EP0356795A2 - Appareil de nettoyage pour les chapeaux marchants de la machine de cardage - Google Patents

Appareil de nettoyage pour les chapeaux marchants de la machine de cardage Download PDF

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Publication number
EP0356795A2
EP0356795A2 EP89114951A EP89114951A EP0356795A2 EP 0356795 A2 EP0356795 A2 EP 0356795A2 EP 89114951 A EP89114951 A EP 89114951A EP 89114951 A EP89114951 A EP 89114951A EP 0356795 A2 EP0356795 A2 EP 0356795A2
Authority
EP
European Patent Office
Prior art keywords
brush
suction
cleaning device
suction device
strips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89114951A
Other languages
German (de)
English (en)
Other versions
EP0356795A3 (fr
Inventor
Giuseppe Verzilli
Robert Demuth
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19883828581 external-priority patent/DE3828581A1/de
Priority claimed from DE19883834452 external-priority patent/DE3834452A1/de
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0356795A2 publication Critical patent/EP0356795A2/fr
Publication of EP0356795A3 publication Critical patent/EP0356795A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/76—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area
    • D01G15/78—Arrangements for stripping flats
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/76—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area
    • D01G15/78—Arrangements for stripping flats
    • D01G15/785—Arrangements for stripping flats by suction or blowing

Definitions

  • the present invention relates to a cleaning device for the revolving lids of a card, in which the strips consisting of fibers and dirt particles, carried by the revolving lids or by the tips of the revolving liner sets, are detached from the revolving lids by a comb and sucked off by a suction device.
  • the object of the present invention is therefore to provide excellent cleaning of the revolving cover without, however, having to increase the suction power, the cleaning device should be simple, reliable and inexpensive.
  • the suction device is designed as a migrating suction device which moves along the loosened strips or covers and these in some areas that the suction device sucks a brush that is movable relative to the lids, which dips into the lid set after suction of the strips and loosens deep-lying dirt, and that the suction flow of the suction device also transports this deep-lying dirt away.
  • the suction power is always concentrated on a small area of the suction cover, so that a suction effect can be achieved with a reasonable suction power.
  • the revolving lids revolve relatively slowly, there is sufficient time to clean the entire length of each revolving lid during its revolving movement below the suction device, which preferably migrates transversely to the revolving direction of the lid. Because the deep dirt dissolved by the brush is also transported away by the suction flow of the suction device, the additional deep cleaning by the brush does not lead to a significant increase in the suction power required.
  • the cleaning device can be designed so that the suction device with the brush moves along the lid or so that the brush is rotatably mounted about its longitudinal axis and extends over the entire length of the lid (L), i.e. is only partially extracted during the migration of the suction device.
  • a preferred embodiment is characterized in that the suction device has a housing which is divided by means of a partition into a suction nozzle for the partial suction of the loosened strips and a suction chamber which at least partially covers the brush.
  • the dirt dissolved by the brush is only introduced into the suction flow that removes the strips when the strips are completely covered by this suction flow. This prevents the air flow, which transports the dirt from the brush, from having an adverse effect on the suction flow for the strips.
  • the suctioned-off chamber containing the brush preferably lies on the side of the partition facing away from the comb. In this way, the deep cleaning is only carried out after the strips have been loosened, and it is also prevented that the strips themselves lead to clogging of the brush with fibers.
  • a chamber containing the brush can be located next to the suction nozzle. This is particularly preferred when the covers themselves are relatively narrow. The risk of clogging of the brush can be easily avoided in this embodiment, since the traveling suction device only cleans during a movement in a transverse direction of the card and the brush seen in the cleaning direction comes into use after the suction nozzle, i.e. the deep cleaning is only carried out if strips have been vacuumed beforehand.
  • the brush is arranged to be movable towards and away from the revolving cover. This up and down movement of the brush achieves an additional cleaning effect, so that overall a very high degree of cleaning can be achieved.
  • a chamber containing the brush preferably has side walls which reach close to the brush tips and are brought together at the point which is at least substantially the most distant from the lids to form a suction nozzle which opens into the suction flow.
  • the loosened dirt with the brush tips and the air masses guided with these tips is effectively guided to the suction nozzle formed by the side walls, where they can then be removed effectively.
  • the suction nozzles formed by the side walls also lead to an increased air speed in the area of the suction nozzle, so that the dirt removal is particularly effective at this point.
  • the brush can preferably be driven by a particularly pneumatic or electric motor carried on the moving part of the suction device.
  • the drive for the brushes can be made very light and inexpensive, so that complex drive transmission elements are not required.
  • the brush can also be easily overridden by switching off the motor, e.g. if only a periodic deep cleaning of the revolving cover is desired.
  • the brush can be rotated on a shaft that extends over the entire width of the card, ie over the entire length of the revolving cover be arranged which can be driven by a motor mounted on the card frame.
  • a gear is used to either increase the speed of rotation of the brush relative to the shaft or to reduce the speed of travel of the suction device.
  • the wandering suction device expediently abuts the brush via axial bearings, the brush moving with the suction device.
  • the comb itself is preferably carried on a pivot axis and can be driven to pivot back and forth. This pivoting movement causes the strips to be lifted from the cover set so that they are only held loosely by the cover set and are easy to extract. This means that the suction power required is lower.
  • the comb can be lowered and raised on the pivot axis.
  • the comb can first be immersed deeply in the clothing in order to loosen the strips and any other dirt. It is then lifted at the end of the pivoting movement in such a way that it barely touches the cover set during the rearward pivoting movement, so that the comb itself is cleaned by the cover set.
  • the shaft driving the brush or the traveling suction device can also be used to guide the suction device during its traveling movement.
  • the shaft is also used for another purpose, which leads to an inexpensive, compact device.
  • a brush which is rotatably mounted about its longitudinal axis and extends over the entire length of the cover.
  • This brush preferably consists of one or more brush strips which extend helically around the axis of rotation, bristle-free regions being present between adjacent rotations of the bristle strip or of the individual bristle strips.
  • Fig. 1 shows a side view of a card 11, in which coming from a flake feeder 12 flakes in the form of a wadding 13 between a feed roller 14 and a trough plate 15 and fed in the form of isolated cotton fibers by a breeze 16.
  • the cotton fibers are then transferred from the breeze 16 to the drum 17 and initially move past stationary covers 18 until they come in the area of the so-called revolving cover arrangement 19.
  • the combed cotton fibers are taken over by a customer 21 and via a cross belt 22 to form a sliver 23, which is then placed in a can 27 via a funnel 24, measuring rollers 25 and a deflection roller 26.
  • the revolving cover arrangement 19 consists of individual covers 28 which, as can also be seen from FIG. 2, are carried at their ends by respective chains 29, 31 and circulate according to the arrow 32.
  • Each lid 28 carries a lid set made of fine wires, which are only shown in regions in FIG. 2 at 32.
  • the spines are directed downwards in the direction of the drum carrying a similar spike set, so that the spike sets in the upper run point outwards and upwards.
  • the comb 34 extends over the entire length of the revolving cover and it is supported on stub axles at its two ends in the side plates 36, 37 of the card frame.
  • the comb 34 is driven by a motor gear arrangement 38 for a back and forth swiveling movement, which will be explained in more detail later. It is also possible to ensure an up and down movement of the comb, as will also be explained in more detail later.
  • the suction device 35 is mounted on two guide rods 39, 41, the guide rod 41 being designed at the same time as a shaft which can be driven by the motor 42. This shaft drives the suction device 35 to move back and forth along the guide 39 or along the shaft 41. This movement is brought about by a gear, not shown, which moves with the suction device 35.
  • the suction device 35 is connected to a suction source via a pipe support 43 and a flexible hose, not shown.
  • the flexible hose is designed so that it allows the desired reciprocation of the suction device between the two side plates 36 and 37 and ensures a sufficiently strong suction flow in all intermediate points between these two side walls.
  • FIG. 3 A first relatively simple embodiment of the subject of the application can be seen in FIG. 3.
  • the revolving cover 28 On the lower line in FIG. 3, one can see the revolving cover 28 with the respective barbed sets 32. In the view of FIG. 3, these covers move in the direction of the arrow 45, this movement taking place due to the revolving chains 29.
  • the revolving cover By means of this chain drive, the revolving cover is not only moved in the direction of arrow 45, but they are articulated to one another so that they can be moved around the various deflecting rollers 46 of the revolving cover arrangement 19.
  • the comb 34 has downwardly projecting spikes 48 which, owing to the reciprocating movement of the comb 34 in accordance with the double arrow 49, are able to detach the exit fibers carried by the traveling covers, ie the so-called strips, from the traveling covers, the loosened strips continue to be carried on the tips of the spines in the direction of the suction device 35.
  • the suction device 35 has the shape of a box which tapers somewhat in the direction of the pipe socket 43 and is open on its underside 51, so that this underside forms an opening through which air is sucked through the suction device.
  • a brush 54 is attached to this suction device, so that the brush with the suction device is moved in the direction of the double arrow 55 of FIG. 2 along the revolving cover.
  • the bristles (e.g. wire bristles) 56 of the brush 54 engage in the spiked sets of the revolving covers and loosen the deep-lying dirt. This also takes place in the region of the open underside 51 of the suction device, so that the loosened, deep-lying dirt particles and fibers are also caught by the air flow into the suction device and are removed with the air flow through the pipe support 43.
  • the brush 54 is therefore designed as a rail brush. It is located on the base of the set and is attached to the bearing plates. The dirt is loosened and suctioned off from the base of the cover both by the movement of the cover and by the movement of the suction device along the cover.
  • Fig. 3 also shows that the comb 34 can be moved up and down in the direction of the two arrows 60.
  • This movement coupled with the pivoting movement according to the double arrow 49 is caused by the gear 38 and in such a way that the comb is first immersed deep in the set, is pivoted forward in the direction of arrow 45 (the increase during the Pivotal movement or thereafter can be done) and then moved back, the tips of the wire teeth or spikes 48 of the comb 34 grazing along the tips of the spikes of the cover sets and thus through the cover sets themselves getting cleaned.
  • the comb is again in its starting position and the combined back and forth swiveling movement and combined swiveling and up and down movement can be repeated.
  • FIG. 4 shows a preferred embodiment in which the stationary rail brush of the embodiment according to FIG. 3 has been replaced by a rotatable brush 58.
  • the brush 58 is arranged so as to be rotatable about the axis of rotation 62 and it is driven directly by the shaft 41.
