EP0118243B2 - Montage de chaussures utilisant un adhésif - Google Patents

Montage de chaussures utilisant un adhésif Download PDF

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Publication number
EP0118243B2
EP0118243B2 EP84300994A EP84300994A EP0118243B2 EP 0118243 B2 EP0118243 B2 EP 0118243B2 EP 84300994 A EP84300994 A EP 84300994A EP 84300994 A EP84300994 A EP 84300994A EP 0118243 B2 EP0118243 B2 EP 0118243B2
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EP
European Patent Office
Prior art keywords
shoe
adhesive
region
nozzles
toe
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.)
Expired - Lifetime
Application number
EP84300994A
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German (de)
English (en)
Other versions
EP0118243A2 (fr
EP0118243A3 (en
EP0118243B1 (fr
Inventor
Gerhard Giebel
Robert Charles Simmonds, Jr.
Andrew John Gilbride
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.)
Cambio Ragione Sociale dvsg Engineering und Patent
Original Assignee
DEUTSCHE VEREINIGTE SCHUHMASCHINEN GmbH
DVSG Patentverwaltungs GmbH
British United Shoe Machinery Ltd
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
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Priority claimed from DE3307388A external-priority patent/DE3307388C2/de
Priority claimed from US06/469,503 external-priority patent/US4436771A/en
Application filed by DEUTSCHE VEREINIGTE SCHUHMASCHINEN GmbH, DVSG Patentverwaltungs GmbH, British United Shoe Machinery Ltd filed Critical DEUTSCHE VEREINIGTE SCHUHMASCHINEN GmbH
Publication of EP0118243A2 publication Critical patent/EP0118243A2/fr
Publication of EP0118243A3 publication Critical patent/EP0118243A3/en
Application granted granted Critical
Publication of EP0118243B1 publication Critical patent/EP0118243B1/fr
Publication of EP0118243B2 publication Critical patent/EP0118243B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D25/00—Devices for gluing shoe parts
    • A43D25/047—Devices for lasting with adhesives or for gluing together insoles and uppers
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D25/00—Devices for gluing shoe parts
    • A43D25/18—Devices for applying adhesives to shoe parts
    • A43D25/185—Devices for applying adhesives to shoe parts by imprinter plates

