Method of and apparatus for cutting and deburring tubes

Claim 1

THE METHOD OF FORMING A DEBURRED LENGTH OF TUBING FROM A CONTINUOUS THIN-WALLED TUBE WITH THE AID OF A FLOATING MANDREL IN SAID TUBE, SAID FLOATING MANDREL SLIDABLY FITTING WITHIN SAID TUBE SO AS TO PROVIDE SUPPORT THEREFOR, SAID METHOD COMPRISING INSERTING A SECOND MANDREL INTO SAID TUBE, SAID SECOND MANDREL SLIDABLY FITTING WITHIN SAID TUBE SO AS TO PROVIDE SUPPORT THEREFOR, AND THEREBY PUSHING SAID FLOATING MANDREL BACK INTO SAID TUBE, RETRACTING SAID SECOND MANDREL, WHEREBY A SHORT SECTION OF TUBING REMAINS BETWEEN SAID MANDRELS, CUTTING OUT SAID SECTION OF TUBING, WHEREBY A LENGTH OF TUBING REMAINS ON SAID SECOND MANDREL, ADVANCING SAID SECOND MANDREL WITH RESPECT TO SAID LENGTH OF TUBING TO THE POINT WHERE THE ADVANCING END OF SAID SECOND MANDREL EXTENDS BEYOND THE END OF SAID LENGTH OF TUBING AND ROTATING SAID MANDREL WITH RESPECT TO SAID TUBING.