EP0106068B1 - Apparatus for shearing fabrics - Google Patents

Apparatus for shearing fabrics Download PDF

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Publication number
EP0106068B1
EP0106068B1 EP83108232A EP83108232A EP0106068B1 EP 0106068 B1 EP0106068 B1 EP 0106068B1 EP 83108232 A EP83108232 A EP 83108232A EP 83108232 A EP83108232 A EP 83108232A EP 0106068 B1 EP0106068 B1 EP 0106068B1
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EP
European Patent Office
Prior art keywords
shear
cylinder
shearing
fan
shear cylinder
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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
EP83108232A
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German (de)
French (fr)
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EP0106068A1 (en
Inventor
Alfonsius Adrianus Johannes Van Dijk
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.)
Menschner Johannes Maschinenfabrik
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Menschner Johannes Maschinenfabrik
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Publication of EP0106068A1 publication Critical patent/EP0106068A1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C13/00—Shearing, clipping or cropping surfaces of textile fabrics; Pile cutting; Trimming seamed edges

Definitions

  • the invention relates to a device for shearing fabric webs with a shear cylinder provided with shear spirals arranged above a fabric web support and designed as a hollow cylinder, the interior of which is connected to a suction device generating this vacuum and the jacket of which is provided with air passage openings.
  • Such a device is known for example from DE-A No. 1635304.
  • the air layer surrounding the shear cylinder is sucked in through the air passage openings arranged in its jacket and transported away through the interior of the shear cylinder.
  • the purpose of suction is to straighten the fibers of the web (pile or threads) at the shear point and to cut off sheared threads.
  • the interior of the shear cylinder is connected to a vacuum suction source via pipes.
  • the aim of the present invention is to reduce the expenditure on equipment of such a device.
  • the suction device consists of at least one fan, the rotor of which is connected to the latter in a rotationally fixed manner in or at the end region of the shear cylinder.
  • a fan can be provided only in or on one end region of the shear cylinder, while the other end region is closed.
  • each end region of the shear cylinder has a fan and that the two fans are arranged in opposite directions.
  • the invention creates a self-extracting shear cylinder in which a separate vacuum suction source is completely unnecessary. This not only drastically reduces the outlay in terms of equipment compared to the previously known device, but also gives a considerable further advantage. Because the at least one fan rotates synchronously with the shear cylinder, the delivery rate of the fan increases with increasing rotational speed of the shear cylinder.
  • the device according to the invention therefore has a fully automatic suction power control which, in the case of the known device, could only be achieved by special control apparatuses and circuits.
  • a suction power control is particularly advantageous in the case of shear cylinders having shear spirals, because such shear cylinders have a pronounced self-ventilation, which has the disadvantageous consequence that the threads which are actually to be erected or the pile to be lifted are pressed down in the shear zone. With the appropriate design of the fans, this self-ventilation effect can be drastically reduced or even eliminated with the device according to the invention.
  • shear cylinder is rotatably mounted on its outer casing, so that the full cross section of the interior of the Schercytin is available for the installation or attachment of the fan or fans and for the air flow.
  • the shear cylinder 10 shown in FIG. 1 has a jacket 12 designed as a hollow cylinder 11 with a smooth outer jacket surface 13 and a smooth inner jacket surface 14.
  • knife-like shear spirals 16 fastened with end rings 44 and provided with baseboards 15 are fastened.
  • the shear spirals 16, as their name implies, run helically in the longitudinal direction of the shear cylinder 0.
  • the cylinder jacket 12 is equipped with a large number of air passage openings 17, which are designed as elongated holes in the exemplary embodiment.
  • a fan 22 is arranged in each of the end face regions 19 in the interior 21 of the shear cylinder 10, which in the exemplary embodiment according to FIG. 1 is designed as an axial fan designed like a propeller. As a result, it is equipped with a plurality of air blades or vanes 24.
  • the rotors of the two axial fans 23 are rotatably connected to the shear cylinder 10. They suck - with increasing speed of the shear cylinder 10 with increasing power - air from the outer environment of the shear cylinder 10 through the air passage openings 17 into the interior 21 and blow this air mixed with sheared particles out of the interior 21 of the shear cylinder 10.
  • an exhaust air pipe can be arranged on the shear cylinders.
  • the shear cylinder can also be connected directly to a dust separator into which the air is then blown directly by the fans 23.
  • the embodiment according to FIG. 2 does not differ in terms of the structural design of the shear cylinder 10 from that according to FIG. 1.
  • radial fans 25 are connected to the end face sections 19, the paddle wheels 26 at 27 being connected in a rotationally fixed manner to the shear cylinder 10 are.
  • the fan housing 28 leads into either a pipe or a dust collector.
  • Both exemplary embodiments have in common that a fan is arranged in (FIG. 1) or on (FIG. 2) each end region 19 of the shear cylinder 10.
  • the two fans of a shear cylinder then of course work in opposite directions, so that both of them act in the interior 21 of the shear cylinder 10 to generate negative pressure.
  • FIG. 3 schematically shows the mode of operation of a clipper equipped with a shear cylinder 10 according to the invention.
  • the shear cylinder 10 rotating in the direction of the arrow 29 interacts with a lower or counter knife 30 in the shear region 31.
  • the web 33 pointing with its fibers or its pile 32 in the direction of the Schzeug 12/18 is guided over a pointed table 34 as a web support 35 in the direction of the arrow 36.
  • a hollow table 37/38, having two table edges 37 and 38 spaced apart from one another, for a web 10 ′ is indicated as an alternative possibility of a web support with dash-dotted lines.
  • the shear cylinder 10 is surrounded by a nozzle box 39 at short intervals on all sides, the right side wall of which, with respect to the illustration, is provided by a part of a machine frame designated by 40.
  • the nozzle box 39 leaves only a narrow, essentially gap-shaped opening 41 directly in the area of the shear zone 31; otherwise it completely surrounds the outside of the shear cylinder 10. The result of this is that the vacuum generated in the interior 21 of the shear cylinder 10 in the direction of travel 36 exerts a suction behind the shear zone 31 on the pile 32 of the web 33, which is illustrated by the arrow array 42.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Scheren von Stoffbahnen mit einem mit Scherspiralen versehenen oberhalb einer Stoffbahnauflage angeordneten als Hohlzylinder ausgebildeten Scherzylinder, dessen Innenraum an eine in diesem Unterdruck erzeugende Absaugeinrichtung angeschlossen und dessen Mantel mit Luftdurchtrittsöffnungen versehen ist.The invention relates to a device for shearing fabric webs with a shear cylinder provided with shear spirals arranged above a fabric web support and designed as a hollow cylinder, the interior of which is connected to a suction device generating this vacuum and the jacket of which is provided with air passage openings.

