Dryer control apparatus

Claim 1

A CONTROL SYSTEM FOR A CLOTHES DRYER HAVING MEANS FORMING A DRYING CHAMBER, MEANS FOR CIRCULATING AIR THROUGH SAID CHAMBER AND HEATING MEANS FOR HEATING SAID AIR AND COMPRISING, MEANS FOR SELECTIVELY ENERGIZING SAID CIRCULATING MEANS AND SAID HEATING MEANS, MOTOR DRIVEN TIMING MEANS OPERABLE FOR ACTUATING SAID SELECTIVELY ENERGIZING MEANS THROUGHOUT A DRYING CYCLE OF PREDETERMINED TIME, FIRST TEMPERATURE SENSITIVE SWITCH MEANS OPERABLY RESPONSIVE TO THE TEMPERATURE OF AIR ENTERING SAID DRYING CHAMBER AND HAVING A FIRST POSITION IN SERIES ELECTRICAL FLOW RELATIONSHIP WITH THE MOTOR FOR SAID TIMING MEANS WHEN THE TEMPERATURE OF THE ENTERING AIR IS BELOW 140*F. AND A SECOND POSITION IS SERIES WITH SAID HEATING MEANS WHEN THE TEMPERATURE OF SAID ENTERING AIR IS ABOVE 140*F., SECOND TEMPERATURE SENSITIVE SWITCH MEANS OPERABLY RESPONSIVE TO THE TEMPERATURE OF AIR LEAVING SAID DRYING CHAMBER AND IN SERIES ELECTRICAL FLOW RELATIONSHIP WITH SAID HEATING MEANS AND HAVING A CLOSED POSITION WHEN THE TEMPERATURE OF SAID LEAVING AIR IS BELOW 140*F. TO ENERGIZE SAID HEATING MEANS AND AN OPEN POSITION WHEN THE TEMPERATURE OF SAID LEAVING AIR IS ABOVE 140*F. TO DEENERGIZE SAID HEATING MEANS, AND BY-PASS MEANS ACTUATED BY SAID TIMING MEANS AND IN SERIES ELECTRICAL FLOW RELATIONSHIP WITH SAID HEATING MEANS AND SAID SECOND TEMPERATURE SENSITIVE SWITCH MEANS AND IN SHUNT RELATION TO SAID FIRST TEMPERATURE SENSITIVE SWITCH MEANS FOR BY-PASSING SAID FIRST TEMPERATURE SENSITIVE SWITCH MEANS FOR A PREDETERMINED TIMED PERIOD SUFFICIENT TO PERMIT SAID FIRST TEMPERATURE SENSITIVE SWITCH MEANS TO MOVE FROM ITS FIRST POSITION TO ITS SECOND POSITION, THEREAFTER SAID SECOND TEMPERATURE SENSITIVE SWITCH MEANS OPERATING TO MAINTAIN THE TEMPERATURE OF SAID LEAVING AIR AT 140*F. ONLY UNTIL SAID FIRST TEMPERATURE SENSITIVE SWITCH MEANS IN RESPONSE TO A SENSED INLET TEMPERATURE BELOW 140*F. RETURNS TO SAID FIRST POSITION SEQUENTIALLY FIRST TO DE-ENERGIZE SAID HEATING MEANS AND THEN TO OPERATE SAID TIMING MEANS TO DEENERGIZE SAID CIRCULATING MEANS AND THE MOTOR OF SAID TIMING MEANS TO TERMINATE THE DRYING CYCLE.