US2711575A - Method for covering cylinders with foraminous materials - Google Patents

Method for covering cylinders with foraminous materials Download PDF

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US2711575A
US2711575A US231708A US23170851A US2711575A US 2711575 A US2711575 A US 2711575A US 231708 A US231708 A US 231708A US 23170851 A US23170851 A US 23170851A US 2711575 A US2711575 A US 2711575A
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Prior art keywords
cylinder
screen
tension
securing
free end
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US231708A
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Lawrence G Zesbaugh
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Minnesota and Ontario Paper Co
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Minnesota and Ontario Paper Co
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Priority to US231708A priority Critical patent/US2711575A/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/06—Rotary screen-drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/48—Stretching devices for screens
    • 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
    • D21F1/60—Cylinder moulds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J1/00—Fibreboard
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/49547—Assembling preformed components
    • Y10T29/49558—Includes securing removable cover on roller
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49867—Assembling or joining with prestressing of part of skin on frame member
    • Y10T29/49869—Assembling or joining with prestressing of part of skin on frame member by flexing

Definitions

  • This invention relates to a new and useful improvement in the method of securing foraminous covering to a cylinder and more particularly to the method for securing a screen to a forming roll used in connection with making fiber composition board.
  • pulp slurry is supplied to a forming apparatus which may consist of two cylinders which form the sheet and remove a large portion of the water.
  • the pulp when furnished to the forming apparatus, usually has a high percentage of water-around 98% to 99%. This water has to be removed in the forming of the board and the greater amount of water removed, the less the drying problem that occurs later.
  • Fiber composition boards are usually made in widths of 8 to 12 and are divided into sheets after forming of about 12' square.
  • On the surface of a forming roll there must be secured a screen or like material over the perforated surface of the cylinder so that when the water is forced out by the pressure applied to the sheet being formed it can be quickly removed.
  • the screen secured to the surface of the forming cylinder must be secured under tension, which tension must be substantially uniform if the life of the screen is to be of any extended length.
  • One of the principal objects of this invention is to secure a screen on a forming roll under tension so that the tension is substantially uniform for the full circumference of the forming cylinder.
  • Figure 1 is a view of the first step of securing a screen to a cylinder surface
  • Figure 2 is a view showing the screen laid upon the surface of the cylinder under tension prior to securing the ends of the screen together;
  • Figure 3 is a sectional view with parts broken away of the forming cylinder just before the connecting of the ends of the screen together;
  • Figure 4 is a fragmentary view of the forming cylinder with portions broken away showing how the screen is held under tension while the ends are to be secured together.
  • FIG. 2 represents a forming cylinder of the kind shown in Patent No. 2,662,- 451.
  • the screen 16 is suitably attached to the perforated cylinder by any suitable means, such as wires shown at 12.
  • the securing means 12 is placed adjacent the end of the screen so as to leave a free end or tail 14.
  • To the other end of the screen is secured members 18 which extend entirely across the screen, and to this member is attached suitable cable-like members 20 and to the cables there is attached a hook 22.
  • the hook 22 is carried by any suitable device (not shown) for holding tension upon the screen while it is being wound upon the sur- "nited States Patent face of the cylinder; for example, a block and tackle may be used.
  • the roll is moved in the direction shown by the arrow in Figure l and the screen is laid under tension on the surface of the cylinder 10. While the tension is still upon the screen as shown in Figure 2, a screen tensioning device is laid upon the screen as shown in Figure 2, with the member 24 which extends entirely across the cylinder width with the member 34 attached thereto and extending beyond the edges of the cylinder. Member 30 is spaced apart from member 24 but extends substantially the full width of the cylinder. Members 24 and 30 are connected together by bars 28. The space between bars 24 and 30 leaves a space through which securing wires or other means may be inserted. These wires are then secured to nut-like members 32 which are in spaced relation on bar 30.
  • member 34 To the opposite end of member 34 is secured rods 36 which are'secured to a suitable member such as pipe 42 extending across the width of the cylinder.
  • the pipe 42 usually is supported against a web or spoke 40 of the forming cylinder 10.
  • nuts 38 and 46 On opposite ends of the rods 46 are nuts 38 and 46.
  • the tension is tightened to any required degree by tightening the nuts 38 or 46.
  • the free end of the screen is released from the block and tackle or other tension device.
  • the free end 56 is then cut so that in conjunction with the end 14 the cylinder surface will just be covered with the screen.
  • the ends of the screen are then secured together as by welding or any other suitable means.
  • the tie wires 12 and those secured to the bolts 32 are removed. This permits the screen to assume a uniform tension around the entire surface of the cylinder. The tensioning device is then removed and the cylinder is ready for use or for other steps required to complete its construction.
  • the screen must be laid upon the surface of the cylinder under tension and held under tension while the ends are being united. After the ends are secured together the securing means such as wire 12 must be removed so that uniform tension will be on the screen entirely around the cylinder it being understood that a minor portion of the screen on the cylinder surface is not under tension while the major portion of the screen laid upon the cylinder is greater than the ultimate tension required so that when the screen is secured in place there is a substantially uniform tension thereon entirely around the cylinder.
  • the method of covering a metal cylinder with wire screen comprises, securing the wire screen adjacent to but spaced apart from one end to the surface of the cylinder whereby a free end not under tension on the surface of the cylinder is provided, turning the cylinder to lay the screen on the surface thereof while maintaining the tension thereon, securing the screen to the surface of the cylinder at a second point whereby a second free end is provided upon the cylinder surface, securing the free ends on the cylinder surface together to form an endless band and then releasing the securing means from the screen whereby substantially uniform tension on the endless screen band is provided around the'entire surface.
  • the method of covering a metallic roll with a metallic wire screen under tension comprising tying a screen to the surface of the roll at a point, spaced apart from the end of the screen to leave a free end upon the cylinder surface; turning the roll to lay the screen on the surface of the cylinder under tension for a major portion thereof; tying the screen at a second point to the cylinder surface to provide a second free end; welding the free ends of the wire screen together to form the screen into an endless band and then removing the tying means whereby substantially uniform tension is provided on the endless band around the entire surface.
  • a method of covering a cylinder with flexible foraminous surface member comprising tying the flexible foraminous member to the cylinder surface adjacent but spaced apart from the end thereof, leaving a free end upon the cylinder surface; turning the cylinder to lay the References Cited in the -file'of this patent UNITED STATES PATENTS 885,549 Duzee Apr. 21, 1908 905,917 Perkins Dec. 8, 1908 1,152,110 Lockwood Aug. 31, 1915 1,273,074 Roe July 16, 1918 1,458,477 Gamble June 12, 1923 1,947,462 Doorbar Feb. 20, 1934 2,219,085 Watson Oct. 22, 1940 2,221,696 Sutton Nov. 12, 1940 2,293,794 Bell Aug. 25, 1942 2,331,504 Raymond Oct. 12, 1943 2,338,847 Hansen Jan. 11, 1944 2,341,097 Heebink Feb. 8, 1944 2,352,340 Oswald June 27, 1944

