Automatic oven heat control by weight and type of roast

Claim 1

IN COMBINATION WITH A COOKING OVEN HAVING HEATING MEANS ADAPTED FOR ROASTING MEAT AND WEIGHING MEANS ADAPTED FOR WEIGHING MEAT, THERMOSTAT MEANS FOR CONTROLLING SAID HEATING MEANS AND OPERABLE FROM AN OFF POSITION TO SET A TEMPERATURE FOR SAID OVEN, ELECTRICAL BRIDGE MEANS HAVING A FIRST PORTION PRESELECTABLE FOR ESTABLISHING A TEMPERATURE FOR SAID OVEN SUITABLE FOR ROASTING A TYPE OF MEAT AND A SECOND PORTION INSERTABLE INTO A BODY SUCH AS A MEAT ROAST TO BE ROASTED IN SAID OVEN FOR SENSING AN INTERNAL TEMPERATURE OF THE BODY, MEANS FOR PRESELECTING SAID FIRST PORTION, REVERSIBLE DRIVE MEANS OPERABLE FORWARDLY IN RESPONSE TO AN UNBALANCE SIGNAL FROM SAID ELECTRICAL BRIDGE MEANS IN ONE DIRECTION FOR OPERATING SAID THERMOSTAT MEANS TO INCREASE THE OVEN TEMPERATURE SETTING ON SAID THERMOSTAT MEANS AND OPERABLE REVERSELY IN RESPONSE TO AND UNBALANCE SIGNAL FROM SAID ELECTRICAL BRIDGE MEANS IN THE OPPOSITE DIRECTION FOR OPERATING SAID THERMOSTAT MEANS TO DECREASE THE OVEN TEMPERATURE SETTING ON SAID THERMOSTAT MEANS, SAID ELECTRICAL BRIDGE MEANS INCLUDING A FEEDBACK MEANS OPERATED CONCURRENTLY WITH SAID REVERSIBLE DRIVE MEANS FOR REBALANCING SAID ELECTRICAL BRIDGE MEANS TO TERMINATE THE OPERATION OF SAID REVERSIBLE DRIVE MEANS, A D.C. POWER SOURCE ACTUABLE FOR ENERGIZING SAID ELECTRICAL BRIDGE MEANS, AND MEANS FOR COMPUTING THE TIME REQUIRED FOR ROASTING SAID BODY AND FOR ACTUATING SAID D.C. POWER SOURCE, SAID COMPUTING MEANS INCLUDING A PLURALITY OF PRESELECTABLE COOKING TIME CAMS ROTATABLY IN RESPONSE TO THE OPERATION OF SAID WEIGHING MEANS WHEN LOADED, EACH OF SAID COOKING TIME CAMS BEING CONFIGURED TO REFLECT A COOKING TIME BAND INDICATIVE OF A PARTICULAR TYPE OF MEAT AND DEGREE OF DONENESS, MEANS FOR SELECTING A SERVING TIME FOR SAID BODY, A PLURALITY OF PRESELECTABLE COOKING TIME LEVER MEANS ASSOCIATED RESPECTIVELY WITH EACH OF SAID COOKING TIME CAMS SAID MANUALLY ROTATABLE OUT OF ENGAGEMENT WITH THEIR RESPECTIVE COOKING TIME CAMS A PREDETERMINED DISTANCE IN RESPONSE TO THE SELECTION OF A SERVING TIME FOR SAID BODY, SAID PREDETERMINED DISTANCE BEING GREATER AS THE SERVING TIME IS MORE REMOTE FROM THE TIME OF SELECTION, MEANS FOR PRESELECTING ONE OF SAID COOKING TIME CAMS AND THEREBY ONE OF SAID COOKING TIME LEVER MEANS TO FORM A ROAST CYCLE START SWITCH, AN A.C. POWER SOURCE CONNECTIBLE THROUGH SAID START SWITCH TO ACTUATE SAID D.C. POWER SOURCE, TIMING MEANS OPERABLE FOR RETURNING THE SELECTED COOKING TIME LEVER MEANS TO THE SELECTED COOKING TIME CAM THEREBY TO CLOSE THE ROAST CYCLE START SWITCH AND ACTUATE SAID D.C. POWER SOURCE FOR INITIATING A ROASTING CYCLE, RESET MEANS ACTUATED BY THE COMBINED OPERATION OF SAID TIMING MEANS AT SAID SERVING TIME AND SAID WEIGHING MEANS WHEN UNLOADED FOR NEGATING THE PRESELECTION OF SAID COOKING TIME CAM AND THE PRESELECTION OF A TEMPERATURE FOR SAID OVEN, SAID RESET MEANS INCLUDING MEANS FOR ENERGIZATION SAID REVERSIBLE DRIVE MEANS FOR OPERATION IN SAID REVERSE DIRECTION TO OPERATE SAID THERMOSTAT MEANS TO SAID OFF POSITION, THEREBY TO TERMINATE SAID ROASTING CYCLE, AND SIGNAL MEANS ENERGIZABLE WHEN SAID SELECTED COOKING TIME LEVER MEANS IS IN ENGAGEMENT WITH SAID SELECTED COOKING TIME CAM BEFORE THE INITIATION OF SAID ROASTING CYCLE FOR INDICATION AN INSUFFIECIENT TIME FOR SAID ROASTING CYCLE WHEN THE SERVING TIME SELECTED DOES NOT ALLOW SUFFICIENT TIME TO COMPLETE THE ROASTING CYCLE.