Apparatus for pointing workpieces

Claim 1

A TOOL OF THE TYPE DESCRIBED FOR FORMING AND REDUCING AN END PORTION OF A WORKPIECE SUCH AS A TUBE AND THE LIKE, COMPRISING A FLUID CYLINDER CONNECTABLE WITH A SOURCE OF FLUID UNDER PRESSURE, A PISTON RECIPROCALLY DISPOSED WITHIN SAID CYLINDER AND OPERABLE IN ONE DIRECTION BY FLUID UNDER PRESSURE, HOUSING MEANS FIXED WITH RESPECT TO SAID CYLINDER AND EXTENDING AXIALLY FROM SAID CYLINDER IN ONE DIRECTION, SAID HOUSING MEANS HAVING AN OPENING THROUGH AN OUTER END THEREOF FOR ENABLING AN END PORTION OF A WORKPIECE TO BE AXIALLY INSERTED INTO THE HOUSING MEANS, A PLURALITY OF ANNULARLY SPACED DIE MEMBERS MOUNTED WITHIN SAID HOUSING MEANS FOR BODILY AND SUBSTANTIALLY PARALLEL MOVEMENT RADIALLY AND ALSO AXIALLY OF SAID HOUSING MEANS BETWEEN A RADIALLY COLLAPSED WORKPIECE ENGAGING AND FORMING CONDITION AND A RADIALLY EXPANDED CONDITION, AND MEANS CONNECTED WITH SAID PISTON AND ENGAGED WITH SAID DIE MEMBERS FOR BODILY MOVING SAID DIE MEMBERS IN SUBSTANTIALLY PARALLEL RELATIONSHIP TOWARD SAID RADIALLY COLLAPSED CONDITION DURING AXIAL OUTWARD MOVEMENT OF THE PISTON RELATIVE TO SAID HOUSING MEANS.