Spray booth

Claim 1

APPARATUS FOR REMOVING PARTICLES FROM A GASEOUS ATMOSPHERE COMPRISING AN ENCLOSED PLENUM CHAMBER AND A WASH CHAMBER HAVING A THROUGH PASSAGEWAY OF REDUCED SECTION RELATIVE TO SAID PLENUM CHAMBER FOR COMMUNICATING SAID PLENUM CHAMBER WITH THE GASEOUS ATMOSPHERE, SAID PASSAGEWAY HAVING AN INLET IN COMMUNICATION WITH THE GASEOUS ATMOSPHERE AND AN OUTLET IN COMMUNICATION WITH SAID PLENUM CHAMBER, WASH MEANS OPERATIVELY CONNECTED WITH SAID CHAMBER FOR PROVIDING A SPRAY OF WASHING FLUID WITHIN SAID CHAMBER BETWEEN SAID INLET AND SAID OUTLET WITH SAID SPRAY SUBSTANTIALLY COVERING SAID PASSAGEWAY AND FLOWING TOWARDS SAID INLET, MEANS FOR DRAWING A PORTION OF THE GASEOUS ATMOSPHERE TO BE CLEANED INTO SAID INLET, THROUGH SAID PASSAGEWAY, THROUGH SAID OUTLET AND THROUGH SAID PLENUM CHAMBER AND ALSO FOR DRAWING A PORTION OF SAID SPRAY OUT SAID OUTLET, FLOW RESTRICTION MEANS LOCATED AT SAID OUTLET AND BEING SELECTABLY ADJUSTABLE FOR SELECTABLY RESTRICTING THE FLOW OF THE PORTION OF THE GASEOUS ATMOSPHERE AND SAID PORTION OF SAID SPRAY THROUGH SAID OUTLET AND FOR CAUSING TURBULENCE OF THE PORTION OF THE GASEOUS ATMOSPHERE AND SAID PORTION OF SAID SPRAY AS THEY ARE DRAWN THROUGH SAID OUTLET, SAID RESTRICTION MEANS COMPRISING A PLATE LOCATED PROXIMATE TO SAND OVERLAYING SAID OUTLET AND ADJUSTMENT MEANS FOR SUPPORTING SAID PLATE FOR SELECTABLE MOVEMENT TOWARDS AND AWAY FROM SAID OUTLET, AND DEFLECTOR MEANS COMPRISING A MAZE OF DEFLECTORS DISPOSED IN SAID PLENUM CHAMBER ABOVE SAID FLOW RESTRICTION MEANS FOR DEFLECTING THE PORTION OF THE GASEOUS ATMOSPHERE AND SAID PORTION OF SAID SPRAY DRAWN THROUGH SAID OUTLET.