feature of the present invention that the anchoring system utilizes seals and has only point contact with the metal studs thereby restricting thermal conductivity. 
     It is yet another feature of the present invention that the tubule and bracket assemblies are utilizable with a variety of veneer allowing for site specific construction. 
     Other objects and features of the invention will become apparent upon review of the drawings and the detailed description which follows. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the following drawings, the same parts in the various views are afforded the same reference designators. 
         FIG. 1  shows a first embodiment of this invention and is a perspective view of an L-shaped sheetmetal anchor with tubular leg and anchoring assembly horizontally surface-mounted to a cavity wall with an inner wythe of dry wall construction having insulation disposed on the cavity-side thereof; 
         FIG. 2  is an exploded perspective view of the L-shaped sheetmetal anchor with tubular leg and the fastener and seal assembly of  FIG. 1 ; 
         FIG. 3  is a perspective view showing the anchoring system of  FIG. 1  with the fastener and seal assembly and veneer tie with a pair of pintles interengaging the tubule and bracket assembly; 
         FIG. 4  is a perspective view of a second embodiment of this invention showing a horizontally surface-mounted L-shaped sheetmetal anchor with tubular leg and anchoring system with a veneer tie having a pair of pintles spring mounted within the tubule and bracket assembly and a reinforcement wire disposed within the veneer tie; 
         FIG. 5  is a perspective of a third embodiment of this invention showing a vertically surface-mounted L-shaped sheetmetal anchor with tubular leg and anchoring system with the fastener and seal assembly; 
         FIG. 6  is a perspective view showing the anchoring system of  FIG. 5  with the fastener and seal assembly and veneer tie interengaged with the tubule and bracket assembly and a reinforcement wire disposed within the veneer tie; and 
         FIG. 7  is a side view of the anchoring system of  FIG. 5  with the anchoring system surfaced mounted in the inner wythe and the veneer tie disposed within the bed joint of the outer wythe. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Before entering into the detailed Description of the Preferred Embodiments, several terms which will be revisited later are defined. These terms are relevant to discussions of innovations introduced by the improvements of this disclosure that overcome the technical shortcomings of the prior art devices. 
     In the embodiments described hereinbelow, the inner wythe is provided with insulation. In the dry wall or wallboard construction, this takes the form of exterior insulation disposed on the outer surface of the inner wythe. Recently, building codes have required that after the anchoring system is installed and, prior to the inner wythe being closed up, that an inspection be made for insulation integrity to ensure that the insulation prevents thermal transfer from the exterior to the interior and from the interior to the exterior. Here the term insulation integrity is used in the same sense as the building code in that, after the installation of the anchoring system, there is no change or interference with the insulative properties and concomitantly substantially no change in the air and moisture infiltration characteristics and substantially no loss of heat or air conditioned air from the interior. The present invention is designed to minimize invasiveness into the insulative layer. 
     In a related sense, prior art sheetmetal anchors have formed a conductive bridge between the wall cavity and the metal studs of columns of the interior of the building. Here the terms thermal conductivity, thermally-isolated and -isolating, and thermal conductivity analysis are used to examine this phenomenon and the metal-to-metal contacts across the inner wythe. 
     The term stepped cylinder as used hereinafter refers to a cylinder having cylindrical portions with differing diameters about a common longitudinal axis and having shoulders between adjacent portions or steps. The term thermally-isolated tubule or tubule and bracket assembly for thermally isolating a surface-mounted wall anchor as used hereinafter refers to a stepped cylinder that is joined to a metal base, where the base is positioned substantially at right angles (normal) to the longitudinal axis of the stepped cylinder and where at the location that the stepped cylinder joins to the base, the base surrounds the latitudinal (cross-sectional) perimeter of the stepped cylinder with some area of cylinder material extending on all sides of this joint forming a press-fit relationship. The base has two major faces, identified by the orientation presented when the veneer anchor is installed. The face oriented towards the inner wythe is identified as the base surface, mounting surface, or the surface mounted portion and the face oriented towards the outer wythe is the outer surface. The stepped cylinder sheaths the mounting hardware or fastener and is thermally-isolated through the use of a series of neoprene or similar washers. 
     In addition to that which occurs at the facing wythe, attention is further drawn to the construction at the exterior surface of the inner or backup wythe. Here there are two concerns: namely, maximizing the strength of the securement of the surface-mounted wall anchor to the backup wall and, as previously discussed minimizing the interference of the anchoring system with the insulation. The first concern is addressed using appropriate fasteners such as, for mounting to masonry block, the properly sized concrete threaded anchors with expansion sleeves or concrete expansion bolts and for mounting to metal, dry-wall studs, self-tapping, self-drilling screws. The latter concern is addressed by the thermally-isolating fittings affixed to the stepped cylinder. The fittings seal any openings made in the insulation during installation and inhibit thermal transfer. 
