Automatic heating device

Claim 1

AN ELECTRIC HEATING DEVICE COMPRISING AN OPEN TOP VESSEL, AN ELECTRIC HEATING ELEMENT IN GOOD HEAT EXCHANGE RELATIONSHIP WITH THE BOTTOM OF SAID VESSEL, RIGID TERMINALS ELECTRICALLY CONNECTED TO THE ENDS OF SAID HEATING ELEMENT AND DEPENDING FROM THE BOTTOM OF SAID VESSEL BUT ELECTRICALLY INSULATED THEREFROM, A STUD DEPENDING FROM THE BOTTOM OF SAID VESSEL AND HAVING ONE END SECURED TO THE BOTTOM OF SAID VESSEL, TEMPERATURE RESPONSIVE MEANS FOR CONTROLLING THE FLOW OF CURRENT TO SAID HEATING ELEMENT SECURED TO THE BOTTOM OF SAID VESSEL SOLELY BY SAID STUD, SAID TEMPERATURE RESPONSIVE MEANS COMPRISING A BIMETALLIC ELEMENT HAVING ONE END THEREOF IN GOOD HEAT EXCHANGE RELATIONSHIP WITH THE BOTTOM OF SAID VESSEL, SAID TEMPERATURE RESPONSIVE MEANS IN ADDITION TO SAID BIMETALLIC ELEMENT INCLUDING A TERMINAL BRACKET AND A PIVOT BRACKET, SAID STUD SECURING SAID BRACKETS AND SAID BIMETALLIC ELEMENT TO THE BOTTOM OF SAID VESSEL IN STACKED RELATIONSHIP, COOPERATING MEANS ON SAID BRACKETS FOR ORIENTATING THEM IN FIXED RELATIONSHIP TO EACH OTHER RELATIVE TO MOVEMENT ABOUT THE LONGITUDINAL AXIS OF SAID STUD, MEANS ON ONE OF SAID BRACKETS COOPERATING WITH THE BOTTOM OF SAID VESSEL FOR PREVENTING RELATIVE ROTATION OF SAID ONE BRACKET ABOUT SAID LONGITUDINAL AXIS OF SAID STUD THEREBY FIXEDLY SECURING SAID BRACKETS AND SAID BIMETALLIC ELEMENTS TO SAID VESSEL, AN ELECTRICAL CIRCUIT MEANS INCLUDING RELATIVELY MOVABLE CONTACTS CONNECTED TO SAID RIGID TERMINALS, AT LEAST PART OF SAID CIRCUIT MEANS BEING SUPPORTED BY ONE OF SAID BRACKETS, MEANS PIVOTALLY RELATED TO SAID PIVOT BRACKET AND MOVABLE WITH A SNAP ACTION RELATIVE THERETO FOR CAUSING OPENING OF SAID CONTACTS WHEN IN ONE PREDETERMINED POSITION, AND MEANS ON SAID LAST-MENTIONED MEANS ENGAGEABLE BY SAID BIMETALLIC ELEMENT FOR OPENING SAID CONTACTS IN RESPONSE TO DEFLECTION OF SAID BIMETALLIC ELEMENT.