Abstract:
A method and apparatus for installing elevator car and counterweight guide rails within an elevator hoistway of a building that requires no welding operations to be performed in order to connect the brackets together. The connector brackets of the invention include cooperating support and connector brackets each having a plurality of strategically arranged, indexable connector holes that permit the necessary degree of adjustment of the brackets to properly position the guide rails within the hoistway. Specially configured connector bolts are provided which impart substantial structural integrity to the interconnected bracket and positively preclude shifting of the interconnected brackets even as a result of projected seismic loading.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates generally to elevator systems. More particularly, the invention concerns novel connector brackets and the method of using the same for installing elevator car and counterweight guide rails within an elevator shaft. 
     2. Discussion of the Prior Art 
     A typical prior art electric power elevator system has an elevator shaft or hoistway within which guide rails are mounted to guide the vertical travel of elevator cars and counterweights. As a general rule, two elevator car guide rails and two counterweight guide rails are affixed to the building structure at spaced-apart locations. 
     In a typical prior art construction, a plurality of first support right angle brackets are connected at vertically spaced locations to the walls of the building structure that form the elevator shaft. By way of example, when poured concrete walls define the hoistway of the building structure, anchor bolts or like connectors are used to securely affix the first legs of each of the first brackets to the concrete walls. When steel beams define the hoistway of the building structure, the first leg of each of the brackets is generally welded to the steel beams at selected, spaced-apart locations. To position the car rails and counterweight rails within the hoistway, the outwardly protruding second legs of the first and second brackets are first clamped together in proper alignment and then are permanently connected together by welding. When the distance between the walls that define the hoistway and the guide rails is substantial, spanner plates are typically used to span and connect together the second legs of the first and second right angle brackets. When the car guide rails and the counterweight guide rails are correctly positioned within the hoistway of the building, conventional roller assemblies mounted on the cars and on the counterweight assemblies travel along the guide rails to guide the vertical travel of the cars and counterweight assemblies within the hoistway. 
     Similar constructions are employed in typical prior art hydraulic power elevator systems. However, in such systems, counterweights are not used and, therefore, only elevator car guide rails need to be installed within the building hoistway. The elevator car guide rails of the hydraulic systems are usually quite similar to those used in electric power systems and are typically installed in a similar manner. 
     In accordance with typical prior art installation procedures, a plumb line is first established within the hoistway along a vertical line that is intended to locate the faces of the second guide rail right angle brackets to which the guide rail is to be connected. Because of the vagaries of building construction, the brackets typically do not initially align with the plumb line and often considerable adjustment is required prior to finally permanently interconnecting the guide rail brackets with the support brackets that are affixed to the walls of to hoistway. As a general rule, in initially positioning the guide rails within the hoistway, the guide rail or second angle brackets must be moved within a generally horizontal plane toward and away from and also from side to side relative to the support brackets. After the rail brackets are appropriately positioned relative to the support brackets they are temporarily connected to the support brackets by suitable clamps. With the brackets thusly clamped together, they are permanently connected by welding the horizontally extending legs of the rail brackets to the horizontally extending legs of the support brackets. This done, the elevator car roller assemblies and the counterweight roller assemblies are operably interconnected with their respective guide rails. 
     The prior art installation methods described in the preceding paragraph are cumbersome and time consuming even in new construction. However, in retrofit constructions, the procedures are particularly difficult. For example, when the elevator systems in hospitals, schools, and other public buildings are retrofitted, the welding step is quite hazardous and most undesirable. This is because, during the retrofit operations, welding of the rail brackets to the support brackets results in noxious welding gases and fumes unavoidably spreading throughout the building. Particularly in hospitals and schools, these noxious welding gases can be both unpleasant and hazardous and can, on occasion, result in serious complications to the persons exposed to the noxious fumes. 
