Claims
- 1. A high pressure suction box in a paper machine, comprising
means defining a vacuum chamber through which suction is applied, ribs adapted to load a wire, said ribs being arranged such that spaces are defined between said ribs and communicate with said vacuum chamber, loading means arranged in associated with said ribs to load said ribs toward the wire, and retaining means for retaining said ribs, said retaining means being structured and arranged such that while suction is applied through said vacuum chamber and said spaces between said ribs, said ribs cause the wire to curve while running over said ribs such that tension of the wire lowers a normal force produced by the suction, wherein said retaining means comprise a deck, said ribs being fixedly mounted in said deck.
- 2. The suction box of claim 1, wherein said deck is stationary and curved.
- 3. The suction box of claim 1, further comprising
displacement means arranged in connection with the suction box for displacing the suction box toward and away from the wire.
- 4. The suction box of claim 1, wherein on an opposite side of the wire relative to the suction box there is no device or equivalent.
- 5. The suction box of claim 1, wherein on an opposite side of the wire relative to the suction box a roll is arranged.
- 6. An arrangement for transferring a web from a first wire to a second wire in a paper machine, comprising
first guide means for guiding the first wire to support the web over a run thereof, a high pressure suction box including
means defining a vacuum chamber through which suction is applied, adjustable ribs adapted to load the first wire, said ribs being arranged such that spaces are defined between said ribs and communicate with said vacuum chamber, loading means arranged in associated with said ribs to load said ribs toward the first wire, and retaining means for retaining said ribs, said retaining means being structured and arranged such that while suction is applied through said vacuum chamber and said spaces between said ribs, said ribs cause the wire to curve while running over said ribs such that tension of the wire lowers a normal force produced by the suction, wherein said retaining means comprise a deck, said ribs being fixedly mounted in said deck, second guide means for guiding the second wire to receive the web from the first wire.
- 7. The arrangement according to claim 6, wherein on an opposite side of the wire relative to the suction box there is no device or equivalent.
- 8. The arrangement according to claim 6, further comprising:
a roll arranged in opposed relationship to said suction box such that the first and second wires run between said roll and said suction box, said roll having an open-faced mantle defining a suction chamber, the web being transferred from the first wire to the second during its passage between said suction box and said roll.
Priority Claims (1)
Number |
Date |
Country |
Kind |
965277 |
Dec 1996 |
FI |
|
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a divisional application of U.S. patent application Ser. No. 09/417,750 filed May 27, 1999 which in turn is a divisional application of U.S. patent application Ser. No. 08/998,432 filed Dec. 26, 1997.
Divisions (2)
|
Number |
Date |
Country |
Parent |
09417750 |
May 1999 |
US |
Child |
09948442 |
Sep 2001 |
US |
Parent |
08998432 |
Dec 1997 |
US |
Child |
09417750 |
May 1999 |
US |