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(11) | EP 0 195 751 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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| (54) |
An automatic dispenser of rolled paper Automatischer Ausgeber für Papierrollen Distributeur automatique de papier enroulé |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
[0001] This invention relates to an automatic dispenser of a rolled paper, particularly for use as a towel, of the type in which a given amount of paper is dispensed when required by an user, the supplied paper being then caused to rewind up after a predetermined time.
[0002] Though only rolled paper is mentioned above, and will be referred to in the following for the sake of simplicity, it is to be understood that the invention also applies to the case when an other material, such, for example, as a fabric is employed than paper.
[0004] They comprise a housing in which a roll of paper to be delivered is located; an edge part of the paper is passed through appropriate outlet and inlet openings and is rewound around an axis or re-winding drum. In order that paper is dispensed, two driving rollers are provided and are connected to the roll of paper to be supplied and the re-winding drum respectively; these latter run-off each a given amount of paper to form a paper loop beneath the dispenser; after a predetermined time is elapsed, the driving roller connected to the re-winding drum is rotated in an opposite sense, with respect to its preceding sense of rotation, thereby causing the supplied paper to re-wind up.
[0005] These prior known dispenser usually use two motors for individually and selectively operating each of said driving rollers. Said motors are self-operating units so that they require separate controls, which makes the dispenser complicated in construction and, thus, more expensive.
[0006] FR-A 1 378 458 discloses a rolled paper dispenser wherein means are provided for sensing the end of the paper band and means, spring operated, for completely rewinding the paper.
[0007] From FR-A 2 169 295 there is known an automatic rolled paper dispenser of the closed-cycle type in which the paper, after it has run over a roller, through an outlet opening of the dispenser and through an inlet opening thereof, is rewound around a re-winding axis or drum to form a paper roll, comprising one single motor for actuating said dispenser and re-winding axis, means which cause the motor to start, to stop and to invert its motion, and means for signalling the exhaustion of the paper roll (6) and causing a fast rewinding of the paper.
[0008] Aim of this invention is that of providing a rolled paper dispenser simplified in construction and, as a result, of reduced cost.
[0009] This aim is achieved by a rolled paper dispenser according to the characterizing part of claim 1.
[0010] The automatic rolled-paper dispenser of this invention is particularly characterized in that it utilizes a single rotary motor whose shaft extends perpendicularly out of a lateral wall of the housing and is integral with a pinion which meshes with a driven wheel that in turn meshes with an orthogonal gear pair to drive therethrough a shaft carrying two helical toothings or screws, one of these screws being keyed on said shaft and the other screw being secured in such a manner thereto as to be driven in rotation only when the shaft is rotated in one of the two possible senses of rotation thereof, said screws being in mesh with respective wheels that are keyed on driving rollers controlling the supply and the re-winding of the paper, means being provided to cause said single motor to start, to stop and to invert its motion. All these means are located outside the housing of the dispenser.
[0011] According to further teachings of this invention, at least one of said two driving rollers is so designed as to enable an appropriate sensor cooperating therewith to impart the necessary contact adherence to the paper running over said roller as well as to signal exhaustion of the paper roll and to cause automatic complete re-winding of a free portion thereof.
[0012] The above and other features of the automatic rolled-paper dispenser of the invention will be better understood when reading the following detailed description made in connection with the accompanying drawings which shown, by way of example, one preferred embodiment thereof and in which:
- Figure 1 is a partial side view of an automatic rolled-paper dispenser according to the invention with the outer housing removed therefrom;
- Figure 2 is a partial side view schematically showing the dispenser in figure 1 as seen from an opposite side to that of figure 1;
- Figure 3 is a partial view of the dispenser in figure 1 as seen from the above;
- Figure 4 is a side view similar to that of figure 1, with the different parts being shown schematically and superposed to one another to facilitate description of the dispenser operation.
[0013] With reference to the above figures, an automatic rolled-paper dispenser according to the invention is shown to include an internal stationary framework having two sidewalls 1 and 2 and an outer housing 3, shown in figure 4.
[0014] Secured to the dispenser framework is a cradle-like housing 4 designed to receive a roll 5 of a paper to be dispensed. The cradle-like housing 4 is usually mounted in a pivotable manner in order to make for easy introduction of the paper roll 5.
[0015] In charging the dispenser, a free end portion or edge of the paper roll 5 is made to pass over a driving roller 6, out of a front opening 7 in the bottom of the dispenser and then introduced again into the dispenser through a rear opening 8 to be wound around an axis or drum 9 into a re-winding paper roll 10 which is constantly kept in contact with a driving roller 11 (figure 4). The re-winding drum 9 has its ends received in respective vertical open-top opening 12 formed in the sidewalls 1 and 2 of the dispenser frame.
