FIG. 1 is a front view of a blade for spiral wing shaft for mixers showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a cross-sectional view taken along line 7—7 in FIG. 6; and,
FIG. 8 is a cross-sectional view taken along line 8—8 in FIG. 6.