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Description

L. e. ZESBAUGH 2,711,575 METHOD FOR COVERING CYLINDERS WITH FORAMINOUS MATERIALS Filed June 15, 1951 June 28, 1955 38 INVEYTOR. I
LAWRENCE G. ZESBAUGH METHOD FOR COVERING CYLINDERS WITH FORAMINOUS MATERIALS Lawrence G. Zesbaugh, Minneapolis, Minn, assignor to Minnesota and Ontario Paper Company, Minneapolis, Minn.
Application June 15, 1951, Serial No. 231,708
4 Claims. (Cl. 29-148.4)
This invention relates to a new and useful improvement in the method of securing foraminous covering to a cylinder and more particularly to the method for securing a screen to a forming roll used in connection with making fiber composition board.
In the manufacture of fiber composition board, pulp slurry is supplied to a forming apparatus which may consist of two cylinders which form the sheet and remove a large portion of the water. The pulp, when furnished to the forming apparatus, usually has a high percentage of water-around 98% to 99%. This water has to be removed in the forming of the board and the greater amount of water removed, the less the drying problem that occurs later. Fiber composition boards are usually made in widths of 8 to 12 and are divided into sheets after forming of about 12' square. On the surface of a forming roll there must be secured a screen or like material over the perforated surface of the cylinder so that when the water is forced out by the pressure applied to the sheet being formed it can be quickly removed. The screen secured to the surface of the forming cylinder must be secured under tension, which tension must be substantially uniform if the life of the screen is to be of any extended length.
One of the principal objects of this invention is to secure a screen on a forming roll under tension so that the tension is substantially uniform for the full circumference of the forming cylinder.
Other and further objects of the invention and the advantages of the same will be pointed out hereinafter and specifically indicated in the appended claims or be obvious to one skilled in the art upon the understanding of the present review.
Referring to the drawings:
Figure 1 is a view of the first step of securing a screen to a cylinder surface;
Figure 2 is a view showing the screen laid upon the surface of the cylinder under tension prior to securing the ends of the screen together;
Figure 3 is a sectional view with parts broken away of the forming cylinder just before the connecting of the ends of the screen together; and
Figure 4 is a fragmentary view of the forming cylinder with portions broken away showing how the screen is held under tension while the ends are to be secured together.
Referring to the drawings in detail, represents a forming cylinder of the kind shown in Patent No. 2,662,- 451. The screen 16 is suitably attached to the perforated cylinder by any suitable means, such as wires shown at 12. The securing means 12 is placed adjacent the end of the screen so as to leave a free end or tail 14. To the other end of the screen is secured members 18 which extend entirely across the screen, and to this member is attached suitable cable-like members 20 and to the cables there is attached a hook 22. The hook 22 is carried by any suitable device (not shown) for holding tension upon the screen while it is being wound upon the sur- "nited States Patent face of the cylinder; for example, a block and tackle may be used.
The roll is moved in the direction shown by the arrow in Figure l and the screen is laid under tension on the surface of the cylinder 10. While the tension is still upon the screen as shown in Figure 2, a screen tensioning device is laid upon the screen as shown in Figure 2, with the member 24 which extends entirely across the cylinder width with the member 34 attached thereto and extending beyond the edges of the cylinder. Member 30 is spaced apart from member 24 but extends substantially the full width of the cylinder. Members 24 and 30 are connected together by bars 28. The space between bars 24 and 30 leaves a space through which securing wires or other means may be inserted. These wires are then secured to nut-like members 32 which are in spaced relation on bar 30. To the opposite end of member 34 is secured rods 36 which are'secured to a suitable member such as pipe 42 extending across the width of the cylinder. The pipe 42 usually is supported against a web or spoke 40 of the forming cylinder 