Repeating pneumatic timer

Claim 1

APPARATUS FOR THE PRODUCTION OF A CONTINUAL SERIES OF FLUID OUTPUT SIGNALS OF SELECTABLE AMPLITUDE AND FREQUENCY COMPRISING, IN COMBINATION, A FIRST BODY SECTION HAVING A PORTION OF A DIAPHRAGM CHAMBER, A SPRING CHAMBER CONNECTING TO SAID PORTION OF SAID DIAPHRAGN CHAMBER AND VENT CONNECTING THE SPRING CHAMBER TO EXTERIOR THE APPARATUS; A SECOND BODY SECTION HAVING A MULTIPLICITY OF PASSAGES, ANOTHER PORTION OF SAID DIAPHRAGM CHAMBER, AND A DIAPHRAGM SEAT WHICH DIVIDES SAID LAST RECITED CHAMBER PORTION INTO TWO SPACES; A DIAPHRAGM ARRANGED BETWEEN SAID FIRST BODY PORTION AND SAID SECOND BODY PORTION FLEXIBLY MOVABLE BETWEEN A FIRST POSITION CONTACT WITH SAID DIAPHRAGM SEAT TO SEALABLY SEPARATE SAID TWO SPACES, AND A SECOND POSITION OUT OF CONTACE WITH SAID DIAPHRAGM SEAT; A REGULATABLE PRESSURE SUPPLY SOURCE OF FLUID MEDIUM; A BACK PRESSURE VALVE HAVING AN OUTLET TO EXTERIOR OF THE APPARATUS AND AN INLET; FIRST ADJUSTABLE FLOW RESTRICTOR MEANS BETWEEN A FIRST PASSAGE CONNECTING FROM SAID SUPPLY SOURCE AND A SECOND PASSAGE CONNECTING TO ONE OF SAID TWO SPACES IN THAT PORTION OF THE DIAPHRAGM CHAMBER IN SAID SECOND BODY SECTION; CAPACITY TANK MEANS CONNECTING TO THE FIRST RECITED ONE OF SAID TWO SPACES THROUGH A THIRD PASSAGE; SECOND ADJUSTABLE FLOW RESISTOR MEANS BETWEEN A FOURTH PASSAGE CONNECTING FROM THE OTHER OF SAID TWO CONCENTRICALLY DISPOSED SPACES AND A FIFTH PASSAGE CONNECTING TO SAID BACK PRESSURE VALVE INLET, SAID SECOND ADJUSTABLE FLOW RESTRICTOR MEANS HAVING A HIGHER FLOW RATE THAN THAT OF SAID FIRST ADJUSTABLE FLOW RESTRICTOR MEANS; A FLUID OUTPUT SIGNAL CONTROL VALVE HAVING AN OUTLET CONNECTED TO A REGULATABLE PRESSURE SUPPLY SOURCE OF A FLUID MEDIUM, OPERABLE TO PRODUCE A FLUID OUTPUT SIGNAL UPON RECEIVING A CONTROL SIGNAL WHEN SAID DIAPHRAGM IS IN SAID SECOND POSITION; AND MEANS CONNECTING FROM THE LOCATION OF SAID DIAPHRAGM TO SAID FLUID OUTPUT SIGNAL CONTROL VALVE TO TRANSMIT A CONTROL SIGNAL ACCORDING TO THE POSITION OF SAID DIAPHRAGM AS SAID DIAPHRAGM MOVES FROM SAID FIRST POSITION TO SAID SECOND POSITION.