Dust collecting apparatus

Claim 1

IN DUST COLLECTING APPARATUS COMPRISING A CASING, A DUST LADEN-GAS INLET IN SAID CASING, SUCTION BLOWER MEANS FOR PROVIDING A NEGATIVELY PRESSURIZED ATMOSPHERE IN SAID CASING, A DUCT COLLECTOR VESSEL DISPOSED IN A LOWER PORTION OF SAID CASING, A PLURALITY OF CONNECTING TUBES PROVIDING COMMUNICATIONS BETWEEN THE INTERIOR OF SAID CASING AND SAID DUST COLLECTOR VESSEL, A PLURALITY OF FABRIC, HOLLOW CYLINDRICAL FILTER MEMBERS LONGITUDINALLY DISPOSED IN SAID CASTING AND HAVING A CLOSED UPPER END AND A LOWER OPEN END CONNECTED TO EACH OF SAID PLURALITY OF CONNECTING TUBES, AND OSCILLATING MEANS SUPPORTING THE UPPER ENDS OF SAID PLURALITY OF FABRIC FILTER MEMBERS TO APPLY OSCILLATION TO SAID FABRIC FILTER MEMBERS, THE IMPROVEMENT WHICH COMPRISES A GAS INLET TUBE EXTENDING IN EACH OF SAID FABRIC FILTER MEMBERS TO HAVE AN OPEN UPPER END ADJACENT THE INTERMEDIATE REGION THEREOF IN THE LONGITUDINAL DIRECTION OF SAID FABRIC FILTER MEMBER AND AN OPEN LOWER END COMMUNICATING WITH SAID GAS INLET, SAID BLOWER MEANS CHARGES A DUST-LADEN GAS THROUGH SAID INLET AND THEN THROUGH THE UPPER OPEN END OF SAID GAS INLET TUBE INTO EACH OF SAID FABRIC FILTER MEMBERS, AND MEANS FOR DIVIDING SAID OSCILLATING MEANS WHILE A DUST-LADEN GAS IS BEING CHARGED INTO EACH OF SAID FABRIC FILTER MEMBERS.