Automatic control system for producing a bat of uniform thickness in lint cleaners

Claim 1

IN A LINT CLEANER OF THE BAT TYPE HAVING A LINT FLUE THROUGH WHICH A STREAM OF AIR BORNE LINT IS CONVEYED FROM A GIN AND A ROTATABLY DRIVEN CONDENSER SECREEN ARRANGED IN SAID LINT FLUR TO PROGRESSIVELY EXPOSE AREAS OF THE SCREEN TO THE STREAM OF AIR BORNE LINT FOR ACCUMULATING A BAT OF LINT ON THE UPSTREAM SURFACE OF THE EXPOSED SCREEN AREAS AND DISCHARGING VEHICLE AIR THERETHROUGH, IN WHICH THE RATE OF FEED OF LINT TO THE ROTATABLY DRIVEN CONDENSER SCREEN MAY BE NON-UNIFORM AND WHEREIN A PRESSURE DIFFERENTIAL EXISTS ACROSS THE EXPOSED SCREEN AREAS DURING OPERATION OF THE LINT CLEANER PRODUCED BY THE BAT OF LINT FORMED THEREON WHICH PRESSURE DIFFERENTIAL VARIES WITH VARIATION IN THE THICKNESS OF THE BAT, A CONTROL SYSTEM FOR KEEPING UNIFORM THE THICKNESS OF THE BAT THROUGHOUT ITS LENGTH COMPRISING MEANS FOR SENSING THE PRESSURES IN THE ZONE OF THE LINT FLUE AT OPPOSITE SIDES OF SAID EXPOSED SCREEN AREAS ADJACENT THE UPSTREAM AND DOWNSTREAM SURFACES THEREOF, AND MEANS FOR EMPLOYING THE PRESSURE DIFFERENTIAL MEASURED BY THE SENSING MEANS FOR COMPENSATINGLY VARYING THE SPEED OF ROTATION OF THE CONDENSER SCREEN.