     In the detailed description, the L-shaped sheetmetal anchor with tubular leg and anchoring assembly is oriented vertically or horizontally and paired with a variety of veneer ties. The anchor is secured to the inner wythe through the use of a fastener and seal assembly. 
     Referring now to  FIG. 1 through 3 , the first embodiment shows an L-shaped sheetmetal anchor with tubular leg and anchoring assembly for horizontal surface mounting in a cavity wall. This anchor and anchoring assembly are suitable for recently promulgated standards with more rigorous tension and compression characteristics. The system discussed in detail hereinbelow, is a high-strength wall anchor for connection with an interengaging veneer tie. The wall anchor is horizontally surface mounted onto an externally insulated dry wall inner wythe. A cavity wall having dry wall and insulation mounted on metal studs or columns is chosen as exemplary. 
     The L-shaped sheetmetal anchor with tubular leg and anchoring assembly for surface mounting in a cavity wall is referred to generally by the numeral  10 . An inner wythe or dry wall backup  14  with sheetrock or wallboard  16  and insulation  17  mounted on metal studs or columns  24  is shown. The outer wythe or veneer wall  18  is constructed of facing brick, block or stone  20 . Between the backup wall  14  and the veneer wall  18 , a cavity  22  extends outwardly from the surface  25  of the backup wall  14 . 
     In this embodiment, successive bed joints  26  and  28  are formed between courses of blocks  20  and the joints are substantially planar and horizontally disposed. For each structure, the bed joints  26  and  28  are specified as to the height or thickness of the mortar layer and such thickness specification is rigorously adhered to so as to provide the uniformity inherent in quality construction. 
     For purposes of discussion, the exterior surface  25  of the backup wall  14  contains a horizontal line or x-axis  34  and an intersecting vertical line or y-axis  36 . A horizontal line or z-axis  38 , normal to the xy-plane, also passes through the coordinate origin formed by the intersecting x- and y-axes. In the discussion which follows, it will be seen that the various anchor structures are constructed to restrict movement interfacially—wythe vs. wythe—along the z-axis and, in this embodiment, along the x-axis. The assembly  10  includes a tubule and bracket assembly or wall anchor  40  and with a veneer tie  44  constructed for embedment in bed joint  26 . 
     The tubule-type anchoring system  12  is shown having a tubule and bracket assembly or anchor  40  with a stepped cylinder portion  42  which penetrates the wallboard  16  and insulation  17 . The stepped cylinder  42  has at least a first external diameter or wallboard step  52  and a second external diameter or insulation step  55  arrayed about a common longitudinal axis  47  which is substantially normal to the surface mounted portion  53  of the anchor  40 . The stepped cylinder  42  has a shaftway or aperture therethrough  50  to sheath a fastener  48  and is affixed to the anchor  40 , which is an L-shaped plate with a surface mounted portion  53  and a receptor portion  82  which form a juncture  84  therebetween. The receptor portion  82  extends into the cavity  22  and contains a receptor aperture  83  which is substantially parallel to the juncture  84 . 
     The stepped cylinder  42  is a metal leg constructed from sheet metal such as hot dipped galvanized, stainless and bright basic steel and contains a wallboard step  52  that forms a shoulder  53  between the first external diameter  52  and the second external diameter  55 . A wallboard seal  57  is disposed on the shoulder  53  and is thermally isolating and constructed of compressible nonconductive material which precludes the passage of fluids through the inner wythe  14 . A substantially similarly constructed insulation seal  58  is disposed on the surface mounted portion  53  surround the stepped cylinder portion  42 . 
     At intervals along the outer wythe surface, the anchors  40  are surface-mounted using fastener and seal assemblies  60  which consist of a fastener  48  and a seal  43 . The fastener  48  extends though the shaftway  50  for attachment to the inner wythe  14 . The seal  43  seals the surface mounted portion  53 . The fasteners or self-tapping or self-drilling screws  48  are inserted through the stepped cylinders  42 . In this structure, the stepped cylinders  42  sheath the exterior of mounting hardware  48 . The fasteners  48  are thermally-isolated from the anchor  40  through the use of the seal  43  which is composed of compressible nonconductive material such as neoprene. The seal  43  is disposed about the fastener  48  and seals the shaftway  50 . The fastener  48  is sheathed by the stepped cylinder  42  upon insertion to limit insulation  17  tearing. 
