Cutting means for dispenser of sheet material

Claim 1

A DISPENSER FOR HANDLING WRAP IN ROLL FORM, SAID WRAP BEING OF ALUMINUM FOIL OR OTHER THIN MATERIAL, SAID DISPENSER INCLUDING AN ELONGATED SHELF UPON WHICH WRAP FROM A ROLL IS SUPPORTED DURING DISPENSING, MEANS FOR SUPPORTING SAID SHELF IN PREDETERMINED RELATION TO SAID ROLL OF WRAP MATERIAL, SAID SHELF BEING LONG ENOUGH TO ACCOMMODATE THE FULL WIDTH OF THE WRAP, SAID SHELF HAVING ONE SEVERING BLADE-ACCOMMODATING TROUGH LONGITUDINALLY THEREOF, A YOKE ASSEMBLY INCLUDING A YOKE BODY AND AN ARM AT EACH END OF SAID BODY EXTENDING LATERALLY OF SAID BODY, MEANS FOR SUPPORTING SAID ARMS FOR SWINGING ABOUT A PIVOT AXIS PARALLEL TO, BUT LATERALLY OFFSET FROM, THE SHELF SUPPORT TROUGH, SAID YOKE BODY IN NORMAL DISPENSING POSITION BEING DISPOSED IMMEDIATELY ABOVE SAID SHELF AND HAVING A PAIR OF SPACED, PARALLEL, LATERALLY OFFFSET RAILS PROVIDING A CLEARANCE REGION BETWEEN SAID RAILS, SAID CLEARANCE REGION IN DISPENSING POSITION OF THE YOKE BEING DISPOSED ABOVE AND REGISTERING WITH SAID SHELF TROUGH, A GUIDE RAIL SUPPORTED AT ITS ENDS ONLY AT THE END PORTIONS OF SAID YOKE BODY, SAID GUIDE RAIL EXTENDING IN PARALLEL RELATION TO SAID SHELF TROUGH AND ABOVE SAID LATERALLY OFFSET RAILS IN THE NORMAL DISPENSING POSITION OF SAID YOKE, A MANUALLY MOVABLE SLIDER RESTING ON SAID GUIDE RAIL, SAID SLIDER AND GUIDE RAIL BEING COMPLEMENTARILY SHAPED SO THAT SAID SLIDER IS CAPABLE OF MOVING ONLY ALONG THE LENGTH OF SAID GUIDE RAIL, A SEVERING BLADE CARRIED BY SAID SLIDER IN DEPENDING RELATION AND, IN DISPENSING POSITION, EXTENDING THROUGH THE RAIL CLEARANCE REGION INTO THE SHELD TROUGH SAID BLADE HAVING TWO CUTTING EDGES AT RIGHT ANGLES TO EACH OTHER MEETING IN A TIP, THE TWO CUTTING EDGES LYING IN A FLAT PLANE WHICH IS PARALLEL TO AND LIES WITHIN THE CLEARANCE REGION AND SHELF TROUGH SO THAT EACH CUTTING EDGE OF SAID SEVERING BLADE BECOMES THE LEADING CUTTING EDGE AT SUBSTANTIALLY 45* TO THE WRAP MATERIAL LYING ABOVE SAID TROUGH AND BELOW CLEARANCE REGION IRRESPECTIVE OF THE DIRECTION OF SLIDER TRAVEL ALONG SAID GUIDE RAIL, SAID CLEARANCE REGION AND SHELF TROUGH BEING WIDE ENOUGH TO PERMIT THE ENTRY OF SAID SERVERING BLADE WHEN SAID YOKE IS MOVED ON ITS PIVOT AXIS DOWN TO SAID SHELF, SAID MEANS AT EACH END OF SAID YOKE BODY FOR SUPPORTING SAID GUIDE RAIL INCLUDING A LEAF HAVING A CLAW AT THE END THEREOF, SAID LEAF AND CLAW NORMALLY COOPERATING WITH THE END OF SAID GUIDE RAIL FOR LOCKING THE SAME INTO POSITION BY BEING SPRINGABLE TO CLEAR SAID GUIDE RAIL END WHEREBY SAID GUIDE RAIL MAY BE READILY SPRUNG INTO POSITION, SAID YOKE ARMS HAVING SUFFICIENT SPRING TO ASSEMBLE SAID YOKE ON SAID SHELF SUPPORT STRUCTURE WHEREBY SAID YOKE WITH ITS SPRINGABLE ARMS MAY BE MADE IN ONE PIECE AND WHEREBY SAID SHELF AND SHELF SUPPORT STRUCTURE MAY BE MADE IN ONE PIECE.