GB1382791A - Vacuum drainage device - Google Patents

Vacuum drainage device

Info

Publication number
GB1382791A
GB1382791A GB1270271A GB1270271A GB1382791A GB 1382791 A GB1382791 A GB 1382791A GB 1270271 A GB1270271 A GB 1270271A GB 1270271 A GB1270271 A GB 1270271A GB 1382791 A GB1382791 A GB 1382791A
Authority
GB
United Kingdom
Prior art keywords
wire
leading
trailing surface
trailing
drainage device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1270271A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PULMAC RESEARCH Ltd
Original Assignee
PULMAC RESEARCH Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PULMAC RESEARCH Ltd filed Critical PULMAC RESEARCH Ltd
Priority to GB1270271A priority Critical patent/GB1382791A/en
Priority to CA141,242A priority patent/CA990990A/en
Publication of GB1382791A publication Critical patent/GB1382791A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/52—Suction boxes without rolls
    • D21F1/523—Covers thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/483—Drainage foils and bars

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

1382791 Suction boxes PULMAC RESEARCH Ltd 27 June 1972 [3 May 1971] 12702/ 71 Heading D2A A device for draining a wire 10 comprises a vacuum box having spaced-apart foils 14 each of which includes a leading wire-supporting surface and a recessed trailing surface, the recess having a depth such that the trailing surface does not support the wire but such that the distance of the trailing surface from the wire is not great enough to allow water toflow between the wire and the trailing surface. An intermediate surface connecting the recessed trailing surface to the leading surface diverges from the leading surface at an angle greater than 5‹ and is shown as 90‹.
GB1270271A 1971-05-03 1971-05-03 Vacuum drainage device Expired GB1382791A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1270271A GB1382791A (en) 1971-05-03 1971-05-03 Vacuum drainage device
CA141,242A CA990990A (en) 1971-05-03 1972-05-03 Vacuum drainage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1270271A GB1382791A (en) 1971-05-03 1971-05-03 Vacuum drainage device

Publications (1)

Publication Number Publication Date
GB1382791A true GB1382791A (en) 1975-02-05

Family

ID=10009544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1270271A Expired GB1382791A (en) 1971-05-03 1971-05-03 Vacuum drainage device

Country Status (2)

Country Link
CA (1) CA990990A (en)
GB (1) GB1382791A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0241439A2 (en) * 1986-01-08 1987-10-14 M/K Systems Inc. Dewatering apparatus
EP0471469A1 (en) * 1990-07-30 1992-02-19 Mitsubishi Jukogyo Kabushiki Kaisha Sheet-forming apparatus for a paper machine
US5248392A (en) * 1990-07-30 1993-09-28 Mitsubishi Jukogyo Kabushiki Kaisha Sheet-forming apparatus for a twin wire paper machine with positive pulse shoe blades

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0241439A2 (en) * 1986-01-08 1987-10-14 M/K Systems Inc. Dewatering apparatus
EP0241439A3 (en) * 1986-01-08 1988-01-07 M/K Systems Inc. Dewatering apparatus
EP0471469A1 (en) * 1990-07-30 1992-02-19 Mitsubishi Jukogyo Kabushiki Kaisha Sheet-forming apparatus for a paper machine
US5248392A (en) * 1990-07-30 1993-09-28 Mitsubishi Jukogyo Kabushiki Kaisha Sheet-forming apparatus for a twin wire paper machine with positive pulse shoe blades

Also Published As

Publication number Publication date
CA990990A (en) 1976-06-15

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414A Case decided by the comptroller ** specification amended (sect. 14/1949)
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PE20 Patent expired after termination of 20 years