Cooktop for a gas-fired range

In a gas-fired range, the combination of a gas burner means supported in said range and operable for combustion of a gaseous mixture, a range top surface, the burner means being spaced below said top surface, an annular semi-torroidal concave well support forming an intermediate ring gutter encircling said burner means and terminating at an innermost annular downturned rim flange portion defining an annular lip disposed above the gutter portion, a glass-ceramic plate member comprising an annular plate surface and plural, peripherally spaced, downwardly depending legs on the undersurface of said plate, said plate member and plurality of legs thereon are integral and formed together as a unit from a crystallizable glass material, the lower extremities of said legs each having a contoured lower end surface including a conforming concave notch matching said annular lip of the well support which cooperates with said lip for supporting said plate in stable flat position in an overlying spaced relation to said burner means, said legs maintaining the plate member elevated above and spaced from the range top surface and in overlying spaced relation to said burner means.