WO1994017714A1

WO1994017714A1 - Wiping material dispenser

Info

Publication number: WO1994017714A1
Application number: PCT/FR1994/000115
Authority: WO
Inventors: Maurice Granger
Original assignee: Maurice Granger
Priority date: 1993-02-01
Filing date: 1994-01-31
Publication date: 1994-08-18
Also published as: DE69407164D1; EP0681443A1; ATE160687T1; DE69407164T2; EP0681443B1; GR3026070T3; ES2112520T3; DK0681443T3; AU5973794A

Abstract

An apparatus including a housing (2) accomodating a reel for dispensing a wiping material, a drum (4) with a hinged cutting blade (5), and a protective cover. The drum (4) comprises a rod (4.1) with discs (4.3) some of which support the pulled paper web and have a peripheral channel (4.4) for accommodating the cutting blade (5). The end discs on said rod enable the positioning and hinging of the cutting blade. The rearmost disc is arranged to receive a rack member (7) fixedly fitted to the flange opposite the housing. The cutting blade (5) is provided at one end opposite the rack member (7) with a shaped lug (9) with a plurality of teeth forming a complementary rack for engaging a plurality of teeth (7.3) forming said rack member (7) when said drum is rotated. An abutment (10) is provided for moving said cutting blade along a path in the opposite direction to the drum rotation direction once the drum has partially rotated to enable cutting of the paper web. It comprises an operating device (40-6.5) enabling the wiping material to be fed out of the apparatus so that a user can grasp and pull it. The apparatus may operate semi-automatically.

Description

APPARATUS FOR DISPENSING WIPING MATERIALS

The invention relates to the technical sectors of devices for dispensing wiping paper, cellulose wadding, crepe paper or similar materials, intended more particularly for wiping the hands of users.

There are very many manual, semi-automatic, automatic wipers which fulfill the above-mentioned function. The Applicant has, in particular, developed several apparatuses of this type, for central unwinding, for folding the strip of material in the form of accordion folds, and also in an automatic paper dispenser, using a cutting, integrated in a drive drum. All these devices are commonly operated, having high reliability in their operation. Depending on their constitution, these i5different devices have very variable cost prices from each other, and are adapted to different market segments.

As part of his personal research, the Applicant was interested in designing a new device including, in its architecture, a reduced number of parts to be able to address ²⁰ market towel devices low cost price, semi-automatic.

According to a first characteristic, the device for dispensing wiping material is intended in particular for wiping

₂₅ hands of the type including a casing allowing, by its wings profiled side panels, the positioning of a reel for supplying wiping material, a drum receiving an articulated cutting blade and a pressure and paper tensioning means, as well as a protective cover for all of the mechanisms, the pulled strip of paper coming to bear on the drum while being guided at the rear of the latter with a view to cutting it, characterized in that the drum made in one piece comprises a shaft around which is disposed a plurality of adjacent and parallel disks comprising intermediate disks of the same configuration serving as support for the strip of pulled paper, and having on their periphery a notch for positioning and housing the cutting blade in the rest position, said shaft receiving a first front end disc and a second rear end disc allowing the positioning and articulation of the cutting blade, and in that the rear end disc is arranged é with a means defining an interior chamber for the reception of a rack means adapting to a fixed position on the wing facing the casing, and in that the cutting blade is arranged at one end facing the means with a profiled heel comprising a plurality of teeth forming a complementary rack capable of cooperating, during the rotation of the drum, with a plurality of teeth constituting a fixed rack formed on the means, and in that a stop means ensures, after the rotation partial of the drum for the operation of cutting the paper strip, the re-engagement of said cutting blade along a trajectory opposite to the direction of rotation of the drum, in the notches formed on the latter, during the complementary rotation of the drum in view of the presentation for a new cycle and in that the rotation of the drum is obtained by means of a means ensuring the feeding of the strip of paper towards the drum and its tensioning by a semi operation

-automatic, and in that it comprises an operating means allowing the wiping material to exit from the device with a view to its gripping and traction by the user under the support action of the user.

To fix the subject of the invention, illustrated in a nonlimiting manner in the figures of the drawings where:

FIG. 1 is an exploded perspective view, before assembly, of an apparatus, according to the invention, with semi-automatic operation,

FIG. 2 is a front view of the device according to FIG. 1 after assembly, the protective cover having been removed, in the non-operating phase,

FIG. 3 is a cross-sectional view along the line A.A in FIG. 2,

FIGS. 4, 5 and 6 are large-scale views illustrating the different phases of positioning of the rack associated with the blade relative to the rack with fixed position integrated in the drive drum,

- Figure 7 is a schematic view illustrating the path of the cutting blade, according to a rotation cycle of the drum,

FIGS. 8 and 9 are diagrammatic views illustrating a means of controlling the position of the blade holder in the drum, according to the operating cycle,

FIG. 10 is a partial view, on a large scale, illustrating the positioning of the lower part of the protective cover relative to the drum,

FIG. 11 schematically illustrates the position of attack of the paper by the cutting blades,

FIG. 12 is a side view illustrating more particularly the end disc (4.3.7) formed on the drum with a complementary non-return stop means,

FIG. 13 is a diagrammatic view, in section, of the improved device according to the invention, illustrating the casing in the open position,

FIG. 14 is a view according to FIG. 13, the casing being in the closed position,

FIG. 15 is a large-scale view illustrating the particular implementation of the control wheel associated with the means (6) ensuring the supply of the strip of drum paper,

- Figure 16 is a partial view illustrating the drum (4), with in particular the use of a retaining stop for the paper strip,

FIG. 17 is a view of an alternative embodiment of the retaining means described in FIG. 16,

FIG. 18 is a plan view of the device, with the cover removed, illustrating in particular other improvements of the invention,

- Figure 19 is a schematic side view of the device, showing a device, ensuring the pre-exit of the wiping paper from the device, the device being illustrated, in the rest position, the paper wiping not having come out,

FIG. 20 is a view similar to FIG. 19, illustrating the position of the device allowing the partial removal of the wiping paper,

FIG. 21 is a view, according to FIG. 20, illustrating, after traction of the end of the paper strip, by the user, the position of the device, according to the invention, in the lifting phase,

FIG. 22 is a view, according to FIG. 21, illustrating the position of the device, object of the invention, in the final phase of pulling the end of the strip of paper corresponding to the instantaneous cross section of the latter,

- Figure 23 is a view of the exterior of the apparatus, on a large scale, partial, illustrating the device authorizing the prior exit of the paper strip, in a rest position,

FIG. 24 is a view of the interior of the apparatus, on a large scale, partial, illustrating the device authorizing the prior exit of the strip of paper, in a rest position,

FIG. 25 is a plan view of the device, with the cover removed, illustrating in particular other improvements of the invention,

FIG. 26 is a schematic side view, according to the control wheel of the apparatus, and illustrating the elastic mounting of the means for feeding the paper strip,

FIG. 27 is a view in axial section from the other side of the apparatus intended to illustrate the operation of the cutting device,

FIG. 28 is a view in axial section along the line B.B. in FIG. 25, from the central zone of the apparatus,

FIG. 29 is a view in axial section along the line C.C. of FIG. 28,

FIG. 30 is a large-scale view illustrating the means of feeding the strip of paper to the drum,

- Figure 31 is a side view of the drum illustrating in particular the anti-tilting stop means of the gear member associated with the feed roller from the paper web to the drum.

