US3705676A - Air foil conveyor - Google Patents

Air foil conveyor Download PDF

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US3705676A
US3705676A US19687A US3705676DA US3705676A US 3705676 A US3705676 A US 3705676A US 19687 A US19687 A US 19687A US 3705676D A US3705676D A US 3705676DA US 3705676 A US3705676 A US 3705676A
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Prior art keywords
conveyor
air
nozzle
unit
air foil
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US19687A
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William F Overly
Kenneth J Pagel
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Overly Inc
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Overly Inc
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
    • B65G51/02—Directly conveying the articles, e.g. slips, sheets, stockings, containers or workpieces, by flowing gases
    • B65G51/03—Directly conveying the articles, e.g. slips, sheets, stockings, containers or workpieces, by flowing gases over a flat surface or in troughs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/14—Advancing webs by direct action on web of moving fluid

Definitions

  • the invention relates to an air foil conveyor which finds its principle use in the conveyance of materials as by air without other physical engagement therewith.
  • the invention has been proposed particularly for use in the paper making industry, to convey paper trim from a rewinder to a broke pulper, and also to convey the initial narrow ribbon of paper between rolls during threading of a paper machine.
  • Trim material is hardly more than a wet conglomerate mass of pulp having practically no strength and quite susceptible to clogging most types of conveyors.
  • the present invention provides a conveyor unit which can be positioned as desired in multiples to provide air jets disposed in tandem adjacent the material to be conveyed and effecting an air borne conveyance of the material in the direction desired without manual contact and without endangering the machine operator.
  • the air foil conveyor of the present invention is made up of one or more conveyor units providing the total length of conveyor needed and having a width corresponding generally somewhat in excess of the width of the material to be conveyed.
  • Each unit comprises a plenum chamber having a series of longitudinally spaced parallel air foil nozzles in one surface thereof.
  • the unit may be generally planular, or it may be curved in its length, depending upon the desired path of conveyance.
  • An air supply duct is connected to the back or side of the plenum chamber and feeds air thereto from a suitable fan at a rate sufficient to make the air foil discharge nozzles operative.
  • Each air foil nozzle is of the type referred to in the foregoing application Ser. No. 817,834 filed by the present applicants on Apr. 21, 1969.
  • each air foil nozzle consists of an outwardly curved surface extending transversely across the face of the plenum chamber and which at its outermost extremity merges into a generally flat surface extending to the next air foil nozzle in the direction of conveyance of the material, and an angularly disposed foil plate generally tangential to the curved foil surface but spaced therefrom just sufficiently to provide the desired nozzle opening therebetween.
  • the foil plate for the first nozzle is preferably formed from the end of the plenum chamber.
  • the foil plate for each successive nozzle is preferably integrally formed as one terminal edge of the flat surface of the preceding nozzle.
  • the terminal edge of the flat surface for the last nozzle preferably merges with the corresponding end of the plenum chamber.
  • FIG. 1 is a longitudinal central section of a conveyor unit having four nozzles
  • FIG. 2 is a top plan view of the unit of FIG. 1;
  • FIG. 3 is a schematic top plan view showing use of a plurality of nozzle units for conveying trim
  • FIG. 4 is a schematic side elevation showing use of a plurality of nozzle units for threading a roll in a paper machine
  • FIG. 5 is a detail section schematically showing the arrangement of a plurality of units in a curved conveyor path in which a portion of the path may be substantially vertical.
  • FIGS. 1 and 2 illustrate a conveyor unit I of convenient size having four air foil nozzles 2 disposed in tandem along the length of one face of a plenum chamber 3.
  • Each nozzle 2 is formed by foil surface 4 extending transversely across the chamber 3 to provide a portionof the face thereof, and which surface has one edge portion 5 curved on a suitable radius for approximately with its outermost portion merging with a generally flat portion 6 extending forwardly to the next nozzle.
  • portion 5 of foil surface 4 Cooperating with portion 5 of foil surface 4 is a foil plate 7 disposed generally tangential of portion 5 but spaced therefrom to provide a narrow slit 8 constituting the nozzle discharge opening for air from the plenum chamber 3.
  • the foil plate 7 extends across the face of the plenum chamber.
  • the plate 7 at the end of the plenum chamber is preferably integral with the end wall 9 of the chamber.
  • the plates 7 for the successive nozzles are preferably formed integral with the terminal edges of the generally flat portions 6 of the preceding foil surfaces 4.
  • the terminal edge of portion 6 of the last foil surface 4 preferably is integral with the end 10 of the plenum chamber 3.
  • the plenum chamber 3 is generally rectangular in cross section and is supplied with air through a duct 11 opening into the chamber on the back side 12.
  • FIG. 3 of the drawing there is schematically shown a paper slitter 13 followed by a rewind roll 14.
  • the web 15 of wet paper is passing through the slitter 12 to the rewind roll 14 and as it goes through the slitter a waste portion or trim 16 is slit from the web before the latter enters the rewind roll.
  • the trim 16 is often wet pulpy material which has to be delivered back into the pulper for re-use. It is considered one of the most difficult materials to convey since it tends to clog conveyors heretofore attempted. The problem can be appreciated when it is pointed out that the web 15 is often moving at several thousand feet per minute.
  • conveyor units 1 of the present invention are disposed end to end to carry the trim air borne from the slitter 13 back to the pulper, not shown, which may be at some distance from the rewinder.
  • FIG. 4 which shows a typical portion of a threading operation utilizing the present invention in a paper machine
  • the ribbon 17 of paper is being floated from a pair of rolls 18 horizontally to a succeeding pair of rolls l9vby means of several units 1 of the present conveyor and which may guide the ribbon over intermediate rolls 20 and 21 with a vertical course intermediate the latter rolls.
  • the conveying of either the trim or the threading ribbon is shown in a curved path from a horizontal to a vertical.
  • the units 22 are constructed the same as units 1 except that they are curved from end to end to provide the desired change in the conveyor path or direction. If greater force is needed on the material for lifting purposes it is possible to provide conveyor units 22 on both sides of the material as shown and to at least partially block off the escape of air at the side edges by extending the sides of plenum chamber 3 to form baffle plates 23 arranged to confine the flow of air more fully to the direction of material movement.
  • the flow speed of air may be as desired to effect the necessary conveyance of the material and the volume of air needed depends upon the spacing of the faces of the units from the material. In general it will be desirable to space the units one or more inches from the unit and the material being conveyed, each said slot discharging air generally tangential to a curved surface of said nozzle which merges with a flat surface disposed in a plane parallel to the general plane of travel of the material and extending continuously from one nozzle slot to the next for controlling the flow of air along the surface of the material from air foil nozzle to air foil nozzle of said unit.
  • the conveyor of claim 1 employing a plurality of said conveyor units disposed end to end.
  • the conveyor of claim 1 employing a plurality of said conveyor units facing each other and disposed generally parallel with the material being conveyed therebetween.

Abstract

A common plenum supplies air to a plurality of parallel air foil nozzles disposed in tandem and operative upon a sheet of material adjacent to the nozzle to convey the sheet relative thereto.

