Multiple ply web former with divided slice chamber

  • US 3,923,593 A
  • Filed: 01/17/1974
  • Issued: 12/02/1975
  • Est. Priority Date: 12/03/1971
  • Status: Expired due to Term
First Claim
Patent Images

1. IN A MACHINE FOR MAKING A MULTI-PLY WEB SUCH AS A PAPER FROM STOCKS HAVING A SLURRY OF FIBERS IN A LIQUID CARRIER, THE COMBINATION COMPRISING:

  • A HEADBOX HAVING A LOWER WALL AND AN UPPER WALL;

    A SLICE CHAMBER CONNECTED TO THE HEADBOX HAVING A LOWER SLICE WALL AND AN UPPER SLICE WALL BEING EXTENSIONS OF THE HEADBOX WALLS, ONE OF SAID SLICE WALLS BEING PIVOTED AT ITS UPSTREAM EDGE WITH SAID SLICE WALLS TAPERED TOWARD EACH OTHER AND TERMINATING IN A SLICE OPENING;

    FLOW DIVIDER PLATES IN THE HEADBOX EXTENDING COMPLETELY ACROSS THE HEADBOX IN THE DIRECTION OF FLOW AND DIVIDING THE HEADBOX INTO SEPARATE STOCK CHAMBERS;

    SEPARATE STOOCKOCK SUPPLY MEANS TO EACH OF SAID CHAMBERS FOR DELIVERING STOCKS OF DIFFERENT PHYSICAL CHARACTERISTICS;

    FLEXIBLE SHEET MEMBERS IN THE SLICE CHAMBER SECURED AT THEIR UPSTREAM ENDS IN ALIGNMENT WITH THE PLATES WITH THEIR DOWNSTREAM ENDS BEING UNATTACHED AND EXTENDING TO THE SLICE OPENING WHEREBY THE STOCKS OF THE SEPARATE CHAMBERS DO NOT INTERMIX AND REMAIN SEPARATE FOR THE FULL TRAVEL ONTO THE FORMING SURFACE AND THE PRESSURE OF THE STOCK FLOWS ON OPPOSITE SIDES OF SAID SHET MEMBERS REMAINS EQUAL FOR UNIFORM VELOCITY FLOW AT THE SLICE OPENING, AND A FORMING SURFACE POSITIONED TO HAVE STOCK DISCHARGED THEREON FROM THE SLICE OPENING.

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