In order to make the object of the invention more concrete, it is now described in a nonlimiting manner in the figures of the drawings.

The apparatus according to the invention is suitable for the distribution and cutting of wiping materials of all suitable materials, cellulose wadding, crepe paper and the like, being intended mainly for wiping hands, in semi operation - Automatic or automatic, and has a common arrangement, at the level of the drum, of the blade device for cutting the strip of material treated, as well as in the particular path of the blade for cutting the paper.

For convenience, it will first describe the version of the device in semi-automatic operation.

The dispensing device is illustrated in FIG. 1 and is referenced as a whole by (1). It includes restrictively six parts constituting all of the components and mechanisms necessary for its operation. The apparatus firstly comprises a casing (2), molded in plastic material, capable of receiving a reel (3) for supplying wiping materials, a drum (4) supporting the blade (5), as well that a means (6) ensuring, on the one hand, the supply of the paper strip to the drum, and on the other hand, the tensioning of the paper. The movements of displacement of the blade towards the drum, with a view to cutting the paper, are obtained by a rack means (7), positioned fixedly on one of the wings (2.1) of the casing (2). A protective cover (8) protects the aforementioned mechanisms and the strip of paper on reel, intended to be distributed. The protective cover is positioned by a labeling on the casing and their junction makes it possible to define, in the lower part, a longitudinal slot for the passage of the paper. The six aforementioned means are integrated into each other by simple labeling, to the exclusion of any connecting means of the screw or other type.

We will now describe each means, taken separately, having their own characteristics.

The casing (2) is made in one piece, made of plastic, and comprises a bottom plate (2.2) having lateral wings (2.1a - 2.1b) profiled to form, in their upper part, triangular projections (2.3) having opposite and directly formed end caps (2.4), cylindrical, allowing the assembly of the material reel (3). The latter comprises, in known manner, an inner cylinder or sleeve (3.1) capable of coming to engage at its ends on said free-mounting end pieces. Said wings have a slight flexibility to allow mounting of the coil. There are also provided reinforcement ribs (2.5) formed between the end pieces and the bottom plate (2.2) of the casing, these ribs making it possible to maintain and maintain good positioning of the turns between them of the coil. The bottom plate has, in its upper part, a profiled hook (2.6) or equivalent means, intended to snap onto the cover, to ensure closure of the assembly, this being supplemented by any additional locking means if necessary.

Advantageously, the bottom plate has a cutout (2.7) allowing, if necessary, access to the interior of the mechanisms.

The lower part (2.1c) of the wings of the casing extends forwards over a wide depth, thus corresponding very substantially to the width of the device. These wings are arranged with a plurality of holes to allow, on the one hand the positioning of the drum associated with the cutting device, of centering studs, of the fixed-position rack means (7), and on the other hand of the means ( 6) supply of the strip of materials and tensioning thereof. Advantageously, said lower part of the wings of the casing has a cutting line (2.1 d) to give flexibility, on the one hand, to the mounting of the means (6) and above all to allow a slight deformation to accompany the tensioning movements. and press the paper onto the drum.

The casing has, in addition, a horizontal wall capable of receiving directly formed a hoop (2.8) in the form of a swan neck disposed in the middle part of the apparatus facing the drum and authorizing the guiding of the drawn strip of paper. The guide arch (2.8) formed on the casing has at the end a yoke shape (2.8.1) which is capable of engaging around the median disc (6.3) formed on the means (6) for feeding the drum. . This arrangement makes it possible to control the position of the supply means (6) relative to the drum so that the respective discs are perfectly facing and in support of each other.

Advantageously, the horizontal wall has, on the outside, a rounded longitudinal border (2.9), facilitating the guiding of the paper at its exit, and disposed opposite a similar rounded longitudinal border (8.1) formed on the cover in the lower part of the protective cover.

The drum (4) is made as a single piece of plastic material and advantageously comprises a shaft (4.1) whose ends (4.2), forming a finger, engage in the openings made opposite the aforementioned wings of the casing. This drum comprises a small diameter shaft around which is disposed and regularly distributed a plurality of adjacent and parallel discs (4.3) identified successively from right to left by looking at the drawings by (4.3.1, 4.3.2, 4.3.3, 4.3 .4, 4.3.5, 4.3.6, 4.3.7). The discs (4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.3.6) have the same configuration and have on their periphery a profiled notch (4.4), capable of constituting the housing of the cutting blade ( 5) as will be explained later. The disc (4.3.1) is full and advantageously has a notch on its periphery (4.3.1 a), and is capable of ensuring the drive in rotation of the drum under the action of the means (6) which will be described thereafter. The front end disc (4.3.1) further comprises a hole (4.3.1b) allowing the engagement and centering of one end of the axis of the blade (5). The rear end disc (4.3.7) comprises a hole (4.3.7a), near its periphery, allowing the positioning and centering of the other end of the blade. The rear end disc (4.3.7) is particular in that it comprises an inner peripheral flange, disposed opposite the adjacent intermediate disc (4.3.6), this flange (4.5) defining an interior recess or chamber (4.5.1) for the. reception of the rack means (7). This flange also has a cut section (4.5.2) in the same plane as the notches (4.4) used to house the blade to facilitate molding of the assembly, said cut section allowing, transversely, according to a given sector, access to the interior of the aforementioned room, under the conditions set out below. Said chamber allows the positioning of the rack means (7) which is established in the form of a crown (7.1) adjusting, with play, in said chamber. This crown has, on the outside, two studs or projections (7.1.1 - 7.1.2) for centering, preferably of different diameter, to engage in the openings formed for this purpose, on the inner wing opposite the casing, to ensure easy installation and control in position. The other face of the crown is shaped with a semi-circular boss (7.2) extending with a plurality of teeth (7.3) forming a rack. On the set of teeth making up the rack (7), for example, the first three teeth (7.3.a) are of constant profile while the other four following (7.3.b) are of progressive profile to subsequently cause the movements of the cutting blade. In a particularly advantageous manner, the last tooth of the rack has a greater height than the others to allow the escape of the cutting blade and good penetration into the paper strip. This last tooth also constitutes, as will be explained below, a non-return stop means when the cutting blade has escaped from the assembly. teeth (7.3) of the rack thus produced, to follow the periphery of the boss (7.2) for a new operating cycle, and represent itself towards the first tooth formed on the boss (7.2). This last tooth of greater height offers another advantage which is to break the paper by orienting the blade more deeply.