Definitions

  • the present invention is concerned with lasting shoes using adhesive, more especially with a method of lasting shoes, using adhesive, from the toe to at least over the ball region thereof, wherein the toe and forepart region of the shoe is inwiped by means of a pair of wiper plates mounted for inwiping movement about a common pivot located at or adjacent the toe end of the shoe, and wherein the adhesive is applied partly by means of an imprinter plate which is pressed against the shoe bottom and partly by nozzles movable along opposite sides of the shoe.
  • the region to which adhesive is applied by the imprinter plate extends substantially co-extensively with the region inwiped by the pair of wiper plates. It is, however, the case that from time to time the wiper plates must be changed, e.g. for changes in style of the shoes being operated upon or indeed in some circumstances for changes in size. Where it is a question of changes in size, a compromise may be accepted whereby a single imprinter plate is to be used when operating on a range of shoe sizes.
  • the toes of shoes fall within a relatively small number of what may be termed "generic” types, viz. rounded, pointed and square. What is more, in most cases within each generic type, the toe region, i.e. the region closely adjacent the toe end of the shoe and extending only a relatively short distance therefrom, does not vary significantly between individual styles.
  • the present invention is also concerned in one of its aspects, with pulling over and lasting machines of the type described in US-A 3579691.
  • a machine comprises a support for supporting the toe end of a shoe placed, bottom down, thereon, adhesive-applying means for applying adhesive to the shoe bottom from the toe at at least over the ball region thereof, a wiper assembly by which lasting marginal portions of the shoe upper, extending from the toe at least to over the ball region of the shoe are inwiped over the insole edge and pressed against corresponding marginal portions of the insole, to effect an adhesive bond therebetween, and a control by which the movement of the wiper assembly is arrested in an intermediate position in which the wiper assembly has just traversed the margin of the insole, the control also comprising a signalling device which supplies a "fall away” signal which effects the falling away of the imprinter plate from the insole when the wiper assembly is arrested.
  • the region to which adhesive is applied by the imprinter plate extends approximately 50 mm (2'') from the toe of the shoe, measured along the longitudinal centre line of the toe region of the shoe, and thus lies within but is substantially smaller than, the region inwiped by said pair of wiper plates.
  • an imprinter plate which, because it covers only a portion of the region inwiped by the wiper plates, can be used in combination with more than one set of such wiper plates, the nozzles then being used for applying the adhesive in the region no longer covered by the imprinter plate as well as beyond such area.
  • the imprinter plate is so dimensioned as afore said, it is considered to be suitable for use with at least the great majority of individual styles within a generic type, thus rendering it necessary to provide only one such plate for each generic type.
  • the imprinter plate also serves to hold the insole against the last bottom during an initial inwiping stage of the wiper plates, an imprinter plate of such size has been found to be nevertheless adequate.
  • the nozzles apply adhesive starting adjacent the imprinter plate and being moved progressively heelwards therefrom. Furthermore, the method in accordance with the invention has been found especially advantageous where the nozzles apply adhesive along the side portions of the shoe up to the heel breast region thereof.
  • the path of movement of the nozzles in carrying out the method in accordance with the invention has to be controlled according to the individual style of shoe to be lasted.
  • the nozzles are guided along the shoe bottom by control means according to a pre-programmed set of parameters appropriate to the style of shoe lasted.
  • the control means comprises a computer which, in accordance with a preselected set of digitized co-ordinate axis values stored in memory means associated with said computer, supplies control signals to n.c. motors (as herein defined) by which the nozzles are moved along the side portions of the shoe.
  • n.c. motor where used herein is to be understood as indicating a motor the operation of which is controlled by control pulses supplied thereto in accordance with digitized information appropriate to the desired operation of the motor.
  • the digitized information is usually in the form of digitized co-ordinate axis values. Examples of such motors are stepping motors and d.c. servomotors.
  • the imprinter plate of the adhesive-applying means extends from the toe of the shoe heelwardly approximately 50 mm (2''), as measured along the longitudinal centre line of the toe region of the shoe, in that the adhesive-applying means also comprises two nozzles arranged to operate along opposite sides of the shoe bottom, starting from adjacent the imprinter plate and movable progressively heelwardly therefrom, and in that the "fall away" signal is supplied to a latching member controlled by a sensor which sensor is so positioned that, after the nozzles have moved over the region which is to be wiped by the wiper assembly and have reached a position in which the wiper assembly can continue its movement, the sensor unlatches the latching member, thereby initiating the closing of the wiper assembly.
  • the region wiped by the wiper assembly is provided for in respect of the adhesive coating on the one hand by the imprinter plate (in the toe region of the shoe) and on the other by the adhesive nozzles (in the adjacent region in the direction of the ball region). More particularly, adhesive is applied by the imprinter plate only in the region of the shoe toe in which the width of the shoe is not substantially altered for different shoe sizes. In the remainder of the region, which extends into the ball region and beyond, wherein changes in shoe size are rendered more strongly noticeable by changes in width, the adhesive coating is achieved by means of the nozzles, which can be guided in known manner, for example by sensing the lasting margin of the insole edge or by template or programmed control.
