You are an expert at summarizing long articles. Proceed to summarize the following text:

You are an expert at summarizing long articles. Proceed to summarize the following text: 
CROSS REFERENCE TO RELATED APPLICATIONS 
   Not Applicable 
   STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT 
   Not Applicable 
   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   This invention relates to tools for aligning concrete blocks in construction and particularly to spacers that are used to align concrete blocks. 
   2. Description of the Prior Art 
   In masonry construction, one of the most used items is the ubiquitous concrete block. These blocks are used to build everything from foundation and walls to backyard bar-b-ques. These blocks are designed to assemble easily and quickly. However, a block construction must be monitored to ensure that the particular construction (e.g., a wall) remains level, plumb and square, with the courses of block remaining in proper alignment throughout the construction. This is a constant problem for experienced professional, it is even more problematic for less skilled workers, especially in a stack bond type of construction. 
   Thus, it takes a substantial amount of time to ensure that the construction remains level, plumb and square, with the courses of block remaining in proper alignment throughout the construction. 
   BRIEF DESCRIPTION OF THE INVENTION 
   The instant invention overcomes this problem. It is a spacer that attaches to wire grids used in laying concrete block or similar type block. A number of spacers are used to lay out a pattern in the block. The spacers have fingers that extend upward from the spacers. These fingers are used to align the blocks, above and below, to assure that each course remains level, plumb and square, with the courses of block remaining in proper alignment throughout the construction. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a top plan view of the invention. 
       FIG. 2  is a bottom plan view of the invention. 
       FIG. 3  is a left side elevation view of the invention. 
       FIG. 4  is a rear elevation view of the invention. 
       FIG. 5  is a front elevation view of the invention. 
       FIG. 6  is a top plan view of a section of reinforcing bar. 
       FIG. 7  is a top plan view of a section of reinforcing bar showing the invention spacers in place in the preferred mounting pattern. 
       FIG. 8  is a top plan view of a section of reinforcing bar showing the invention spacers in place on a row of blocks, being configured for a stack bond. 
       FIG. 9  is a top plan view of a section of reinforcing bar showing the invention spacers in place on a row of half-blocks, being configured for a stack bond. 
       FIG. 10  is a top plan view of a section of reinforcing bar showing the invention spacers in place on a row of blocks, being configured for a running bond. 
       FIG. 11  is a top plan view of a section of reinforcing bar showing the invention spacers in place on a row of blocks, being configured for a running bond with a single second-course block in place, forming a running bond. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   Referring now to  FIGS. 1-5 , the invention  1  is shown. The invention is a small spacer that is designed to fit over reinforcing wire. The reinforcing wire is then placed over a course of concrete block. The invention spacers align with the ends of the blocks. This ensures that the blocks are properly aligned as the courses are added. 
   The configuration shown is primarily used in a stack bond type construction. In a stack bond, the block joints line up vertically with each other on every course. In such construction, proper alignment of the blocks is essential to making a strong and aesthetically pleasing wall. 
     FIG. 1  is a top plan view of the invention  1 . The invention is a formed spacer, preferably made of plastic or similar materials. The spacer forms a “T” shaped member made up of a lateral body  3  and a perpendicular body  4 . The perpendicular body  4  has an alignment finger  5  that extends upward above the lateral body (see, e.g.,  FIG. 3 ). This finger provides the alignment function, as discussed below. 
     FIG. 2  is a bottom plan view of the invention. Here, the lateral body  3  and perpendicular body  4  form a common base. Two grooves  6  and  7  are formed in the base as shown. These grooves align with spacer onto the reinforcing wire, as discussed below. 
     FIG. 3  is a left side elevation view of the invention. Here, the lateral body  3  and groove  6  are shown along with the perpendicular body  4  and the alignment finger  5 . 
     FIG. 4  is a rear elevation view of the invention. In this figure, the alignment finger  5  is shown behind the lateral body  3 . Note also that groove  7  is shown in this view. In the preferred embodiment, the top surface of the lateral body  3  is curved. Of course, this body can have a straight or angled top as well. 