  • the brush 58 is arranged in a chamber 63, which is delimited at its front end in the direction of arrow 45 by a partition 64 of the suction device.
  • This dividing wall also forms with the front 52 of the suction device 53 a front suction nozzle 65 on the underside of the suction device, which, as before, sucks off the loosened strips.
  • a front suction nozzle 65 on the underside of the suction device, which, as before, sucks off the loosened strips.
  • an air flow is also generated upwards through the chamber 63, which takes the dirt particles loosened from the bristles 67 of the brush 58 with it and feeds them into the air flow through the pipe socket 53 as previously described, so that these dirt particles also pass through the Suction device can be removed.
  • the brush 58 it is not absolutely necessary for the brush 58 to be driven by the shaft 41. It can be driven by a separate motor, which is mounted on the housing of the suction device 35, as well is indicated schematically in Fig. 5 at 68. In this case, the shaft 41 is placed outside the housing of the suction device 35, as indicated at 69, for example.
  • the brush 58 is not only rotatably attached, but can also be moved up and down in accordance with the double arrow 71, the uppermost position of the brush being indicated at 72.
  • the brush 58 By lifting the brush 58, the bristles 67 are disengaged from the cover sets, so that the cleaning action of the bristles can be temporarily overridden.
  • the forced up and down movement of the brush during the brush movement can also lead to improved cleaning.
  • the comb 34 can also be driven to move up and down in accordance with the double arrow of the embodiment according to FIG. 3.
  • the embodiment according to FIG. 6 is very similar to the embodiment according to FIGS. 4 and 5, only here the brush 58 is accommodated within an approximately cylindrical chamber 73, which is formed on its front by the front wall 74 and on its rear by the rear wall 75 becomes.
  • the front wall 74 takes over the function of the partition wall 64 of the embodiment according to FIG. 4 and, together with the rear wall 75 and the side walls of the suction device, forms a suction nozzle 76 above the brush 58, through which the dirt loosened by the brush is separated out.
  • the centrifugal force of the brush is used to accelerate the carried dirt particles through the suction nozzle 76, so that the centrifugal force supports the suction power in a special way.
  • FIG. 7 is similar to the embodiment according to FIG. 6, only here the front and side walls 74, 75 of the chamber 73 for the rotatable brush 58 are designed so that the brush 58 an up and down movement 71 corresponding to the im 4 can perform up and down movement 71 described in connection with the embodiment. 7 also shows the example that the direction of rotation of the brush 58 can be switched in this case. This can be particularly advantageous if the brush 58 tends to become contaminated itself, since the cover sets can have a cleaning effect on the bristles of the brush 58 as a result of the switching movement. By switching the rotary movement of the brush again, the dirt thus loosened can be removed again by the suction nozzle 76. In this example too, the comb 34 can be moved up and down in accordance with the double arrow 58.
  • the end faces of the brush chamber i.e. the sides that are parallel to the end faces of the rotating brushes, can also be covered with closed walls, which would normally be the case.
  • the side walls of the housing of the suction device 35 run continuously down to the underside 51. As a result, the suction power is concentrated more in the area of the brush.
  • FIG. 8 shows in a cross section corresponding to that of FIG. 5 that the brush 58 can be placed next to the suction opening 65 provided for the suction of the respective strip.
  • This arrangement is particularly recommended if the suction device is designed so that deep cleaning by brush 58 only takes place when the suction device moves in the direction of arrow 81. It must be pointed out at this point that with a rotatable brush arrangement a high rotational speed of the brush is not necessary at all, but here the dirt is loosened by a relatively slow rotational movement of the bristles, for example in the range from 80 to 120 revolutions per minute.
  • FIG. 8a shows a variant of the suction device of FIG. 8, in that the suction nozzle is extended on one side by the dimension (K), namely in the direction of the comb 34.
  • This extension has the advantage that the suction nozzle detects the cover 28 moving towards it earlier than the suction nozzle of FIG. 8.
  • FIG. 9 shows a variant of the device of FIG. 8a, in that a nozzle 65.1 is provided on the other side of the brush 58 parallel to the nozzle 65 of FIG. 8a. This means that a double suction nozzle is provided, between which the brush is arranged.
  • the brush 58 is also driven by the drive motor 68, the only difference compared to the device of FIG. 8a is that the motor shaft, on which the brush 58 is placed, projects through the suction nozzle 65.1.
  • FIG. 10 shows FIG. 9 according to the section lines XX. From this it can be seen that in addition to the suction of the suction nozzles 65 and 65.1, the space in which the brush 58 is located is also extracted.
  • the connecting piece 43 is connected to a vacuum source as described earlier.
  • the mouth length (M) of the suction nozzle 65 in the direction of the comb must be selected to be large enough to correspond to the displacement speed of the suction device, along the displacement length (S), and the displacement speed of the cover 28, the suction nozzle 65 could be displaced over the displacement length (S) (ie between its two end positions) before a not yet cleaned cover part has reached the brush 58 or 58.1.
