Abstract: A thermostatic gas valve includes a thermostatic valve for regulating the temperature of a burner and a manually operable valve for regulating the flame height. The operation of the manual and thermostatic valves is controlled by a stem. The valve includes a shaft coupled to the stem that is axially movable from an off position to a first position. In the first position the shaft is rotated to rotate the manual valve. The shaft may then be axially moved to a second position and rotated to rotate the thermostatic valve to the desired position. The shaft is locked in a first non-rotatable position and prevented from being axially moved by a locking element.

Abstract: A method of forming ports in a fuel burner wherein the ports are formed in a single stroke employing a tool having a plurality of punch members arranged in an array corresponding to the configuration of the burner body that may be a complex shape. The burner body and tool structure are supported for relative movement toward and away from each other. The tool structure and body are moved toward one another to form the array of ports in the burner body in a single relative motion. This motion is terminated before the material punched by the tool is severed from the burner body.

Abstract: An infinite switch for controlling the temperature of a stove heating element is provided with a visual indicator energized when the heating element is energized. The switch has terminals connected to an electrical power source and includes a housing, a cover with a central aperture, and a rotatable, hollow spindle extending through the aperture and into the housing. A cam mounted on the spindle interacts with two sets of switch contact elements. One set of contact elements is movable by the cam from an open to a closed position thereby connecting the power source with the second set of contact elements. The second set of switch contact elements are adjusted by the cam and are operated by a thermomotive element in heat transfer relation with a thermal heating device. The thermomotive element cycles the second set of contacts between open and closed positions alternately to energize and deenergize the heating element. The proportion of on time during each cycle is determined by the position of the cam.