Automatic controls for splicing rollstand

Claim 1

A WEB SPLICING ROLLSTAND FOR DELIVERING A WEB CONTINUOUSLY FROM ONE WEB SUPPLY ROLL AFTER ANOTHER, INCLUDING CONTROL MEANS FOR EFFECTING A SEQUENCE OF OPERATIONS IN THE COURSE OF WHICH MEANS OPERABLE TO SPLICE A WEB RUN BEING UNWOUND FROM A FIRST WEB ROLL TO THE PERIPHERY OF A NEW WEB ROLL ARE BROUGHT INTO WORKING POSITION RELATIVE TO SAID RUN AND SAID NEW ROLL AND THEN, WITH THE NEW ROLL ROTATING AT THE SPEED OF SAID RUN, ARE OPERATED TO FORM A SPLICE, WHEREIN SAID CONTROL MEANS INCLUDE MEANS FOR INITIATING SAID SEQUENCE OF OPERATIONS AT A MOMENT WHEN THE UNWINDING FIRST ROLL HAS SUBSTANTIALLY A PREDETERMINED LENGTH OF WEB REMAINING THEREON, MEANS ACTUATABLE AFTER SAID MOMENT TO OPERATE SAID SPLICING MEANS, AND MEANS OPERATED IN ACCORDANCE WITH THE SPEED OF TRAVEL OF THE WEB UNWINDING FROM SAID FIRST ROLL FOR ACTUATING THE LAST-RECITED MEANS AT AN INTERVAL AFTER SAID MOMENT VARYING IN INVERSE RELATION TO SAID SPEED, WHEREBY A DESIRED MINIMAL LENGTH OF WEB WILL REMAIN ON SAID FIRST ROLL WHEN THE SPLICE IS FORMED, IRRESPECTIVE OF THE WEB SPEED.