     It is this major drawback of the prior art processes that the present invention seeks to avoid by providing uniquely configured, readily adjustable support and guide rail brackets that can be safely and securely interconnected together by special bolts rather than by welding. As will be better understood from the description which follows, the connector legs of the support and guide rail brackets of the present invention are provided with a plurality of strategically arranged, indexable connector holes that permit the necessary degree of adjustment of the brackets to properly position the guide rails within the hoistway. When selected pairs of connector holes provided in the brackets are appropriately aligned, the brackets can be securely bolted together using specially configured bolts that provide substantial structural integrity and positively preclude shifting of the brackets even as a result of projected seismic loading. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide novel connector brackets and the method of using the same for quickly, easily, and accurately for installing elevator car and counterweight guide rails within an elevator hoistway of a building. 
     Another object of the invention is to provide a method of the aforementioned character which requires no welding operations to be performed in order to connect the brackets together. 
     Another object of the invention is to provide connector brackets of the character described which include cooperating support and connector brackets each having a plurality of strategically arranged, indexable connector holes that permit the necessary degree of adjustment of the brackets to properly position the guide rails within the hoistway. 
     Another object of the invention is to provide an apparatus as described in the preceding paragraphs that includes specially configured connector bolts that provide substantial structural integrity and positively preclude shifting of the brackets even as a result of projected seismic loading. 
    
    
     DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a generally perspective, illustrative view of a typical prior art electric power elevator system. 
     FIG. 1A is a top plan view of a typical prior art electric power elevator system showing the elevator car, the counterweights and the guide rails positioned within the elevator hoistway. 
     FIG. 2 is a generally perspective, illustrative view of a typical prior art hydraulic elevator system. 
     FIG. 3 is a greatly enlarged, side-elevational view, partly in cross section showing the prior art welded connection of a support bracket and a connector bracket of the character generally used to suitably mount the elevator car rails in a prior art elevator system. 
     FIG. 4 is a top view, partly in cross section of the prior art welded connection shown in FIG.  3 . 
     FIG. 5 is a view taken along lines  5 — 5  of FIG.  3 . 
     FIG. 6 is a greatly enlarged, generally perspective, exploded view of one form of the novel connector apparatus of the present invention for interconnecting an elevator car guide rail to the building structure that defines the elevator shaft. 
     FIG. 7 is a greatly enlarged, generally perspective, exploded view of an alternative form of a connector apparatus of the present invention for interconnecting counterweight guide rails to the building structure that defines the elevator shaft. 
     FIGS. 8 and 9, when considered together, comprise a top view, partly in cross section, of the installation of the counterweight guide rails within the elevator shaft. 
     FIGS. 10 and 11, when considered together, comprise a top view, partly in cross section of the installation of the elevator car guide rails within the elevator shaft. 
     FIG. 12 is a top plan view similar to FIG. 8 illustrating the sliding movement of the second counterweight bracket relative to the first counterweight bracket in a direction toward structural wall  40  to indexably align selected through holes in the brackets. 
     FIG. 13 is a top plan view similar to FIG. 12, but illustrating the sliding movement of the second counterweight bracket relative to the first counterweight bracket in a transverse direction to indexably align selected through holes in the brackets. 
     FIG. 14 is a top plan view similar to FIG. 11 illustrating the sliding movement of the second elevator car bracket relative to the first elevator car bracket in a direction perpendicular to structural wall  40  to indexably align selected through holes in the brackets. 
     FIG. 15 is a top plan view similar to FIG. 14, but illustrating the sliding movement of the second elevator car bracket relative to the first elevator car bracket in a transverse direction to indexably align selected through holes in the brackets. 
     FIG. 16 is a view taken along lines  16 — 16  of FIG.  14 . 
     FIG. 17 is a cross-sectional view taken along lines  17 — 17  of FIG.  16 . 
     FIG. 18 is a view taken along lines  18 — 18  of FIG.  16 . 
     FIG. 19 is a top plan view of an alternate form of the support and connector brackets of the invention. 
     FIG. 20 is a top plan view of still another form of the support and connector brackets of the invention. 
     FIG. 21 is a side-elevational view illustrating the use of a spanner plate to interconnect together the support and connector brackets of the invention. 
     FIG. 22 is a generally perspective, exploded view of the construction shown in FIG. 21 showing the hole patterns in the support bracket, connector bracket and spanner plate. 
     FIG. 23 is a top plan view of yet another form of support bracket and connector bracket of the invention in which a multiplicity of generally circular through holes are formed in the brackets. 
