Vertical paper machine wherein stock impinges wires below the breast rolls
Abstract
Abstract IN A TWO-WIRE VERTICAL PAPER MACHINE, OPPOSED DOWNWARDLY TRAVELING REACHES OF THE TWO WIRES ARE GUIDED IN CONVERGING RELATION TO DEFINE A FORMING ZONE OF PREDETERMINED DIMENSIONS, AND A FREE STANDING SHEET-LIKE STOCK JET OF A THICKNESS LESS THAN THE WIDTH OF THE MOUTH OF THE FORMING ZONE IS DELIVERED INTO THE FORMING ZONE IN SUCH MANNER THAT IT DOES NOT IMPINGE ON EITHER OF THE WIRES UNTIL IT REACHES A LEVEL SUFFICIENTLY BELOW THE BREAST ROLLS TO AVOID THEIR PUMPING ACTION. THE RELATIVE SPEEDS OF THE WIRES AND THE STOCK JET ARE REGULATED TO PRODUCE DESIRED CHARACTERISTICS IN THE PAPER SHEET I.E., SUCH AS THE RATIO OF TEAR STRENGTH IN THE CROSS MACHINE DIRECTION TO THE MACHINE DIRECTION.
Inventors
- 👤 Willard C Notbohm
- 👤 Paul M Schaffrath
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |