US3328236A - Bunched tube approach to a headbox of a papermaking machine - Google Patents

Bunched tube approach to a headbox of a papermaking machine Download PDF

Info

Publication number: US3328236A
Authority: US; United States
Prior art keywords: tubes; manifold; plate member; inlet plate; extending
Prior art date: 1964-06-22
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 - Lifetime

Application number

US376699A

Other languages

English (en)

Inventor

Jr William H Burgess

Girard L Calehuff

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.)

Black Clawson Co

Original Assignee

Black Clawson Co

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.)

1964-06-22

Filing date

1964-06-22

Publication date

1967-06-27

1964-06-22 Application filed by Black Clawson Co filed Critical Black Clawson Co

1964-06-22 Priority to US376699A priority Critical patent/US3328236A/en

1965-06-21 Priority to DE1965B0082484 priority patent/DE1461072B2/de

1965-06-22 Priority to SE08222/65A priority patent/SE332561B/xx

1965-06-22 Priority to FI651495A priority patent/FI50352C/fi

1965-06-22 Priority to GB26448/65A priority patent/GB1119561A/en

1967-06-27 Application granted granted Critical

1967-06-27 Publication of US3328236A publication Critical patent/US3328236A/en

1984-04-09 Assigned to WALTER E. HELLER & COMPANY, INC. reassignment WALTER E. HELLER & COMPANY, INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BLACK CLAWSON COMPANY, THE

1984-06-27 Anticipated expiration legal-status Critical

1986-11-03 Assigned to BLACK CLAWSON COMPANY, THE reassignment BLACK CLAWSON COMPANY, THE RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: HELLER FINANCIAL, INC. F/K/A/ WALTER E. HELLER & COMPANY INC.

Status Expired - Lifetime legal-status Critical Current

Links

Images

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
- D21F1/02—Head boxes of Fourdrinier machines
- D21F1/024—Details of the feed chamber
- 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
- D21F1/02—Head boxes of Fourdrinier machines
- 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
- D21F1/02—Head boxes of Fourdrinier machines
- D21F1/026—Details of the turbulence section
- 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
- D21F1/02—Head boxes of Fourdrinier machines
- D21F1/028—Details of the nozzle section

