Apparatus for trimming both edges of a multilayer paper web
Abstract
Abstract THE PRESENT INVENTION RELATES TO AN IMPROVEMENT OF A PAPER-MAKING APPARATUS FOR MAKING PILED PAPER BY MEANS OF PLURAL CYLINDERS FOR MAKING PAPER, AND PROVIDES SUCH CHARACTERISTICS THAT THE PILED PAPER, WHICH IS MADE INTO SHEET AND HELD AND DEHYDRATED BETWEEN FELT BELTS, IS IMMEDIATELY CONVEYED TO AN EDGE-CUTTING ROLL WITHOUT BEING REMOVED FROM THE FELT BELT IN CONTRACT WITH THE ROLL AND BOTH EDGES OF THE PILED PAPER ARE CUT AND ARRANGED STRAIGHTLY BY WATER JETS. ON THE CUTTING ROLL ARE FORMED PERIPHERAL GROOVES IN THE NEIGHBORHOOD OF BOTH ENDS OF THE OUTER PERIPHERY THEREOF, AND THE WATER JET NOZZLES SPRAY INTO THESE PERIPHERAL GROOVES. THUS, WHILE THE PILED PAPER IS IN CONTACT WITH THE CUTTING ROLL, BOTH EDGES THEREOF ARE TRIMMED. THUS, THE PILED PAPER IS ALWAYS IN CONTACT WITH THE FELT BELT UNTIL IT IS CONVEYED TO THE CUTTING ROLL AND BOTH OF ITS EDGES ARE TRIMMED SO THAT THERE PROVIDED SUCH EFFECT THAT THE PAPER IS PREVENTED FROM BREAKING EVEN IN THE PILED STATE WHICH IS NORMALLY SUSCEPTIBLE TO DAMAGE.
Inventors
- 👤 Keiji Miyamoto
Bibliographic Details
Claims Analysis
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |