Control circuit for lubricating apparatus

Claim 1

A CONTROL FOR PERIODICALLY INITIATING OPERATION OF AN ELECTRICALLY ACTUATED APPARATUS AND STOPPING IT IN RESPONSE TO COMPLETION OF A CYCLE THEREOF COMPRISING AN INITIATING SWITCH, TIMER MEANS FOR PERIODICALLY ACTUATING SAID INITIATING SWITCH, A NORMALLY CLOSED SWITCH ADAPTED TO OPEN IN RESPONSE TO COMPLETION OF A CYCLE OF THE APPARATUS AND THEN TO CLOSE, A FIRST RELAY HAVING A SET OF NORMALLY CLOSED CONTACTS, A SECOND RELAY, AND INTERCONNECTIONS BETWEEN SAID RELAYS, SAID SWITCHES AND SAID APPARATUS PROVIDING AN OPERATING CIRCUIT FOR THE SECOND RELAY INCLUDING SAID INITIATING SWITCH AND SAID NORMALLY CLOSED CONTACTS OF SAID FIRST RELAY ADAPTED TO BE ENERGIZED VIA SAID NORMALLY CLOSED CONTACTS IN RESPONSE TO CLOSURE OF THE INITIATING SWITCH, A HOLDING CIRCUIT FOR THE SECOND RELAY INCLUDING SAID CYCLE-RESPONSIVE SWITCH ADAPTED TO BE ENERGIZED IN RESPONSE TO OPERATION OF THE SECOND RELAY AND DEENERGIZED IN RESPONSE TO OPENING OF THE CYCLE-RESPONSIVE SWITCH, A POWER CIRCUIT FOR SAID APPARATUS ADAPTED TO BE ENERGIZED IN RESPONSE TO OPERATION OF THE SECOND RELAY AND DEENERGIZED WHEN SAID SECOND RELAY IS DEENERGIZED, AN OPERATING CIRCUIT FOR THE FIRST RELAY ADAPTED TO BE ENERGIZED IN RESPONSE TO OPERATION OF THE SECOND RELAY, AND A HOLDING CIRCUIT FOR THE FIRST RELAY ADAPTED TO BE ENERGIZED IN RESPONSE TO CLOSURE OF THE INITIATING SWITCH AND OPERATION OF THE FIRST RELAY, WHEREBY SAID APPARATUS IS STARTED IN RESPONSE TO CLOSURE OF THE INITIATING SWITCH AND STOPPED IN RESPONSE TO OPENING OF THE CYCLE-RESPONSIVE SWITCH, AND PREVENTED FROM STARTING AGAIN DESPITE CLOSING OF THE CYCLERESPONSIVE SWITCH UNTIL THE INITIATING SWITCH OPENS TO DEENERGIZE THE FIRST RELAY AND AGAIN CLOSES.