Definitions

the present invention relates to a novel apparatus for delivering a dilute fiber suspension to the forming member of a papermaking machine or similar, non-Woven fibrous web forming device.
headboxes the function of such apparatus, generally referred to as headboxes, is to transform the flow of a dilute fiber suspension, or stock, approaching the forming member to a uniform, stable jet for deposition on the forming member while maintaining the fiber dispersion within the stock as uniform as possible.
the jet delivered to the forming member often is unstable; exhibiting cross flows, localized velocity differentials, and excessive turbulence.
the consistency of the stock delivered often varies; containing lumps and other evidence of non-uniform fiber dispersion.
the web laid may have a blotchy formation and contain variations of weight and caliper, both longitudinally and transversely thereof.
the present invention seeks to overcome these difiiculties of prior art headboxes and permit the formation of a homogenous, uniform, fibrous web by controlling the characteristics of the jet delivered to the slice.
the present invention prevents the formation of cross fiows and other fiow irregularities by immediately confining the flow as it leaves the supply manifold to a plurality of smaller, controlled streams and then maintains this condition throughout the system to the slice assembly where the smaller streams may be ejected to form a single, compound jet.
the present invention also provides means for obtaining a more thorough blending of adjacent streams at the tube outlets.
means are provided whereby the flow paths of the smaller streams are maintained free from obstructions which might occur as the result of the buildup of fiber and/or foreign material deposits at the stream inlets.
This means may taken the form of a static design or alternatively, incorporate a rotating member positioned adjacent the stream inlets.
the headbox of the present invention is compact and easily arranged to suit the space requirements of a particular installation as well as being inherently, structurally stronger than prior art headboxes of, for example, the vat type.
FIGURE 1 is an oblique view of an embodiment of the invention
FIGURE 2 is a sectional view, in elevation, of the embodiment of FIGURE 1;
FIGURE 3 is a view taken on line 3-3 of FIGURE 2 and showing the arrangement of the tubes adjacent the manifold;
FIGURE 4 is a view taken on line 44 of FIGURE 2 States Patent C) 3,328,236? Patented June 27 1967 and showing the arrangement of the tubes adjacent the slice assembly;
FIGURE 5 is a view similar to FIGURE 4 but showing a slightly different arrangement of the tubes;
FIGURES 6 and 7 are sectional views similar to FIG- URE 5 but showing alternate configurations of the tubes;
FIGURE 8 is a plan view, with portions removed, showing an embodiment of the invention incorporating means for preventing tube obstructions;
FIGURE 9 is a sectional view of the embodiment of FIGURE 8 taken on line 9-9 of FIGURE 8; I
FIGURE 10 is a sectional view taken on line 1010 of FIGURE 9;
FIGURE 11 is a view similar to FIGURE 8 showing an alternate embodiment of means for preventing tube obstructions
FIGURE 12 is a sectional view of an embodiment of the invention incorporating rotating tube-cleaning means
FIGURE 13 is a sectional view taken on line 13-13 of FIGURE 12;
FIGURE 14 is a perspective view of the inlet conduits, manifold and inlet plate of the embodiment of FIGURE 12;
FIGURE 15 is a perspective view showing the com figuration of a tube used in the headbox of the present invention for obtaining jet intermixing.
FIGURES 1 and 2 of the drawings there is shown a headbox constructed in accordance with the principles of the present invention and including a mani fold 1, a slice assembly 2, and a plurality of small diameter tubes 3, leading directly from the manifold to the slice assembly.
manifold 1 may be of more or less conventional construction and is shown as being of substantially rectangular cross-section and extending transversely of the bank of tubes 3.
manifold 1 includes top and bottom walls 4 and 5, respectively, a sidewall 6, and outwardly extending flanges 7 and 8, extending along the forward edges of top and bottom walls 4 and 5, respectively.
Manifold 1 it will be noted, tapers from a relatively large dimension adjacent its inlet end 9 to a smaller dimension adjacent its outlet end 10. In this manner, the pressure and velocity of the stock at all points along the length of the manifold may be maintained substantially constant; thereby enhancing the uniformity of flow through the individual tubes 3.
an adjustable valve Adjacent the outlet end 10 of the manifold 1, an adjustable valve (not shown) may be provided to regulate the flow through the outlet end of the manifold. Therefore, if it is desired to increase the velocity of the flow to the manifold without increasing the velocity or total fiow through the tubes, the supply rate to the inlet end of the manifold my be increased and the valve controlling the flow through the outlet end of the manifold opened an amount sufficient to account for this increased flow. The velocity in the manifold will thereby be increased; but since the additional flow caus: ing the increase will be accommodated through the in: creased opening of the outlet end valve,,the total flow through [the tubes 3 will be unaffected.
the tube inlets exhibit a tendency to become plugged by fibers or debris in the system, they can, in eifect, be flushed without disturbing the rate of flow through the tubes themselves.
