Mechanical dust collector

Claim 1

A CENTRIFUGAL DUST COLLECTOR COMPRISING A HOUSING HAVING A GAS INLET AND A GAS OUTLET, A TRANSVERSE WALL MEMBER IN SAID HOUSING DIVIDING THE HOUSING INTO AN UPSTREAM AND DOWNSTREAM CHAMBER, MEANS COOPERATING WITH SAID WALL MEMBER TO DEFINE DUST CHANNELS COMMUNICATING WITH A DUST RECEIVER BELOW SAID HOUSING, A PLURALITY OF GENERALLY VERTICALLY EXTENDING CENTRIFUGAL SEPARATOR DEVICES, EACH INCLUDING A SEPARATOR TUBE HAVING AN INLET, A GAS OUTLET TUBE CONCENTRICALLY MOUNTED TO EXTEND FROM THE UPPER END OF SAID SEPARATOR TUBE AND MEANS FOR IMPARTING VORTICAL MOTION TO GAS ENTERING THE SEPARATOR TUBE, SAID SEPARATOR DEVICES BEING POSITIONED IN SAID UPSTREAM CHAMBER WITH THE LOWER ENDS OF THE SEPARATOR TUBES PROJECTING INTO SAID DUST CHANNELS, SAID DUST CHANNELS DISPOSED ON THE DOWNSTREAM SIDE OF THE INLETS OF SAID SEPARATORS, AND DUCT MEANS CONNECTING THE OUTLET ENDS OF THE OUTLET TUBES TO THE DOWNSTREAM CHAMBER THROUGH SAID WALL MEMBER.