FIG. 1 is a perspective view of a herb grinder showing our new design;
  
    FIG. 2 is a front view thereof;
  
    FIG. 3 is a rear view thereof;
  
    FIG. 4 is a bottom view thereof; the top view being a mirror image;
  
    FIG. 5 is a left side view thereof, the right side view being a mirror image;
  
    FIG. 6 is an enlarged sectional view thereof, taken along the line 6-6 of FIG. 2;
  
    FIG. 7 is a perspective view of a second embodiment of the design shown in FIG. 1;
  
    FIG. 8 is a front view of the embodiment shown in FIG. 7;
  
    FIG. 9 is a rear view of the embodiment shown in FIG. 7;
  
    FIG. 10 is a bottom view of the embodiment shown in FIG. 7, the top view being a mirror image;
  
    FIG. 11 is a left side view of the embodiment shown in FIG. 7, the right side view being a mirror image;
  
    FIG. 12 is an enlarged sectional view of the embodiment shown in FIG. 7, taken along the line 12-12 of FIG. 8;
  
    FIG. 13 is a perspective view of a third embodiment of the design shown in FIG. 1;
  
    FIG. 14 is a front view of the embodiment shown in FIG. 13;
  
    FIG. 15 is a rear view of the embodiment shown in FIG. 13;
  
    FIG. 16 is a bottom view of the embodiment shown in FIG. 13, the top view being a mirror image;
  
    FIG. 17 is a left side view of the embodiment shown in FIG. 13, the right side view being a mirror image; and,
  
    FIG. 18 is an enlarged sectional view of the embodiment shown in FIG. 13, taken along the line 18-18 of FIG. 14.