  • the brush 58.1 has a length that is substantially equal to or greater than the length of the lid (L). Being larger can only be a few millimeters to ensure that the entire length of the lid is covered by the cleaning action of the brush.
  • the length M of the nozzle 65 in FIG. 12 can be chosen to be somewhat shorter if the suction effect extends beyond the nozzle into the dashed area.
  • this variant requires a higher amount of air or air speed in order to have enough energy outside the nozzle to extract strips.
  • FIG. 14 shows a brush 58 which is mounted on a shaft 83 which is rotatable in the direction of arrow 82 in a rotationally fixed manner.
  • the brush 58 consists of a single bristle strip 84 which extends helically around the longitudinal axis 85 of the brush 58 or the shaft 83.
  • the brush 58 has a length that is at least as long as the length L of the covers, which are not shown in FIG. 14.
  • the shaft 83 is supported in corresponding bearings on the end faces of the card. Due to the helical design of the brush 58, empty areas 86 are created between the individual rows of bristles.
  • FIG. 15 shows a side view of a housing of a suction device 35, which is designed in particular for use with the brush according to FIG. 14.
  • FIG. 15 instead of showing the chains 29, 31, only the track of the chain is seen in FIG. 15 with a broken line 87. As in the previous figures, these chains move in the direction of the arrow 32. For the sake of illustration, a single cover 28 is also shown in FIG. However, it is understood that the chains carry a variety of such lids.
  • the housing of the suction device is divided into three different suction areas. Directly behind the front edge 52 there is a suction opening 88 which is responsible for suctioning off the strips detached from the comb.
  • the rotatable brush 58 is located in a chamber closely surrounding the brush, on the upper side of which a further suction opening 89 is provided.
  • suction opening 91 On the other side of the brush from the suction opening 88 there is a further suction opening 91, which has the task of suctioning off the dirt particles which, although detached from the brush 58, are still in the covers 28.
  • dashed lines 92 and 93 are inside the suction device 35 Arranged baffles indicated that guide the suction air flows within the housing and guide all extracted dirt particles and fibers so that they are reliably sucked through the pipe socket 43 and can not fall out through the opening 89, for example.
  • a stationary scraper fitting 94 is located within the housing of the suction device and scrapes the dirt and fibers carried by the bristle strip 84 out of the brush. As soon as the scratch fitting 94 reaches a bristle-free area 86, the dirt particles that have flipped out are freed from the brush 58 and sucked off through the opening 89 and the pipe socket 43.
  • Fig. 15 also shows how the suction device 35 is guided and driven to move it.
  • the housing of the suction device 35 is mounted on a carriage 95 which carries four grooved rollers 96, only two of which can be seen in FIG. 15. The other two are located behind the grooved rollers shown in FIG. 15.
  • the grooved rollers are rotatably mounted on axle journals 97 carried by the carriage 95.
  • Above and below the grooved rollers are two guide rails 98 with a V-shaped cross section. These two spaced guide rails 98, which run parallel to one another, extend across the entire width of the card between its end faces.
  • a further guide device in the form of a guide surface 99, which also extends between the two end faces of the card and one on this guide surface 99 rolling roller 101, which is rotatably supported on the housing of the suction device Axle stub 102 is mounted.
  • the roller 101 and stub shaft 102 are arranged to be adjustable in the direction of the double arrow 104. This allows a very fine adjustment of the distance between the suction opening 88 and the lids or between the brush 58 and the lids.
  • the game 103 allows this setting within a range determined by the geometric conditions.
  • the purpose of the four-roller arrangement is to prevent the suction device 35 from tilting in a plane perpendicular to the plane of FIG. 15.
  • This drive consists of a rotating chain 105, which is driven by a chain wheel 106 on one end face of the card and around a further chain wheel (not shown) the other end of the card is deflected.
  • a link 107 is fastened to a link of the chain and rotatably engages in a driver 108 within a corresponding opening.
  • the driver 108 is in turn rotatably mounted on an axle pin 109 which is attached to the carriage 95.
  • the suction device is moved by means of the driver 108 up to one end of the card until the suction device abuts against a stop there.
  • the pin 107 then moves with the chain around the sprocket arranged on this end face and the driver 108 simultaneously rotates around the pin 109 until the pin 107 begins the return movement of the chain and removes the suction device from the stop and moves into the with the pin opposite direction moves.
  • the chain drive and the guide device of FIG. 15 can optionally also be used in the other embodiments.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP19890114951 1988-08-23 1989-08-12 Appareil de nettoyage pour les chapeaux marchants de la machine de cardage Withdrawn EP0356795A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3828581 1988-08-23
DE19883828581 DE3828581A1 (de) 1988-08-23 1988-08-23 Reinigungsvorrichtung fuer die wanderdeckel einer karde
DE3834452 1988-10-10
DE19883834452 DE3834452A1 (de) 1988-10-10 1988-10-10 Reinigungsvorrichtung fuer die wanderdeckel einer karde