Description

United States Patent Overly, William F. et a1.
1451 Dec. 12, 1972 [54] AIR FOIL CONVEYOR [72] Inventors: William F. Overly, Winneconne; Kenneth J. Pagel, Neenah, both of Wis.
Assignee: Overly, Inc., Neenah, Wis.
Filed: March 16, 1970 Appl. No.: 19,687
US. Cl ..226/97 Int. Cl. ..B65h 17/32 Field of Search ..226/7, 97, 91; 34/156, 160,
[56] References Cited UNITED STATES PATENTS 1,605,067 11/1926 Read ..34/120x Gautreau ..34/156 X Allander ..34/156 Allander ..226/91 X Allander ..226/97 Petersson ..226/97 Fraser ..34/156 Primary Examiner-Richard A. Schacher Attorney-Andrus, Sceales, Starke & Sawall ABSTRACT A common plenum supplies air to a plurality of parallel air foil nozzles disposed in tandem and operative upon a sheet of material adjacent to the nozzle to convey the sheet relative thereto.
5 Claims, 5 Drawing Figures PATENTEDuEc 12 1912 3 705,676
sum 2 0F 2 INVENTORS WM. F OVERLY KENNETH J. PAGEL A/ Z ZW/ZM Attorneys AIR FOIL CONVEYOR EARLIER APPLICATION Reference is made to application Ser. No. 817,834 filed Apr. 21, 1969, and now U.S. Pat. No. 3,587,177 and which shows an air foil nozzle of the type employed by applicants.
BACKGROUND OF INVENTION The invention relates to an air foil conveyor which finds its principle use in the conveyance of materials as by air without other physical engagement therewith.
The invention has been proposed particularly for use in the paper making industry, to convey paper trim from a rewinder to a broke pulper, and also to convey the initial narrow ribbon of paper between rolls during threading of a paper machine.
Heretofore, the paper industry has lacked any satisfactory means of conveying paper trim to a pulper, and of conveying a narrow ribbon of raw paper in threading a paper machine. Previous means have always involved touching the material physically often resulting in breaks or plugging.
Trim material is hardly more than a wet conglomerate mass of pulp having practically no strength and quite susceptible to clogging most types of conveyors.
Likewise the threading ribbon of paper in a paper machine is often very delicate and since its speed toward the end is usually up to 5,000 feet per-minute, the directing of it into each successive roll from the preceding one becomes a feat of substantial dexterity.
The present invention provides a conveyor unit which can be positioned as desired in multiples to provide air jets disposed in tandem adjacent the material to be conveyed and effecting an air borne conveyance of the material in the direction desired without manual contact and without endangering the machine operator.
SUMMARY OF INVENTION The air foil conveyor of the present invention is made up of one or more conveyor units providing the total length of conveyor needed and having a width corresponding generally somewhat in excess of the width of the material to be conveyed.
It is convenient to make the conveyor in units of a standard length, and if the conveyor needs greater length additional units may be placed end to end.
Each unit comprises a plenum chamber having a series of longitudinally spaced parallel air foil nozzles in one surface thereof. The unit may be generally planular, or it may be curved in its length, depending upon the desired path of conveyance.
An air supply duct is connected to the back or side of the plenum chamber and feeds air thereto from a suitable fan at a rate sufficient to make the air foil discharge nozzles operative.
Each air foil nozzle is of the type referred to in the foregoing application Ser. No. 817,834 filed by the present applicants on Apr. 21, 1969.
More specifically each air foil nozzle consists of an outwardly curved surface extending transversely across the face of the plenum chamber and which at its outermost extremity merges into a generally flat surface extending to the next air foil nozzle in the direction of conveyance of the material, and an angularly disposed foil plate generally tangential to the curved foil surface but spaced therefrom just sufficiently to provide the desired nozzle opening therebetween.
The foil plate for the first nozzle is preferably formed from the end of the plenum chamber.
The foil plate for each successive nozzle is preferably integrally formed as one terminal edge of the flat surface of the preceding nozzle.
The terminal edge of the flat surface for the last nozzle preferably merges with the corresponding end of the plenum chamber.
BRIEF DESCRIPTION OF DRAWINGS The invention is illustrated drawings in which:
FIG. 1 is a longitudinal central section of a conveyor unit having four nozzles;
FIG. 2 is a top plan view of the unit of FIG. 1;
FIG. 3 is a schematic top plan view showing use of a plurality of nozzle units for conveying trim; 7 FIG. 4 is a schematic side elevation showing use of a plurality of nozzle units for threading a roll in a paper machine; and