The blade (5) is made of one-piece plastic material and comprises a support rod (5.1), the ends of which form a finger (5.2), engage on the end discs of the aforementioned drum. The teeth (5.3) of the cutting part forming the blade (5) are formed in one piece with the support rod. These teeth have a profile in successive triangulation, and have a conformation not smooth, but curved downward to facilitate the attack of the strip of material to be cut. As a result, their underside has a concavity, capable of forming a seat (5.4) and a support zone for the part of cut material, as it appears in the drawings. Depending on the nature of the paper to be cut, the teeth of the blade are smooth or sawtooth.

The blade has at its end, which is capable of facing the rack means (7), a piece forming a heel (9) profiled. The latter has a rear part (9-.1) in triangulation, with a rounded joining angle (9.2) and two curvilinear edges (9.3 - 9.4) opening towards the widest part of said heel which is shaped with a plurality of teeth (9.5) forming a rack, said teeth being arranged in progressive separation with respect to the axis of the blade, the leading tooth (9.5.1) being of greater height to ensure engagement. This piece forming a heel is integral with the axis of the blade, but in an eccentric position, so as to cause the angular pivoting of the blade and of the part itself according to a limited position. This pivoting allows the teeth of the blade to be housed inside the cavities formed on the intermediate discs of the drum, in a maximum fold-back position, said blade being in a plane below the generatrix defined by the discs of the drum. The external overflow of the teeth of the blade is limited by the abutment of the teeth with respect to said notches. As will be described below, the rack formed on the heel associated with the blade is capable of cooperating with the fixed rack formed on the means (7) to cause, under given conditions, the displacement and the exit of the cutting blade. Thus, by the particular arrangements of the teeth formed on the part (7) and the heel (9) with progressive toothing, one obtains a displacement of the cutting blade at a progressive speed. The first meshing teeth correspond to the phase of the greatest effort when the teeth of the blade penetrate the paper. After the paper has been penetrated, the cutting edge begins and the effort becomes less. The cutting speed is accelerated by pulling on the paper, and a greater reduction is obtained by the fact that the teeth are larger, which allows faster cutting.

There is illustrated, in an advantageous alternative embodiment, figure

12, a side view illustrating more particularly the end disc (4.3.7) formed on the drum with a second means of additional non-return stop (4.3.7c). Said means is formed, during the production of the disc concerned, and is in the form of a flexible tongue, free at one end, this tongue forming a cam and coming by elastic relaxation in slight external overflow relative to the periphery of the disc . This tongue is located opposite the axis of rotation of the blade and intended to come to a stop on the stop (10) formed on the horizontal wall of the casing. The advantage of such a complementary non-return stop lies essentially in the case where, by appropriate manipulations of the manipulator, the paper would be torn before cutting. This could occur in the case of a violent oblique pull but not corresponding to the normal use of the device. When the cutting blade has exceeded, after rotation of the drum, the pressing means (6), the non-return tab (4.3.7c) is located in front of the stop (10), and in the event of rotation behind the drum, the tongue comes into contact with the abovementioned stop, stopping the rotation of the drum.

We will now describe the means (6) which supplies the strip of paper to the drum and the tensioning of the paper.

This means (6) comprises a shaft (6.1) having at each of its ends centering fingers (6.2) for snapping between the lateral wings of the casing of the device. On this shaft, is arranged a plurality of discs or washers (6.3), the assembly being a single piece of plastic. The number of discs or washers is twice the number of intermediate discs formed on the drum. Thus, after positioning and labeling the means (6), a certain number of discs (6.3a) will come in support on the intermediate discs (4.3.2 - 4.3.3 - 4.3.4 - 4.3.5 - 4.3.6) formed on the drum, while the other intermediate discs (6.3. b) will be located in an intermediate plane between two discs (6.3.1) formed on the drum. The assembly will contribute to ensuring a tensioning of the paper. Alternatively, the tree (6.1) can be solid or otherwise lightened.

The means (6) has, at one end which is opposite the rack device, a disc (6.4) of larger dimension, forming a handwheel. This disc (6.4) is capable of being positioned between the end disc of the drum and the wing opposite the casing. This flywheel disc advantageously has a notch on its periphery (6.4.1). In addition, the flywheel (6.4) has adjacent to its internal face, a notched cylindrical shoulder (6.4.2) of complementary diameter identical to those formed along the shaft (6.1) to bear on the first disc produced on the drum, in order to ensure, after manual intervention on the handwheel, the rotation of the drum. The handwheel, after labeling and mounting the protective cover (8) extends substantially beyond the latter to be pushed manually by the operator.

Before exposing the operation of the apparatus, it is necessary to describe specific additional means which have an effect on the positioning of the cutting blade, during the rotation of the drum, thus defining, for the latter, a very particular. These two means are arranged on the side of the rack devices controlling the output of the cutting blade. In its lower part, the wall casing (2) has, on its horizontal wall, near the lateral wing, opposite the rack means, a profiled stop (10), with a curvilinear profile forming a ramp, against which will come in support the profiled heel (9), associated with the blade (5) and support for the teeth (9.3) of the rack. This stop (10) intervenes to cause, after the cutting operation and disengagement of the racks therebetween, the reintegration of the cutting blade into the notches, formed on the intermediate discs of the drum.

Due to its ramp-shaped profile, said stop causes the blade to tilt according to the arrow (F2) in a direction opposite 0 to the direction of rotation of the drum by causing it to be stored in the aforementioned notches.

In addition, there is provided an additional means of controlling the position of the cutting blade in the notches formed on the drum ₅ or alternatively ensuring a locking in position of the cutting blade before the start of a new operating cycle. .

For this purpose and in a first implementation, there is provided, on the means (6) ensuring the rotation control of the drum, and the pressure on the paper, an additional disc (11), at the end 2 ^Q Judit means (6), and disposed in the plane of movement of the heel piece (9) of the blade. This complementary disc (11) has the function of acting as a stop and guide, if for any reason, the blade is in an exit position, relative to its recesses in the housing on the drum. The rotation of the drum will cause the heel piece (9) to stop by one of its curvilinear parts, against the aforementioned disc (11). The complementary rotation of the drum will therefore cause the pivoting and tilting downwards (arrow F3) of the piece forming the heel, causing the blade to re-enter again in the notches formed on the drum, thus avoiding teeth of the blade can come into contact with the means (6). This particular provision provides additional security.

Alternatively, the boss (7.2) formed on the rack means (7) has an external offset (7.4) which constitutes a stop means ₀ and blocking in the heel position (9) associated with the blade causing during the return of the blade blocking it in the aforementioned notches of the drum.

The protective cover (8) has, in the lower part of its wings, openings allowing it to be snapped onto the wings of the support casing using the fingers or projections (12) for centering and positioning. Said casing is, moreover, shaped in its bottom part with a wall (8.2) capable of coming opposite the horizontal bottom wall of the casing, but leaving a space or slot to allow the paper to exit the device. . The front of the protective cover has a vertical slot (8.3)

20 for the passage of the handwheel of the means (6).

In addition, and in a particular arrangement, the bottom part of the protective cover has a plurality of parallel projections (8.4) formed as a single piece and obtained during the molding of the cover, ₂ these projections being intended to come opposite the intermediate discs of the drum, penetrating substantially into the recesses (5.5) of the blade, during rotation of the drum, and thus in the bottom portions of the teeth of the cutting blade. The main purpose of these projections is to ensure better guidance of the material drawn. To avoid any discomfort during the operation of the device, recesses (5.5) have been formed on the blade support rod to allow proper operation of the assembly. It is therefore necessary to describe the operation of the semi-automatic device, with particular reference to Figures 4 to 7 of the drawings.

The device being loaded with a reel of material mounted on the end caps, on the lateral wings of the casing, the device is loaded beforehand. After the initial opening of the protective cover by tilting, the operator presents the free end of the reel of material between the means (6) and the drum (4) and manipulates, for a few degrees, the handwheel so to cause the strip of material to be drawn between the drum and the means (6) and its exit from the rear of the device, without, however, opening and leaving the latter through the appropriate slot. The strip of material is kept in tension by the plurality of discs formed on the drum and on the means (6). The one-piece swan neck arch, formed on the housing, ensures, as a complement, if necessary, the guiding of the paper. This prior loading establishment being carried out, the cover of the device is closed, and the device is ready to be used. At this stage, the blade is completely housed in the notches formed on the drum. There is still no engagement of the rack formed on the blade with the fixed position rack formed on the means (7), housed in the chamber of the last drum disc.

The operational cutting phase is as follows. The end of the paper strip is still located inside the machine in an area corresponding to the rear of the drum towards the swan neck part. The operator manually turns the handwheel, in the direction according to the arrow (F), which causes, by the rotation of the means (6), the rotational drive, in an opposite direction of the drum, in the direction of inside the housing. At the start of the cycle, the blade is placed inside the notches, leaving a space of a few millimeters relative to the fictitious generator formed by the intermediate discs of the drum before opening. The beginning of the rotation of the drum will cause, under the action of the means (7 and 9), a displacement of the blade of a few millimeters so that, when the first tooth of each of the means (7 and 9) has meshed , these latter teeth lie in the plane defined by the axis of the blade and the axis of the drum. In this situation, the cutting blade is located at the start of contact with the paper to be cut (Figure 11).

The progressive rotation will allow the presentation of the first respective teeth formed on the rack associated with the blade and the fixed rack of the means (7). The end of the strip of material comes out of the slot formed on the device, and can be grasped by the user. The latter then pulls causing the drum to rotate, thereby ensuring the continuity of the cutting operation. The blade, by the teeth of the two racks, will be pivoted to exit and cut the strip of paper, as a result of the teeth of profile progressive. The teeth come out at the rear of the device and the strip of material will be torn gradually, the blade pivoting in the notch formed between the intermediate discs of the drum. The total output of the blade will correspond to the exhaust and meshing of the last two teeth with the racks, the last tooth formed on the fixed rack causing the maximum output of the blade.

After the teeth of the racks have escaped from one another, during a moment of instantaneous rotation of the drum, the blade remains in the "out" position, the piece forming the heel no longer being in contact with the support disc of the rack in a fixed position.

The reentry of the blade is then effected by the abutment and contact of the piece forming the heel of the blade with the curvilinear stop fixed on the bottom wall of the casing. This curvilinear part forming a ramp causes, by an opposite effect, the tilting and re-entry of the blade into the notches formed on the discs of the drum. The pivoting of the blade ipso facto causing that of the piece forming the heel, the latter is tilted without making contact with the fixed position disc of the means (7). When the part forming the heel comes into the situation of escape from the curvilinear stop, the teeth of said part forming the heel then come to face the entry zone of the teeth formed on the fixed disc, for a new cycle. until the beginning of the meshing of the first teeth of the racks.

If, for any reason, the blade comes off notches formed on the intermediate disc, causing the heel piece to overflow, associated with the blade, the continuous rotation of the drum then brings said heel piece into contact with the abutment disc formed at the end of the means ( 6), which in turn causes the blade to be withdrawn and reinserted into its housing defined by the notches on the intermediate discs.

As a variant, the maintenance and blocking in position of the blade in the notches in the second phase of the operating cycle of the drum return corresponding to the intervention of the curvilinear stop (10), are obtained by blocking said blade to the using the additional shoulder formed on the boss (7.2) which causes the blade to be retained in the notches of the drum. Unlocking takes place when the heel (9) associated with the blade takes up a new position for presenting its teeth with those formed on the means (7).

There is therefore total security in the operation of the assembly. The semi-automatic device, thus described, comprises a limited number of parts, six as indicated above, but each having multiple functions as it appeared in the description.

There is shown in Figure 7, schematically, the path (T) of the cutting blade.

