Tube cutting machine

Claim 1

AN APPARATUS FOR CUTTING TUBES OR THE LIKE, COMPRISING A SUPPORTING FRAMEWORK, A PAIR OF PARALLEL SPACED ROLLS MOUNTED ON SAID FRAMEWORK, A ROLL SUPPORTING MEMBER PIVOTALLY MOUNTED ON SAID FRAMEWORK FOR MOVEMENT ABOUT AN AXIS PARALLEL TO THE AXES OF SAID PAIR OF ROLLS A TOP ROLL ROTATABLY MOUNTED ON SAID SUPPORTING MEMBER PARALLEL TO AND SPACED ABOVE SAID PAIR OF ROLLS AND MOVABLE WITH RESPECT THERETO TO CLAMP A TUBE OR THE LIKE THEREBETWEEN, MEANS FOR DRIVING ONE OF SAID PAIR OF ROLLS TO ROTATE SAID TUBE, A TUBE RAISING ELEMENT MOUNTED ON SAID SUPPORTING FRAMEWORK FOR MOVEMENT UPWARDLY BETWEEN SAID PAIR OF ROLLS TO LIFT THE TUBE ABOVE THE ROLLS AND HAVING MEANS TO FACILITATE AXIAL ADVANCEMENT OF THE TUBE, MEANS FOR RAISING SAID ELEMENT TO LIFT THE TUBE WHEN THE TOP ROLL IS RAISED OUT OF CLAMPING ENGAGEMENT WITH THE TUBE, ONE OF SAID ROLLS BEING INTERRUPTED INTERMEDIATE ITS ENDS TO DEFINE A CLEARANCE SPACE, A SAW SUPPORTING ARM PIVOTALLY MOUNTED ON SAID FRAMEWORK AND HAVING A FREE END ADJACENT TO AND ALIGNED WITH THE INTERRUPTION IN THE ROLL AND BEING PIVOTABLE IN A PLANE PERPENDICULAR TO THE AXES OF SAID ROLLS, A CIRCULAR SAW BLADE ROTATABLY MOUNTED ON THE FREE END OF SAID SAW SUPPORTING ARM, MEANS FOR ROTATING SAID SAW BLADE, AND MEANS FOR ADVANCING SAID SAW SUPPORTING ARM TO ADVANCE SAID SAW BLADE THROUGH SAID CLEARANCE SPACE INTO CUTTING ENGAGEMENT WITH THE WALL OF SAID ROTATING TUBE A DISTANCE AT LEAST AS GREAT AS THE WALL THICKNESS OF THE TUBE, THEREBY CUTTING THE TUBE AS IT IS ROTATED PAST THE SAW BLADE.

Claim 2

AN APPARATUS FOR CUTTING TUBES OR THE LIKE, COMPRISING A SUPPORTING FRAMEWORK, A PAIR OF PARALLEL SPACED ROLLS MOUNTED ON SAID FRAMEWORK, A ROLL SUPPORTING MEMBER PIVOTALLY MOUNTED ON SAID FRAMEWORK FOR MOVEMENT ABOUT AN AXIS PARALLEL TO THE AXES OF SAID PAIR OF ROLLS A TOP ROLL ROTATABLY MOUNTED ON SAID SUPPORTING MEMBER PARALLEL TO AND SPACED ABOVE SAID PAIR OF ROLLS AND MOVABLE WITH RESPECT THERETO TO CLAMP A TUBE OR THE LIKE THEREBETWEEN, MEANS FOR DRIVING ONE OF SAID PAIR OF ROLLS TO ROTATE SAID TUBE, A TUBE RAISING ELEMENT MOUNTED ON SAID SUPPORTING FRAMEWORK FOR MOVEMENT UPWARDLY BETWEEN SAID PAIR OF ROLLS TO LIFT THE TUBE ABOVE THE ROLLS AND HAVING MEANS TO FACILITATE AXIAL ADVANCEMENT OF THE TUBE, MEANS FOR RAISING SAID ELEMENT TO LIFT THE TUBE WHEN THE TOP ROLL IS RAISED OUT OF CLAMPING ENGAGEMENT WITH THE TUBE, ONE OF SAID ROLLS BEING INTERRUPTED INTERMEDIATE ITS ENDS TO DEFINE A CLEARANCE SPACE, A SAW SUPPORTING ARM PIVOTALLY MOUNTED ON SAID FRAMEWORK AND HAVING A FREE END ADJACENT TO AND ALIGNED WITH THE INTERRUPTION IN THE ROLL AND BEING PIVOTABLE IN A PLANE PERPENDICULAR TO THE AXES OF SAID ROLLS, A CIRCULAR SAW BLADE ROTATABLY MOUNTED ON THE FREE END OF SAID SAW SUPPORTING ARM, MEANS FOR ROTATING SAID SAW BLADE, AND MEANS FOR ADVANCING SAID SAW SUPPORTING ARM TO ADVANCE SAID SAW BLADE THROUGH SAID CLEARANCE SPACE INTO CUTTING ENGAGEMENT WITH THE WALL OF SAID ROTATING TUBE A DISTANCE AT LEAST AS GREAT AS THE WALL THICKNESS OF THE TUBE, THEREBY CUTTING THE TUBE AS IT IS ROTATED PAST THE SAW BLADE.