Automatic poultry watering valve

Claim 1

IN A POULTRY WATERING VALVE OF THE TYPE DESCRIBED, THE COMBINATION OF A VALVE BODY; MOVABLE VALVE MEANS OPERATIVELY ARRANGED IN SAID BODY; AN OPERATING LEVER SUPPORTED ON SAID BODY FOR PIVOTAL MOVEMENT FROM AN INITIAL POSITION, IN WHICH SAID MOVABLE VALVE MEANS IS CLOSED, THROUGH AN INTERMEDIATE POSITION, IN WHICH SAID MOVABLE VALVE MEANS IS OPENED BY SAID LEVER, TO ANOTHER POSTION, IN WHICH SAID LEVER MAINTAINS SAID MOVABLE VALVE MEANS CLOSED; A MOVABLE CONNECTOR OPERATIVELY DISPOSED ON SAID LEVER FOR CONTINUOUS INFINITESIMALLY FINE ADJUSTMENT LENGTHWISE OF SAID LEVER OVER A DEFINITE PORTION OF THE LENGTH OF SAID LEVER, THE PIVOTAL AXIS OF SAID LEVER BEING LOCATED BETWEEN SAID BODY AND SAID PORTION OF SAID LEVER ALONG WHICH SAID CONNECTOR IS ADJUSTABLE; A FIXED SUPPORT MOUNTED ON SAID BODY AND SPACED FROM SAID LEVER IN THE DIRECTION OF MOVEMENT OF SAID LEVER FROM SAID OTHER POSITIONS TO SAID INITIAL POSITION AND AT LEAST GENERALLY IN THE PLANE OF MOVEMENT OF SAID LEVER; AND A BIASING SPRING OF THE TENSION TYPE, ONE END OF SAID SPRING BEING ATTACHED TO SAID FIXED MEANS WITH SUBSTANTIAL FREEDOM FOR PIVOTAL MOVEMENT GENERALLY ABOUT ITS POINT OF ATTACHMENT TO SAID SUPPORT MEANS, THE OTHER END OF SAID SPRING BEING CONNECTED TO SAID MOVABLE CONNECTOR, AJDUSTMENT OF SAID MOVABLE CONNECTOR OVER SAID PORTION OF SAID LEVER CASING THE SAME TO MOVE IN A STRAIGHT LINE TANGENT TO A CIRCLE, DESCRIBED ABOUT THE POINT OF CONNECTION OF SAID ONE END OF SAID SPRING OF SAID SUPPORT WHEN SAID LEVER IS IN SAID INITIAL POSITION, SAID PORTION OF SAID LEVER ALONG WHICH SAID CONNECTOR IS ADJUSTABLE EXTENDING FOR A MATERIAL DISTANCE ON BOTH SIDES OF THE SAID POINT OF TANGENCY TO SAID LINE OF MOVEMENT OF SAID MOVABLE CONNECTOR, SAID SPRING BEING AT LEAST SUBSTANTIALLY RELAXED WHEN SAID MOVABLE CONNECTOR IS AT SAID POINT OF TANGENCY AND SAID LEVER IS IN SAID INITIAL POSITION, WITH THE VALVE CLOSED.