Various complementary arrangements of the apparatus will be explained below. According to a first arrangement, illustrated in FIGS. 13 and 14 of the drawings, the casing (2) is arranged with a hinged cover (8) whose inner face (8.1) is arranged with an overhanging projection (8.2) established in a perpendicular plane, said projection being disposed horizontally at a level such that it comes opposite the zone of engagement of the paper between the means (6) and the drum (4). The purpose of this projection is to guide and present the first strip of material to be distributed during loading, to facilitate its introduction between the pressing means (6) and the drum (4). Said projection therefore comes to be flush with the space formed, at the introduction of the paper between the means (6) and the drum (4). This arrangement is particularly practical and does not generate any additional manufacturing costs when the cover is produced.

According to another important characteristic of the invention, the prior exit from the strip of wiping material must be able to be carried out, in an easy manner, over a few centimeters, this in the case where the user cannot handle by the hand the handwheel. In this case, in a first implementation, the handwheel (6.4) of the aforementioned type projecting from the outside of the cover, has a cross shape (6.5) or any other polygonal section having an alternation of cavities (6.6) with protruding shapes. These cavities are such that they allow the positioning of the forearm of the user who can, then, by a lowering movement, cause the rotation of the steering wheel and therefore of the associated drum, ensuring the exit of the strip of material, for later grabbing by hands by the user.

According to another arrangement, in this implementation, provision is made for the formation, on one of the discs of the drum, of a slight boss (34) which, in cooperation with said disc facing the means (6), ensures a temporary zone of tension of the paper strip by pressing with the means (6) to facilitate the tearing of the pulled paper strip. As a variant of this latter arrangement, it is provided that the engagement of the drum with the means (6) is effected by two serrated discs formed respectively at the ends of the drum (4) and of the means (6), as illustrated in FIG. 19. The two discs are arranged at one end of the body of the device, as described in the initial patent application. To facilitate the separation of the paper strip, one (35) of the teeth is longer than the others to provide a counter-support zone.

In the two situations of use of a boss, or a tooth, to facilitate the separation of the paper strip, their position is particular and determined with respect to the cam cooperating with the rod and the operating means. This position is such that the longest cam or tooth is located, to be opposite the means (6) for tensioning the paper strip, before any action on the operating means, and when the spout of the cam is in contact with the heel of the link. The paper is in this position right out of the machine, as it appears in the drawings, and does not overflow yet. The operation on the operating means will therefore allow the paper to exit and cause the paper strip to be tensioned by the retaining effect. given by the boss or by the particular tooth, causing its tearing.

In this implementation, the cam ensures, by the fact of complete rotation of the drum, the lifting of the operating means.

According to another important arrangement of the invention, a device is used, referenced as a whole by (40) intended to allow the paper strip to be taken out of the device beforehand, with a view to gripping and pulling it by the user. This device is profiled, bent with two branches, formed as a single piece having a part forming a lever (41) projecting outside the device, to be manipulated by the operator, and extending by an arm (42) inside. of the device, to ensure the partial rotation of the drum, according to a determined sector to allow the exit over a few centimeters of the paper strip. Said arm (42) is located in a plane parallel to said lever, and is arranged at its end with a form in a serrated sector (42.1) capable of cooperating with a rack (44) disposed on the axis of the drum (4) receiving the cutting tool. In this one-piece assembly, between the lever part and the arm part, there is provided, in the angled connection zone (43), a gap (45) allowing the passage of the corresponding side wall of the casing (8), the latter having , at the rear, a passage opening (46) of the bent part of the device. Said lever (41) has, in its rear part, a perpendicular extension forming an elbow (43.1), substantially horizontal, with itself a vertical extension (43.2) defining, by an appropriate shape, the articulation zone (43.3) of the device. More specifically, this articulation zone is arranged with two opposite centering studs (43.4) capable of engaging in openings formed on the one hand in the lower part of the side wall of the corresponding casing, and on the other hand, on an attached flange (47), disposed opposite, to form a fork shape allowing the articulation of the aforementioned device. The arm part is established from this articulation zone and extends forward in the same plane as the lever. It has a profiled front end in the thickness of which is made in one piece on the one hand, a shape in angular sector, serrated (42.1), and on the other hand, a particular rib (42.2) forming a ramp to cooperate with a cam (48) profiled arranged on the axis of the drum (4), the serrated part (42.1) cooperating with the rack (44) arranged on the axis of the drum.

The end of the arm thus has a serrated angular sector, with several teeth (42.3) of equal toothing, as well as with an end tooth (42.4) situated in the same plane as the above-mentioned ramp part. In the end thickness of said arm adjacent to the serrated sector, there is provided a rib (42.2) of great length disposed in a plane inclined with respect to the aforementioned serrated sector. This ribbing defines, on its front part, a ramp shape capable of cooperating, as will be described later, with a cam shape disposed on the axis of the drum. The angular position of the ribbing, relative to the teeth, is judiciously established to allow, after the exit for a few centimeters from the strip of paper, the lifting of the lever. In its thickness, the arm part has a lightening opening (42.5). The drum has, from its axis of rotation, overflowing, the aforementioned cam (48), as well as a rack (44) comprising several teeth. Said cam has a particular profile with a flattened "S" shape. This is defined with a first semi-circular half-part (48.1) against which the above-mentioned rack is positioned, and a second semi-elliptical part (48.2) arranged opposite. The junction of the two circular and elliptical half parts with respect to each other is established with a straight profile (48.3) on one side and a curved profile (48.4) forming a ramp on the other side. The shape of this cam thus defines a particular path which cooperates with the aforementioned rib (42.2), under the following operating conditions, with reference to FIGS. 21 to 26.

The wiping roller apparatus being loaded, the device is in the rest position, that is to say that the lever (41) is in the horizontal position so that it can be manipulated by an operator. The wiping paper has not come out. The rack (44) mounted on the axis of the drum meshes with the first teeth of the serrated sector of the arm (42), while the profiled cam (48) in "S" is located in a plane oriented downwards, the shapes in "S" being substantially vertical. The ramp part (42.2) of the arm projecting at the end, forming a spout (42.6), is raised upwards in the position of maximum distance from the profile of the cam. The downward actuation, according to the arrow (F1), on the lever, as illustrated in FIG. 22, will cause a cooperation effect of the serrated sector of the arm and of the rack mounted on the axis of the drum, the rotation partial of the latter, allowing the exit a few inches from the paper strip. In this phase, the "S" shaped cam fixedly mounted on the drum has taken on a new orientation corresponding to the partial rotation of the drum, and is situated in a plane such that the rib part of the spout arm comes to bear on the part curvilinear (48.4) of the ramp. The teeth of the rack and the toothed sector formed on the arm are no longer engaged.