[0016] With reference to figure 4, it is noted that in a rest condition of the device, the paper portion lying out of the dispenser, as shown by dash-line, is kept in contact with the outer surface of the cradle-shaped housing 4, while during utilization by an user, said paper portion defines a paper loop underneath the dispenser which is designated by reference numeral 13.
[0017] Firstly the construction of the automatic dispenser of the invention will be described in the following and then its operation.
[0018] Provide inside the dispenser is a rotary electric motor 14 a pinion 15 (figure 1) of which extends out of the side-wall 1 of the dispenser frame.
[0019] Reverting to figure 1, it is noted that the driving pinion 15 meshes with a driven wheel 16 that in turn is in mesh with an orthogonal pair 17, 18 to drive therethrough a shaft 19. This shaft 19 is provided near its ends with respective helices or screws 20 and 21 meshing with associated gear wheels 22 and 23 carried on said driving rollers 11 and 6, respectively. The screw 20 is keyed on shaft 19 so as to be rotated in any senses of rotation of the shaft 19, and thus, the drive pinion 15. On the other hand, the screw 21 is by known means so secured to shaft 19 as to be rotated only in one sense of rotation of same shaft 19 and to be at rest when the shaft 19 rotates in the opposite sense.
[0020] More specifically, with reference to figure 1, when the drive pinion 15 rotates in a counterclockwise direction, that is the direction of arrow A, all of the other elements of the kinematic chain will rotate in the sense shown by arrows A. Namely, the driven wheel 16 will rotate in a cloclwise direction, and the shaft 19 will be actuated in a anticlockwise direction, when viewed from the right, to cause both the screws 20 and 21 to rotate in the same sense of rotation so that these screws 20 and 21 will drive the gear wheels 22 and 23 in a clockwise direction.
[0021] On the other hand, when the drive pinion 15 is rotated in a clockwise direction, that is in the sense of arrow R, the motions will be inverted such that the driven wheel 16 is rotated in a counterclockwise direction and the shaft 19 (again as seen from the right side, figure 1) rotates in a clockwise direction to drive only the screw 20 in the same sense of rotation, the screw 20 in turn causing the gear wheel 22 to rotate in a counterclockwise direction. In this latter case, both the screw 21 and the gear wheel 23 meshing therewith are not driven in rotation.
[0022] Referring now to fig. 2 that shows a partial view of the dispenser as seen from an opposite side to that of figure 1, the driving roller 6 extends out of the sidewall 2 of the dispenser framework and is there provided with a gear wheel 24 meshing with a gear whell 25 pivoted on the wall 2 and carrying at its rear side a cam 26 shown in dotted line in figure 2. More specifically, the cam means 26 is a circular disk having a recess 27 on the periphery thereof. One end of a lever 28 making part of a pair of articulated levers, is pressed against the profile of the cam 26, the other lever 29 of said pair, shown in dotted line in figure 2, being arranged inside the dispenser. The lever 28 is secured to the dispenser wall 2 by means of a pivot pin 30 received in an elongated slot 31 of said lever 28. In this way, the lever 28 is able to move in a reciprocating manner, while the lever or blade 29 is able to swing about the pivot connection of the two levers.
[0023] As seen in sectional view in figure 2, fitted inside the dispenser is a square member 32 an arm of which is constantly pressed against the driving roller 6 by a spring means 33. In fact, there is a number of pressing arms, designated by reference numeral 34, that are acting on the roller 6, as shown in figure 3, all of these arms 34 being secured to the same axis 35 to which the square member 32 is secured.
[0024] As shown in figure 3, the roller 6 is provided, in the portion thereof extending between the two walls 1 and 2, with regularly spaced apart cavities 36 or zones where the roller material has been removed to reduce the roller diameter, said cavities being designed to receive said arms 34 with interposition of the paper layer.
[0025] Obviously, the outer surface of roller 6 is conveniently roughened to provide for better friction with respect to the paper run around it.
[0026] Again with reference to figure 3, it can be noted that the rear roller 11 is shown to have a configuration the same as that of roller 9, though in this case the cavities 36 could be omitted since, as distinct from the cavities 36 in roller 6, they no longer fulfil any function, as will be explained in the following. Naturally, the outer surface of roller 11 is also roughened in order to increase friction with the paper in contact therewith.
[0027] According to a further feature of the automatic rolled-paper dispenser construction of the invention, it is to be observed that a stationary axis 37, shown schematically in figure 2 and is sectional view in figure 4, is arranged between the two walls 1 and 2 and has the function of increasing tension between the paper and the roller 6.
