Level sensing means for electrically conductive materials

Claim 1

IN A DEVICE OF THE CHARACTER DESCRIBED, THE COMBINATION COMPRISING, A CONTAINER ADAPTED TO CONTAIN ELECTRICALLY CONDUCTIVE MATERIALS, FIRST CIRCUIT MEANS OPERATIVE WITH RELATIVELY LOW CURRENT FLOW, A PAIR OF SPACED ELECTRODES ASSOCIATED WITH SAID CONTAINER FOR CONTACT BY THE MATERIALS AT A PREDETERMINED LEVEL OF MATERIAL IN SAID CONTAINER, SECOND CIRCUIT MEANS OPERATIVE WITH RELATIVELY HIGH CURRENT FLOW, AND AN ELECTRICALLY ENERGIZED ELEMENT INCLUDED IN SAID FIRST CIRCUIT MEANS HAVING A FIRST ELECTRICAL CONDITION RESPONSIVE TO A PREDETERMINED VOLTAGE, SAID ELECTRODES ELECTRICALLY CONNECTED IN PARALLEL TO SAID ELECTRICALLY ENERGIZED ELEMENT FOR CREATING A SHORT CIRCUIT TO SAID ELECTRICALLY ENERGIZED ELEMENT WHEN A CIRCUIT IS COMPLETED BETWEEN SAID ELECTRODES, SAID ELECTRICALLY ENERGIZED ELEMENT RESPONSIVE TO THE STATE OF COMPLETION OF A CIRCUIT BETWEEN SAID ELECTRODES FOR ASSUMING A SECOND ELECTRICAL SIDES AND TOWARD THE FRONT TO FIT INTO SAID CUT-OUT PORTIONS AND BEING JOINED TO THE LATTER ALONG THE UPPER AND LOWER CURVED EDGES THEREOF.