Quick-change expendable brush for dulling machines

Claim 1

IN A DULLING MACHINE, THE COMBINATION OF: A HOUSING HAVING LATERALLY SPACED APART SIDE WALLS; AND A DEMOUNTABLE BRUSH ASSEMBLY INCLUDING A HEADSTOCK SUBASSEMBLY MOUNTED ON ONE SIDE WALL OF THE HOUSING AND PROVIDED WITH A FIRST BEARING, A FIRST ARBOR JOURNALED IN SAID FIRST BEARING IN NON-AXIALLY MOVABLE RELATION THERETO, AND DRIVING MEANS FOR SAID FIRST ARBOR; A TAILSTOCK SUBASSEMBLY INCLUDING A SECOND BEARING MOUNTED ON THE OPPOSITE WALL OF THE HOUSING IN AXIAL ALIGNMENT WITH SAID FIRST BEARING, AND A SECOND ARBOR JOURNALED IN SAID SECOND BEARING IN AXIAL ALIGNMENT WITH SAID FIRST ARBOR; THE INNER ENDS OF SAID FIRST AND SECOND ARBORS BEING RELATIVELY SPACED AXIALLY; AN EXPENDABLE DULLING BRUSH, REMOVABLE FROM SAID DULLING MACHINE IN A DIRECTION NORMAL TO THE AXIS OF SAID BEARINGS, SAID BRUSH INCLUDING A TUBULAR CORE; SAID SECOND ARBOR BEING AXIALLY SLIDABLE IN SAID SECOND BEARING; RADIALLY ENLARGED HEADS PROVIDED ON THE INNER ENDS OF THE RESPECTIVE FIRST AND SECOND ARBORS AND HAVING AXIALLY INWARDLY FACING OPPOSED SEATS FOR COUPLING ENGAGEMENT WITH THE CORRESPONDING ENDS OF THE BRUSH CORE; AND RELEASABLE MEANS TO DRAW SAID SECOND ARBOR INWARDLY THROUGH THE SECOND BEARING TOWARD SAID FIRST ARBOR TO CLAMP THE DULLING BRUSH IN OPERATIVE ASSEMBLED POSITION THEREBETWEEN, THE RETRACTION OF SAID RELEASEABLE MEANS EFFECTING DISCONNECTION THEREOF FROM COUPLED RELATION TO SAID FIRST ARBOR, WHEREBY TO PERMIT RELEASED RETRACTION OF SAID SECOND ARBOR FROM NORMALLY ENGAGED RELATION WITH THE CORE OF THE DULLING BRUSH, AND THUS TO DISENGAGE THE LATTER SUBJECT TO REMOVAL FROM COUPLED RELATION TO AND BETWEEN THE FIRST AND SECOND ARBORS, WITHOUT NECESSITY FOR DISMOUNTING THE SAID BEARING MEMBERS FROM THE HOUSING.