Publications (2)

Publication Number Publication Date
EP0356795A2 true EP0356795A2 (fr) 1990-03-07
EP0356795A3 EP0356795A3 (fr) 1991-12-18

Family

ID=25871396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890114951 Withdrawn EP0356795A3 (fr) 1988-08-23 1989-08-12 Appareil de nettoyage pour les chapeaux marchants de la machine de cardage

Country Status (3)

Country Link
US (1) US4996746A (fr)
EP (1) EP0356795A3 (fr)
JP (1) JPH0299617A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0571199A3 (en) * 1992-05-20 1994-07-06 Hollingsworth On Wheels John D Flat stripping arrangement
EP0939149A3 (fr) * 1998-02-16 2000-08-30 Marzoli S.p.A. Appareil et procédé pour le nettoyage de garnitures des chapeaux mobiles dans une carde à chapeaux

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DE4304148B4 (de) * 1992-04-30 2008-03-13 TRüTZSCHLER GMBH & CO. KG Deckelstab für eine Karde
US5259092A (en) * 1992-10-13 1993-11-09 John D. Hollingsworth On Wheels, Inc. Method and apparatus for cleaning carding flats
US5697126A (en) * 1996-02-28 1997-12-16 The United States Of America As Represented By The Secretary Of Agriculture Grid bar scraper for a lint cleaner
JP3122370B2 (ja) * 1996-05-29 2001-01-09 株式会社伸興 除塵装置
DE19844789B4 (de) * 1998-09-30 2010-09-16 TRüTZSCHLER GMBH & CO. KG Reinigungsvorrichtung für die Wanderdeckel einer Karde
DE19844790B4 (de) * 1998-09-30 2016-08-18 Trützschler GmbH & Co Kommanditgesellschaft Antriebsvorrichtung bei einer Karde mit einem Wanderdeckel und einem Deckel
DE19957237A1 (de) * 1999-11-27 2001-05-31 Truetzschler Gmbh & Co Kg Vorrichtung zum Reinigen der langsam umlaufenden Deckelstäbe einer Karde
IT1319761B1 (it) * 2000-12-28 2003-11-03 Marzoli Spa Dispositivo di pulizia delle guide per i cappelli mobili in una cardaa cappelli
IT1319759B1 (it) * 2000-12-28 2003-11-03 Marzoli Spa Sistema di guida e trascinamento dei cappelli mobili in una carda acappelli
GB2404200B (en) * 2003-07-24 2007-11-14 Indian Card Clothing Co Ltd Cleaning, brushing & resharpening device for the flat tops of a carding machine
JP6946130B2 (ja) * 2017-09-20 2021-10-06 株式会社東芝 紡糸装置
IT201800009577A1 (it) * 2018-10-18 2020-04-18 Marzoli Machines Textile Srl Macchina cardatrice con dispositivo di pulizia ausiliario per i cappelli mobili

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0571199A3 (en) * 1992-05-20 1994-07-06 Hollingsworth On Wheels John D Flat stripping arrangement
EP0939149A3 (fr) * 1998-02-16 2000-08-30 Marzoli S.p.A. Appareil et procédé pour le nettoyage de garnitures des chapeaux mobiles dans une carde à chapeaux

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Publication number Publication date
JPH0299617A (ja) 1990-04-11
EP0356795A3 (fr) 1991-12-18
US4996746A (en) 1991-03-05

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