    
    
     DESCRIPTION OF THE INVENTION 
     Referring to the drawings and particularly to FIGS. 1 and 1A, one form of a typical prior art electric-power elevator system is there shown. The elevator system is shown installed within an elevator shaft or a hoistway  20  that is defined by four spaced-apart concrete sidewalls. Reciprocally movable along spaced-apart guide rails  22  is an elevator car  24 . Also mounted within shaft  20  is a conventional counterweight system which is made up of a plurality of counterweights  26  that are reciprocally movable within shaft  20  along a pair of spaced-apart guide rails  28 . 
     FIG. 2 illustrates a typical prior art hydraulically operated elevator system. The hydraulically operated elevator system also comprises an elevator car  30  that is reciprocally movable within an elevator shaft or hoistway  32 . As in the electric power elevator system, car  30  moves along a pair of spaced-apart guide rails  34  that are attached to the side walls of the building structure that defines elevator shaft  32 . The guide rails  34  are of similar construction and operation to guide rails  22 . 
     Referring particularly to FIGS. 1 and 3, it can be seen that in a typical prior art electric power elevator system a plurality of first support brackets  38  are connected at vertically spaced locations to the concrete walls  40  (FIG. 3) that define the hoistway or elevator shaft  20 . As best seen by referring to FIG. 3, the support brackets  38 , which are connected to the concrete walls by suitable concrete connectors  42 , comprise angle iron or steel brackets of the right angle configuration shown in FIGS. 3,  4 , and  5 . Connected to brackets  38  as by welding are a plurality of vertically spaced-apart support brackets  44  to which guide rails  46  are suitably interconnected in the manner shown in FIGS. 3,  4 , and  5 . Brackets  44 , which are right angle iron or steel brackets are interconnected with guide rails  46  by bolt connector devices generally designated in the drawings by the numeral  47 . As depicted in FIGS. 1,  3 , and  5 , the elevator car apparatus includes spaced-apart rollers “R” which are positioned to roll along rails  46  and guide the travel of the elevator car  24  upwardly and downwardly within the elevator shaft. As illustrated in FIG. 2, brackets  38  and  44 , that are provided in the hydraulically operated system there shown, are of similar construction and operation to those illustrated in FIGS. 3 through 5. 
     In the prior art, connector systems of the character illustrated in FIGS. 1 through 5 are typically used in the installation and retrofit of elevator car and counterweight guide rails. As previously mentioned, when retrofit operations take place in schools, hospitals, and like facilities, the exposure of individuals within these facilities to noxious welding gases and fumes is highly undesirable and can be detrimental to the health of the individuals. For this reason, the inventor named herein has devised a new a novel method and apparatus for installing elevator car and counterweight guide rails that eliminates the need for welding while at the same time providing a structural system that has overall structural integrity equal to or better than the prior art welded systems. 
     Turning next to FIG. 6, there is shown one form of the novel connector and support brackets of the present invention for interconnecting a structural component, such as an elevator car with a supporting structure, such as the building structure defining the elevator hoistway. The support, or first bracket, here comprises a right angle bracket  50  having a first generally planar, vertically extending leg  50   a  which is adapted to be connected to the supporting structure such as concrete walls  40  (FIGS. 3 and 4) by means of suitable connectors  42 . First bracket  50  also includes a second, generally planar leg  50   b  that extends substantially perpendicularly outwardly from leg  50   a  in the manner indicated in FIG.  6 . Second leg  50   b  is provided with a plurality of first angularly extending through holes  52  that are disposed along a line  51 . As illustrated in the lower portion of FIG. 6, line  51  extends at an acute angle with respect to a first reference line  53  that extends generally perpendicularly outwardly from first leg  50   a.  Second leg  50   b  of the bracket  50  is also provided with a plurality of angularly extending second through holes  54  that positioned along a line  55 . Line  55  extends at an acute angle with respect to a second reference line  57  that extends generally perpendicularly outward from leg  50   a.  Each of the through holes  52  and  54  formed in leg  50   b  of first bracket  50  are generally rectangular in plan and are of a size and shape to closely receive the square shank portion  60   a  of threaded connector bolts  60  which, in a manner presently to be described, are used to interconnect first support bracket  50  with a second connector bracket  62 . 
     Second, connector bracket  62  includes a generally planar leg  62   a  that is connected by suitable connectors to the structural component which, in this case, comprises a guide rail that is of similar construction to the previously described prior art guide rail  22  (FIG.  1 ). Second bracket  62  also includes a generally planar second leg  62   b  that extends generally perpendicularly outward from leg  62   a  in the manner shown in FIG.  6 . In a manner presently to be described, during the installation step, planar leg  62   b  is slidably movable relative to second leg  50   b  of first support bracket  50  between first and second positions. As indicated in FIG. 6, second leg  62   b  of connector bracket  62  includes a plurality of third, generally rectangularly shaped through holes  64 , which are positioned along a line  65 . As indicated by the upper portion of FIG. 6, line  65  extends at an acute angle with respect to a reference line  67  that extends generally perpendicularly outward from first leg  62   a  of second connector bracket  62 . Leg  62   b  of second connector bracket  62  is also provided with a plurality of generally rectangularly shaped through holes  68  which are positioned along a line  69 . Line  69  extends at an acute angle from a reference line  71  that extends generally perpendicularly outward from leg  62   a  of connector bracket  62 . 
     Through holes  52  are so constructed and arranged that a selected one of the second through holes  64  formed in bracket  62  can be moved into index with a selected one of the through holes  52  by a sliding movement of bracket  62  relative to bracket  50 . Similarly, through holes  54  are constructed and arranged so that a selected one of the fourth through holes  68  formed in bracket  62  can be moved into index with a selected one of the through holes  54  when the second leg  62   b  of second bracket  62  is moved from a first position to a second position relative to bracket  50 . As will be discussed in greater detail in the paragraphs which follow, bracket  62  can be slidably moved relative to bracket  50  in a first direction generally parallel with reference lines  53  and  57  (see FIG. 14) or, alternatively, can be slidably moved in a transverse direction generally perpendicular to reference lines  53  and  57  (see FIG.  15 ). Because of the unique positioning of the first and second sets of through holes in each of the brackets  50  and  62 , a selected two of the through holes of the first and second sets of bracket  62  can be indexably aligned with a selected two of the through holes of bracket  50  by a sliding movement of bracket  62  relative to bracket  50  either inwardly and outwardly or in a transverse direction from a first position to a second position (see FIGS. 10,  11 ,  14 , and  15 ). 
     When the second connector bracket  62  is correctly aligned with support bracket  50  and a selected one of the though holes  64  is indexably aligned with a selected one of the through holes  52 , a first bolt, such as a bolt  60 , can be introduced into the aligned through holes. Similarly, when the second connector bracket  62  is correctly aligned with support bracket  50  and a selected one of the through holes  68  is indexably aligned with a selected one of the through holes  54 , a second bolt, such as a bolt  60 , can be introduced into the aligned through holes. With the bolts  60  in position with the square shank portions thereof closely received within the aligned holes, nuts such as nut  60   b  can be used to securely interconnect connector bracket  62  with support bracket  50  in the manner shown in FIGS. 16 and 18. When the brackets are thusly connected, the square shaped shank portions  60   a  of the bolts  60  will be snugly received within the indexably aligned through holes in the two brackets and will efficiently prevent sliding movement between the brackets even under severe seismic loading (see FIGS.  16  and  18 ). 
     Considering next the method of the invention for interconnecting a guide rail of an elevator system with a structure defining a hoistway within which the elevator travels, one form of the method of the invention comprises the following steps: First, a plurality of elevator car support brackets such as brackets  50  are affixed to the walls  40  that define the hoistway (see FIGS.  1  and  14 ). This done, the correct plumb line location of the elevator car rails within the hoistway is determined by establishing a plumb line within the hoistway in accordance with well known procedures. With the plumb line established and with the support brackets appropriately affixed to the walls of the hoistway, the next step in the method of the invention is to move the second leg  62   b  of the second bracket, such as bracket  62 , into engagement with the second leg  50   b  of a bracket such as bracket  50 . The second bracket is then moved in the directions indicated by the arrows  71  in FIG. 14 to bring the second bracket into correct position with respect to the plumb line and, at the same time, to indexably align a selected one of screw holes  68  with a selected one of screw holes  54  formed in bracket  50 . Additionally, as the second bracket is moved either toward or away from wall  40 , a selected one of the screw holes  67  in the second bracket will indexably align with a selected one of the holes  52  formed in the first bracket  50 . In certain instances, in order to properly align the brackets, bracket  62  must be moved both inwardly and outwardly and transversely relative to bracket  50  as indicated in FIG. 15 by the arrows  73  and  75 . In this instance a different through hole  68  will be aligned with a different through hole  54  and a different through hole  67  will be aligned with a different through hole  52  in the manner shown in FIG.  15 . Once the proper through holes have been aligned in the manner shown in FIG. 15, a first bolt  60  is inserted into the aligned through holes  68  and  54  so that rectangular shank  60   a  is closely received within the indexed holes and a second bolt  60  is inserted into indexed screw holes  67  and  52  in the manner shown in FIG.  14 . The bolts  60  are then appropriately cinched down using nuts  60   b.    
     In the manner illustrated in FIGS. 10 and 11, once second bracket  62  is securely affixed to bracket  50  and is in a proper position relative to the previously established plumb line, the elevator car guide rail can be affixed to second bracket  62  through use of the previously identified rail connector means or connector assemblies  47 . Referring particularly to FIGS. 6 and 10, each connector assembly  47  can be seen to comprise a clamping member  47   a  (FIG. 6) having a bolt receiving bore  47   b  and a hook-like end portion  47   c.  End portions  47   c  of the clamping members grippingly engage the flange portions of the guide rails  22  and are secured thereto by threaded bolts and nuts  49   a  and  49   b  respectively (FIG.  6 ). 
     Turning now to FIG. 7, one form of the connector and support brackets of the invention for use in installing the counterweights of the electric powered elevator systems is there illustrated. These brackets are somewhat similar to the earlier described brackets, but the connector bracket  80  is generally triangular shaped in plan. The support bracket comprises a right angle bracket  82  having a first generally planar, vertically extending leg  82   a  which is adapted to be connected to the supporting structure such as concrete walls  40  (FIGS. 8 and 9) by means of suitable connectors  42 . Bracket  82  also includes a second, generally planar leg  82   b  that extends substantially perpendicularly outwardly from leg  82   a  in the manner indicated in FIG.  7 . Second leg  82   b  is provided with a plurality of first angularly extending through holes  84  that are disposed along a line  85 . As illustrated in the lower portion of FIG. 7, line  85  extends at an acute angle with respect to a first reference line  87  that extends generally perpendicularly outwardly from first leg  82   a.  Second leg  82   b  of the bracket  82  is also provided with a plurality of angularly extending second through holes  88  that extend along a line  89 . Line  89  extends at an acute angle with respect to a second reference line  91  that extends generally perpendicularly outward from leg  82   a.  Each of the though holes  84  and  88  formed in leg  82   b  of first bracket  82  are generally rectangular in plan and are of a size and shape to closely receive the square shank portion  60   a  of threaded connector bolts  60  which are used to interconnect support bracket  82  with connector bracket  80 . 
     Connector bracket  80  includes a first generally planar leg  80   a  that is connected by suitable connectors to the structural component which, in this case, comprises a counterweight guide rail  94  that is of similar construction to the previously described prior art guide rail  22  (FIG.  1 ). Connector bracket  80  also includes a generally planar leg  80   b  that extends generally perpendicularly outward from leg  80   a  in the manner shown in FIG.  7  and further includes an upright flange portion  80   c.  In a manner presently to be described, during the installation step, planar leg  80   b  is slidably movable relative to leg  82   b  of support bracket  82  between first and second positions. As indicated in FIGS. 7,  8 , and  9  leg  80   b  of connector bracket  80  includes a plurality of third, generally rectangularly shaped through holes  96 , which are positioned along a line  97 . As indicated by the upper portion of FIG. 7, line  97  extends at an acute angle with respect to a reference line  99  that extends generally perpendicularly outward from first leg  80   a  of connector bracket  80 . Leg  80   b  of connector bracket  80  is also provided with a plurality of generally rectangularly shaped through holes  100  which are positioned along a line  101  (see FIG.  9 ). Line  101  also extends at an angle from a reference line  99 . 