10. On opposite ends of the rods 46 are nuts 38 and 46. After the tying wires 48 are inserted and tied as shown in Figure 3 and 4, the tension is tightened to any required degree by tightening the nuts 38 or 46. After the tension has been properly tightened the free end of the screen is released from the block and tackle or other tension device. The free end 56 is then cut so that in conjunction with the end 14 the cylinder surface will just be covered with the screen. The ends of the screen are then secured together as by welding or any other suitable means. After the welding is completed the tie wires 12 and those secured to the bolts 32 are removed. This permits the screen to assume a uniform tension around the entire surface of the cylinder. The tensioning device is then removed and the cylinder is ready for use or for other steps required to complete its construction.
It is to be understood that the screen must be laid upon the surface of the cylinder under tension and held under tension while the ends are being united. After the ends are secured together the securing means such as wire 12 must be removed so that uniform tension will be on the screen entirely around the cylinder it being understood that a minor portion of the screen on the cylinder surface is not under tension while the major portion of the screen laid upon the cylinder is greater than the ultimate tension required so that when the screen is secured in place there is a substantially uniform tension thereon entirely around the cylinder.
What is claimed is:
l. The method of covering a metal cylinder with wire screen comprises, securing the wire screen adjacent to but spaced apart from one end to the surface of the cylinder whereby a free end not under tension on the surface of the cylinder is provided, turning the cylinder to lay the screen on the surface thereof while maintaining the tension thereon, securing the screen to the surface of the cylinder at a second point whereby a second free end is provided upon the cylinder surface, securing the free ends on the cylinder surface together to form an endless band and then releasing the securing means from the screen whereby substantially uniform tension on the endless screen band is provided around the'entire surface.
2. The method of covering a metallic roll with a metallic wire screen under tension comprising tying a screen to the surface of the roll at a point, spaced apart from the end of the screen to leave a free end upon the cylinder surface; turning the roll to lay the screen on the surface of the cylinder under tension for a major portion thereof; tying the screen at a second point to the cylinder surface to provide a second free end; welding the free ends of the wire screen together to form the screen into an endless band and then removing the tying means whereby substantially uniform tension is provided on the endless band around the entire surface.
3. A method of applying a sheet of screen Wire to a perforated cylinder surface to provide a fibrous composition perforated forming cylinder, wherein the sheet adjacent an end but spaced apart thereof is tied by spaced apart wires to the surface of the perforated cylinder whereby a free end is provided upon the surface of the cylinder; rotating the cylinder to wrap the sheet screen tightly upon perforated cylinder surface for a major portion thereof; tying the sheet screen by spaced apart wires to the cylinder surface at a second point to provide a second free end upon the cylinder surface; securing the free ends of the sheet screen together and then removing the tying wires whereby substantially uniform tension is provided on the sheet screen entirely around the perforated cylinder.
4. A method of covering a cylinder with flexible foraminous surface member comprising tying the flexible foraminous member to the cylinder surface adjacent but spaced apart from the end thereof, leaving a free end upon the cylinder surface; turning the cylinder to lay the References Cited in the -file'of this patent UNITED STATES PATENTS 885,549 Duzee Apr. 21, 1908 905,917 Perkins Dec. 8, 1908 1,152,110 Lockwood Aug. 31, 1915 1,273,074 Roe July 16, 1918 1,458,477 Gamble June 12, 1923 1,947,462 Doorbar Feb. 20, 1934 2,219,085 Watson Oct. 22, 1940 2,221,696 Sutton Nov. 12, 1940 2,293,794 Bell Aug. 25, 1942 2,331,504 Raymond Oct. 12, 1943 2,338,847 Hansen Jan. 11, 1944 2,341,097 Heebink Feb. 8, 1944 2,352,340 Oswald June 27, 1944