     FIG. 5  is a front elevation view of the invention. Here, the alignment finger  5  is shown in front of the lateral body  3 . The perpendicular body  4  is shown extending forward from the lateral body. Note that in the front portion of the perpendicular body  4 , the groove  7  is slightly narrower. This allows the spacer to snap onto the reinforcing wire to ensure a secure grip. 
     FIG. 6  is a top plan view of a section of reinforcing wire. This wire  100  has two parallel members  101  that are connected by perpendicular braces  122 . The wire thus forms a rectangular grid that aligns with the form of a typical concrete block, with the parallel members aligning with the sidewalls of the block and the perpendicular braces aligning with the webs of the block. This pattern allows the invention to work. 
     FIG. 7  is a top plan view of a section of reinforcing bar showing the invention spacers in place in a mounting pattern for a running bond. Here, six spacers  1  are placed on the reinforcing wire as shown. The two spacers  1  mounted on the top of the figure are positioned with the alignment fingers  5  pointing upward. The two spacers in the center of the figure have the alignment fingers  5  pointing downward. Here, the grooves  6  and  7  can be seen fitting over the parallel members and perpendicular braces. Finally, the two spacers  1  mounted on the bottom of the figure are positioned with the alignment fingers  5  pointing upward. This produces an alternating pattern that is used to align the block. 
   Once a line of block has been placed, the reinforcing wire, with the spacers attached can be placed over the blocks. The alignment fingers  5  fit between the ends of the block and are placed tight against edge. There are three main configurations of block construction: a stack bond, a stack bond with half-blocks and a running bond. 
     FIG. 8  is a top plan view of a section of reinforcing bar showing the invention spacers in place on a row of blocks, being configured for a stack bond. With normal spacing, the two alignment fingers  5  at the top of  FIG. 8  fit on the end of one block  120 . In a stack bond of full blocks, there are no alignment fingers placed on the center wires  122  as shown. The alignment fingers at the center of  FIG. 8  fit between block  120  and adjoining block  125 . The spacers at the bottom of the wire align with the bottom block  125 . As the next course of block is placed, the edges of the block align with the edges of the blocks in the first course. That makes a stack bond. Note that the wires shown in  FIGS. 7-11  show only a small portion of reinforcing wire. In reality, this pattern runs for several feet. 
     FIG. 9  is a top plan view of a section of reinforcing bar showing the invention spacers in place on a row of half-blocks, being configured for a stack bond. Here, half-blocks  130  are used. As before the spacers  1  are placed at the ends of each block. Here, however, the spacers  1  must also be placed on the center wires  122 . This allows the half-blocks to be properly aligned as in the case of full blocks. 
   The third configuration is the running bond.  FIG. 10  shows a row of blocks with the spacers in place on a reinforcing wire. With normal spacing, the two spacers  1  are aligned with the end of one block  140 . Note that for a running bond, spacers are also placed on the center wires  122 . Here, alignment fingers  5  are inverted. This allows the alignment fingers to align then ext course (as discussed below). The next pair of spacers  1  aligns with the rear end of block  140  and the front end of block  145 . This pattern then repeats for the length of the wall. 
   In a running bond, as the next course of block is placed, the edges of the upper block are typically offset from the ends of the lower course. To ensure proper alignment, the end of the block in the next course aligns with the alignment fingers of the center pair of spacers.  FIG. 11  is a top plan view of a section of reinforcing bar showing the invention spacers in place on a row of blocks, being configured for a running bond with a single second-course block  150  in place, forming a running bond. As the figure shows, the alignment fingers  5  from below align with the ends of block  150 . This operation is repeated with each new course with the alignment spacers in place, thereby ensuring that each course is properly aligned as the construction continues. 
   The present disclosure should not be construed in any limited sense other than that limited by the scope of the claims having regard to the teachings herein and the prior art being apparent with the preferred form of the invention disclosed herein and which reveals details of structure of a preferred form necessary for a better understanding of the invention and may be subject to change by skilled persons within the scope of the invention without departing from the concept thereof.

Summary:
A spacer that attaches to wire grids used in laying concrete block or similar type block. A number of spacers are used to lay out a pattern in the block. The spacers have fingers that extend upward from the spacers. These fingers are used to align the blocks, above and below, to assure that each course remains level, plumb and square, with the courses of block remaining in proper alignment throughout the construction.