     Through holes  96  are so constructed and arranged that a selected one of the through holes  96  formed in bracket  80  can be moved into index with a selected one of the through holes  84  by a sliding movement of bracket  80  relative to bracket  82 . Similarly, through holes  100  are constructed and arranged so that a selected one of the through holes  100  formed in bracket  80  can be moved into index with a selected one of the through holes  88  when the leg  80   b  of bracket  80  is moved from a first position to a second position relative to bracket  82 . As was the case with brackets  50  and  62 , bracket  80  can be slidably moved relative to bracket  82  in a first direction generally parallel with reference lines  87  and  91  (FIG. 12) or, alternatively, can be slidably moved in a transverse direction generally perpendicular to reference lines  87  and  91  (FIG.  13 ). As shown in FIG. 12, when bracket  80  is moved toward wall  40 , different pairs of holes  96  and  84  and  100  and  88  will index. Similarly, as depicted in FIG. 13, when bracket  80  is moved in a transverse direction, still other pairs of holes  96  and  84  and  100  and  88  will index. Once the proper through holes have been aligned in the manner shown in FIGS. 8 and 9, bolts  60  are inserted into the aligned through holes so that rectangular shanks  60   a  of the bolts is closely received within the indexed holes. The bolts  60  are then appropriately cinched down using nuts  60   b.  After the support and connector brackets have been thusly connected, the counterweight guide rails  94  can be affixed to the brackets  80  in the manner shown in FIGS. 8 and 9 using appropriate connectors  47 . 
     Referring next to FIGS. 19 and 20, alternate forms of similarly configured elevator support and connector brackets are there shown. In FIG. 19, elevator support and connector brackets  105  and  107  can be seen to have a lesser number of indexable through holes  109  and  111  respectively than do the earlier described brackets. Brackets  105  and  107  can be used in constructions where a minimum amount of adjustment relative to a plumb line is required. In FIG. 20, elevator support and connector brackets  113  and  115  can be seen to have an intermediate number of through holes  117  and  119  respectively. Brackets  113  and  115  can be used in instances where only a moderate degree of adjustment is required to properly position the guide rails within the hoistway. 
     Turning next to FIGS. 21 and 22, still another form of the connector apparatus of the invention is there illustrated. Once again this apparatus is similar in some respects to that previously described and like numbers are used in FIGS. 21 and 22 to identify like components. The primary difference between this latest form of the invention and the earlier described embodiments resides in the fact that the first bracket of the apparatus is provided in two parts. More particularly, the first bracket assembly of this latest form of the invention, which is generally designated in the drawings by the numeral  122 , comprises a first right angle member  124  having a first leg  124   a  adapted to be connected to the supporting structure and a second generally planar leg  124   b  that is integrally formed with leg  124   a.  Member  124  is provided with spaced-apart bores  126  (FIG.  22 ), the purpose of, which will presently be described. Forming the second portion of bracket assembly  122  is a generally planar spanner plate  128 . Spanner plate  128  is provided with spaced-apart bores  130 , which are indexable with bores  126  formed in member  124 . Plate  128  can be removably interconnected with member  124  by threaded connectors such as bolts and nuts  131  and  132  respectively. A plurality of generally rectangularly shaped through holes  134  are provided in spanner plate  128  and are positioned along a first line  136  that extends angularly with respect to a reference line  138  which extends perpendicularly from leg  124   a  of member  124 . Similarly, a plurality of second generally rectangularly shaped through holes  140  are provided in plate  128  along a second line  142  that extends angularly with respect to a reference line  144 . 
