Continuous tube forming and galvanizing

Claim 1

IN A MACHINE FOR THE CONTINUOUS FORMING AND GALVANIZING OF TUBING INCLUDING MEANS FOR CONTINUOUSLY FEEDING THE ENDLESS STRIP OF STEEL TO THE MACHINE, MEANS FOR FORMING THE STRIP STEEL INTO ROUNDED SHAPE TO BRING THE LATERAL EDGES TOGETHER, WELDING MEANS FOR JOINING THE FREE EDGES OF THE STRIP STEEL IN A CONTINUOUS SEAM TO FORM COMPLETELY ENCLOSED ENDLESS LENGTHS OF TUBING, SCRAFING MEANS FOR REMOVING PORTIONS EXTENDING OUTWARDLY FORM THE PERIPHERY OF THE TUBING, WASING AND CLEANING MEANS FOR REMOVAL OF GREASE AND DIRT FROM THE OUTER SURFACES OF THE FORMED TUBING, MEANS FOR TREATING THE OUTER SURFACE OF THE FORMED TUBING TO REMOVE METAL OXIDES, MEANS FOR APPLYING MOLTEN ZINC ONTO THE SURFACE OF THE CLEANED TUBING AND MEANS FOR CUTTING THE ENDLESS TUBING INTO PREDETERMINED LENGTHS, THE IMPROVEMENT WHEREIN THE WELDING MEANS COMPRISING A WELDING MEMBER IN THE FORM OF A FLAT CIRCULAR DISC MEMBER HAVING ITS LOWER PERIPHERAL EDGE PORTION IN WELDING ENGAGEMENT WITH THE UPPER SIDE OF THE FORMED TUBING TO WELD THE EDGES TOGETHER TO SEAL THE TUBING, MEANS FOR ROTATING THE DISC MEMBER FOR DISPLACEMENT OF THE LOWER PERIPHERAL EDGE ADJACENT THE TUBING IN THE DIRECTION OF LINEAR MOVEMENT OF THE TUBING, AND MEANS FOR APPLYING A COOLANT LIQUID ONTO THE PORTION OF THE DISC MEMBER IMMEDIATELY AFTER IT LEAVES THE TUBING AND IN A PORTION OVERLYING THE WELDED PORTION OF THE TUBING, AND ROTATING THE ELECTRODE AT A RATE TO ENABLE THE COOLANT LIQUID TO DRAIN FROM THE ELECTRODE BEFORE RETURNING INTO CONTACT WITH THE TUBING.