Overload detector for automatic equipment

Claim 1

A SYSTEM ADAPTED TO BE CONNECTED TO A POTENTIAL SOURCE FOR HALTING THE OPERATION OF AN ELECTRICALLY POWERED MACHINE, WHOSE OPERATION IS DEPENDENT UPON THE STATE OF AN ELEMENT CAPABLE OF BEING IN AN ELECTRICALLY ENERGIZED OR IN A DE-ENERGIZED STATE, IN RESPONSE TO AN OVERLOAD IN SAID MACHINE COMPRISING A ROTATABLE CAM, FIRST AND THIRD SWITCHES ASSOCIATED WITH SAID CAM, EACH OF SAID SWITCHES HAVING ONE OF THEIR TERMINALS GROUNDED AT SAID MACHINE, SAID SWITCHES BEING ADAPTED TO BE SEQUENTIALLY CLOSED IN EACH CYCLE OF REVOLUTION OF SAID CAM, A SECOND SWITCH ASSOCIATED WITH SAID MACHINE BEING CLOSED ONLY IN THE ABSENCE OF SAID OVERLOAD, FIRST, SECOND AND THIRD ELECTROMAGNETIC RELAYS HAVING ONE OF THEIR TERMINALS CONNECTED TO THE OTHER TERMINAL OF SAID FIRST, SECOND AND THIRD SWITCHES RESPECTIVELY, A FIRST PLURALITY OF GANGED CONTACTS ASSOCIATED WITH SAID FIRST RELAY, A SECOND PLURALITY OF GANGED CONTACTS ASSOCIATED WITH SAID SECOND RELAY, A THIRD PLURALITY OF GANGED CONTACTS ASSOCIATED WITH SAID THIRD RELAY, ONE OF THE CONTACTS OF EACH OF SAID FIRST AND THIRD PLURALITIES RESPECTIVELY BEING CONNECTED TOGETHER, FIRST, SECOND AND THIRD LAMPS, MEANS FOR APPLYING POTENTIALS FROM SAID SOURCE TO SAID RELAYS, THE CLOSING OF SAID FIRST SWITCH DURING THE ROTATION OF THE CAM CAUSING THE ENERGIZATION OF SAID FIRST RELAY TO SWITCH THE POSITIONS OF ITS CONTACTS TO ILLUMINATE SAID FIRST LAMP, TO LOCK SAID FIRST RELAY AND SAID FIRST LAMP IN CIRCUIT WITH SAID SOURCE AND TO CONNECT SAID ONE CONTACT OF SAID FIRST PLURALITY TO GROUND, THE CLOSING OF SAID SECOND SWITCH CAUSING THE ENERGIZATION OF SAID SECOND RELAY TO SWITCH THE POSITIONS OF ITS CONTACTS TO ILLUMINATE SAID SECOND LAMP AND TO CONCURRENTLY DISCONNECT SAID FIRST RELAY AND SAID FIRST LAMP FROM SAID SOURCE, THE CLOSING OF SAID THIRD SWITCH CAUSING THE ENERGIZATION OF SAID THIRD RELAY TO SWITCH ITS CONTACTS TO ILLUMINATE SAID THIRD LAMP, THE FAILURE TO CLOSE OF SAID SECOND SWITCH DUE TO SAID OVERLOAD PREVENTING THE ENERGIZATION OF SAID SECOND RELAY WHEREBY SAID SECOND LAMP IS NOT ILLUMINATED AND SAID FIRST RELAY AND FIRST LAMP REMAIN LOCKED IN CIRCUIT WITH SAID SOURCE, SAID GROUND POTENTIAL BEING APPLIED THROUGH SAID ONE CONTACT OF SAID FIRST AND THIRD PLURALITIES TO SAID MACHINE TO SWITCH THE STATE OF SAID ELEMENT AND THEREBY TO HALT THE OPERATION OF SAID MACHINE.

Claim 2

A SYSTEM ADAPTED TO BE CONNECTED TO A POTENTIAL SOURCE FOR HALTING THE OPERATION OF AN ELECTRICALLY POWERED MACHINE, WHOSE OPERATION IS DEPENDENT UPON THE STATE OF AN ELEMENT CAPABLE OF BEING IN AN ELECTRICALLY ENERGIZED OR IN A DE-ENERGIZED STATE, IN RESPONSE TO AN OVERLOAD IN SAID MACHINE COMPRISING A ROTATABLE CAM, FIRST AND THIRD SWITCHES ASSOCIATED WITH SAID CAM, EACH OF SAID SWITCHES HAVING ONE OF THEIR TERMINALS GROUNDED AT SAID MACHINE, SAID SWITCHES BEING ADAPTED TO BE SEQUENTIALLY CLOSED IN EACH CYCLE OF REVOLUTION OF SAID CAM, A SECOND SWITCH ASSOCIATED WITH SAID MACHINE BEING CLOSED ONLY IN THE ABSENCE OF SAID OVERLOAD, FIRST, SECOND AND THIRD ELECTROMAGNETIC RELAYS HAVING ONE OF THEIR TERMINALS CONNECTED TO THE OTHER TERMINAL OF SAID FIRST, SECOND AND THIRD SWITCHES RESPECTIVELY, A FIRST PLURALITY OF GANGED CONTACTS ASSOCIATED WITH SAID FIRST RELAY, A SECOND PLURALITY OF GANGED CONTACTS ASSOCIATED WITH SAID SECOND RELAY, A THIRD PLURALITY OF GANGED CONTACTS ASSOCIATED WITH SAID THIRD RELAY, ONE OF THE CONTACTS OF EACH OF SAID FIRST AND THIRD PLURALITIES RESPECTIVELY BEING CONNECTED TOGETHER, FIRST, SECOND AND THIRD LAMPS, MEANS FOR APPLYING POTENTIALS FROM SAID SOURCE TO SAID RELAYS, THE CLOSING OF SAID FIRST SWITCH DURING THE ROTATION OF THE CAM CAUSING THE ENERGIZATION OF SAID FIRST RELAY TO SWITCH THE POSITIONS OF ITS CONTACTS TO ILLUMINATE SAID FIRST LAMP, TO LOCK SAID FIRST RELAY AND SAID FIRST LAMP IN CIRCUIT WITH SAID SOURCE AND TO CONNECT SAID ONE CONTACT OF SAID FIRST PLURALITY TO GROUND, THE CLOSING OF SAID SECOND SWITCH CAUSING THE ENERGIZATION OF SAID SECOND RELAY TO SWITCH THE POSITIONS OF ITS CONTACTS TO ILLUMINATE SAID SECOND LAMP AND TO CONCURRENTLY DISCONNECT SAID FIRST RELAY AND SAID FIRST LAMP FROM SAID SOURCE, THE CLOSING OF SAID THIRD SWITCH CAUSING THE ENERGIZATION OF SAID THIRD RELAY TO SWITCH ITS CONTACTS TO ILLUMINATE SAID THIRD LAMP, THE FAILURE TO CLOSE OF SAID SECOND SWITCH DUE TO SAID OVERLOAD PREVENTING THE ENERGIZATION OF SAID SECOND RELAY WHEREBY SAID SECOND LAMP IS NOT ILLUMINATED AND SAID FIRST RELAY AND FIRST LAMP REMAIN LOCKED IN CIRCUIT WITH SAID SOURCE, SAID GROUND POTENTIAL BEING APPLIED THROUGH SAID ONE CONTACT OF SAID FIRST AND THIRD PLURALITIES TO SAID MACHINE TO SWITCH THE STATE OF SAID ELEMENT AND THEREBY TO HALT THE OPERATION OF SAID MACHINE.