Thermostatic control device

Claim 1

IN A THERMOSTATIC CONTROL DEVICE FOR CONTROLLING THE TEMPERATURE OF A SPACE BEING HEATED, A NORMALLY CLOSED SNAP-ACTING SWITCH, A THERMOSTATIC ELEMENT OPERATIVE TO ACTUATE SAID SWITCH TO AN OPEN POSITION IN RESPONSE TO AN INCREASE IN THE TEMPERATURE OF THE SPACE BEING HEATED, AN ELECTROMAGNET HAVING A WINDING AND WHICH WHEN ENERGIZED APPLIES A FORCE ACTING TO MOVE SAID SWITCH TOWARD ITS OPEN POSITION AND SAID ELECTROMAGNET WINDING BEING OPERATIVE WHEN ENERGIZED TO SLIGHTLY HEAT SAID THERMOSTATIC ELEMENT, AN ENERGIZING CIRCUIT FOR SAID ELECTROMAGNET INCLUDING SAID SNAP-ACTING SWITCH, A TIME SWITCH IN SAID CIRCUIT OPERATIVE WHEN SAID SNAP-ACTING SWITCH IS CLOSED TO ALTERNATIVELY COMPLETE AND BREAK SAID ENERGIZING CIRCUIT AT A PREDETERMINED FREQUENCY AND FOR PREDETERMINED PERIODS, CIRCUIT CONNECTIONS FORMING A SHUNT ACROSS SAID TIME SWITCH, AND A TEMPERATURE AMBIENT TO THE SPACE SHUNT RESPONSIVE TO THE TEMPERATURE AMBIENT TO THE SPACE BEING ADAPTED AND OPERATIVE TO COMPLETE SAID SHUNT WHEN THE AMBIENT TEMPERATURE IS ABOVE A PREDETERMINED POINT AND TO BREAK SAID SHUNT WHEN THE AMBIENT TEMPERATURE FALLS BELOW SAID PREDETERMINED POINT, WHEREBY SADI ELECTROMGNET IS OPERATED CONSTANTLY DURING THE TIME SAID SNAP-ACTING SWITCH IS CLOSED AND THE AMBINET TEMPERATURE IS RELATIVELY HIGH AND IS OPERATED INTERMITTENTLY WHEN THE AMBIENT TEMPERATURE IS RELATIVELY LOW.