Control apparatus for bulk milk storage

Claim 1

IN ELECTRICAL CONTROL APPARATUS FOR CONTROLLING THE OPERATION OF MILKING APPARATUS HAVING VACUUM PUMP MEANS AND MILK STORAGE APPARATUS HAVING REFRIGERATOR MEANS, AGITATOR MEANS AND TEMPERATURE RESPONSIVE MEANS, THE IMPROVEMENT COMPRISING, IN COMBINATION, TIMER MEANS RESPONSIVE TO THE ENERGIZING OF THE VACUUM PUMP MEANS, SAID TIMER MEANS HAVING A NORMALLY OPEN CONTACT WHICH CLOSES UPON THE TIMER OUT OF SAID TIMER MEANS, RELAY SWITCH MEAN RESPONSIVE TO THE ENERGIZING AND DE-ENERGIZING OF SAID VACUUM PUMP MEANS, SAID RELAY SWITCH MEANS HAVING A CONTACT WHICH ACCORDINGLY IS CLOSED WHEN SAID VACUUM PUMP MEANS IS ENERGIZED AND OPENED WHEN SAID VACUUM PUMP IS DE-ENERGIZED, SAID AGITATOR MEANS BEIN ENERGIZED BY THE CLOSING OF SAID RELAY SWITCH AND TIMER CONTACTS, SAID TEMPERATURE RESPONSIVE MEANS BEING ALSO RESPONSIVE TO SAID TIMER MANS IN THAT THE ELECTRICAL CIRCUIT TO SAID TEMPERATURE RESPONSIVE MEANS IS ENERGIZED BY THE CLOSING OF THE TIMER CONTACT, SAID REFRIGERATORMEANS AND AGITATOR MEANS BEING RESPONSIVE TO SAID TEMPERATURE RESPONSIVE MEANS WHEREBY SAID REFRIGERATOR MEANS IS ENERGIZED AND DE-ENERGIZED ONLY THROUGH SAID TEMPERATURE RESPONSIVE MEANS AND SAID AGITATOR MEANS IS ENERGIZED WHEN SAID REFRIGERATOR MEANS IS ENERGIZED AND ALSO WHEN SAID VACUUM PUMP MEANS IS ENERGIZED AND SAID TIMER MEANS HAS TIMED OUT AND IS DE-ENERGIZED ONLY WHEN BOTH SAID VACUUM PUMP MEANS AND REFRIGERATOR MEANS ARE DE-ENERGIZED.