Eine derartige Vorrichtung ist beispielsweise durch die DE-A Nr. 1635304 bekannt geworden. Bei dieser bekannten Vorrichtung wird die den Scherzylinder umgebende Luftschicht durch die in seinem Mantel angeordneten Luftdurchtrittsöffnungen angesaugt und durch den Innenraum des Scherzylinders abtransportiert. Die Absaugung hat einmal den Zweck, die Fasern der Warenbahn (Flor oder Fäden) an der Scherstelle schnittgerecht aufzurichten und abgescherte Fäden abzusaugen. Bei der bekannten Vorrichtung ist der Innenraum des Scherzylinders über Rohrleitungen mit einer Vakuumsaugquelle verbunden.Such a device is known for example from DE-A No. 1635304. In this known device, the air layer surrounding the shear cylinder is sucked in through the air passage openings arranged in its jacket and transported away through the interior of the shear cylinder. The purpose of suction is to straighten the fibers of the web (pile or threads) at the shear point and to cut off sheared threads. In the known device, the interior of the shear cylinder is connected to a vacuum suction source via pipes.

Ziel dervorliegenden Erfindung ist es, den apparativen Aufwand einer solchen Vorrichtung zu verringern.The aim of the present invention is to reduce the expenditure on equipment of such a device.

Die Lösung dieser Aufgabe besteht darin, dass die Absaugeinrichtung aus wenigstens einem Ventilator besteht, dessen Rotor im oder am Stirnendbereich des Scherzylinders drehfest mitdiesem verbunden ist.The solution to this problem is that the suction device consists of at least one fan, the rotor of which is connected to the latter in a rotationally fixed manner in or at the end region of the shear cylinder.