According to FIG. 23, the user has shown the traction of the strip of outgoing material. This traction will cause the complementary rotation of the drum, and therefore the overflow of the paper strip. During this movement, the fixed cam (48) mounted on the axis of the drum will pivot according to the arrow (F2) and cause, due to its curvilinear profile, by constant support on the spout (42.6), the lifting of the device constituted by the arm (42) and the lever (41). In this situation, the rack part (44) and the toothed sector of the arm are distant from each other, which thus allows, by a release, the easy lifting of the arm-lever assembly.

According to Figure 24, there is shown the position of the device comprising the arm and the lever in their respective position relative to the profiled cam and rack arranged on the axis of the drum. This representation corresponds to the moment of cutting of the paper strip by the cutting device introduced and positioned in the drum, as described above. In this operating phase, the lever part (41) is raised to the maximum and the arm part (42) comes into contact with a stop (49) fixed on the side wall of the casing to limit its movement. The cam (48) profiled in "S" then has a position substantially horizontal, and the rectilinear part is also horizontal. The first teeth of the rack and the toothed sector of the arm are opposite each other ready to mesh. At the end of traction and after cutting the paper strip, the lever returns to its initial position as illustrated in FIG. 2, the rack and the toothed sector being engaged. When passing into this rest position, the start of meshing of the teeth of the rack with the toothed sector of the arm is obtained.

The implementation of this device is particularly advantageous in that it simplifies the assembly of the assembly. In addition, the operation of the device including the lever is easy to implement.

Another improvement relating to the apparatus resides in a substantially modified embodiment of the means (6) for feeding the strip of material to the drum (4), and which is illustrated in particular in FIGS. 27 and 32, making it possible to improve the distribution of the strip of material, whatever the directions of traction at the end of the strip by the user. To do this, the means (6), comprising a shaft (6.1) and a plurality of discs (6.3) intended to be in relation to the discs (4.3) formed on the drum, is established to offer a certain flexibility by deformation by report to said drum, and secondly by ensuring successive styling of the strip of material when it is in contact between the means (6) and the drum (4) during dispensing.

According to a first feature, it is provided on either side of discs (6.3) to have complementary discs (6.5) which have a diameter (D1) substantially greater than the diameter (D2) of the discs (6.3). Thus, when the discs (6.3) are in contact and taken with the discs (4.3) formed on the drum, the complementary discs (6.5) have a slight tendency to penetrate the material in the intervals formed between the successive discs of the drum creating styling (Figure 27) or successive undulations resulting in better tensioning of the paper transversely to facilitate cutting. The complementary discs (6.5) have a smaller width than that of the discs (6.3).

According to another particularity, the discs (6.3) of the means (6) for feeding the paper strip of the material are produced with a decreasing diameter from the central central disc, at an angulation α identical on each side. This reduction in diameter of the various discs (6.3) is achieved by a tapering of a few tenths of a millimeter from the diameter of the consecutive discs. The means (6) which is snapped between the lateral wings of the casing can thus be substantially flexed during assembly, although the discs in relation to each other with the drum remain in contact. In addition, the drum (4) can itself, on its shaft between certain discs (4.3), be fitted with notches or weakening zones (4.6), preferably obtained by a reduction in diameter to allow it to offer a certain flexibility in combination with that obtained by the above-mentioned means (6). Thanks to these particular arrangements, a flexible mounting of the means (6) on the drum (4) and better paper tension for cutting.

Furthermore, some of the peripheral surfaces of the discs (4.3) can be fitted with gripping zones (4.7).

According to another characteristic, to facilitate the distribution of the material, and more particularly its exit below the protective cover, it is planned, on the drum, to add complementary discs (4.8) between the existing discs by forming projecting zones (4.9) with respect to the tangential generator of the aforementioned discs (4.3). These protruding areas (4.9) are established more particularly by being adjacent to the notches (4.4) receiving the cutting blade support formed on the disc. These protruding shapes are arranged alternately between the discs (4.3) coming into contact with the discs (6.3) of the means (6), they thus pass in the intervals appearing between the complementary discs (6.5) formed on the means (6). during the rotation of the drum. The purpose of these projections is to facilitate the exit of the paper at the lower end of the cover.

According to another characteristic to reduce the operating noise of the device, it can be arranged on some of the discs of the drum, and / or of the pressing means (6), rods damping in elastomer or equivalent allowing smooth operation of the apparatus.

The advantages emerge clearly from the invention. We highlight the new concept of the device, its rapid assembly and its perfect adaptability to semi-automatic operation.

Claims

-1 - Device for dispensing wiping material intended in particular for wiping hands and toilet paper, of the type comprising a casing (2) allowing, by its profiled lateral wings, the positioning of a material supply coil 'wiping, of a drum (4) receiving an articulated cutting blade (5) and of a presser and tensioning means for the paper, as well as a protective cover (8) of all the mechanisms, the drawn strip of paper coming to bear on the drum while being guided at the rear of the latter for its cutting,

characterized:

in that the drum (4) made in one piece comprises a shaft (4.1) around which is arranged a plurality of adjacent and parallel discs (4.3) comprising intermediate discs (4.3.2 - 4.3.3 - 4.3.4 - 4.3.5 - 4.3.6) of the same configuration serving as a support for the strip of pulled paper, and having on their periphery a notch for positioning and housing the cutting blade in the rest position, said shaft receiving a first end disc front (4.3.1) and a second rear end disc (4.3.7) allowing the positioning and articulation of the cutting blade, and in that the rear end disc is arranged with means (4.5) defining an interior chamber for receiving a rack means (7) adapting to a fixed position on the wing opposite the casing, and in that the cutting blade (5) is arranged at one end in manhole cover (7) with a profiled heel (9) comprising a plurality of teeth forming a complementary rack capable of cooperating, during the rotation of the drum, with a plurality of teeth (7.3) constituting a fixed rack formed on the means ( 7), and in that a stop means (10) ensures, after the partial rotation of the drum for the operation of cutting the strip of paper, the re-engagement of the said cutting blade along a path opposite to the direction of rotation of the drum, in the notches formed on the latter, during the complementary rotation of the drum with a view to presentation for a new operating cycle, and in that the rotation of the drum is obtained by means ( 6) ensuring the supply of the strip of paper to the drum and its tensioning by a semi-automatic operation, and in that it comprises an operating device (40-6.5) allowing the exit of the wiping material of the apparatus there for input and traction by the user.

