Machine for slitting tissues

Claim 1

A HYDRAULIC FEED FOR A TISSUE SLITTER COMPRISING: A BOTTOM ORIENTATION PLATE AT LEAST PART OF WHICH IS TRANSPARENT, A COVER ORIENTATION PLATE AT LEAST PART OF WHICH IS TRANSPARENT, MEANS TO SUPPORT SAID PLATES SLIGHTLY SEPARATED FROM AND PARALLEL TO EACH OTHER, THUS FORMING A TISSUE FEED THROAT, OPPOSED LIQUID ORIFICES PASSING PERPENDICULARLY THROUGH EACH OF SAID PLATES, MEANS TO SUPPLY A LIQUID UNDER PRESSURE TO EACH OF SAID ORIFICES, AN ADDITIONAL SEPARATE TISSUE SPREADING ORIFICE IN AT LEAST ONE OF SAID PLATES, A THREADING ORIFICE IN AT LEAST ONE OF SAID PLATES DIRECTED IN THE DIRECTION OF TISSUE TRAVELING THROUGH THE TISSUE FEED THROAT ADJACENT THE ENTRANCE TO THE THROAT, A BRAKING ORIFICE DIRECTED OPPOSED TO THE DIRECTION OF TISSUE TRAVEL TO REGULATE THE TISSUE FEED SPEED, MEANS TO CONTROL LIQUID SUPPLY TO SAID THREADING ORIFICE, AND ALTERNATIVELY TO SAID OPPOSED ORIFICES, SAID SPREADING ORIFICE, AND SAID BRAKING ORIFICE, SLITTER MEANS LOCATED ADJACENT THE EXIT OF THE TISSUE FEED THROAT, AND MEANS TO PASS A BEAM OF LIGHT THROUGH SAID TRANSPARENT PARTS OF THE ORIENTATION PLATES, A PHOTOCELL TO DETECT INTERRUPTION OF SAID LIGHT BEAM, AND CONTROL MEANS, INCLUDING TIME DELAY MEANS, ACTIVATED BY SAID PHOTOCELL, AND GOVERNING SAID MEANS TO CONTROL LIQUID SUPPLY, WHEREBY THE PHOTOCELL SENSES THE PRESENCE OF TISSUE IN THE TISSUE FEED THROAT AND ACTIVATES THE CONTROL MEANS, WHICH AFTER A TIME DELAY TO PERMIT THE FRONT END OF THE TISSUE TO PASS THE SLITTER MEANS, SUPPLIES LIQUID UNDER PRESSURE TO THE SPREADING ORIFICE, THE OPPOSED LIQUID ORIFICE AND BRAKING ORIFICE FOR SPREADING AND FEEDING THE TISSUE AND STOPS THE SUPPLY OF LIQUID TO SAID THREADING ORIFICES, SAID CONTROL MEANS, ON THE ADVANCE OF THE TRAILING END OF THE TISSUE PAST THE PHOTOCELL, BEING ACTIVATED AFTER A TIME DELAY TO PERMIT THE TRAILING END OF THE TISSUE TO PASS THE SLITTER MEANS, STOPS THE FLOW OF LIQUID UNDER PRESSURE TO THE SPREADING ORIFICES, THE OPPOSED LIQUID ORIFICE AND BRAKING ORIFICE AND INITIATES THE LIQUID SUPPLY TO SAID THREADING ORIFICE.