Dabei kann nur in oder an einem Stirnendbereich des Scherzylinders ein Ventilator vorgesehen sein, während der andere Stirnendbereich geschlossen ist.A fan can be provided only in or on one end region of the shear cylinder, while the other end region is closed.

Es ist jedoch auch möglich, dass jeder Stirnendbereich des Scherzylinders einen Ventilator aufweist und dass die beiden Ventilatoren gegenläufig wirkend angeordnet sind.However, it is also possible that each end region of the shear cylinder has a fan and that the two fans are arranged in opposite directions.

Die Erfindung schafft mit diesen Merkmalen einen sich selbst absaugenden Scherzylinder, bei dem eine separate Vakuumsaugquelle völlig entbehrlich ist. Dadurch ist nicht nur der apparative Aufwand gegenüber der vorbekannten Vorrichtung drastisch gesenkt, sondern es ergibt sich ein erheblicher weiterer Vorteil. Dadurch, dass nämlich der mindestens eine Ventilator synchron mit dem Scherzylinder rotiert, nimmt mit steigender Rotationsgeschwindigkeit des Scherzylinders die Förderleistung des Ventilators zu. Die erfindungsgemässe Vorrichtung besitzt daher eine vollautomatische Saugleistungsregelung, die bei der vorbekannten Vorrichtung nur durch besondere Regelapparaturn und -schaltungen erreicht werden könnte. Eine Saugleistungsregelung ist bei Scherspiralen besitzenden Scherzylindern von besonderem Vorteil, weil solche Scherzylinder eine ausgeprägte Eigenventilation aufweisen, die die nachteilige Folge hat, dass in der Scherzone die eigentlich aufzurichtenden Fäden bzw. der anzuhebende Flor niedergedrückt werden. Mit der erfindungsgemässen Vorrichtung lässt sich bei entsprechender Auslegung der Ventilatoren dieser Eigenventilationseffekt in seinen schädlichen Folgen drastisch mindern oder sogar aufheben.With these features, the invention creates a self-extracting shear cylinder in which a separate vacuum suction source is completely unnecessary. This not only drastically reduces the outlay in terms of equipment compared to the previously known device, but also gives a considerable further advantage. Because the at least one fan rotates synchronously with the shear cylinder, the delivery rate of the fan increases with increasing rotational speed of the shear cylinder. The device according to the invention therefore has a fully automatic suction power control which, in the case of the known device, could only be achieved by special control apparatuses and circuits. A suction power control is particularly advantageous in the case of shear cylinders having shear spirals, because such shear cylinders have a pronounced self-ventilation, which has the disadvantageous consequence that the threads which are actually to be erected or the pile to be lifted are pressed down in the shear zone. With the appropriate design of the fans, this self-ventilation effect can be drastically reduced or even eliminated with the device according to the invention.

Ein weiteres vorteilhaftes Merkmal besteht darin, dass der Scherzylinder an seinem Aussenmantel drehgelagert ist, so dass für den Einbau oder Anbau des Ventilators oder der Ventilatoren und für die Luftführung der volle Querschnitt des Scherzytinder-innenraums verfügbar ist.Another advantageous feature is that the shear cylinder is rotatably mounted on its outer casing, so that the full cross section of the interior of the Schercytin is available for the installation or attachment of the fan or fans and for the air flow.

Die Erfindung wird nachfolgend anhand zweier Ausführungsbeispiele näher erläutert. In den Figuren zeigen:

  • Fig. 1 einen mit Axialventilatoren bestückten Scherzylinder im Längsschnitt,
  • Fig. 2 einen mit Radialventilatoren bestückten Scherzylinder im Längsschnitt, und
  • Fig. 3 einen Querschnitt durch eine Schervorrichtung im Bereich der Scherzone.
The invention is explained in more detail below using two exemplary embodiments. The figures show:
  • 1 is a longitudinal section of a shear cylinder equipped with axial fans,
  • Fig. 2 shows a shear cylinder equipped with radial fans in longitudinal section, and
  • Fig. 3 shows a cross section through a shear device in the area of the shear zone.

