Sprinkler system
FIG. 1 is a perspective view taken from the  top and terminal end of a sprinkler system  showing my new  design, the center being broken away to indicate indeterminate length; 
     FIG. 2 is a front perspective view of a first  block, the rear being plain and unornamented; 
     FIG. 3 is a front perspective view of a middle  block; 
     FIG. 4 is an elevational view taken from the  hose connecting end of FIG. 2; 
     FIG. 5 is a bottom plan view of FIG. 2; and 
     FIG. 6 is a cross-sectional view taken on line  6--6 of FIG. 1. 
     The broken line representation of a hose, the ground and water spray in FIG. 1 is for purposes of illustration only.