-2- Dispensing apparatus according to claim 1, characterized in that the rear end disc (4.3.7) formed on the drum has a flange defining an interior chamber (4.5.1) for receiving the means (7) to fixed position, said flange having a section cut transversely allowing its access to the interior to allow the engagement of the teeth formed on the means (7) and the heel (9), said means (7) being designed in the form of a crown (7.1) having centering studs on the wing on the wing opposite the casing, the other side of the crown being shaped with a semicircular boss (7.2) extending by a plurality of teeth (7.3) defining the rack.

-3- Dispensing device according to claim 2, characterized in that the set of teeth (7.3) formed on the means (7) comprises a first group of teeth (7.3a) with constant profile and a second group of following teeth ( 7.3b) with a progressive profile, the last tooth of greater height ensuring a double exhaust function of the cutting blade with a view to good penetration into the drawn strip of paper and a non-return stop means when the cutting blade has escaped the abovementioned teeth (7.3) to follow the curvilinear periphery of the boss (7.2) formed on the means (7) until its semi-circular shape opposite the teeth, for another operating cycle.

-4- Dispensing device according to claim 3, characterized in that the semi-circular boss (7.2) is extended opposite the serration by a shoulder (7.4) capable of constituting a means of braking and blocking by contact in position of certain parts of the heel associated with the cutting blade with said shoulder.

-5- Dispensing device according to any one of claims 1 to 4, characterized in that the blade (5) is made of one-piece plastic material and comprises a support rod (5.1) whose ends forming a finger (5.2) engage on the end discs of the drum, said blade comprising teeth (5.3) profiled in successive triangulations, and in that the blade has at one end opposite the means (7) a piece forming a heel (9) having a rear part (9.1) in triangulation with a rounded joining angle and two curvilinear edges (9.3 - 9.4) opening towards the widest part of the heel shaped with a plurality of teeth (9.5) forming a rack, said heel part being integral with the axis of the blade in an eccentric position, the teeth then being in progressive displacement relative to the axis of the blade.

-6- Dispensing apparatus according to claims 3 and 5 together, characterized in that the longest tooth of the means (7) cooperates with the first tooth formed on the heel (9) while the first tooth of the means (7) cooperates with the most eccentric tooth of the means (9).

-7- Dispensing device according to claim 5, characterized in that the teeth (5.3) of the cutting part of the blade have a curved profile downwards, their inner face having a concavity forming a seat (5.4) and support area of the cut material part.

-8- Dispensing device according to claims 1 to 5, characterized in that the wall casing (2) has, on its horizontal wall near the lateral wing opposite the rack means (7 and 9), a profiled stop ( 10) with a curvilinear profile forming a ramp ensuring, after the cutting operation of the paper strip, the support of the heel (9) associated with the blade, and the pivoting and displacement of said heel causing that of the cutting blade in its housing formed by the notches established on the intermediate discs of the drum.

-9- Dispensing device according to claims 2 and 8 together, characterized in that the rear end disc (4.3.7) formed on the drum has a flexible tongue located opposite the axis of rotation of the blade cutting and slightly outside overhang relative to the periphery of the disc, said tongue constituting, according to the rotation of the drum, a second non-return stop means coming into contact with the stop (10) formed on the casing.

10

-10- Dispensing device according to any one of claims 1 to 7, characterized in that the cutting blade (5) is housed in the notches formed on the intermediate discs of the drum, in a position such that at the start of ι ₅ operating cycle, the teeth of the blade do not protrude from the drum with a space of a few millimeters, and in that during the meshing of the first tooth of the means (7 and 9), said teeth are in the plane formed between the axis of the blade and the axis of the drum.

we

-1 1 - Dispensing device according to any one of claims 1 to 10, characterized in that the trajectory of the cutting blade (5) is remarkable: in that at the start of the cycle, the blade is arranged at the inside the notches of the drum discs leaving a space of _{25 a} few millimeters relative to the generator formed by the intermediate discs of the drum, in that at the start of the cycle the rotation of the drum, under the action means (7 and 9) causes the blade to move a few millimeters so that when the first tooth of each means (7 and 9) has meshed, said teeth lie in the plane defined by the axis of the blade and the axis of the drum, and in that the progressive rotation of the drum causes the blade to come out (5) by the meshing action of the teeth of the racks, the blade coming out taking place at the rear of the device , and in that the total output of the blade corresponds to the exhaust and the gear of the last two teeth between them racks, and in that, after exhausting the teeth between them of the racks, the blade remains in position "output ", the part forming the heel no longer being in contact with the means (7) in a fixed position, and in that the retraction of the blade is effected after the abutment and contact of the heel (9) of the cutting blade with the curvilinear stop (10) formed on the casing, causing by an effect opposite to the sense of rotat ion of the drum tilting and re-entry of the blade in the notches formed on the discs of the drum, and in that the heel (9) bypasses the boss (7.2) formed on the means (7) to present in a new operating cycle the cutting blade.

-12- Dispensing device according to claim 1, and any one of claims 2 to 11, characterized in that it comprises means (6) ensuring the supply of the strip of material and its tensioning, said means (6) comprising a shaft (6.1) having at its ends centering fingers for snapping between the lateral wings (2.1) of the casing, and in that said shaft (6.1) comes to bear on the discs intermediates formed on the drum, and in that said means (6) has, at one end, a disc

(6.4) of large dimension forming a handwheel.

-13- Dispensing apparatus according to claim 12, characterized in that said shaft (6.1) is arranged with a plurality of monobloc discs (6.3), some of the discs bearing against the drum and other intermediate discs contributing to the pressure paper.

-14- Dispensing apparatus according to claim 12, characterized in that the disc (6.4) is positioned between the end discs of the drum and the wing facing the casing, said disc having a cylindrical notched shoulder (6.4.1) to cooperate with the underlying disc of the drum also notched to ensure the rotation of the assembly by prior manual control of the user.

-15- Dispensing device according to claim 12, characterized in that the shaft (6.1) of the means (6) comprises at its other end opposite the heel (9) of the blade a complementary disc (11) acting as a stop and guide said heel to cause the reentry of the blade again in the notches formed on the drum, for the presentation of the blade for a new operating cycle.

