The ornamental design for a rope saw, as shown and described.
FIG. 1 is a front and top perspective view of a rope saw, showing my new design;
FIG. 2 is a rear and bottom perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is an enlarged top plan view thereof;
FIG. 8 is an enlarged bottom plan view thereof;
FIG. 9 is an enlarged view of a portion labeled, ‘FIG. 9’ in FIG. 1; and,
FIG. 10 is a perspective view, showing the rope saw in a straight position.
The dash dot dash lines in FIGS. 1 and 9 are for the purpose of depicting the cut line of the enlarged view and form no part of the claim. The rope saw is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.