Liquid level control system

Claim 1

A LIQUID LEVEL CONTROL DEVICE COMPRISING: (A) A CONTAINER FOR MAINTAINING EVEN A TURBULENT LIQUID BETWEEN TWO PREDETERMINED LEVELS, SAID CONTAINER INCLUDING A BOTTOM WITH SIDES EXTENDING UPWARDLY THEREFROM AND PROVIDED WITH AN OPENING THROUGH ONE OF SAID SIDES BELOW THE LOWER LEVEL OF SAID TWO LEVELS, SAID OPENING HAVING A SIZE TO ALLOW RESTRICTED FLOW OF LIQUID THERETHROUGH, (B) A RESERVOIR FOR LIQUID, (C) AN L-SHAPED TUBE INCLUDING A MINOR HORIZONTALLY DISPOSED PORTION IN COMMUNICATION WITH SAID OPENING AND A MAJOR VERTICAL PORTION WHEREBY LIQUID FROM SAID CONTAINER WILL MAINTAIN A BODY OF LIQUID IN SAID MAJOR TUBE PORTION WITH A SURFACE CO-PLANAR WITH THE MEAN SURFACE OF LIQUID IN SAID CONTAINER, (D) A BRACKET ADJUSTABLY MOUNTED IN SAID MAJOR VERTICAL PORTION, A FIXED INSULATOR FIXED TO SAID BRACKET, (E) AN UPPER AND A LOWER CONTACT VERTICALLY SPACED RELATIVELY TO EACH OTHER AND CARRIED BY SAID INSULATOR, (F) A FLOAT ON THE LIQUID IN SAID MAJOR TUBE PORTION, SAID FLOAT HAVING A STEM SLIDABLY MOUNTED IN SAID BRACKET, (G) A MOVABLE CONTACT MOUNTED ON SAID STEM, SAID FLOAT CONTROLLING THE POSITION OF SAID MOVABLE CONTACT WITH RESPECT TO SAID UPPER AND LOWER CONTACTS, (H) AN ELECTRIC PUMP HAVING AN INLET COMMUNICATING WITH SAID RESERVOIR, AND AN OUTLET COMMUNICATING WITH SAID CONTAINER, (I) A FIRST ELECTRICAL CIRCUIT FOR ENERGIZING SAID PUMP, INCLUDING A MANUAL SWITCH AND A SECOND BIASED-OPEN SWITCH, SAID LOWER CONTACT ON SAID INSULATOR FOR ENGAGING SAID CONTACT ON SAID STEM, A FIRST SOLENOID FOR ENERGIZING SAID SECOND SWITCH TO CLOSED POSITION AND A LATCH MEANS FOR HOLDING SAID SECOND SWITCH CLOSED ON SUBSEQUENT DE-ENERGIZATION OF SAID SOLENOID, AND (J) A SECOND ELECTRICAL CIRCUIT FOR RELEASING SAID LATCH, INCLUDING SAID UPPER CONTACT ON SAID INSULATOR FOR ENGAGING SAID CONTACT ON SAID STEM AND A SECOND SOLENOID TO BE ENERGIZED FOR RELEASING SAID LATCH.