Pneumatic or hydraulic automatic control system

Claim 1

A FLUID PRESSURE CONTROL DEVICE COMPRISING A COVER PLATE, SAID COVER PLATE HAVING AN APERTURE FOR ATTACHMENT TO A SOURCE OF CONSTANT PRESSURE FLUID, SAID COVER PLATE HVAING A SECOND APERTURE PROVIDING A FLUID PRESSURE OUTLET, SAID COVER PLATE HAVING A THIRD APERTURE FOR ATTACHMENT TO A SORUCE OF CONTROL FLUID PRESSURE, AN INTERMEDIATE PLATE, A CENTRAL CHAMBER IN SAID INTERMEDIATE PLATE, A SLOT IN SAID INTERMEDIATE PLATE LEADING FROM SAID CHAMBER TO THE EDGE OF SAID INTERMEDIATE PLATE TO PROVIDE COMMUNICATION WITH THE ATMOSPHERE, A RECESS IN SAID INTERMEDIATE PLATE COMMUNICATING WITH SAID FIRST APERTURE, A NOZZLE PASSAGE COMMUNICATING WITH SAID RECESS AND SAID CHAMBER AND DISPOSED AT AN ANGLE TO SAID SLOT, A SECOND RECESS IN SAID INTERMEDIATE PLATE COMMUNICATING WITH ASID SECOND APERTURE, A SECOND NOZZLE PASSAGE IN ALIGNMENT WITH SID FIRST NOZZLE PASSAGE AND COMMUNICATING WITH SAID SECOND RECESS AND SAID CHAMBER, A THIRD RECESS IN SAID INTERMEDIATE PLATE ON THE OPPOSITE SIDE OF SAID CHAMBER FROM SAID SLOT AND COMMUNICATING WITH SAID THIRD APERTURE, A THIRD NOZZLE PASSAGE DISPOSED IN ALIGNMENT WITH SAID SLOT AND AT AN ANGLE TO SAID FIRST AND SECOND NOZZLE PASSAGES AND COMMUNIATING WITH SAID THIRD RECESS AND SAID CHAMBER, A SECOND COVER PLATE IN ENGAGEMENT WITH SAID INTERMEDIATE PLATE AND HAVING APERTURES IN ALIGNMENT WITH SAID FIRST, SECOND AND THIRD APERTURES, A SECOND INTERMEDIATE PLATE IN ENGAGEMENT WITH SAID SECOND COVER PLATE, A CENTRAL CHAMBER, SLOT, RECESSES AND NOZZLE PASSAGES IN SAID SECOND INTERMEDIATE PLATE DUPLICATING THOSE IN SAID FIRST INTERMEDIATE PLATE COMMUNICATING WITH THE IN SAID SECOND INTERMEDIATE PLATE COMMUNICATING WITH THE APERTURES IN SAID SECOND COVER PLATE, A THIRD COVER PLATE IN ENGAGEMENT WITH SAID SECOND INTERMEDATE PLATE, AND MEANS TO CLAMP ALL OF SAID PLATES IN STAKED FLUID-TIGHT RELATIONSHIP TO PROVIDE A MULTI-STAGE PAREALLEL CONTROL DEVICE, WHEREBY PRESSURE CONTROL FLUID FLOWING FROM SAID FIRST NOZZLE PASSAGES WILL DEFLECT FLUID FLOWING FROM SAID FIRST NOZZLE PASSAGES ACROSS SAID CHAMBERS INTO SAID SLOTS IN ACCORDANCE WITH THE PRESSURE OF SAID CONTROL FLUID TO CONTROL THE QUALITY OF FLUID FLOWING FROM SAID CHAMBERS INTO SAID SECOND NOZZLE PASSAGES AND THE PRESSURE OF FLUID FLOWING FROM SAID SECOND RECESS THROUGH SAID SECOND APERTURS.