Der in Fig. 1 dargestellte Scherzylinder 10 besitzt einen als Hohlzylinder 11 ausgebildeten Mantel 12 mit glatter Aussenmantelfläche 13 und glatter Innenmantelfläche 14. Auf der Aussenmantelfläche 13 sind mit Endringen 44 befestigte und mit Fussleisten 15 versehene messerartige Scherspiralen 16 befestigt. Die Scherspiralen 16 verlaufen, wie ihr Name aussagt, schraubenlinienförmig in Längsrichtung des Scherzylinders 0. Im Überdeckungsbereich der Scherspiralen 16 ist der Zylindermantel 12 mit einer Vielzahl von Luftdurchtrittsöffnungen 17, die im Ausführungsbeispiel als Langlöcher ausgebildet sind, bestückt. In Wälzlagern 18, die auf der Aussenmantelfläche 13 in den Endabschnitten 19 des Scherzylinders 10 angeordnet sind, ist der Scherzylinder 10 um seine Längsachse 20 rotierbar gelagert.The shear cylinder 10 shown in FIG. 1 has a jacket 12 designed as a hollow cylinder 11 with a smooth outer jacket surface 13 and a smooth inner jacket surface 14. On the outer jacket surface 13, knife-like shear spirals 16 fastened with end rings 44 and provided with baseboards 15 are fastened. The shear spirals 16, as their name implies, run helically in the longitudinal direction of the shear cylinder 0. In the overlap region of the shear spirals 16, the cylinder jacket 12 is equipped with a large number of air passage openings 17, which are designed as elongated holes in the exemplary embodiment. In rolling bearings 18, which are arranged on the outer surface 13 in the end sections 19 of the shear cylinder 10, the shear cylinder 10 is rotatably mounted about its longitudinal axis 20.

In den Endstirnbereichen 19 ist im Innenraum 21 des Scherzylinders 10 jeweils ein Ventilator 22 angeordnet, der im Ausführungsbeispiel nach Fig. 1 als luftschraubenartig gestalteter Axialventilator ausgebildet ist. Demzufolge ist er mit einer Mehrzahl von Luftschaufeln oder -flügeln 24 ausgestattet.A fan 22 is arranged in each of the end face regions 19 in the interior 21 of the shear cylinder 10, which in the exemplary embodiment according to FIG. 1 is designed as an axial fan designed like a propeller. As a result, it is equipped with a plurality of air blades or vanes 24.

Die Rotoren der beiden Axialventilatoren 23 sind drehfest mit dem Scherzylinder 10 verbunden. Sie saugen - mit steigender Drehzahl des Scherzylinders 10 mit wachsender Leistung - Luft von der äusseren Umgebung des Scherzylinders 10 durch die Luftdurchtrittsöffnungen 17 hindurch in den Innenraum 21 und blasen diese mit abgescherten Partikeln versetzte Luft aus dem Innenraum 21 des Scherzylinders 10 hinaus. In nicht dargestellter Weise kann an den Scherzylindern eine Abluft-Rohrleitung angeordnet sein. Der Scherzylinder kann auch unmittelbar an eine Staubabscheidevorrichtung angeschlossen sein, in die dann die Luft von den Ventilatoren 23 direkt hineingeblasen wird.The rotors of the two axial fans 23 are rotatably connected to the shear cylinder 10. They suck - with increasing speed of the shear cylinder 10 with increasing power - air from the outer environment of the shear cylinder 10 through the air passage openings 17 into the interior 21 and blow this air mixed with sheared particles out of the interior 21 of the shear cylinder 10. In a manner not shown, an exhaust air pipe can be arranged on the shear cylinders. The shear cylinder can also be connected directly to a dust separator into which the air is then blown directly by the fans 23.

Die Ausführung nach Fig. 2 unterscheidet sich hinsichtlich der konstruktiven Ausgestaltung des Scherzylinders 10 nicht von derjenigen nach Fig. 1. Hier sind aber statt der Axialventilatoren 23 Radialventilatoren 25 an die Endstirnabschnitte 19 angeschlossen, wobei die Schaufelräder 26 bei 27 drehfest mit dem Scherzylinder 10 verbunden sind. Das Ventilatorgehäuse 28 führt entweder in eine Rohrleitung oder eine Staubabscheidevorrichtung.The embodiment according to FIG. 2 does not differ in terms of the structural design of the shear cylinder 10 from that according to FIG. 1. Here, instead of the axial fans 23, radial fans 25 are connected to the end face sections 19, the paddle wheels 26 at 27 being connected in a rotationally fixed manner to the shear cylinder 10 are. The fan housing 28 leads into either a pipe or a dust collector.