the outlet end valve setting could be held constant while the flow rate to the manifold was increased.
an inlet plate member 11 is provided attached to outwardly extending flanges 7 and 8 of the manifold 1 by means of bolts, rivets or the like, as at 12.
Inlet plate member 11 has a plurality of apertures 13 formed therein and tubes 3 are attached to plate member 11 with their sidewalls each surrounding one of the apertures 13; thereby placing the tube in fluid communication with the interior of the manifold.
Tubes 3, as shown in FIGURES 1-4, may extend from the manifold 1 in substantially parallel relationship to one another for a first portion of their length, then converge to form a juxtaposed, parallel arrangement adjacent the slice assembly.
the tubes may be arranged adjacent the manifold in a plurality of pairs of horizontally extending rows 14, 15 and 16, with each of the tubes extending in spaced relation to each of the others.
the tubes then begin to converge intermediate their lengths, until each of the double rows of tubes 14, 15 and 16 has merged to form the three, single, juxtaposed rows 17, 18 and 19 shown in FIGURE 4.
Slice assembly 2 As best seen in FIGURES 1 and 2, includes upstanding sidewalls 22 and 23, a bottom wall 24, and a short backwall 25. Extending from the lower rear edge of bottom wall 23 a flange member 26 is provided and outlet plate member 20 is bolted thereto and to backwall by means of bolts, rivets or the like, as at 27. Extending across the slice assembly, and journaled at its ends in the upstanding sidewalls 22 and 23, is a support member 28.
stock is received from a suitable source and flows into the tapered manifold 1 through its inlet end 9 towards its outlet end 10.
portions of the flow are tapped off through the apertures 13 formed in inlet plate member 11 to form a plurality of small diameter streams. These smaller streams are then immediately confined in the relatively small diameter tubes 3 and remain in this condition until they are ejected at the slice assembly.
the turning of the fiow from the manifold towards the slice results in a tendency of the turned stock to flow at an angle to the flow through the manifold. That is, parallel to neither the intended, redirected flow, nor the manifold flow but at some angle therebetween. In conventional headboxes, this tendency results in the establishment of cross flows, which, one established, may be carried through the headbox to the slice where they may seriously disrupt proper web formation. In the headbox of the present invention, however, as the flow passes from the manifold 1, it is immediately confined in the small tubes 3 and maintained in this confined state throughout its entire travel to the slice where it is deposited on the forming member 62 as a compound jet.
the entire fiow may be maintained in a fully turbulent.
the tubes may assume a rectangular or square cross-section shape and be arranged in either vertically stacked relation, as in the embodiment of FIG- URE 4, or with the center row 37 offset inwardly of the top and bottom rows 38 and 39.
Another possible arrangement is, as seen in FIGURE 7, with the use of a polygonal tube. As shown in FIGURE 7, hexagonally cross sectioned tubes 40 are ideally suited for the internested relationship shown.
the fibers Since the stock flowing through the system of the present invention is essentially a forced suspension of solids, there exists a tendency for the fibers to staple out upon obstructions to flow. While in most instances this problem can be obviated by proper inlet configuration and control of stock velocities through the system, additional means may often be used to great advantage to alleviate this problem. Thus, for example, where the velocity of the stock through the system must be kept fairly low, there will be a tendency for the fibers suspended in the stock to accumulate between or adjacent to inlets of the tubes. If this occurs, the resulting fiber accumulations may pass as lumps through the tubes to the web forming surface. This, of course, results in lumps in the finished web which are easily separated from the web and results in holes.
the fiber accumulations may cause blockage of one or more of the tubes adjacent their inlet ends and destroy the homogeneity of the compound slice jet.
means may be provided as shown in FIGURES 8-10, which creates an area of high turbulence adjacent the inlet ends of the tubes 3, and thereby prevents the accumulation, to any appreciable extent, of either fiber bundles or debris on the land areas between the apertures in the inlet plate.
a manifold 41 is provided, similar to the manifold 1, and having top and bottom wall portions 42 and 43 with a sidewall portion 44 extending therebetween. Also extending between the top and bottom walls 42 and 43, and in spaced relation to sidewall 44, an inlet plate member 45 is provided having a series of apertures 46 formed therein. As in the case of the previously described embodiments, the inlet plate member may be bolted to upstanding flanges 47 by means of bolts or the like 49. Tubes 50 are also provided, with an inlet end of each tube overlying an aperture 46 in the inlet plate and the tubes extending downstream to the slice assembly with those portions of their length adjacent the slice assembly arranged in parallel juxtaposed relationship.
This means may take the form of a chamber 51 formed by the top and bottom wall portions 42 and 43 of manifold 41 and extension walls 52 closing off the ends of the chamber.
a series of rods 53 are mounted, extending between the top and bottom wall portions 42 and 43 in spaced relationship to each other, to provide openings therebetween.
