Sprinkler control means and combination

Claim 1

A LIQUID CONTROL SYSTEM FOR EFFECTING INTERMITTENT DISCHARGE OF LIQUID FROM A CONDUIT CONNECTED WITH A SOURCE OF LIQUID UNDER PRESSURE, COMPRISING: (A) A CONDUIT FOR LIQUID, HAVING AN INLET AT ONE END FOR CONNECTION WITH SAID SOURCE AND A DISCHARGE OUTLET AT ITS OTHER END FOR DISCHARGE OF SAID LIQUID FROM SAID CONDUIT; (B) SAID CONDUIT INCLUDING AN UPWARDLY PROJECTING ENLARGED PORTION BETWEEN SAID INLET AND SAID OUTLET FOR AIR AND THROUGH THE LOWER PART OF WHICH SAID LIQUID IS ADAPTED TO FLOW FROM SAID INLET TO SAID OUTLET IN UNOBSTRUCTED DIRECT COMMUNICATION WITH THE AIR IN SAID ENLARGED PORTION THEREABOVE, WHEREBY SAID ENLARGED PORTION WILL PROVIDE AN AIR DOME FOR COMPRESSION OF AIR THEREIN WHEN SAID OUTLET IS CLOSED AND DURING FLOW OF LIQUID FROM SAID SOURCE INTO SAID ENLARGED PORTION; (C) AN ELASTIC DIAPHRAGM SUPPORTED UNDER TENSION WITHIN SAID CONDUIT AT A POINT BETWEEN SAID ENLARGED PORTION AND SAID OUTLET FOR MOVEMENT FROM A CLOSED POSITION CLOSING SAID CONDUIT AT SAID POINT TO FLOW OF LIQUID IN SAID CONDUIT THEREPAST TO SAID OUTLET TO AN OPEN POSITION UNDER THE FORCE OF AIR COMPRESSED WITHIN SAID ENLARGED PORTION DURING FLOW OF LIQUID FROM SAID SOURCE INTO SAID ENLARGED CHAMBER WHEN SAID FORCE EXCEEDS THE TENSION OF SAID DIAPHRAGM FOR HOLDING SAID DIAPHRAGM IN SAID CLOSED POSITION;