Automatic web register controls

Claim 1

IN A MACHINE FOR FEEDING AT LEAST ONE CONTINUOUS WEB PROVIDED WITH REGISTER MARKS AT SPACED APART LOCATIONS THEREALONG FROM A SOURCE THEREOF IN A PREDETERMINED TIMED RELATIONSHIP AND IN REGISTER WITH RESPECT TO A FUNCTION PERFORMED AT A STATION OF THE MACHINE TO WHICH THE WEB IS TO BE FED CONTINUOUSLY, THE COMBINATION OF: GUIDING MEANS ENGAGEABLE WITH THE WEB AND DEFINING A FEEDING PATH FOR THE LATTER EXTENDING FROM THE SOURCE OF THE WEB TO SAID STATION VARIABLE SPEED DRIVE MEANS CONTROLLING THE SPEED OF MOVEMENT OF THE WEB ALONG SAID PATH WEB DISPLACING MEANS MOVEABLE TO VARY THE LENGTH OF THE PORTION OF SAID PATH BETWEEN SAID DRIVE MEANS AND SAID STATION AND THEREBY CAUSE DISPLACEMENT OF THE WEB ALONG SAID PATH MEANS FOR DETECTING SAID REGISTER MARKS AS THEY PASS THROUGH A PREDETERMINED POINT IN SAID PATH AT WHICH A PREDETERMINED POSITIONAL RELATIONSHIP OF SAID MARKS TO SAID POINT CORRESPONDS TO CORRECT REGISTER BETWEEN THE WEB AND STATION MEANS FOR GENERATING SIGNALS AT A UNIFORM FREQUENCY SYNCHRONIZED TO THE RATE OF PERFORMANCE OF SAID FUNCTION AND REGISTER CONTROL MEANS RESPONSIVE TO SIGNALS FROM SAID DETECTING MEANS AND TO THE SIGNALS FROM SAID GENERATING MEANS AND OPERATIVE UPON VARIATIONS OF THE RELATIONSHIP IN TIME OF THE RESPECTIVE SIGNALS, CORRESPONDING TO DEVIATIONS OF THE POSITIONS OF SAID MARKS RELATIVE TO SAID POINT FROM SAID PREDETERMINED POSITIONAL RELATIONSHIP, TO VARY THE SPEED OF SAID DRIVE MEANS AND SIMULTANEOUSLY MOVE SAID WEB DISPLACING MEANS IN THE SENSE FOR RESTORING SAID POSITIONAL RELATIONSHIP, WHEREBY TO CORRECT ANY SUBSTANTIAL ERRORS OF REGISTRATION.