Corrugated paper web guiding and tensioning apparatus

Claim 1

APPARATUS OF THE CHARACTER DESCRIBED FOR ASSISTING IN THREADING A CORRUGATED PAPER WEB FROM A CORRUGATOR TO A DOUBLE FACER, INCLUDING A BRIDGE LOCATED ABOVE THE LEVEL OF THE CORRUGATOR, MEANS FOR PROGRESSIVELY FEEDING ALONG SAID BRIDGE FROM ITS ENTRANCE END, A CORRUGATED PAPER WEB TRAVELING FROM THE CORRUGATOR, MEANS ACCESSIBLE ADJACENT THE DELIVERY END OF SAID BRIDGE FOR FEEDING CORRUGATED PAPER THEREFROM TO THE DOUBLE FACER, TENSIONING MECHANISM DISPOSED AT THE DELIVERY END OF SAID BRIDGE, SAID LAST MENTIONED MECHANISM HAVING WEB SUPPORTING MEMBER AROUND WHICH THE WEB PARTIALLY PASSES IN NORMAL OPERATION TO TENSION THE WEB, AND MEANS FOR RAISING AND LOWERING SAID WEB SUPPORTING MEMBER BETWEEN A LOWER POSITION NEAR THE LEVEL OF SAID BRIDGE, IN WHICH LOWER POSITION THE FORWARD END PORTION OF A CORRUGATED WEB TO BE THREADED THROUGH THE APPARATUS TO THE DOUBLE FACER CAN PASS FREELY ALONG THE BRIDGE, OVER AND BEYOND SAID WEB SUPPORTING MEMBER, AND AN UPPER POSITION SUBSTANTIALLY ABOVE THE LEVEL OF THE BRIDGE, IN WHICH UPPER POSITION THE WEB IS TENSIONED AS IT MOVES OVER SAID WEB SUPPORTING MEMBER.