Welding of railroad rails

Claim 1

METHOD FOR WELDING RAILROAD RAILS INCLUDING BASE, WEB AND HEAD SECTIONS WHICH COMPRISES POSITIONING THE RAILS TO BE WELDED WITH THEIR FACES IN PARALLEL SPACED RELATION, SUPPORTING SAID RAILS ON A BASE MEMBER HAVING AN OPENING THEREIN TO PROVIDE A STARTING RESERVOIR FOR THE WELD TO BE MADE, CENTERING SAID RAILS ON SAID RESERVOIR, POSITIONING A CURRENT-CARRYING MEMBER IN THE SPACE BETWEEN SAID RAIL FACES, PLACING WELD SHAPING MEMBERS CONTOURED TO FIT THE RAIL SECTIONS ON SUCH SECTIONS TO FORM A CAVITY ENCLOSING SAID CURRENT-CARRYING MEMBER AND TO DEFINE THE SHAPE OF SAID WELD TO BE MADE, PASSINMG A CONSUMABLE WIRE THROUGH ONE END OF SAID CURRENT-CARRYING MEMBER UNTIL IT EMERGES FROM THE OTHER END THEREOF, PLACING A MEASURED AMOUNT OF A FIRST WELDING COMPOSITION IN SAID STARTING RESERVOIR TO COVER THE END OF SAID WIRE, INITIALLY STRIKING AN ARC IN SAID STARTING RESERVOIR, MAINTAINING THE ARC CURRENT AT A PRESELECTED STARTING VALUE UNTIL A QUIESCENT CONDITION IS ADHEIVED IN SUCH RESERVOIR, INCREASING SAID CURRENT TO A PRESELECTED WELDING VALUE, PROGRESSIVELY CONSUMING SAID WIRE, ADDING A SECOND DIFFERENT WELDING COMPOSITION DURING THE PROGRESSION OF SAID WELD TO MAINTAIN SAID QUIESCENT CONDITION, COMMENC-