     The stepped cylinder  42  is cylindrical and constructed of sheet metal. An aperture or shaftway  50  runs the length of the cylinder  42  allowing for the insertion and sheathing of the fastener  48 . The cylinder  42  contains a wallboard step  52  which is optimally located, when inserted within the outer wythe  14 , at the intersection of the dry wall  16  and the insulation  17  to provide a seal at such intersection. A thermally-isolating wallboard seal  57  is disposed on the stepped cylinder  42  at the shoulder  53  thereby minimizing thermal transfer. The stepped cylinder  42  has an insulation step  55  which is affixed to the anchor  40  through a welding, compression or similar process, thereby forming a high-strength bond. An insulation seal  58  is disposed on the insulation step  55  adjacent to the juncture of the insulation step  55  and the surface mounted portion  53 . Upon insertion of the assembly  12  into the layers of the inner wythe  14 , the anchor  40  rests snugly against the opening formed by the insertion of the stepped cylinder  42  and serves to provide further sealing of the stepped cylinder  42  insertion opening in the insulation  17  precluding the passage of air and moisture therethrough. This construct maintains the insulation integrity. 
     The anchor  40  contains a receptor aperture  83  formed in the receptor portion  82  adapted to engage a veneer tie  44  and to limit displacement of the outer wythe toward and away from the inner wythe  14 . The veneer tie  44  has an insertion  46  end for disposition in the outer wythe  18  and an interengaging end  49  for disposition in the receptor aperture  83 . In this embodiment the interengaging end  49  is a pair of pintles  75  which are spaced to restrain lateral movement of the outer wythe  18 . The diameter of each pintle  75  is dimensioned to restrain movement of the outer wythe  18  toward and away from the inner wythe  14 . 
     The description which follows is a second embodiment of the L-shaped sheetmetal anchor with tubular leg and anchoring assembly for horizontal surface mounting in a cavity wall. For ease of comprehension, wherever possible similar parts use reference designators 100 units higher than those above. Thus, the stepped cylinder  142  of the second embodiment is analogous to the stepped cylinder  42  of the first embodiment. Referring now to  FIG. 4 , the second embodiment of the assembly is shown and is referred to generally by the numeral  110 . As in the first embodiment, a wall structure similar to that shown in  FIG. 1  is used herein. 
     The assembly  112  is surface mounted to the exterior surface  24  of the inner wythe  14 . In this embodiment like the previous one, insulation  17  is disposed on wallboard  16  and, in turn, on columns  17 . Successive bed joints  26  and  28  are substantially planar and horizontally disposed and formed between courses of bricks  20  forming the outer wythe  18 , and are constructed to receive therewithin the insertion portion  146  of the veneer tie  144 . Being surface mounted onto the inner wythe  14 , the assembly  110  is constructed cooperatively therewith, and as described in greater detail below, is configured to penetrate through the wallboard  16  at a covered insertion point. 
     The tubule-type anchoring system  112  is shown having a tubule and bracket assembly or anchor  140  with a stepped cylinder portion  142  which penetrates the wallboard  16  and insulation  17 . The stepped cylinder  142  has at least a first external diameter or wallboard step  152  and a second external diameter or insulation step  155  arrayed about a common longitudinal axis  147  which is substantially normal to the surface mounted portion  154  of the anchor  140 . The stepped cylinder  142  has a shaftway or aperture therethrough  150  to sheath a fastener  148  and is affixed to the anchor  140 , which is an L-shaped plate with a surface mounted portion  154  and a receptor portion  182  which form a juncture  184  therebetween. The receptor portion  182  extends into the cavity  22  and contains a receptor aperture  183  which is substantially parallel to the juncture  184 . 
     The stepped cylinder  142  is a metal leg constructed from sheet metal such as hot dipped galvanized, stainless and bright basic steel and contains a wallboard step  152  that forms a shoulder  153  between the first external diameter  152  and the second external diameter  155 . A wallboard seal  157  is disposed on the shoulder  153  and is thermally isolating and constructed of compressible nonconductive material which precludes the passage of fluids through the inner wythe  14 . A substantially similarly constructed insulation seal  158  is disposed on the surface mounted portion  154  and surrounds the stepped cylinder portion  142 . 
