The ornamental design for a safetychainholder, as shown and described.
FIG. 1 is a perspective view of a safety chain holder, showing my new
design, the hinged cover being shown in open position;
FIG. 2 is a partial median vertical longitudinal sectional view with the
hinged cover in closed position, the broken lines illustrating a portion
of a safety chain located within the holder forming no part of the design;
FIG. 3 is a top plan view, showing the hinged cover in closed position;
FIG. 4 is an elevational view of one end, with the hinged cover in closed
position the opposite end being substantially a mirror image thereof; and,