FIGURE 11 of the drawings another embodiment of the present invention designed to suppress the formation of fiber accumulations is therein shown.
a cleaning chamber 54 is provided defined by end walls 55 and 56, an inlet plate member 57, a top wall portion 58, and a bottom wall portion.
the end walls 55 and 56 extend at an angle to the general direction of flow through the cleaning chamber 54.
the rods 61 stationed across the entrance to the cleaning chamber 54 are vane shaped, in contrast to the rectangularly-shaped rods 53 of FIGURE 8. It will be apparent that with the embodiment of FIGURE 11, any tendency of the fibers to accumulate on the surfaces of the rodlike members 61 themselves, is visualizebly decreased.
the cleaning chamber 54 as in the case of cleaning chamber 51, provides an area of high turbulence therewithin, it will be noted that because of the vane shape of the rod members 61, the general, overall flow direction is at an angle to the upstream surface of the inlet plate member 57. It will thus be apparent, that any fibers that tend to adhere to the land areas between the apertures in the plate member will be continually urged across the surface of the inlet plate member and eventually washed through one of the apertures formed therein.
FIGURES 12-14 of the drawings another embodiment of the present invention is disclosed which is particularly adaptable for use with a rotatable, mechanical cleaning means for the inlet ends of the tubes.
this construction may comprise a manifold 63 having top and bottom walls 64 and 65, respectively, a sidewall 66 and end walls 67 and 68.
a manifold 63 having top and bottom walls 64 and 65, respectively, a sidewall 66 and end walls 67 and 68.
An inlet plate member 102 is also provided having top and bottom extensions 70 and 71 and sidewall extensions 72 and 73.
Both manifold 63 and inlet plate member 102 may be provided with peripheral, co-extensive flange members 74 and 75, respectively, which may be joined by means of bolts, rivets or the like as at 76.
the flow through the inlet plate member is immediately confined in a plurality of small streams by means of the small diameter tubes and maintained in thi confined state until ejection at the slice assembly.
the upstream side of the inlet plate member is provided with an arcuate, rather than planar, surface and means are provided adjacent this surface for continually subjecting the apertures through the inlet plate member to a cleaning action.
inlet plate 102 is provided with a substantially semi-cylindrical rear surface 77 and mounted on the inlet plate member by means of bearing 78 and 79 is a rotatable cleaning device 80.
Member 30 includes spiders 81 and 82 carrying shafts 84 and 85; with each spider spanning a ring member 83. Attached to and extending between the ring members 83 are a plurality of elongated rods 86 which may be arranged in helical fashion as shown.
the shaft member 34 of the cleaning means 89 may be engaged by a suitable source of power and the entire cleaner mechanism rotated in a manner such that the helically extending rods 86 are caused to pass in paths along the curved surface of the inlet plate member.
the shaft member 34 of the cleaning means 89 may be engaged by a suitable source of power and the entire cleaner mechanism rotated in a manner such that the helically extending rods 86 are caused to pass in paths along the curved surface of the inlet plate member.
the shaft member 34 of the cleaning means 89 may be engaged by a suitable source of power and the entire cleaner mechanism rotated in a manner such that the helically extending rods 86 are caused to pass in paths along the curved surface of the inlet plate member.
the shaft member 34 of the cleaning means 89 may be engaged by a suitable source of power and the entire cleaner mechanism rotated in a manner such that the helically extending rods 86 are caused to pass in paths along the curved surface of the inlet plate member.
the manifold 63 is fed through its sidewall 66 by means of a plurality of relatively large diameter conduits 69, it will be apparent that an end flow manifold, as in the previously described embodiments, might also be used to advantage.
the rods 86 are shown as extending in a helical direction between the supporting rings 83, it will be apparent that they may also extend linearly across the inlet plate. It may also be noted that the crosssectional configuration of the rods 86 may be varied. Thus bars of rectangular or other noncircular shapes may be used, as well as foil shapes such as those disclosed in the patent to Martind-ale, 2,835,173.
the jets leave the outlet plate there is some tendency towards intermixing. This results from the slight expansion the jets experience when they are no longer confined by the small diameter tubes and from the slight differences in velocities and pressures in each of the tubes which are likely to occur in practice. For the most part though, the jets are comparatively stable with respect to one another and little intermixing will normally occur. Therefore, if further or more complete intermixing of the jets is desired, the present invention provides means whereby this may be conveniently accomplished.
the tubes interconnecting the manifold and the slice may be of other than circular cross-section. Since any means which serves to disrupt the normal inter-jet stability at the slice and causes the jets to deviate from their parallel flow paths will also serve to promote inter-jet blending, these noncircular tubes may be used to great advantage by twisting them about their longitudinal axis.