  • the latching member it is ensured that the nozzles are moved away from the imprinter plate sufficiently far that the wiper assembly can continue its movement unhindered. This is achieved by the sensor which is actuated by the nozzles and which unlatches the latching member by means of a signal.
  • the falling away of the imprinter plate can be controlled in different ways. On the one hand this can take place so that the "fall away" signal is supplied to the actuating means for the imprinter plate, at the time said signal is also supplied to the latching member. In this case, therefore, a relative early falling away of the imprinter plate takes place.
  • the control can also ensure that the unlatching of the latching member initiates the falling away of the imprinter plate. In this case the imprinter plate presses against the insole for a relatively long period, whereby the adhesive applied by the imprinter plate is then prevented from cooling at too early a time.
  • An additional degree of security with respect to the prevention of the collision of the wiper assembly against the imprinter plate is provided in that the initiation of the continuation of the movement of the wiper assembly as compared with the initiation of the falling away of the imprinter plate is delayed by a delaying member. In this way it is ensured that the continuation of movement of the wiper assembly is initiated only by the time span defined by the delaying member after the initiation of the falling away of the imprinter plate. This is especially of significance if, in the machine in question, the wiper assembly in its intermediate position is already close to the imprinter plate.
  • the starting position for the nozzles is located at a region to which adhesive is applied by the imprinter plate, the arrangement being such that the nozzles first engage the shoe bottom and the imprinter plate is moved into engagement with the shoe bottom only after the nozzles have moved away from said region.
  • the control for the nozzles need merely to be so constructed that, before bringing the imprinter plate against the insole, the nozzles have traversed a short region which is then, after the continuation of the movement of the nozzles away from the toe, also covered by the imprinter plate, which is brought into contact with the insole only after the continuation of movement of the nozzles.
  • the imprinter plate and the nozzles are connected to separate adhesive supplies each with different adhesive, an adhesive which remains elastic being supplied to the nozzles, while the imprinter plate has an adhesive which hardens off more strongly.
  • the latter adhesive normally also has the property that it hardens off more quickly, which is of special significance for rapid and reliable bonding in the toe region.
  • the method in accordance with the invention now to be described is a method of lasting shoes, more especially of lasting toe, forepart and side regions of shoes.
  • Conventionally the toe and forepart regions of shoes are today lasted by so-called pulling over and toe lasting machines, while the side portions are thereafter lasted by so-called side lasting machines.
  • the shoe to be lasted comprising a shoe upper on a last and an insole on the last bottom, is placed, bottom down, on a shoe support and the margin of the upper is located in a plurality of grippers arranged around the shoe support in conventional manner.
  • the upper is then tensioned over its last, again as is conventional, and a pair of wiper plates W, mounted for inwiping movement about a common pivot P located at or adjacent the toe end of the shoe, are brought into an intermediate position in which they trap the upper against the margin of the insole, the grippers at the same time releasing their grip and also a toe band being applied to press the upper against the last immediately above the wiper plates (again as described in EP-A 0,055,107).
  • the imprinter plate I extends from the toe of the shoe heelwardly approximately 50 mm (2''), as measured along the longitudinal centre line of the toe region of the shoe; that is to say, the plate I, and thus the region of the insole covered thereby, is substantially smaller than the region to be wiped subsequently by the wiper plates W.
  • the nozzles N are caused to move heelwardly, from a position adjacent the imprinter plate I, along opposite side of the shoe bottom (again as described in EP-A O,055,107); that is to say, the nozzles N are guided e.g. by computer control means supplying drive signals to suitable n.c. motors (as herein defined), in accordance with a set of digitized co-ordinate axis values stored in suitable memory means associated with the computer, such set being selected according to the style of shoe being operated upon and modified according to the size of such shoe. (This size may conveniently be measured by the movement of the heel rest against the shoe, as described in EP-A O,055,107).
  • the side lasting of the shoe can take place, in carrying out the method in accordance with the invention, using any suitable conventional means.
  • any suitable conventional means for example, as in the machine described in EP-A-0,055,107, lasting rolls may be used.
  • conventional lasting fingers or lasting bands may be used, in which case side lasting can take place only after the nozzles N have completed their movement.
  • the machine in accordance with the invention comprises a shoe support 10 which supports a last 9, on which an upper (not shown) is mounted with an insole 8 (see Figure 2) on the last bottom.
  • the last 9 is held at the heel and thereof by a heel support 48 which applies to the heel end of the last 9 a pressure which is accommodated by a toe abutment 49 engaged by the toe end of the last.
