Web registration and tensioning means

Claim 1

IN A LAMINATING MACHINE, THE COMBINATION COMPRISING: (A) FRAME MEANS; (B) ROLLER MEANS ON SAID FRAME MEANS FOR RECEIVING SHEET MATERIAL AND MOVING THE MATERIAL IN A GIVEN DIRECTION FOR PROCESSING THEREOF; (C) SAID ROLLER MEANS INCLUDING AT LEAST ONE TENSIONING ROLLER RECEIVING MATERIAL THEREABOUT; (D) FLUID OPERATED FRICTION BRAKE MEANS COUPLED TO SAID TENSIONING ROLLER TO PERMIT ROTATION THEREOF BY MATERIAL IN CONTACT THEREWITH ONLY WHEN THE ROTATIONAL FORCE AXERTED ON SAID TENSIONING ROLLER BY THE MATERIAL PASSING THEREABOUT EXCEEDS A PREDETERMINED VALUE; (E) CARRIAGE MEANS FOR SUPPORTING A ROLL OF SHEET MATERIAL THEREON TO BE FED IN SAID GIVEN GENERAL DIRECTION TO SAID ROLLER MEANS; (F) GUIDE MEANS SUPPORTING SAID CARRIAGE MEANS FOR RECIPROCAL MOVEMENT ALONG A PATH EXTENDING TRANSVERSE TO SAID GENERAL DIRECTION; (G) SENSING MEANS FOR SENSING THE POSITION OF MATERIAL ON SAID ROLLER MEANS AND PRODUCING AN ELECTRICAL OUTPUT SIGNAL WHEN MATERIAL IS IMPROPERLY POSITIOED ON SAID ROLLER MEANS; AND (H) CARRIAGE POSITIONING MEANS FOR MOVING SAID CARRIAGE MEANS ALONG SAID PATH OF MOVEMENT THERETO TO RESTORE MATERIAL TO THE PROPER POSITION AS SENSED BY SAID SENSING MEANS, SAID CARRIAGE POSITIONING MEANS INCLUDING ELECTRICALLY ACTUABLE CONTROL MEANS RESPONSIVE TO SAID ELECTRICAL OUTPUT SIGNAL FOR CONTROLLING THE MOVEMENT OF SAID CARRIGE.