     The second bracket of this latest form of the invention is identical to earlier described second bracket and is provided with a plurality of third through holes  68  and a plurality of fourth through holes  64 . After spanner plate  128  has been secured to right angle member  124  and following interconnection of angle member  124  with wall  40  using conventional connectors  125  (FIG.  21 ), second bracket  62  can be slidably positioned relative to spanner plate  128  in the manner previously described to align a selected one of through holes  64  with a selected one of through holes  140  and to align a selected one of through holes  68  with selected one of through holes  134  formed in plate  128 . It is apparent that the use of the spanner plate  128  permits greater degrees of adjustment between the support bracket assembly  122  and the plumb line with which the second bracket  62  is to be aligned so that the guide rail can be affixed to bracket  62  in proper alignment with a plumb line in the manner previously described. When the holes in bracket  62  are properly aligned with the through holes in plate  128 , bolts  60  of the character previously described can be used to interconnect bracket  62  with spanner plate  128  in the manner shown in FIG.  21 . 
     Turning finally to FIG. 23, still another embodiment of the connector apparatus of the invention is there illustrated. As in the earlier forms of the invention, the apparatus here comprises a first bracket  150  having a generally planar leg  152  connected to the supporting structure by appropriate connector means. The apparatus also includes a second bracket  152  having a leg  154  that is adapted to be interconnected with a structural component such as a elevator or counterweight guide rail. Bracket  150  includes a generally planar second leg  156 , while bracket  152  includes a generally planar leg  158 . Bracket  152  is slidably movable relative to bracket  150  in the manner described in connection with the earlier forms of the invention to align selected through holes of a plurality of through holes provided in leg  158  with selected through holes of a plurality of through holes provided in leg  156  of first bracket  150 . Unlike the through holes provided in the earlier described embodiments of the invention, the through holes provided in the brackets of this latest embodiment of the invention are generally circular in shape rather than generally rectangular in shape and are adapted to receive conventional bolts. Additionally in this latest form of the invention, a plurality of rows of generally circular-shaped holes are provided in each of the brackets  150  and  152  and extend angularly with respect to reference lines  159 . More particularly, with respect to bracket  152 , a plurality of first through holes  160   a  are positioned along an angularly extending line  162   a,  while a plurality of first through holes  160   b  are provided along a second angularly extending line  162   b  that is generally parallel with line  162   a.  Additionally, a plurality of first through holes  160   c  are positioned along an angularly extending line  162   c  which is generally parallel to lines  162   a  and  162   b.  In like manner a plurality of second through holes  164   a  are provided in bracket  152  along an angularly extending line  166   a  and a plurality of second through holes  164   b  are positioned along an angularly extending line  166   b  which line is generally parallel with line  166   a.  Additionally, a plurality of second through holes  164   c  are provided along an angularly extending line  166   c  which is generally parallel to lines  166   a  and  166   b.    
     With respect to bracket  150 , a plurality of third holes  168   a  are provided in bracket  156  along an angularly extending line  170   a  and a plurality of third through holes  168   b  are provided along an angularly extending line  170   b.  In like manner, a plurality of third holes  168   c  are provided along an angularly extending line  170   c  which line is generally parallel with lines  170   a  and  170   b.  Similarly, a plurality of fourth through holes  172   a  are positioned along an angularly extending line  174   a  and a plurality of fourth through holes  172   b  are provided along an angularly extending  174   b.  In like manner, a plurality of fourth through holes  172   c  are provided along an angularly extending  174   c  that is generally parallel with lines  174   a  and  174   b.    
     With the construction described in the preceding paragraphs, when bracket  152  is slidably moved relative to bracket  150  forwardly, rearwardly or transversely a selected one of first through holes  160   a,    160   b,  and  160   c  can be moved in to index with a selected one of third through holes  168   a,    168   b,  and  168   c  respectively. Similarly, sliding movement of bracket  152  relative to bracket  150  will result in the alignment of selected one of second through holes  164   a,    164   b  and  164   c  with selected one of fourth through holes  172   a,    172   b,  and  172   c  respectively. After the brackets have been moved into the desired location with respect to a previously established plumb line, they can be interconnected using a plurality of conventional threaded connectors such as conventional bolts and nuts. 
     Having now described the invention in detail in accordance with the requirements of the patent statutes, those skilled in this art will have no difficulty in making changes and modifications in the individual parts or their relative assembly in order to meet specific requirements or conditions. Such changes and modifications may be made without departing from the scope and spirit of the invention, as set forth in the following claims.