FIG. 1 is a front view of a clamp showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a right side view thereof, a left side view being the same as the right side view;
FIG. 5 is an enlarged sectional view thereof taken along line 6—6; and,
FIG. 6 is a sectional view thereof taken along line 7—7 in FIG. 4.
The broken line showing of the top part of the clamp is included for the purpose of illustrating environment and forms no part of the claimed design.