GB850287A - Improvements in or relating to suction rolls - Google Patents

Improvements in or relating to suction rolls

Info

Publication number
GB850287A
GB850287A GB80/57A GB8057A GB850287A GB 850287 A GB850287 A GB 850287A GB 80/57 A GB80/57 A GB 80/57A GB 8057 A GB8057 A GB 8057A GB 850287 A GB850287 A GB 850287A
Authority
GB
United Kingdom
Prior art keywords
holes
inches
speed
jan
paper
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
GB80/57A
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.)
Beloit Iron Works Inc
Original Assignee
Beloit Iron Works Inc
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 Beloit Iron Works Inc filed Critical Beloit Iron Works Inc
Publication of GB850287A publication Critical patent/GB850287A/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
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • D21F3/105—Covers thereof

Landscapes

  • Advancing Webs (AREA)

Abstract

850,287. Suction rolls of paper-making machines. BELOIT IRON WORKS. Jan. 1, 1957 [Jan. 6, 1956], No. 80/57. Drawings to Specification. Class 96. The holes in the shell of a suction roll of a paper-making machine are so positioned that noise is minimized when the machine is running at normal speed, the holes being in a regularly-recurring pattern of rows, inclined slightly to an axial line on the roll, and generally circumferential columns. The holes are of a depth h of 1 to 4 inches and are spaced apart less than 3h - inches, while the peripheral spacing is such 2 that the sound caused by the two holes is 180 sh degrees out of phase, i.e. - inches, s being the 30c peripheral speed in feet per minute to produce noise cancellation, and c being the speed of sound in air in feet per second. Specification 509,436 is referred to.
GB80/57A 1956-01-06 1957-01-01 Improvements in or relating to suction rolls Expired GB850287A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US850287XA 1956-01-06 1956-01-06

Publications (1)

Publication Number Publication Date
GB850287A true GB850287A (en) 1960-10-05

Family

ID=22189011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB80/57A Expired GB850287A (en) 1956-01-06 1957-01-01 Improvements in or relating to suction rolls

Country Status (1)

Country Link
GB (1) GB850287A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255473B (en) * 1961-05-29 1967-11-30 Sandusky Foundry & Machine Com Method for producing a jacket for a suction press roll in paper machines
EP1113106A2 (en) * 1999-12-29 2001-07-04 Voith Paper Patent GmbH Noise reduction for suction roll

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255473B (en) * 1961-05-29 1967-11-30 Sandusky Foundry & Machine Com Method for producing a jacket for a suction press roll in paper machines
EP1113106A2 (en) * 1999-12-29 2001-07-04 Voith Paper Patent GmbH Noise reduction for suction roll
EP1113106A3 (en) * 1999-12-29 2002-01-23 Voith Paper Patent GmbH Noise reduction for suction roll

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