Spring loaded heat saving device

Claim 1

IN A HEAT SAVING UNIT FOR USE IN CONJUNCTION WITH AN ELECTRICALLY ACTUATED BURNER HAVING AN ELECTRICAL CONTROL CIRCUIT, A BURNER STACK, A DAMPER PIVOTALLY MOUNTED WITHIN SAID STACK FOR MOVEMENT BETWEEN OPEN AND CLOSE POSITIONS, A REVERSIBLE MOTOR HAVING EXCITATION AND CONTROL WINDINGS CONNECTED TO SAID DAMPER IN ROTATIONAL AND CONTROL RELATION AND HAVING SAID EXCITATION WINDING CONTINOUSLY ENERGIZED WHEN CONNECTED TO A SOURCE OF POWER, SAID MOTOR BEING CONSTRUCTED AND ARRANGED TO REVERSE ITSELF WHEN ITS CONTROL CIRCUIT IS CLOSED, A ROOM THERMOSTAT CONNECTED TO SAID MOTOR CONTROL WINDING TO UTILIZE THE SAME AS A CONTROL CIRCUIT TO BE OPENED AND CLOSED AT DIFFERENT ROOM TEMPERATURES, A SWITCH MECHANISM CONNECTED WITH SAID DAMPER AND MOVING BETWEEN OPEN AND CLOSE POSITIONS WITH THE MOVEMENT OF SAID DAMPER, SAID SWITCH MECHANISM ADAPTED TO BE CONNECTED IN THE ELECTRICAL CONTROL CIRCUIT OF SUCH A BURNER IN CIRCUIT CLOSING AND OPENING RELATION AND BEING CONSTRUCTED AND ARRANGED TO CLOSE THE CIRCUIT TO THE BURNER WHEN SAID DAMPER IS OPENED AND TO OPEN THE CIRCUIT TO THE BURNER WHEN SAID DAMPER MOVES AWAY FROM OPEN POSITION, AND RESILIENT MECHANISM CONNECTED WITH SAID DAMPER AND URGING THE SAME TOWARD OPEN POSITION WHEREBY SAID DAMPER WILL OPEN IN APPRECIABLY LESS TIME THAN IT WILL CLOSE TO THEREBY EFFECT A HEAT SAVING.