Claims (1)

1. THE METHOD OF COVERING A METAL CYLINDER WITH WIRE SCREEN COMPRISES, SECURING THE WIRE SCREEN ADJACENT TO BUT SPACED APART FROM ONE END TO THE SURFACE OF THE CYLINDER WHEREBY A FREE END NOT UNDER TENSION ON THE SURFACE OF THE CYLINDER IS PROVIDED, TURNING THE CYLINDER TO LAY THE SCREEN ON THE SURFACE THEREOF WHILE MAINTAINING THE TENSION THEREON, SECURING THE SCREEN TO THE SURFACE OF THE CYLINDER AT A SECOND POINT WHEREBY A SECOND FREE END IS PROVIDED UPON THE CYLINDER SURFACE, SECURING THE FREE ENDS ON THE CYLINDER SURFACE TOGETHER TO FORM AN ENDLESS BAND AND THEN RELEASING THE SECURING MEANS
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901820A (en) * 1955-05-24 1959-09-01 Clarin Sidney Method of covering a drum filter, or such like, with wire gauze
US2944588A (en) * 1955-10-20 1960-07-12 Seamless Covers Inc Method of mounting fabric sleeves on hollow cores to form paint rollers
US2958939A (en) * 1957-09-06 1960-11-08 Ingersoll Milling Machine Co Method of preparing and mounting measuring strips
US2972378A (en) * 1955-06-23 1961-02-21 Josephu Augustinus Fr Henricus Treatment by compression of fibrocement wet sheet material and the like
US3170223A (en) * 1961-11-13 1965-02-23 Van Dresser Specialty Corp Method of stretching and attaching an insulator to a supporting spring structure
US3453712A (en) * 1966-08-29 1969-07-08 Procter & Gamble Method of making a porous roll
US4508256A (en) * 1979-03-05 1985-04-02 The Procter & Gamble Company Method of constructing a three dimensional tubular member
US4601868A (en) * 1982-04-21 1986-07-22 The Procter & Gamble Company Method of imparting a three-dimensional fiber-like appearance and tactile impression to a running ribbon of thermoplastic film
US5140750A (en) * 1990-12-06 1992-08-25 Scapa, Inc. Spiral shrink sleeve