  • the abutment 49 is connected in known manner with a support column 50 carried by a piston 51 for heightwise movement of the support column 50, and thus of the last 9, to bring the latter into an operative position for lasting.
  • the column 50 also carries the shoe support 10 and also an imprinter plate 11 which, as will be described in detail hereinafter with reference to Figure 2 is movable to-and-fro by means of a piston-and-cylinder arrangement 21, 22.
  • the imprinter plate 11 is shown in a "fall away" position (also shown, in chain-dot line, in Figure 2).
  • the support column 50 is mounted on a frame portion 52 of the machine, as are also further elements, eg. a support 53 for pincers 54 for pulling the upper over the last 9 (further pincers are not drawn in for reasons of clarity) and a holder 55 for a stack of templates 56 which are sensed in known manner by a roll 57, and which serve to control the movement of adhesive-applying nozzles 34 (to be described hereafter).
  • a support 53 for pincers 54 for pulling the upper over the last 9 (further pincers are not drawn in for reasons of clarity)
  • a holder 55 for a stack of templates 56 which are sensed in known manner by a roll 57, and which serve to control the movement of adhesive-applying nozzles 34 (to be described hereafter).
  • Each nozzle 34 is mounted on the end of a carrier arm 58 which is connected via a piston rod 59 with a piston-and-cylinder arrangement 60, 61, for effecting heightwise movement of the nozzles 34 towards and away from the bottom of a shoe supported as aforesaid in the machine.
  • Each carrier arm 58 together with its piston rod 59 and piston-and-cylinder arrangement, is carried by an arm 62 which is mounted for swinging movement about an axis 63, a lever 64 connecting the arm 62 with a piston rod 65 of a further piston-and-cylinder arrangement by which swinging movement of the arm 62 is effected, thus to cause the nozzles 34 to track along side portions of the shoe.
  • the arm 62 is, furthermore, mounted for further swinging movement about an axis 66 in such a manner that the arm 62 can be pivoted out of and into the plane of the drawing.
  • the machine also comprises a wiper assembly 7, arranged about the toe end of a shoe supported by the shoe support 10.
  • the machine further comprises (schematically shown in Figure 3) an adhesive supply for the imprinter nozzles 34 and the imprinter plate 11.
  • the adhesive in the form of rods 67, 68, is unwound from rolls 69, a feed mechanism 70 being provided for this purpose.
  • the rods 67, 68 (shown interrupted for reasons of clarity) are supplied to inlets 71, 72 respectively of the nozzles 34 and the imprinter plate 11, whereupon they are heated in known manner so that flowable adhesive exits at the nozzles 34 and the imprinter plate 11.
  • the rods 67, 68 may be of different adhesive, appropriate to the different requirements of the regions of the shoe bottom to which they are to be applied.
  • a lasted shoe 9 which is held in its position (see also Figure 3) with the insole 8 thereof against the shoe support 10; the latter is so small that it remains in position even when the wiper assembly 7 effects its operation.
  • the imprinter plate 11 which substantially surrounds the shoe support 10 and comprises one or more channels 16 through which adhesive is supplied.
  • a wiper assembly 7 Adjacent the toe end of the shoe is disposed a wiper assembly 7 which is journalled in a mounting 5.
  • the mounting 5 is carried by a head 17 of a piston-rod 18 of a piston-and-cylinder arrangement 19, constituting drive means for the wiper assembly.
  • the piston-rod 18 extends through the piston 4 and projects from the other side thereof, carrying at its projecting end an abutment 1.
  • the abutment 1 moves therewith until it reaches the chain-dot position in which it engages a wedge 2.
  • the wedge 2 is supported on an actuator mechanism 3 by which the wedge 2 can be withdrawn from the path of the abutment.
  • the imprinter plate 11 is mounted on a piston-rod 20 forming part of actuating means constituted by the piston-and-cylinder arrangement 21, 22.
  • a drive control (which is known but not of interest in this connection)
  • the nozzles 34 starting from adjacent the imprinter plate 11 are moved along the insole 8 adjacent the lasting margin in a direction away from the imprinter plate 11, the nozzles 34 passing over substantially the ball region of the shoe 9.
  • each of the latter by means of a cam 35, engages a plunger of a valve 36 (constituting a sensor for the movement of its associated nozzle 34) so that, in the position shown in Figure 2, the valve 36 is switched by the nozzle 34 and thus pressure fluid from a source 37 is switched via line 38 to the latching valve 33.
  • the auxiliary valve 41 has not only the object of switching pressure from the line 43 to the line 44 and vice versa, but also exercises the function of delaying member, since the effect of the pressure fluid switched from the latching valve 33 is delayed in respect of its acting upon the actuator mechanism 3.
  • the pressure fluid supplied via line 39 in fact acts directly on the cylinder 22 and effects thereby the immediate falling away of the imprinter plate 11, in comparison with which the further movement of the wiper assembly 7, made possible by the actuator mechanism 3 in withdrawing the wedge 2, is initiated only after the valve 41 has been switched.
  • the switching time of the auxiliary valve 41 is enhanced.
  • line 73 (shown dotted) branching from line 32 connects line 32 directly with the input port 74 of the cylinder 22. If line 73 is utilised, line 39 is omitted.
  • a direct initiation of the falling away of the imprinter plate 11 is achieved by the "fall away” signal supplied via line 32; that is to say, when the "fall away” signal is supplied, when the abutment 1 engages the wedge 2 (actuation of the valve 30), the imprinter plate 11 immediately falls away.
  • the nozzles 34 may be moved away from the plate 11 sufficiently far heelwardly that they are clear of the wiper ends 47a and 47b before the wiper assembly movement continues as aforesaid.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Claims (6)