     At intervals along the outer wythe surface, the anchors  140  are surface-mounted using fastener and seal assemblies  160  which consist of a fastener  148  and a seal  143 . The fastener  148  extends though the shaftway  150  for attachment to the inner wythe  14 . The seal  143  seals the surface mounted portion  154 . The fasteners or self-tapping or self-drilling screws  148  are inserted through the stepped cylinders  142 . In this structure, the stepped cylinders  142  sheath the exterior of mounting hardware  148 . The fasteners  148  are thermally-isolated from the anchor  140  through the use of the seal  143  which is composed of compressible nonconductive material such as neoprene. The seal  143  is disposed about the fastener  148  and seals the shaftway  150 . The fastener  148  is sheathed by the stepped cylinder  142  upon insertion to limit insulation  17  tearing. 
     The stepped cylinder  142  is cylindrical and constructed of sheet metal. An aperture or shaftway  150  runs the length of the cylinder  142  allowing for the insertion and sheathing of the fastener  148 . The cylinder  142  contains a wallboard step  152  which is optimally located, when inserted within the outer wythe  14 , at the intersection of the dry wall  16  and the insulation  17  to provide a seal at such intersection. A thermally-isolating wallboard seal  157  is disposed on stepped cylinder  142  at the shoulder  153  thereby minimizing thermal transfer. The stepped cylinder  142  has an insulation step  155  which is affixed to the anchor  140  through a welding, compression or similar process, thereby forming a high-strength bond. An insulation seal  158  is disposed on the insulation step  155  adjacent to the juncture of the insulation step  155  and the surface mounted portion  154 . Upon insertion of the assembly  112  into the layers of the inner wythe  14 , the anchor  140  rests snugly against the opening formed by the insertion of the stepped cylinder  142  and serves to provide further sealing of the stepped cylinder  142  insertion opening in the insulation  17  precluding the passage of air and moisture therethrough. This construct maintains the insulation integrity. It is within the contemplation of this invention that a coating of sealant or a layer of a polymeric compound—such as a closed-cell foam (not shown) be placed on mounting surface  154  for additional sealing. 
     The anchor  140  contains a receptor aperture  183  formed in the receptor portion  182  adapted to engage a veneer tie  144  and to limit displacement of the outer wythe toward and away from the inner wythe  14 . The veneer tie  144  has an insertion  146  end for disposition in the outer wythe  18  and an interengaging end  149  for disposition in the receptor aperture  183 . In this embodiment the interengaging end  149  is a pair of pintles  175  which are spaced to restrain lateral movement of the outer wythe  18 . The diameter of each pintle  175  is dimensioned to restrain movement of the outer wythe  18  toward and away from the inner wythe  14 . The pair of pintles  175  are spring mounted with each one of the pair of pintles  175  urged by spring loading against one end of the receptor aperture  183 . The insertion portion  146  of the veneer tie  144  is swaged in one or more places  191  and  193  to accommodate a reinforcement wire  171  to form a seismic construct upon insertion within the outer wythe  18 . 
     The description which follows is a third embodiment of the L-shaped sheetmetal anchor with tubular leg and anchoring assembly for vertical surface mounting in a cavity wall. For ease of comprehension, wherever possible similar parts use reference designators 200 units higher than those above. Thus, the stepped cylinder  242  of the third embodiment is analogous to the stepped cylinder  42  of the first embodiment. Referring now to  FIG. 5 through 7 , the third embodiment of the assembly is shown and is referred to generally by the numeral  210 . As in the first embodiment, a wall structure similar to that shown in  FIG. 1  is used herein. 
     The assembly  212  is surface mounted to the exterior surface  224  of the inner wythe  214 . In this embodiment like the previous one, insulation  229  is disposed on wallboard  216  and, in turn, on columns  217 . Successive bed joints  226  and  228  are substantially planar to the z-axis  238  and horizontally disposed and formed between courses of bricks  220  forming the outer wythe  218 , and are constructed to receive therewithin the insertion portion  246  of the veneer tie  244 . Being surface mounted onto the inner wythe  214 , the assembly  210  is constructed cooperatively therewith, and as described in greater detail below, is configured to penetrate through the wallboard  216  at a covered insertion point. 
     The tubule-type anchoring system  212  is shown having a tubule and bracket assembly  240  with a stepped cylinder portion  242  which penetrates the wallboard  216  and insulation  229 . The stepped cylinder  242  has at least a first external diameter or wallboard step  252  and a second external diameter or insulation step  255  arrayed about a common longitudinal axis  247  which is substantially normal to the surface mounted portion  254  of the assembly  240 . The stepped cylinder  242  has a shaftway or aperture therethrough  250  to sheath a fastener  248  and is affixed to the anchor or assembly  240 , which is an L-shaped plate with a surface mounted portion  254  and a receptor portion  282  which form a juncture  284  therebetween. The receptor portion  282  extends into the cavity  222  and contains a receptor aperture  283  which is disposed in a substantially vertical plan in the cavity  222  and is substantially parallel to the juncture  284 . 