FIG. 5 is a detail section schematically showing the arrangement of a plurality of units in a curved conveyor path in which a portion of the path may be substantially vertical.
in the accompanying DESCRIPTION OF THE EMBODIMENTS Referring to the drawings, FIGS. 1 and 2 illustrate a conveyor unit I of convenient size having four air foil nozzles 2 disposed in tandem along the length of one face of a plenum chamber 3.
Each nozzle 2 is formed by foil surface 4 extending transversely across the chamber 3 to provide a portionof the face thereof, and which surface has one edge portion 5 curved on a suitable radius for approximately with its outermost portion merging with a generally flat portion 6 extending forwardly to the next nozzle.
Cooperating with portion 5 of foil surface 4 is a foil plate 7 disposed generally tangential of portion 5 but spaced therefrom to provide a narrow slit 8 constituting the nozzle discharge opening for air from the plenum chamber 3.
The foil plate 7 extends across the face of the plenum chamber. The plate 7 at the end of the plenum chamber is preferably integral with the end wall 9 of the chamber. The plates 7 for the successive nozzles are preferably formed integral with the terminal edges of the generally flat portions 6 of the preceding foil surfaces 4.
The terminal edge of portion 6 of the last foil surface 4 preferably is integral with the end 10 of the plenum chamber 3.
The plenum chamber 3 is generally rectangular in cross section and is supplied with air through a duct 11 opening into the chamber on the back side 12.
Referring to FIG. 3 of the drawing, there is schematically shown a paper slitter 13 followed by a rewind roll 14.
The web 15 of wet paper is passing through the slitter 12 to the rewind roll 14 and as it goes through the slitter a waste portion or trim 16 is slit from the web before the latter enters the rewind roll.
The trim 16 is often wet pulpy material which has to be delivered back into the pulper for re-use. It is considered one of the most difficult materials to convey since it tends to clog conveyors heretofore attempted. The problem can be appreciated when it is pointed out that the web 15 is often moving at several thousand feet per minute.
In the illustration several conveyor units 1 of the present invention are disposed end to end to carry the trim air borne from the slitter 13 back to the pulper, not shown, which may be at some distance from the rewinder.
.Referring to FIG. 4, which shows a typical portion of a threading operation utilizing the present invention in a paper machine, the ribbon 17 of paper is being floated from a pair of rolls 18 horizontally to a succeeding pair of rolls l9vby means of several units 1 of the present conveyor and which may guide the ribbon over intermediate rolls 20 and 21 with a vertical course intermediate the latter rolls.
Referring to FIG. 5, the conveying of either the trim or the threading ribbon is shown in a curved path from a horizontal to a vertical. In this embodiment of the invention the units 22 are constructed the same as units 1 except that they are curved from end to end to provide the desired change in the conveyor path or direction. If greater force is needed on the material for lifting purposes it is possible to provide conveyor units 22 on both sides of the material as shown and to at least partially block off the escape of air at the side edges by extending the sides of plenum chamber 3 to form baffle plates 23 arranged to confine the flow of air more fully to the direction of material movement.
The flow speed of air may be as desired to effect the necessary conveyance of the material and the volume of air needed depends upon the spacing of the faces of the units from the material. In general it will be desirable to space the units one or more inches from the unit and the material being conveyed, each said slot discharging air generally tangential to a curved surface of said nozzle which merges with a flat surface disposed in a plane parallel to the general plane of travel of the material and extending continuously from one nozzle slot to the next for controlling the flow of air along the surface of the material from air foil nozzle to air foil nozzle of said unit.
2. The conveyor of claim 1 employing a plurality of said conveyor units disposed end to end.
3. The conveyor of claim 1 employing a plurality of said conveyor units facing each other and disposed generally parallel with the material being conveyed therebetween.
4. The construction of claim 3 in which the conveyor units are curved longitudinally to provide a curvalinear path for the material.
5. The conveyor of claim 1 in which the plenum unit is curved longitudinally to effect a change in direction for the conveyor.

