Continuous flow dishwasher and steamer

Claim 2

A STEAM GENERATING APPARATUS COMPRISING, AN ELONGATE RECEPTACLE HAVING SPACED ENDS CONNECTED BY SIDE WALLS DEFINING A CHAMBER, SAID SIDE WALLS BEING OF METAL HAVING SUBSTANTIAL EXPANSION AND CONTRACTION IN RESPONSE TO INCREASE AND DECREASE IN TEMPERATURE, A LIQUID SUPPLY COMMUNICATING WITH THE CHAMBER, A DISCHARGE DUCT COMMUNICATING WITH THE CHAMBER ADJACENT THE UPPER PORTION THEREOF, MEANS IN THE LIQUID SUPPLY OPERATIVE FOR PERMITTING FLOW OF LIQUID TO THE CHAMBER FOR A PREDETERMINED PERIOD WHEREBY LIQUID FILLS SAID CHAMBER AND THEN IS DISCHARGED THROUGH THE DISCHARGE DUCT, AN ELECTRIC HEATER DEVICE IN SAID CHAMBER FOR GENERATING STEAM FROM LIQUID THEREIN, SAID ELECTRIC HEATER BEING POSITIONED ADJACENT THE SIDE WALLS OF THE RECEPTACLE, AND MEANS SELECTIVELY ENERGIZING SAID ELECTRIC HEATER, SAID STEAM GENERATING APPARATUS BEING CHARACTERIZED BY THE EXPANSION AND CONTRACTION BETWEEN HEATING AND COOLING OF SAID SIDE WALLS BEING GREATER THAN THE EXPANSION AND CONTRACTION OF ANY SCALE DEPOSITED FROM GENERATING OF STEAM WHEREBY UPON GENERATING STEAM FROM LIQUID REMAINING IN THE CHAMBER AFTER FLOW OF LIQUID THERETO HAS STOPPED AND THE RECEPTACLE ALLOWED TO COOL ANY SCALE ON THE SIDE WALLS WILL CRACK FROM SAID SIDE WALLS AND BE CARRIED WITH LIQUID FLOWED THROUGH THE CHAMBER AND DISCHARGE DUCT IN THE NEXT SEQUENCE OF OPERATION.

Claim 3

IN A DISHWASHING MACHINE, A CASING DEFINING A WASHING COMPARTMENT HAVING A BOTTOM, MEANS FOR HOLDING ARTICLES TO BE WASHED IN SAID COMPARTMENT IN SPACED RELATION TO SAID BOTTOM, A DRAIN FITTING IN SAID BOTTOM HAVING A LARGE OPENING AT MAXIMUM LIQUID LEVEL AND A RESTRICTED OPENING ADJACENT SAID BOTTOM, HOT WATER SUPPLY MEANS COMMUNICATING WITH SAID COMPARTMENT FOR CONVEYING LIQUID THERETO AT A RATE GREATER THAN THE DRAIN FLOW THROUGH SAID RESTRICTED OPENING AND LESSER THAN THE DRAIN FLOW THROUGH SAID LARGE OPENING, A CLOSED RECEPTACLE IN THE HOT WATER SUPPLY MEANS BETWEEN A SOURCE AND THE COMPARTMENT WITH THE CONNECTION TO THE COMPARTMENT BEING AT THE UPPER PORTION OF SAID RECEPTACLE WHEREBY LIQUID FLOWING THROUGH THE COMPARTMENT FLOWS THROUGH THE RECEPTACLE AND FILLS SAME, AN ELECTRIC HEATING DEVICE IN SAID RECEPTACLE FOR HEATING WATER THEREIN AND GENERATING STEAM, CONTROL MEANS INCLUDING A VALVE IN SAID HOT WATER SUPPLY MEANS UPSTREAM FROM SAID RECEPTACLE FOR PERMITTING FLOW OF HOT WATER THROUGH THE RECEPTACLE AND TO THE WASHING COMPARTMENT FOR A PREDETERMINED PERIOD AND THEN STOPPING FLOW AT THE END THEREOF, AN IMPELLER IN THE WASHING COMPARTMENT, AN ELECTRIC MOTOR FOR OPERATING SAID IMPELLER TO DIRECT WATER AGAINST ARTICLES IN THE COMPARTMENT TO WASH SAID ARTICLES, MEANS FORMING AN ENERGIZING CIRCUIT INCLUDING SAID CONTROL MEANS AND THE ELECTRIC HEATER AND OPERATIVE IN A SEQUENCE WHEREBY THE ELECTRIC MOTOR AFTER FLOW OF WATER TO THE WASHING COMPARTMENT IS STOPPED AND THE ELECTRIC HEATER IS ENERGIZED TO GENERATE STEAM FROM THE WATER REMAINING IN SAID RECEPTACLE FOR DELIVERY OF SAID STEAM AFTER COMPLETION OF THE WASHING CYCLE TO SAID WASHING COMPARTMENT, SAID RECEPTACLE BEING OF METAL HAVING SUBSTANTIAL EXPANSION AND CONTRACTION IN RESPONSE TO INCREASE AND DECREASE IN TEMPERATURE, SWITCH MEANS IN THE ELECTRIC CIRCUIT TO THE ELECTRIC HEATER INCLUDING NORMALLY ENGAGING CONTACTS, AND MEANS SUPPORTING SAID CONTACTS FOR RELATIVE MOVEMENT AND RESPONSIVE TO EXPANSION OF SAID RECEPTACLE BY A PREDETERMINED INCREASE IN TEMPERATURE ABOVE THE BOILING POINT OF WATER TO SEPARATE SAID CONTACTS AND INTERRUPT SAID ENERGIZING CIRCUIT TO THE ELECTRIC HEATER.

