Motor powered radial arm tool support

Claim 1

IN A RADIAL SAW IN COMBINATION: A HORIZONTAL FLAT RECTANGULAR TABLE STRUCTURE; A COLUMN ASSEMBLY AT A REAR EDGE OF SAID TABLE, SAID COLUMN ASSEMBLY INCLUDING A FIXED AXIALLY VERTICAL HOLLOW CYLINDRICAL BASE, A COLUMN AXIALLY MOVABLE IN SAID BASE, SAID COLUMN HAVING AN EXTERNAL THREAD, AN INTERNALLY THREADED NUT ROTATABLY ENGAGED WITH THE EXTERNAL THREAD OF SAID COLUMN, MEANS HOLDING SAID NUT ROTATABLY ON THE UPPER END OF SAID COLUMN BASE SO THAT ROTATION OF SAID NUT ADVANCES AND RETRACTS SAID COLUMN AXIALLY IN SAID COLUMN BASE; AN ARM SECURED AT ONE END TO SAID COLUMN AND EXTENDING FORWARDLY HORIZONTALLY OVER THE CENTER OF SAID TABLE, A TURRET ASSEMBY SUPPORTED AT THE FORWARD OTHER END OF SAID ARM AND ROTATABLE ON A VERTICAL AXIS PASSING THROUGH THE CENTER OF THE TABLE, A TRACK CLAMP SECURED TO SAID TURRET AND ROTATABLE THEREWITH, A TRACK HORIZONTALLY SLIDABLE IN SAID CLAMP, AND A SAW BLADE CARRIAGE SUPPORTED BY SAID TRACK SO THAT THE CARRIAGE IS MOVABLE HORIZONTALLY ON A LINE IN A VERTICAL PLANE INCLUDING THE VERTICAL AXIS OF SAID COLUMN, THE AXIS OF ROTATION OF SAID TURRET ASSEMBLY AND THE CENTER OF SAID TABLE, A FIRST ARCUATE RAIL SUPPORTED BY SAID CARRIAGE, A SECOND ARCUATE RAIL SUPPORTED WITHIN SAID FIRST RAIL AND MOVABLE CIRCUMFERENTIALLY WITH RESPECT TO THE FIRST RAIL, A THIRD RAIL SUPPORTED WITHIN SAID SECOND RAIL AND MOVABLE ALONG THE SECOND RAIL, AND MOTOR MEANS CARRIED BY THE THIRD RAIL FOR ROTATABLY SUPPORTING A SAW BLADE WITH A BOTTOM EDGE ADJACENT THE TABLE; SAID FIRST, SECOND AND THIRD RAILS EACH HAVING A CENTER OF CURVATURE AT A COMMON POINT AT THE BOTTOM EDGE OF THE SAW BLADE, SAID MOTOR MEANS SUPPORTING THE SAW BLADE SO THAT SAID POINT LIES IN SAID VERTICAL PLANE INCLUDING THE AXIS OF ROTATION OF SAID TURRET ASSEMBLY, THE VERTICAL AXIS OF SAID COLUMN AND THE CENTER OF SAID TABLE.