Claims (5)

1. An air foil conveyor for sheet or web-like material generally required to be air borne, comprising a plenum unit of a width corresponding to the width of the material to be conveyed and of a substantially greater length and having a plurality of air foil nozzles providing discharge orifices in the form of generally parallel slots extending across the unit for substantially the full width thereof and spaced in tandem in the face thereof to direct a high velocity air stream longitudinally thereof in the region between the face of the unit and the material being conveyed, each said slot discharging air generally tangential to a curved surface of said nozzle which merges with a flat surface disposed in a plane parallel to the general plane of travel of the material and extending continuously from one nozzle slot to the next for controlling the flow of air along the surface of the material from air foil nozzle to air foil nozzle of said unit.
2. The conveyor of claim 1 employing a plurality of said conveyor units disposed end to end.
3. The conveyor of claim 1 employing a plurality of said conveyor units facing each other and disposed generally parallel with the material being conveyed therebetween.
4. The construction of claim 3 in which the conveyor units are curved longitudinally to provide a curvalinear path for the material.
5. The conveyor of claim 1 in which the plenum unit is curved longitudinally to effect a change in direction for the conveyor.
US19687A 1970-03-16 1970-03-16 Air foil conveyor Expired - Lifetime US3705676A (en)

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Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976237A (en) * 1973-03-09 1976-08-24 Masson Scott Thrissell Engineering Limited Web guide systems
FR2312441A1 (en) * 1975-05-27 1976-12-24 Crown Zellerbach Corp CONTINUOUS SHEET THREADING SYSTEM
US3999696A (en) * 1975-05-27 1976-12-28 Crown Zellerbach Corporation Web threading system
US4014487A (en) * 1976-03-31 1977-03-29 Crown Zellerbach Corporation Web threading system
DE2827495A1 (en) * 1977-06-22 1979-01-11 Du Pont RAIL CONVEYOR DEVICE
US4136808A (en) * 1977-11-21 1979-01-30 Crown Zellerbach Corporation Web threading system
US4170347A (en) * 1977-06-22 1979-10-09 E. I. Du Pont De Nemours And Company Web pleater
US4186860A (en) * 1978-10-16 1980-02-05 Crown Zellerbach Corporation Web threading system
US4229861A (en) * 1978-08-10 1980-10-28 E. I. Du Pont De Nemours And Company Material converger
US4858809A (en) * 1986-02-15 1989-08-22 Bayer Aktiengesellschaft Conveying of filament bundles over long conveying sections
DE3933861A1 (en) * 1989-10-11 1991-04-18 Jagenberg Ag METHOD AND DEVICE FOR INSERTING A MATERIAL RAIL IN A PROCESSING MACHINE
US5209387A (en) * 1990-09-20 1993-05-11 Eastman Kodak Company Gas film conveyor for elongated strips of web material
US5370289A (en) * 1992-02-21 1994-12-06 Advance Systems, Inc. Airfoil floater apparatus for a running web
FR2709479A1 (en) * 1993-09-02 1995-03-10 Molins Plc Device for feeding strip material, especially paper, for a machine for making cigarettes.
WO1995014814A1 (en) * 1993-11-22 1995-06-01 Beloit Technologies, Inc. Threading vacuum sheave for a tissue calender
US5499673A (en) * 1992-06-08 1996-03-19 Kawasaki Steel Corporation Method of and apparatus for conveying and guiding thin metal strip formed by quenching
US5590480A (en) * 1994-12-06 1997-01-07 W. R. Grace & Co.-Conn. combination air bar and hole bar flotation dryer