tube 99 of substantially square cross-section, is shown with its sidewalls twisted through an angle of 90 from its inlet end to its outlet end 101. In this manner, a spiral velocity component is imparted to each of the jets and inter-jet blending thereby increased. While a square tube twisted through an angle of 90 is shown for purposes of illustration, it will, of course, be apparent that other noncircular shapes and degrees of twist may be used within the cope of the present invention.
non-woven, fibrous web-s it is often desirable in forming non-woven, fibrous web-s to lay the web in a series of layers. In this way a multiply web may be formed having a base layer of cheaper stock with one or both surfaces thereof covered by a finer quality stock for such purposes as, for example, improving printability.
conventional practice is to utilize a series of secondary headboxes suspended over the Web forming surface with each headbox depositing the type of stock desired for a particular ply. Because prior art headboxes generally include a large, liquid-filled vat or chamber, the suspension of these headboxes over the forming surface invariably presents problems of designing a satisfactory support system.
the headbox of the present invention because of its unique construction, requires little or no additional support structure and hence, is ideally suited for use as a secondary headbox.
the present headbox uses a plurality of tubes which are essentially self-supporting and, as a unit, inherently structurally stronger. Additionally, since the tubes need not extend in parallel relationship throughout their lengths, the manifold may be disposed to suit the space requirements of the particular installation. Thus, in addition to its use as a primary headbox, the present headbox is well adapted for use as a secondary unit.
Headbox apparatus of the type described comprising:
a slice assembly including a rear wall and upper and lower slice lips converging away from said rear wall to define a generally triangular space and outlet slot
said tubes terminating at and forming a portion of said rear wall of said slice assembly in direct fluid communication with said triangular space, with said tubes extending upstream from said slice assembly in parallel, juxtaposed relationship for at least a portion of their lengths.
Said manifold is substantially rectangular in crosssection
said manifold is tapered from its inlet to its outlet end.
Said tubes extend from said inlet plate member in a plurality of pairs of rows with each row in a pair of rows staggered with respect to the other, and
each of said pairs of rows of tubes converges intermediate the length of said tubes to form a single row at said slice.
Said tubes are polygonal in cross-sectional configuration.
Means are located intermediate said sidewall portion and said inlet plate member for maintaining said tubes free from obstructions.
Said means comprises a plurality of rod members extending between said top wall portion and said bottom wall portion with each of said rods arranged in spaced relation to each other.
Said rod members are substantially rectangular in cross-section.
Said rod members are substantially vane-shaped in cross-section with the apices of said vanes directed at an angle to said inlet plate member.
Said means comprises a rotating assembly positioned adjacent said inlet plate member.
Said rotating assembly includes a plurality of elon gated members mounted for movement in curved paths in close proximity to one surface of said inlet plate member.
Said one surface of said inlet plate member is substantially semi-cylindrical in shape
Headbox apparatus of the type described comprising:
said manifold including a sidewall and a top and bottom wall extending from the upper and lower edges, respectively, of said sidewall,
said inlet plate member having portions thereof defining apertures therethrough with said apertures arranged in a plurality of pairs of spaced horizontally extending rows
said outlet plate member having portions defining a plurality of apertures therethrough
Said tubes are polygonal in cross-section, and
Headbox apparatus of the type described comprising:
said manifold having a top wall port-ion, a bottom wall portion and a sidewall portion joining said top and bottom wall portions
said inlet plate member having a front surface, a
said inlet plate member extending between said top and bottom wall portions of said manifold in spaced relation to said sidewall portion and having a plurality of apertures formed therein,
said cleaning assembly including a pair of ring members
a slice assembly including a rear wall and upper and lower slice lips converging away from said rear Wall to define a generally triangular space and outlet slot
said tubes terminating at and forming a portion of said rear wall of said slice assembly in direct fluid communication with said triangular space with said tubes extending upstream from said slice assembly in parallel juxtaposed relation to each other for at least a portion of their lengths.
Headbox apparatus of the type described comprising:
a slice assembly extending transversely of said form. ing member in spaced relationship thereto including a rear wall and upper and lower slice lips converging away from said rear wall to define a generally triangular space and outlet slot,
each of said tubes terminating at and forming a portion of said rear wall of said slice assembly in direct fluid communication with said triangular space at their end opposite said one end,