-16- Dispensing device according to any one of claims 1 to 15, characterized in that the housing (2) is made in one piece and comprises a bottom plate (2.2) with wings lateral (2.1 a - 2.1b) forming in their upper part triangular projections (2.3) directly presenting ends (2.4) for receiving the coil, the wings having, in their lower part, a plurality of openings for receiving the drum of the means (7) at a fixed position and of the means (6) for feeding the paper strip, said lower part having a cutting line (2.1 d) giving flexibility for mounting the aforementioned means, and ensuring a slight deformation to accompany the movements of pressurization of the paper on the drum, said casing having a horizontal wall receiving a hoop (2.8) in the form of a swan neck, placed facing the drum, and allowing the guiding of the strip of paper .

-17- Dispensing device according to any one of claims 1 to 16, characterized in that the protective cover (8) has, in its bottom part, a wall (8.2) opposite the horizontal bottom wall of the housing , by defining a slot for the passage of the paper strip, and in that a plurality of parallel projections (8.4) is formed in said bottom portion of the cover to come opposite the intermediate discs of the drum, in order to penetrate into notches (5.5) formed on the cutting blade, and in the bottom portions of the teeth of the cutting blade to ensure better guidance of the paper.

-18- Dispensing device according to claim 1, characterized in that it comprises an operating means (6.5) allowing the wiping material to exit from the device for gripping and pulling by the user, under the supporting action of the forearm of the user on said means, excluding hands, said drum (4) and said means (6.5) being set up to control and ensure rotation in one direction, the drum being arranged with complementary means (34 - 35 ) projecting (34) capable of cooperating with the pressing means (6) to facilitate the detachment of the piece of strip of cut material, and in that the operating means (6.5) is defined by the flywheel projecting from the pressing means ( 6), presenting a polygonal section with alternating cavities (6.6) and protruding shapes, allowing the positioning of the forearm.

19- Apparatus according to claim 1, characterized in that the cover (8) has on its inner face (8.1), a horizontal projection (8.2) allowing the pre-positioning of the paper strip between the pressing means (6) and the drum (4) by fitting as closely as possible into the space for introducing the paper strip between the pressing means (6) and the drum (4).

-20- Apparatus according to claim 18, characterized in that one of the drum discs, and in particular the end disc, has means (34) in the form of bosses, providing a temporary tensioning of the strip of paper by pressing with the means (6).

-21 - Apparatus according to claim 18, characterized in that the rotation of the drum and the means (6) is effected by two serrated discs formed respectively on the drum and the means (6) near one of their ends, one (35) of the teeth formed on the drum disc being of longer length important to ensure a tensioning of the paper for tearing.

-22- Dispensing apparatus, according to claim 1, characterized in that it comprises a device (40) authorizing the prior exit of the strip of paper, out of the apparatus, for its gripping and its pulling by user, said monobloc and bent two-branched profiled device, having a lever part (41) projecting outside the device, and an extension forming an arm (42) inside the device, ensuring the partial rotation of the drum, said arm having at its front end a serrated sector shape (42.1) and a rib shape (42.2) for cooperating respectively with a rack (44) and a "S" shaped cam (48) disposed on the drum axis (4).

-23- Apparatus according to claim 22, characterized in that the lever part (41) and the arm part (42) of the device are connected by a bent zone (43), defining a gap (45) allowing the passage of the corresponding side wall of the casing, said casing having at the rear a passage opening (46) of the bent part of the device, and in that said device is articulated, by its bent part, between the side wall of the casing and a attached flange (47) disposed opposite to form a yoke shape.

-24- Apparatus according to claim 23, characterized in that said lever (41) has, in its rear part, a perpendicular extension forming an elbow (43.1) substantially horizontal, with itself a vertical extension (43.2) defining the area articulation (43.3) of the device, said zone comprising opposing centering pads (43.4) engaging in the openings formed on the side wall of the casing and on the abovementioned flange.

-25- Apparatus according to any one of claims 22 to 24, characterized in that the front end of the arm (42) has a serrated angular sector (42.3) of equal toothing, as well as with an end tooth (42.4) located in the same plane as the ramp part, and in that in the thickness of the end of said arm adjacent to the serrated sector, is made a rib (42.2) of great length disposed in a plane inclined relative to the sector serrated (42.3), said rib defining on its front part in the form of a beak (42.6) cooperating with the complementary shapes of the cam (48) disposed on the axis of the drum.

-26- Apparatus according to claim 25, characterized in that the cam (48) has a flattened "S" profile with a first semi-circular half-part (48.1), against which the rack (44) is fixedly positioned , and a second semi-elliptical part (48.2) arranged opposite, the junction of the two circular and elliptical half parts being established by a rectilinear profile (48.3) on one side, and a curvilinear profile (48.4) on the other side, forming a ramp, and cooperating with the beak shape (42.6) established on the rib (42.2) of the arm.

-27- Apparatus according to claim 26, characterized in that a stop (49) is fixed on the side wall of the housing to limit the movement of the device (40).

-28- Dispensing apparatus according to claim 13, characterized in that the means (6) for feeding the strip of material to the drum is arranged with a plurality of complementary discs (6.5) arranged on either side of the discs (6.3) in contact with the discs (4.3) of the drum, the discs (6.5) having a diameter (D1) substantially greater than the diameter (D2) of the disc (6.3) to cause a slight penetration of the material in the intervals formed between the successive discs of the drum, and in that the discs ( 6.3) have a decreasing diameter from the central central disc, ensuring flexibility of said means (6) relative to the lateral wings supporting the casing.

-29- Apparatus according to claim 28, characterized in that the drum is arranged on its shaft between certain discs (4.3) with indentations or weakening zone (4.6) giving it flexibility.

-30- Apparatus according to claim 28, characterized in that the drum comprises complementary discs (4.8) disposed between the discs (4.3) forming protruding areas (4.9) relative to the tangential generator of the discs (4.3) , said projecting zones being adjacent to the notches (4.4) receiving the cutting blade support and improving the output of the paper at the lower end of the cover.

-31 - Apparatus according to claim 28, characterized in that the means (6) for pressing, tensioning and feeding the paper has at its end a very wide disc (6.6) with an internal groove (6.6 .1) allowing reception and disc guide (4.3) facing formed on the drum and allowing the drive of the means (6) under the effect of rotation of the drum.

-32- Apparatus according to claim 28, characterized in that on the toothed sector (9) associated with the blade holder and cooperating with the rack means (7) is disposed a stop (52) anti-tilting coming into abutment the end disc (4.3) of the drum.

-33- Apparatus according to claim 13, characterized in that some of the discs of the drum and / or of the pressing element are arranged with noise damping rods.