  1. Procédé pour monter des chaussures, à l'aide d'un adhésif, depuis le bout avant jusqu'au moins au-dessus de la ligne d'articulation ou de saillie des orteils, selon lequel la région du bout et de l'avant-pied de la chaussure est rabattue vers l'intérieur à l'aide d'une paire de plaques rabatteuses (W ; 7) montées pour un mouvement de rabattage autour d'un pivot (P ; 5) commun situé à l'extrémité, ou près de l'extrémité, avant de la chaussure, et dans lequel l'adhésif est appliqué en partie à l'aide d'une plaque (I ; 11) d'injection, qui est pressée contre le dessous de la chaussure, et en partie par des buses (N ; 34) mobiles le long de côtés opposés de la chaussure, procédé caractérisé en ce que la région à laquelle l'adhésif est appliqué par la plaque (I ; 11) d'injection s'étend sur environ 50 mm (2'') à partir de l'extrémité avant de la chaussure, la mesure étant effectuée le long de la ligne centrale longitudinale de la région avant de la chaussure, et ainsi se situe dans la région rabattue par ladite paire de plaques (W ; 7) rabatteuses, mais en étant nettement plus petite que la région rabattue.
  2. Procédé selon la revendication 1, caractérisé en ce que les buses (N, 34) appliquent l'adhésif en partant d'une zone voisine de la plaque (I ; 11) d'injection et en étant progressivement déplacées de cette zone vers l'arrière ou le talon de la chaussure.
  3. Procédé selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que l'adhésif appliqué par la plaque (11) d'injection est d'un type différent de celui appliqué par les buses (34).
  4. Machine à mettre sur forme et à monter pour mettre en oeuvre un procédé selon l'une quelconque des revendications précédentes, cette machine comprenant
       un support (10) destiné à supporter l'extrémité avant de la chaussure placée, le fond en bas, sur ce support,
       un dispositif (11, 34) destiné à appliquer l'adhésif sur le bas de la chaussure à partir de l'avant jusqu'au moins au-dessus de la ligne d'articulation ou de saillie des orteils, ledit dispositif comprenant une plaque (11) d'injection permettant d'appliquer l'adhésif sur le bas de la chaussure, dans sa région avant, et qui est pressée contre le bas de la chaussure pour maintenir la première contre le bas de la chaussure,
       un dispositif rabatteur (7) par lequel les parties marginales de l'empeigne à monter, s'étendant de l'avant jusqu'au moins au-dessus de la ligne d'articulation de la chaussure, sont rabattues par-dessus le bord de la première et pressées contre des parties marginales correspondantes de la première, pour effectuer une liaison par adhésif entre ces parties,
       et un dispositif de commande (1, 2, 30), qui arrête le mouvement du dispositif rabatteur (7) en une position intermédiaire dans laquelle le dispositif rabatteur (7) est juste passé devant le bord ou partie marginale de la première, le dispositif de commande (1, 2, 30) comprenant également un dispositif (30) de signalisation qui fournit un signal d'"écartement", qui effectue l'écartement de la plaque (11) d'injection en éloignant cette plaque de la première quand le dispositif rabatteur (7) est arrêté en sa position intermédiaire, machine caractérisée en ce que la plaque (11) d'injection du dispositif (11, 34) d'application de l'adhésif s'étend depuis l'avant de la chaussure vers son arrière sur approximativement 50 mm (2''), la distance étant mesurée le long de la ligne centrale longitudinale de la région avant de la chaussure,
       en ce que le dispositif (11, 34) d'application de l'adhésif comprend également deux buses (34) disposées pour opérer le long de côtés opposés du bas de la chaussure, en partant du voisinage de la plaque (11) d'injection et en se déplaçant progressivement vers l'arrière de la chaussure,
       et en ce que le signal commandant "l'écartement" est fourni à un élément verrouilleur (33) commandé par un détecteur (35), ce détecteur (35) étant placé de manière qu'après le déplacement des buses (34) au-dessus de la région qui est à rabattre par le dispositif rabatteur (7) et une fois que ces buses ont atteint une position permettant au dispositif rabatteur (7) de poursuivre son mouvement, le détecteur (35) déverrouille l'élément verrouilleur (33), en amorçant ainsi la fermeture du dispositif rabatteur (7).
  5. Machine selon la revendication 4, caractérisée en ce que l'écartement de la plaque (11) d'injection est amorcé par le déverrouillage de l'élément verrouilleur (33).
  6. Machine selon l'une des revendications 4 et 5, caractérisée en ce que la position de départ des buses (34) est située en une région à laquelle de l'adhésif est appliqué par la plaque (11) d'injection, l'agencement étant tel que les buses (34) viennent tout d'abord au contact du bas de la chaussure, et que la plaque (11) d'injection est déplacée pour venir au contact du bas de la chaussure seulement après que les buses (34) se soient éloignées de ladite région.
EP84300994A 1983-03-02 1984-02-16 Montage de chaussures utilisant un adhésif Expired - Lifetime EP0118243B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3307388 1983-03-02
DE3307388A DE3307388C2 (de) 1983-03-02 1983-03-02 Verfahren und Vorrichtung zum Zwicken von Schuhvorderteilen
US06/469,503 US4436771A (en) 1983-03-02 1983-03-02 Method of lasting shoes
US469503 1983-03-02