Landscapes

Paper (AREA)

US376699A 1964-06-22 1964-06-22 Bunched tube approach to a headbox of a papermaking machine Expired - Lifetime US3328236A (en)

Priority Applications (5)

Application Number	Priority Date	Filing Date	Title
US376699A US3328236A (en)	1964-06-22	1964-06-22	Bunched tube approach to a headbox of a papermaking machine
DE1965B0082484 DE1461072B2 (de)	1964-06-22	1965-06-21	Stoffauflaufvorrichtung fuer papiermaschinen
SE08222/65A SE332561B (de)	1964-06-22	1965-06-22
FI651495A FI50352C (fi)	1964-06-22	1965-06-22	Putkikimppuperälaatikko.
GB26448/65A GB1119561A (en)	1964-06-22	1965-06-22	Improvements in or relating to apparatus for delivering a dilute fibre suspension to the forming member of a non-woven fibrous web-forming device

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US376699A US3328236A (en)	1964-06-22	1964-06-22	Bunched tube approach to a headbox of a papermaking machine

Publications (1)

Publication Number	Publication Date
US3328236A true US3328236A (en)	1967-06-27

Family

ID=23486090

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US376699A Expired - Lifetime US3328236A (en)	1964-06-22	1964-06-22	Bunched tube approach to a headbox of a papermaking machine

Country Status (5)

Country	Link
US (1)	US3328236A (de)
DE (1)	DE1461072B2 (de)
FI (1)	FI50352C (de)
GB (1)	GB1119561A (de)
SE (1)	SE332561B (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3622450A (en) *	1968-07-04	1971-11-23	St Annes Board Mill Co Ltd	Papermaking flow box
US3628589A (en) *	1968-01-31	1971-12-21	Time Inc	Flow systems
US3652392A (en) *	1969-11-24	1972-03-28	Kimberly Clark Co	Contracting pre-slice flow distributor for papermaking machine headbox
US3769155A (en) *	1970-02-18	1973-10-30	Voith Gmbh J M	Stock inlet system for a paper making machine including converging settling ducts
US3960654A (en) *	1974-08-19	1976-06-01	Westvaco Corporation	Shear pump headbox
US3963562A (en) *	1974-01-14	1976-06-15	Lodding Engineering Corporation	Slurry distributor
US4104116A (en) *	1976-08-20	1978-08-01	Valmet Oy	Headbox flow controls
US4141789A (en) *	1977-11-22	1979-02-27	Beloit Corporation	Headbox having pivoted bridging cover
US4387003A (en) *	1980-07-25	1983-06-07	J. M. Voith Gmbh	Headbox for papermaking machine
US4505777A (en) *	1980-10-29	1985-03-19	Messerschmitt-Boelkow-Blohm Gmbh	Method for producing oriented fleeces or mats of short length fibers
EP0166669A1 (de) *	1984-06-27	1986-01-02	James River Corporation of Nevada	Diffusionssystem für Papierbrei
US4812208A (en) *	1985-07-30	1989-03-14	Seishi Gijutsu Kenkyu Kumiai	Headbox for paper machine with parallel twisted plates
US5417810A (en) *	1994-03-04	1995-05-23	International Paper Comany	Papermachine headbox cleaning system
EP0826818A2 (de) *	1996-08-30	1998-03-04	Voith Sulzer Papiermaschinen GmbH	Verfahren und Vorrichtung zum Einstellen des Stoffdichte- und Faserorientierungsprofils in einem Stoffauflauf
US5766420A (en) *	1994-05-02	1998-06-16	Smurfut Carton Y Papel De Mexico	Under felt inclined flat former to produce multilayer or monolayer sheet of paper
US5820735A (en) *	1994-05-02	1998-10-13	Smurfit Carton Y Papel De Mexico	Under felt inclined flat former to produce multilayer or monolayer sheet of paper
US6264796B1 (en)	1999-07-13	2001-07-24	The Mead Corporation	Headbox diffuser
CN103814172A (zh) *	2011-09-21	2014-05-21	沃依特专利有限责任公司	用于制造纤维幅面的机器的流浆箱

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102018120162A1 (de) *	2018-08-20	2019-10-10	Voith Patent Gmbh	Stoffauflauf

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2737083A (en) *	1954-03-16	1956-03-06	Robert W Dowling	Picture-projection system for projecting moving pictures
US2894581A (en) *	1957-03-26	1959-07-14	Rice Barton Corp	Fluid stock distributor
US3051233A (en) *	1958-05-01	1962-08-28	Black Clawson Co	Paper machinery
US3216892A (en) *	1962-04-12	1965-11-09	Karlstad Mekaniska Ab	Headbox for paper machine
US3255074A (en) *	1964-04-03	1966-06-07	Beloit Corp	Headbox for paper-making machine

1964
- 1964-06-22 US US376699A patent/US3328236A/en not_active Expired - Lifetime
1965
- 1965-06-21 DE DE1965B0082484 patent/DE1461072B2/de not_active Withdrawn
- 1965-06-22 FI FI651495A patent/FI50352C/fi active
- 1965-06-22 SE SE08222/65A patent/SE332561B/xx unknown
- 1965-06-22 GB GB26448/65A patent/GB1119561A/en not_active Expired