WO1999025920A1 (en) * 1997-11-14 1999-05-27 Valmet Corporation Threading device and method for threading the tail of the web
US5970627A (en) * 1997-12-11 1999-10-26 Thermo Wisconsin, Inc. Active web stabilization apparatus
US6003750A (en) * 1996-07-20 1999-12-21 Voith Sulzer Finishing Gmbh Process for guiding a web
WO2000004226A1 (en) * 1998-07-16 2000-01-27 Voith Sulzer Papiertechnik Patent Gmbh Transfer device
EP1002898A2 (en) * 1998-11-18 2000-05-24 PAPRIMA Industries Inc. Directional tail transfer threading apparatus
WO2000034577A1 (en) * 1998-12-09 2000-06-15 Voith Paper Patent Gmbh Transfer means
EP1013573A1 (en) * 1998-12-21 2000-06-28 Free-Flow Packaging International, Inc. Air-filled packing cushion delivery system
WO2001083861A1 (en) * 2000-04-28 2001-11-08 Eastman Chemical Company Method and device for conveying planar ribbon of crimped fiber using air jets
US6519916B1 (en) 1998-12-21 2003-02-18 Free-Flow Packaging International, Inc. System and method for conveying air-filled packing cushions
US6543662B1 (en) * 1998-06-17 2003-04-08 E. I. Du Pont De Nemours And Company Web transport system
US20050223593A1 (en) * 2004-04-13 2005-10-13 Rocheleau Michael O Step air foil
USRE39601E1 (en) 1995-09-13 2007-05-01 Metso Paper Karlstad Ab Method of and a device for transferring running dried web from one device to a subsequent device
US20110131829A1 (en) * 2009-06-05 2011-06-09 Megtec Systems, Inc. Infrared Float Bar
US8061055B2 (en) 2007-05-07 2011-11-22 Megtec Systems, Inc. Step air foil web stabilizer
WO2011151514A1 (en) * 2010-06-02 2011-12-08 Metso Paper, Inc. Guiding device for conveying a web threading tail in a fiber web machine and a fiber web machine
US20140177166A1 (en) * 2012-12-21 2014-06-26 Patrick Nardi Methods of forming serpentine thermal interface material and structures formed thereby
US10086526B2 (en) * 2016-10-04 2018-10-02 Geo. M. Martin Company Puffer pan
CN109368343A (en) * 2018-11-15 2019-02-22 江苏信诺轨道科技股份有限公司 A kind of bleed type paper guiding device
US11535474B2 (en) 2017-03-31 2022-12-27 Runtech Systems Oy Method for transporting a tail end in a fiber web machine from one structural section to another, and also an apparatus and the use of it

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US2144919A (en) * 1937-06-24 1939-01-24 Andrews And Goodrich Inc Apparatus for and method of drying web material
US3070901A (en) * 1956-02-01 1963-01-01 Svenska Flaektfabriken Ab Guiding air-borne webs
US3085346A (en) * 1958-12-04 1963-04-16 Svenska Flaektfabriken Ab Threading web material
US3127080A (en) * 1964-03-31 Web turning device
US3232507A (en) * 1962-07-03 1966-02-01 Svenska Flaektfabriken Ab Arrangement in devices for supporting and conveying airborne materials
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US1605067A (en) * 1926-11-02 Paper-making machine
US3127080A (en) * 1964-03-31 Web turning device
US2144919A (en) * 1937-06-24 1939-01-24 Andrews And Goodrich Inc Apparatus for and method of drying web material
US3070901A (en) * 1956-02-01 1963-01-01 Svenska Flaektfabriken Ab Guiding air-borne webs
US3085346A (en) * 1958-12-04 1963-04-16 Svenska Flaektfabriken Ab Threading web material
US3232507A (en) * 1962-07-03 1966-02-01 Svenska Flaektfabriken Ab Arrangement in devices for supporting and conveying airborne materials
US3559301A (en) * 1968-07-29 1971-02-02 Egan Machinery Co Air flotation system for conveying web materials