Publications (4)

Publication Number Publication Date
EP0118243A2 EP0118243A2 (fr) 1984-09-12
EP0118243A3 EP0118243A3 (en) 1986-02-12
EP0118243B1 EP0118243B1 (fr) 1988-06-22
EP0118243B2 true EP0118243B2 (fr) 1994-05-18

Family

ID=25808688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84300994A Expired - Lifetime EP0118243B2 (fr) 1983-03-02 1984-02-16 Montage de chaussures utilisant un adhésif

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EP (1) EP0118243B2 (fr)
BR (1) BR8401109A (fr)
DE (1) DE3472206D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69915028T2 (de) 1999-03-18 2004-09-16 Officine Meccaniche Molina & Bianchi S.P.A., Vigevano Maschine zur Herstellung von Schuhen
ES2261907T3 (es) * 2003-07-14 2006-11-16 OFFICINE MECCANICHE MOLINA & BIANCHI S.P.A. Maquina para la produccion de calzado.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579691A (en) * 1970-01-19 1971-05-25 Usm Corp Shoe lasting machines
US3995341A (en) * 1975-03-14 1976-12-07 Usm Corporation Shoe machine

Also Published As

Publication number Publication date
EP0118243A2 (fr) 1984-09-12
BR8401109A (pt) 1984-10-16
EP0118243A3 (en) 1986-02-12
EP0118243B1 (fr) 1988-06-22
DE3472206D1 (en) 1988-07-28

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