Materials proportioning device

Claim 1

IN AN AUTOMATIC DOSING MACHINE, A SOURCE OF MATERIAL; WEIGHTING MEANS; VALVE MEANS FOR CONTROLLING THE FLOW OF MATERIAL FROM SAID MATERIAL SOURCE TO SAID WEIGHING MEANS; SAID WEIGHING MEANS COMPRISING: A MATERIAL RECEPTACLE; A MOVABLE MEMBER CONNECTED TO SAID MATERIAL RECEPTACLE SO AS TO MOVE IN ACCORDANCE WITH THE WEIGHT OF SAID MATERIAL IN SAID RECEPTACLE; SIGNAL-PRODUCING MEANS LOCATED ADJACENT SAID MOVABLE MEMBER, SAID SIGNAL-PRODUCING MEANS BEING ARRANGED TO BECOME ENERGIZED WHEN SAID MOVABLE MEMBER REACHES A PREDETERMINED POSITION; MEANS FOR MOVING SAID SIGNAL-PRODUCING MEANS FROM A FIRST TO A SECOND ATTITUDE IN RESPONSE TO ITS FIRST ENERGIZATION, SAID MOVEMENT OF SAID SIGNAL-PRODUCING MEANS BEING SUCH THAT SAID MOVABALE MEMBER AGAIN CAUSES ENERGIZATION OF SAID SIGNAL-PRODUCING MEANS WHEN THE LEAD WEIGHT OF SAID MATERIAL IS ADDED TO THE WEIGHT AT WHICH SAID FIRST ENERGIZATION TAKES PLACE; MEANS ACTUATED BY SAID SIGNAL-PRODUCING MEANS FOR CLOSING SAID VALVE MEANS IMMEDIATELY UPON OCCURRENCE OF SAID FIRST ENERGIZATION; AND MEANS OPERATED AT A TIME AT WHICH SAID SIGNAL PRODUCING MEANS SHOULD BE RE-ENERGIZED FOR CHECKING WHETHER OR NOT SAID SIGNAL-PRODUCING MEANS IS THEN ENERGIZED.