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976237A (en) * 1973-03-09 1976-08-24 Masson Scott Thrissell Engineering Limited Web guide systems
FR2312441A1 (en) * 1975-05-27 1976-12-24 Crown Zellerbach Corp CONTINUOUS SHEET THREADING SYSTEM
US3999696A (en) * 1975-05-27 1976-12-28 Crown Zellerbach Corporation Web threading system
US4014487A (en) * 1976-03-31 1977-03-29 Crown Zellerbach Corporation Web threading system
US4170347A (en) * 1977-06-22 1979-10-09 E. I. Du Pont De Nemours And Company Web pleater
DE2827495A1 (en) * 1977-06-22 1979-01-11 Du Pont RAIL CONVEYOR DEVICE
DE2858713A1 (en) * 1977-06-22 1987-07-09
US4136808A (en) * 1977-11-21 1979-01-30 Crown Zellerbach Corporation Web threading system
DE2842295A1 (en) * 1977-11-21 1979-05-23 Crown Zellerbach Corp DEVICE FOR DEFLECTING THE ATTACHMENT OF A TRAIL MADE OF FLEXIBLE MATERIAL
FR2409220A1 (en) * 1977-11-21 1979-06-15 Crown Zellerbach Corp DEVICE FOR THREADING A CONTINUOUS SHEET
US4229861A (en) * 1978-08-10 1980-10-28 E. I. Du Pont De Nemours And Company Material converger
US4186860A (en) * 1978-10-16 1980-02-05 Crown Zellerbach Corporation Web threading system
FR2439152A1 (en) * 1978-10-16 1980-05-16 Crown Zellerbach Corp APPARATUS FOR THREADING A STRIP OF FLEXIBLE MATERIAL
US4858809A (en) * 1986-02-15 1989-08-22 Bayer Aktiengesellschaft Conveying of filament bundles over long conveying sections
DE3933861A1 (en) * 1989-10-11 1991-04-18 Jagenberg Ag METHOD AND DEVICE FOR INSERTING A MATERIAL RAIL IN A PROCESSING MACHINE
WO1991005725A1 (en) * 1989-10-11 1991-05-02 Jagenberg Aktiengesellschaft Process and device for inserting a web of material into a processing machine
US5209387A (en) * 1990-09-20 1993-05-11 Eastman Kodak Company Gas film conveyor for elongated strips of web material
US5370289A (en) * 1992-02-21 1994-12-06 Advance Systems, Inc. Airfoil floater apparatus for a running web
US5499673A (en) * 1992-06-08 1996-03-19 Kawasaki Steel Corporation Method of and apparatus for conveying and guiding thin metal strip formed by quenching
FR2709479A1 (en) * 1993-09-02 1995-03-10 Molins Plc Device for feeding strip material, especially paper, for a machine for making cigarettes.
US5564441A (en) * 1993-09-02 1996-10-15 Molins Plc Pneumatic web feeding
WO1995014814A1 (en) * 1993-11-22 1995-06-01 Beloit Technologies, Inc. Threading vacuum sheave for a tissue calender
US5456802A (en) * 1993-11-22 1995-10-10 Beloit Technologies, Inc. Threading vacuum sheave for a tissue calender
US5590480A (en) * 1994-12-06 1997-01-07 W. R. Grace & Co.-Conn. combination air bar and hole bar flotation dryer
US5647144A (en) * 1994-12-06 1997-07-15 W.R. Grace & Co.-Conn. Combination air bar and hole bar flotation dryer
USRE39601E1 (en) 1995-09-13 2007-05-01 Metso Paper Karlstad Ab Method of and a device for transferring running dried web from one device to a subsequent device
US6003750A (en) * 1996-07-20 1999-12-21 Voith Sulzer Finishing Gmbh Process for guiding a web
WO1999025920A1 (en) * 1997-11-14 1999-05-27 Valmet Corporation Threading device and method for threading the tail of the web
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