Claim 4

IN A DISHWASHING MACHINE, A CASING DEFINING A WASHING COMPARTMENT HAVING A BOTTOM, MEANS FOR HOLDING ARTICLES TO BE WASHED IN SAID COMPARTMENT IN SPACED RELATION TO SAID BOTTOM, A DRAIN FITTING IN SAID BOTTOM HAVING A LARGE OPENING AT MAXIMUM LIQUID LEVEL AND A RESTRICTED OPENING ADJACENT SAID BOTTOM, HOT WATER SUPPLY MEANS COMMUNICATING WITH SAID COMPARTMENT FOR CONVEYING LIQUID THERETO AT A RATE GREATER THAN THE DRAIN FLOW THROUGH SAID RESTRICTED OPENING AND LESSER THAN THE DRAIN FLOW THROUGH SAID LARGE OPENING, A CLOSED RECEPTACLE IN THE HOT WATER SUPPLY MEANS BETWEEN A SOURCE AND THE COMPARTMENT WITH THE CONNECTION TO THE COMPARTMENT BEING AT THE UPPER PORTION OF SAID RECEPTACLE WHEREBY LIQUID FLOWING THROUGH THE COMPARTMENT FLOWS THROUGH THE RECEPTACLE AND FILLS SAME, AN ELECTRIC HEATING DEVICE IN SAID RECEPTACLE FOR HEATING WATER THEREIN AND GENERATING STEAM, CONTROL MEANS INCLUDING A VALVE IN SAID HOT WATER SUPPLY MEANS UPSTREAM FROM SAID RECEPTACLE FOR PERMITTING FLOW OF HOT WATER THROUGH THE RECEPTACLE AND TO THE WASHING COMPARTMENT FOR A PREDETERMINED PERIOD AND THEN STOPPING FLOW AT THE END THEREOF, AN IMPELLER IN THE WASHING COMPARTMENT, AN ELECTRIC MOTOR FOR OPERATING SAID IMPELLER TO DIRECT WATER AGAINST ARTICLES IN THE COMPARTMENT TO WASH SAID ARTICLES, MEANS FORMING AN ENERGIZING CIRCUIT INCLUDING SAID CONTROL MEANS AND THE ELECTRIC HEATER AND OPERATIVE IN A SEQUENCE WHEREBY THE ELECTRIC MOTOR AFTER FLOW OF WATER TO THE WASHING COMPARTMENT IS STOPPED AND THE ELECTRIC HEATER IS ENERGIZED TO GENERATE STEAM FROM THE WATER REMAINING IN SAID RECEPTACLE FOR DELIVERY OF SAID STEAM AFTER COMPLETION OF THE WASHING CYCLE TO SAID WASHING COMPARTMENT, SAID RECEPTACLE BEING OF METAL HAVING SUBSTANTIAL EXPANSION AND CONTRACTION IN RESPONSE TO INCREASE AND DECREASE IN TEMPERATURE, SWITCH MEANS IN THE ELECTRIC CIRCUIT TO THE ELECTRIC HEATER INCLUDING NORMALLY ENGAGING CONTACTS, AND MEANS SUPPORTING SAID CONTACTS FOR RELATIVE MOVEMENT AND RESPONSIVE TO EXPANSION OF SAID RECEPTACLE BY A PREDETERMINED INCREASE IN TEMPERATURE ABOVE THE BOILING POINT OF WATER TO SEPARATE SAID CONTACTS AND INTERRUPT SAID ENERGIZING CIRCUIT TO THE ELECTRIC HEATER.