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2737083A (en) *	1954-03-16	1956-03-06	Robert W Dowling	Picture-projection system for projecting moving pictures
US2894581A (en) *	1957-03-26	1959-07-14	Rice Barton Corp	Fluid stock distributor
US3051233A (en) *	1958-05-01	1962-08-28	Black Clawson Co	Paper machinery
US3216892A (en) *	1962-04-12	1965-11-09	Karlstad Mekaniska Ab	Headbox for paper machine
US3255074A (en) *	1964-04-03	1966-06-07	Beloit Corp	Headbox for paper-making machine

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3628589A (en) *	1968-01-31	1971-12-21	Time Inc	Flow systems
US3622450A (en) *	1968-07-04	1971-11-23	St Annes Board Mill Co Ltd	Papermaking flow box
US3652392A (en) *	1969-11-24	1972-03-28	Kimberly Clark Co	Contracting pre-slice flow distributor for papermaking machine headbox
US3769155A (en) *	1970-02-18	1973-10-30	Voith Gmbh J M	Stock inlet system for a paper making machine including converging settling ducts
US3963562A (en) *	1974-01-14	1976-06-15	Lodding Engineering Corporation	Slurry distributor
US3960654A (en) *	1974-08-19	1976-06-01	Westvaco Corporation	Shear pump headbox
US4104116A (en) *	1976-08-20	1978-08-01	Valmet Oy	Headbox flow controls
US4141789A (en) *	1977-11-22	1979-02-27	Beloit Corporation	Headbox having pivoted bridging cover
US4387003A (en) *	1980-07-25	1983-06-07	J. M. Voith Gmbh	Headbox for papermaking machine
US4505777A (en) *	1980-10-29	1985-03-19	Messerschmitt-Boelkow-Blohm Gmbh	Method for producing oriented fleeces or mats of short length fibers
EP0166669A1 (de) *	1984-06-27	1986-01-02	James River Corporation of Nevada	Diffusionssystem für Papierbrei
US4812208A (en) *	1985-07-30	1989-03-14	Seishi Gijutsu Kenkyu Kumiai	Headbox for paper machine with parallel twisted plates
US5417810A (en) *	1994-03-04	1995-05-23	International Paper Comany	Papermachine headbox cleaning system
US5766420A (en) *	1994-05-02	1998-06-16	Smurfut Carton Y Papel De Mexico	Under felt inclined flat former to produce multilayer or monolayer sheet of paper
US5820735A (en) *	1994-05-02	1998-10-13	Smurfit Carton Y Papel De Mexico	Under felt inclined flat former to produce multilayer or monolayer sheet of paper
EP0826818A2 (de) *	1996-08-30	1998-03-04	Voith Sulzer Papiermaschinen GmbH	Verfahren und Vorrichtung zum Einstellen des Stoffdichte- und Faserorientierungsprofils in einem Stoffauflauf
EP0826818A3 (de) *	1996-08-30	1998-04-01	Voith Sulzer Papiermaschinen GmbH	Verfahren und Vorrichtung zum Einstellen des Stoffdichte- und Faserorientierungsprofils in einem Stoffauflauf
US6136152A (en) *	1996-08-30	2000-10-24	Voith Sulzer Papiermaschinen Gmbh	Process and device for controlling the consistency and fiber orientation profile in a headbox
US6264796B1 (en)	1999-07-13	2001-07-24	The Mead Corporation	Headbox diffuser
CN103814172A (zh) *	2011-09-21	2014-05-21	沃依特专利有限责任公司	用于制造纤维幅面的机器的流浆箱

Also Published As

Publication number	Publication date
DE1461072A1 (de)	1970-05-21
GB1119561A (en)	1968-07-10
SE332561B (de)	1971-02-08
FI50352B (de)	1975-10-31
FI50352C (fi)	1976-02-10
DE1461072B2 (de)	1977-01-27

Legal Events

Date

Code

Title

Description

1984-04-09

AS

Assignment

Owner name: WALTER E. HELLER & COMPANY, INC., 101 PARK AVE., N

Free format text: SECURITY INTEREST;ASSIGNOR:BLACK CLAWSON COMPANY, THE;REEL/FRAME:004250/0792

Effective date: 19840130

1986-11-03

AS