Cutting mechanism for machines which wrap a prismatic box into a cellophane cover

Claim 1

IN A CUTTING MECHANISM FOR MACHINES WHICH WRAP A PRISMATIC BOX INTO A CELLOPHANE COVER, CUTTING OFF CELLOPHANE BLANKS AND RIPPING TAP PIECES TO BE CONNECTED OR FUSED TOGETHER WITH THE CELLOPHANE PIECES FORMING HE CELLOPHANE COVER, THE CELLOPHANE AND RIPPING TAPE PIECES BEING WOUND-OFF FROM A CELLOPHANE SUPPLY BOBBIN AND A TAPE SUPPLY BOBIN TO THE REQUIRED LENGTH AND SHAPE, THE SAID CUTTING MECHANISM COMPRISING: MEANS FOR PROVIDING A CONTINUOUS MOVEMENT F THE CELOPHANE BAND AND RIPPNG TAPE, MEANS TO PERIODICALLY SLOW DOWN THE CONTINUOUS MOVEMENT OF THE CELLOPHANE BAND AND RIPPING TAPE THROUGH THE CUTTING MECHANISM, AT THE MOMENT WHEN THE CUTTING-OFF SHOULD TAKE PLACE, A BAND PLACED AROUND A ROTARY HUB OF THE CELLOPHANE SUPPLY BOBBIN FORMING A BAND-BRAKE, A SPRING FOR TENSIONING THE SAID BAND, AN ADJSUTABLE SPRING HOLDER FOR CONTROLLING THE TENSIONING FORCE OF THE SAID SPRING, A STATIONARY PIN FOR MOUNTING SAID SPRING HOLDER IN THE MACHINE FRAME, AND A TWIN-ROLLER SWINGING OUT IN ONE DIRECTION UNDER THE EFFECT OF THE PULL OF THE WOUND-OFF CELLOPHANE AND A SPRNG MEANS PULLING SIAD TWIN-ROLLER IN THE OPPOSITE DIRECTION FOR MAINTAINING THE CELLOPHANE UNDER TENSION WHILE IT IS CONTINUOUSLY MVOED, SAID TWIN-ROLLER AND SPRING MEANS ACTING ON THE CELLOPHANE AND RESPONDING ONLY TO PERIODIC SLOW DOWN IN THE CONTINUOUS MOVEMENT THEREOF WITHOUT INFLUENCING THE MEANS FOR CONTINOUSLY MOVING AND FOR PERIODICALLY SLOWING DOWN THE MOVEMENT OF THE CELLOPHANE.