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US885549A (en) * 1907-10-24 1908-04-21 Willard Van Duzee Device for tightening the fabric of bed-springs.
US905917A (en) * 1905-12-18 1908-12-08 William A Perkins Wire-bending machine.
US1152110A (en) * 1914-11-28 1915-08-31 Hyatt Roller Bearing Co Process of making spirally-wound rolls.
US1273074A (en) * 1916-10-20 1918-07-16 Henry La Roe Bed-spring tightener.
US1458477A (en) * 1922-09-08 1923-06-12 A W Penrose And Company Ltd Method for applying sheets to printing cylinders
US1947462A (en) * 1930-11-29 1934-02-20 Du Pont Film Mfg Corp Method of making casting wheels
US2219085A (en) * 1938-09-01 1940-10-22 Charles G Watson Method of covering rollers
US2221696A (en) * 1939-09-21 1940-11-12 Lindsay Wire Weaving Co Apparatus for forming a woven wire belt
US2293794A (en) * 1941-07-30 1942-08-25 United Shoe Machinery Corp Adhesive applying roll
US2331504A (en) * 1941-08-20 1943-10-12 Raymond Gwynne Method of making pressure vessels and the like
US2338847A (en) * 1941-06-13 1944-01-11 Andrews And Goodrich Inc Method of making ribbed rolls for slashing machines and other textile machines
US2341097A (en) * 1942-12-14 1944-02-08 Res Prod Corp Filter
US2352340A (en) * 1942-04-10 1944-06-27 Oliver United Filters Inc Filter

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US905917A (en) * 1905-12-18 1908-12-08 William A Perkins Wire-bending machine.
US885549A (en) * 1907-10-24 1908-04-21 Willard Van Duzee Device for tightening the fabric of bed-springs.
US1152110A (en) * 1914-11-28 1915-08-31 Hyatt Roller Bearing Co Process of making spirally-wound rolls.
US1273074A (en) * 1916-10-20 1918-07-16 Henry La Roe Bed-spring tightener.
US1458477A (en) * 1922-09-08 1923-06-12 A W Penrose And Company Ltd Method for applying sheets to printing cylinders
US1947462A (en) * 1930-11-29 1934-02-20 Du Pont Film Mfg Corp Method of making casting wheels
US2219085A (en) * 1938-09-01 1940-10-22 Charles G Watson Method of covering rollers
US2221696A (en) * 1939-09-21 1940-11-12 Lindsay Wire Weaving Co Apparatus for forming a woven wire belt
US2338847A (en) * 1941-06-13 1944-01-11 Andrews And Goodrich Inc Method of making ribbed rolls for slashing machines and other textile machines
US2293794A (en) * 1941-07-30 1942-08-25 United Shoe Machinery Corp Adhesive applying roll
US2331504A (en) * 1941-08-20 1943-10-12 Raymond Gwynne Method of making pressure vessels and the like
US2352340A (en) * 1942-04-10 1944-06-27 Oliver United Filters Inc Filter
US2341097A (en) * 1942-12-14 1944-02-08 Res Prod Corp Filter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901820A (en) * 1955-05-24 1959-09-01 Clarin Sidney Method of covering a drum filter, or such like, with wire gauze
US2972378A (en) * 1955-06-23 1961-02-21 Josephu Augustinus Fr Henricus Treatment by compression of fibrocement wet sheet material and the like
US2944588A (en) * 1955-10-20 1960-07-12 Seamless Covers Inc Method of mounting fabric sleeves on hollow cores to form paint rollers
US2958939A (en) * 1957-09-06 1960-11-08 Ingersoll Milling Machine Co Method of preparing and mounting measuring strips
US3170223A (en) * 1961-11-13 1965-02-23 Van Dresser Specialty Corp Method of stretching and attaching an insulator to a supporting spring structure
US3453712A (en) * 1966-08-29 1969-07-08 Procter & Gamble Method of making a porous roll
US4508256A (en) * 1979-03-05 1985-04-02 The Procter & Gamble Company Method of constructing a three dimensional tubular member
US4601868A (en) * 1982-04-21 1986-07-22 The Procter & Gamble Company Method of imparting a three-dimensional fiber-like appearance and tactile impression to a running ribbon of thermoplastic film
US5140750A (en) * 1990-12-06 1992-08-25 Scapa, Inc. Spiral shrink sleeve

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