Beiden Ausführungsbeispielen ist gemeinsam, dass in (Fig. 1) oder an (Fig. 2) jedem Stirnendbereich 19 des Scherzylinders 10 ein Ventilator angeordnet ist. Die beiden Ventilatoren eines Scherzylinders arbeiten dann natürlich gegenläufig, so dass beide jeweils im Innenraum 21 des Scherzylinders 10 auf Unterdruckerzeugung wirken.Both exemplary embodiments have in common that a fan is arranged in (FIG. 1) or on (FIG. 2) each end region 19 of the shear cylinder 10. The two fans of a shear cylinder then of course work in opposite directions, so that both of them act in the interior 21 of the shear cylinder 10 to generate negative pressure.

Es ist, insbesondere bei nicht zu langen Scherzylindern auch möglich, nur an einer Stirnendseite 19 einen Ventilator 22 anzuordnen. In diesem Falle würde der andere Endstirnbereich des Hohlzylinders 11 einen geschlossenen Boden aufweisen.It is also possible, particularly in the case of shear cylinders which are not too long, to arrange a fan 22 only on one end face 19. In this case, the other end face region of the hollow cylinder 11 would have a closed bottom.

Fig. 3 zeigt schematisch die Funktionsweise einer mit einem erfindungsgemässen Scherzylinder 10 ausgerüsteten Schermaschine. Der in Pfeilrichtung 29 umlaufend rotierende Scherzylinder 10 wirkt mit einem Unter- oder Gegenmesser 30 im Scherbereich 31 zusammen. Dort ist die mit ihren Fasern bzw. ihrem Flor 32 in Richtung auf das Scherzeug 12/18 weisende Warenbahn 33 über einen Spitztisch 34 als Warenbahnauflage 35 in Pfeilrichtung 36 geführt. Ein zwei voneinander distanzierte Tischkanten 37 und 38 aufweisender Hohltisch 37/38 für eine Warenbahn 10' ist als alternative Möglichkeit einer Warenbahnauflage mit strichpunktierten Linien angedeutet.3 schematically shows the mode of operation of a clipper equipped with a shear cylinder 10 according to the invention. The shear cylinder 10 rotating in the direction of the arrow 29 interacts with a lower or counter knife 30 in the shear region 31. There, the web 33 pointing with its fibers or its pile 32 in the direction of the Schzeug 12/18 is guided over a pointed table 34 as a web support 35 in the direction of the arrow 36. A hollow table 37/38, having two table edges 37 and 38 spaced apart from one another, for a web 10 ′ is indicated as an alternative possibility of a web support with dash-dotted lines.

Um eine lokal auf die Scherzone 31 besondere eng begrenzte und starke Saugwirkung zu erzielen, ist der Scherzylinder 10 mit allseits geringen Abständen von einem Düsenkasten 39 umgeben, dessen bezüglich der Darstellung rechten Seitenwand von einem mit 40 bezeichneten Teil eines Maschinengestells bereitgestellt wird. Der Düsenkasten 39 lässt nur eine schmale im wesentlichen spaltförmige Öffnung 41 unmittelbar im Bereich der Scherzone 31 frei; ansonsten umgibt er die Aussenseite des Scherzylinders 10 vollständig. Das hat zur Folge, dass der im Innenraum 21 des Scherzylinders 10 erzeugte Unterdruck in Warenlaufrichtung 36 hinter der Scherzone 31 auf den Flor 32 der Warenbahn 33 einen Sog ausübt, der mit der Pfeilschar 42 verdeutlicht ist. Dies hat ein Aufrichten des Flors in nahezu exakt radialer Richtung bezüglich des Scherzylinders 10 zur Folge. Die abgescherten Fadenreste werden, ebenfalls infolge des im Innenraum 21 des Scherzylinders 10 herrschenden Unterdrucks abgesaugt. Der Stromverlauf dieser Fäden ist schematisch mit der Pfeilschar 43 angedeutet.In order to achieve a locally very limited and strong suction effect on the shear zone 31, the shear cylinder 10 is surrounded by a nozzle box 39 at short intervals on all sides, the right side wall of which, with respect to the illustration, is provided by a part of a machine frame designated by 40. The nozzle box 39 leaves only a narrow, essentially gap-shaped opening 41 directly in the area of the shear zone 31; otherwise it completely surrounds the outside of the shear cylinder 10. The result of this is that the vacuum generated in the interior 21 of the shear cylinder 10 in the direction of travel 36 exerts a suction behind the shear zone 31 on the pile 32 of the web 33, which is illustrated by the arrow array 42. This results in the pile being erected in an almost exactly radial direction with respect to the shear cylinder 10. The sheared thread remnants are sucked off, also as a result of the negative pressure prevailing in the interior 21 of the shear cylinder 10. The current flow of these threads is indicated schematically by the arrow family 43.