     The stepped cylinder  242  is a metal leg constructed from sheet metal such as hot dipped galvanized, stainless and bright basic steel and contains a wallboard step  252  that forms a shoulder  253  between the first external diameter  252  and the second external diameter  255 . A wallboard seal  257  is disposed on the shoulder  253  and is thermally isolating and constructed of compressible nonconductive material which precludes the passage of fluids through the inner wythe  214 . A substantially similarly constructed insulation seal  258  is disposed on the surface mounted portion  254  surround the stepped cylinder portion  242 . 
     At intervals along the outer wythe surface, the anchors  240  are surface-mounted using fastener and seal assemblies  260  which each consist of a fastener  248  and a seal  243 . The fastener  248  extends though the shaftway  250  for attachment to the inner wythe  214 . The seal  243  seals the surface mounted portion  254 . The fasteners or self-tapping or self-drilling screws  248  are inserted through the stepped cylinders  242 . In this structure, the stepped cylinders  242  sheath the exterior of mounting hardware  248 . The fasteners  248  are thermally-isolated from the anchor  240  through the use of the seal  243  which is composed of compressible nonconductive material such as neoprene. The seal  243  is disposed about the fastener  248  and seals the shaftway  250 . The fastener  248  is sheathed by the stepped cylinder  242  upon insertion to limit insulation  229  tearing. 
     The stepped cylinder  242  is cylindrical and constructed of sheet metal. An aperture or shaftway  250  runs the length of the cylinder  242  allowing for the insertion and sheathing of the fastener  248 . The cylinder  242  contains a wallboard step  252  which is optimally located, when inserted within the outer wythe  214 , at the intersection of the dry wall  216  and the insulation  229  to provide a seal at such intersection. A thermally-isolating wallboard seal  257  is disposed on the stepped cylinder  242  at the shoulder  253  thereby minimizing thermal transfer. The stepped cylinder  242  has an insulation step  255  which is affixed to the anchor  240  through a welding, compression or similar process, thereby forming a high-strength bond. An insulation seal  258  is disposed on the insulation step  255  adjacent to the juncture of the insulation step  255  and the surface mounted portion  254 . Upon insertion of the assembly  212  into the layers of the inner wythe  214 , the anchor  240  rests snugly against the opening formed by the insertion of the stepped cylinder  242  and serves to provide further sealing of the stepped cylinder  242  insertion opening in the insulation  229  precluding the passage of air and moisture therethrough. This construct maintains the insulation integrity. It is within the contemplation of this invention that a coating of sealant or a layer of a polymeric compound—such as a closed-cell foam (not shown) be placed on mounting surface  254  for additional sealing. 
     The anchor  240  contains a receptor aperture  283  formed in the receptor portion  282  adapted to engage a veneer tie  244  and to limit displacement of the outer wythe toward and away from the inner wythe  214 . The veneer tie  244  is a V-shaped body having side portions  294  and  296  disposed through the receptor aperture  283 . The veneer tie is adjustably mounted upwardly and downwardly and the insertion insertion end or insertion portion  246  is substantially horizontally disposed in the outer wythe  218 . For interconnection with a reinforcement wire  271 , the insertion portion  246  has two arms  298  and  299  which lie on each side of the reinforcement wire  271 . For further interconnection with the reinforcement wire  271  one arm  298  is optionally swaged  297  to accommodate the reinforcement wire  271  and forms a seismic construct upon insertion within the outer wythe  218 . 
     In the above description of the L-shaped sheetmetal anchor with tubular leg and anchoring assembly for surface mounting in a cavity wall of this invention sets forth various described configurations and applications thereof in corresponding anchoring systems. Because many varying and different embodiments may be made within the scope of the inventive concept herein taught, and because many modifications may be made in the embodiments herein detailed in accordance with the descriptive requirement of the law, it is to be understood that the details herein are to be interpreted as illustrative and not in a limiting sense. 
     The L-shaped sheetmetal anchor with tubular leg and anchoring assembly for surface mounting in a cavity wall of this invention is a new and novel invention which improves on the prior art anchoring systems. The assemblies are adaptable to varied anchor structures for use with interlocking veneer ties and reinforcement wires to provide a high-strength surface mounted anchoring system for cavity walls. The stepped cylinders sheath the mounting hardware to limit insulation tearing and resultant loss of insulation integrity. Further, the assemblies are specially configured and thermally-isolated through the use of a series of strategically placed neoprene fittings which serve to disrupt thermal conductivity between the anchoring system and the inner wythe.