The ornamental design for an insulator for supporting the heating coil of an electricheater, substantially as shown and described.
FIG. 1 is an elevational view taken from one side of an insulator for
supporting the heating coil of an electric heater showing my new design,
the opposite side being a mirror image of the side shown,
FIG. 2 is an elevational view taken from one end thereof, the opposite end
being a mirror image of the end shown, and
FIG. 3 is a cross sectional view taken on line 3--3 of FIG. 1.