Claims (4)

1. Apparatus for shearing fabrics having a shearing cylinder provided with shearing helices, disposed above a support for the width of material and formed as a hollow cylinder, whose inner chamber is connected to a suction device producing an underpressure in this chamber and whose jacket is provided with air inlet apertures, characterised in that the suction device comprises at least one fan (22), whose rotor is connected to the shearing cylinder (10) in a rotationally fixed manner in or to the region of the front end area (19) of the shearing cylinder (10).
2. Apparatus as claimed in Claim 1, characterised in that a fan (22) is only provided in or at a front end area (19) of the shearing cylinder (10), whilst the other front end area is closed.
3. Apparatus as claimed in Claim 1, characterised in that each front end area (19) of the shearing cylinder (10) comprises a fan (22) and in thatthetwofans (22) are disposed to contrarotate.
4. Apparatus as claimed in one of Claims 1 to 3, characterised in that the shearing cylinder (10) is rotationally mounted at its outer jacket surface (13).
EP83108232A 1982-09-23 1983-08-20 Apparatus for shearing fabrics Expired EP0106068B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3235161A DE3235161C2 (en) 1982-09-23 1982-09-23 Device for shearing lengths of fabric
DE3235161 1982-09-23

Publications (2)

Publication Number Publication Date
EP0106068A1 EP0106068A1 (en) 1984-04-25
EP0106068B1 true EP0106068B1 (en) 1985-11-06

Family

ID=6173915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108232A Expired EP0106068B1 (en) 1982-09-23 1983-08-20 Apparatus for shearing fabrics

Country Status (4)

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EP (1) EP0106068B1 (en)
DD (1) DD211591A5 (en)
DE (2) DE3235161C2 (en)
ES (1) ES8405458A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538922C1 (en) * 1985-11-02 1987-04-02 Menschner Maschf Johannes Device for shearing a moving web of fabric
EP0594289A1 (en) * 1992-10-20 1994-04-27 Shibata Iron Works Co., Ltd. Shearing apparatus
FR2715172B1 (en) * 1994-01-17 1997-03-21 Claude Mouchet Mower blade for the textile and other spin-off industries.
US5483729A (en) * 1994-05-18 1996-01-16 Ghm Industries, Inc. Shearing machine having multiple close adjustment devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR665116A (en) * 1927-12-17 1929-09-14 Teinturerie Weidmann S A Device intended to pass in prolonged immersion the fabrics deployed through a bleaching, washing or dyeing bath
US3008212A (en) * 1959-08-10 1961-11-14 Riggs & Lombard Inc Rotary shearing member
DE1635304C3 (en) * 1967-07-03 1981-01-22 Riggs & Lombard, Inc., Lowell, Mass. (V.St.A.) Device for shearing a moving web of fabric
US3864948A (en) * 1973-04-19 1975-02-11 Daiwa Machinery Works Ltd Suction drum washer

Also Published As

Publication number Publication date
EP0106068A1 (en) 1984-04-25
DE3235161C2 (en) 1984-07-12
DE3361179D1 (en) 1985-12-12
DD211591A5 (en) 1984-07-18
DE3235161A1 (en) 1984-03-29
ES525591A0 (en) 1984-06-01
ES8405458A1 (en) 1984-06-01

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