Rollstand equipment for unwinding and rewinding web material

Claim 1

ROLLSTAND EQUIPMENT OF THE KIND EMPLOYED IN THE UNWINDING OF REELS OF MATERIAL IN WEB FORM, SAID EQUIPMENT COMPRISING A ROLLSTAND HAVING AN AXIS, A PLURALITY OF REEL SUPPORTING ARMS FORMING A UNIT AND BEING MOUNTED ON SAID ROLLSTAND FOR ROTATION ABOUT THE ROLLSTAND AXIS, MEANS ON EACH ARM FOR SUPPORTING A REEL FOR ROTATION ABOUT AN AXIS SUBSTANTIALLY PARALLEL TO SAID ROLLSTAND AXIS, AN ELECTRIC MOTOR FOR ROTATING A NEW REEL OF WEB MATERIAL ON ONE ARM OF THE EQUIPMENT, MEANS FOR PRODUCING AN ELECTRICAL QUANTITY PROPORTIONAL TO THE ANGULAR VELOCITY OF THE NEW REEL, MEANS FOR ROTATING SAID UNIT FROM A REFERENCE POSITION TO A WEB-SPLICING POSITION, MEANS FOR DERIVING FROM SAID QUANTITY AND FROM THE ARC OF TRAVEL OF THE NEW REEL IN MOVING FROM SAID REFERENCE POSITION TO SAID SPLICING POSITION A FIRST ELECTRICAL REFERENCE QUANTITY PROPORTIONAL TO THE PERIPHERAL VELOCITY OF THE NEW REEL, MEANS FOR PRODUCING A SECOND ELECTRICAL REFERENCE QUANTITY PROPORTIONAL TO THE LINEAR VELOCITY OF WEB MATERIAL BEING UNWOUND FROM AN EXPIRING REEL ON ANOTHER ARM OF THE EQUIPMENT, AND MEANS RESPONSIVE TO THE TWO REFERENCE QUANTITIES FOR CONTROLLING THE SPEED OF SAID ELECTRIC MOTOR IN ORDER TO ADJUST THE PERIPHERAL VELOCITY OF SAID NEW REEL TO BE SUBSTANTIALLY THE SAME AS THE LINEAR VELOCITY OF THE WEB MATERIAL BEING UNWOUND FROM SAID EXPIRING REEL.