[0028] Moreover, as shown in figure 4, arranged within the dispenser are three microswitches M1, M2, M3 that can be operated by a pawl 38 on cam 26, the blade-shaped lever 29 of the pair of articulated levers 28, 29 and the square member 32, respectively. As will be better explained below, said microswitches are able to emit signals towards a centralized electronic station schematically shown at C, figure 4, for starting, stopping and/or inverting motion of the motor 14.
[0029] Now, operation of the automatic rolled-paper dispenser of the invention will be described with particular reference to figure 4 in which, as already said, the different parts are shown schematically and/or in a superposed relationship with one another for a better understanding of the dispenser operation. In any case, reference to figures 1, 2 and 3 will permit the positions of the individual parts to be more precisely defined.
[0030] In operation, the device is supposed to start from a rest position with the lying-out portion of paper being in contact with the outer surface of the cradle-like housing 4, as shown in dotted line, figure 4.
[0031] When the user requires to use paper, he (she) operates an appropriate push-button (not shown) provided in the front of the paper dispenser thereby starting the motor 14 to cause rotation of the kinematic chain of figure 1 in the sense of arrows A. At this stage, both the driving rollers 6 and 11 will rotate in a clockwise direction so that the roller 6 will cause a portion of paper to be fed through the front opening 7 of the dispenser, while the roller 11 will cause a similar amount of paper to be fed through the rear opening 8 by partial un-winding of the re- winding paper roll 10. It is to be noted that during this paper supply stage, the driving roller 6 causes the cam 26 to perform one complete turn, the cam starting from, and stopping at, the same position it is shown to occupy in figure 4. Paper supply is arrested upon the cam 26 completing one turn since at that instant the cam pawl 38 actuates the microswitch M1 which sends a signal to station C to stop the motor 14. It is to be observed that during this paper delivery, the supplied paper runs into a paper loop 13 underneath the dispenser, as shown in solid line, figure 4, and, at the same time, the pair of articulated levers 28, 29 are moved from the dotand-dash-line position to the solid line position where the end of lever 28 is engaged in the recess 27 of the disk or cam 26. For this position of the pair of articulated levers 28, 29, the blade-like lever 29 has performed a swinging movement about the pivot of the lever so that the end thereof is pressing the paper against a rear stationary abutment 39 of the dispenser, shown in fig. 4.
[0032] A timer means (not shown in the drawings) allows for the paper to remain in this loop-forming position a time sufficient for utilization thereof by an user, after which time the timer causes automatic re-winding of the papers by the motor 14 being started in the inverted sense of rotation.
[0033] The paper re-winding is normally faster than is the paper releasing and, at this stage, the kinematic chain rotates in the sense of arrows R. In particular, the driving roller 11 will rotate in an anticlockwise direction to cause fast re-winding of the paper roll 10 around the drum 9. During this re-winding stage the portion of paper extending out of the dispenser will return to its dash-and-dot-line position of figure 4 where the paper adheres to the outer surface of the cradle-shaped housing 4, so that the pair of articulated levers 28 and 29 are caused to move back to their starting position as shown in a discontinued line. The paper re-winding is stopped by the blade-like lever 29 actuating the microswitch M2 which sends a signal to station C to stop the motor 14.
[0035] As the re-winding paper roll 10 is increasing in diameter, the axis or drum 9 thereof will move up vertically along the elongated openings 12 in the sidewalls 1 and 2 of the dispenser frame.
[0036] As already said, in order to assist in achieving the required adherence of the paper to the driving roller 6, the invention provides the square member 32 whose horizontal arms 34 fit into corresponding cavities 36 in said roller 6.
[0037] According to an important feature of this invention, in addition to serve the above-mentioned purpose, the square member 32 also functions as a means for controlling the self-rewinding of the end paper portion when the paper roll 5 has runned out. In fact, when the paper roll 5 is exhausted so that paper is lacking between the drum 6 and the arms 34 pressing thereon, said arms 34 will tend, under effect of spring 33, to enter the cavities 36 in the roller 6 to cause a rotation of the square member 32 about the pivotal axis 35 (figure 2) which actuates the microswitch M3. This microswitch M3 sends a signal to the centralized station C whereupon this latter causes the paper to re-wind during a predetermined time at a high speed.
[0038] As it should be ready apparent, recharging of the paper dispenser is as follows: - the paper roll 10 is removed from the top of the dispenser by the axis 9 being caused to slide off the open-top slits 12 and a fresh paper roll 5 is fitted into the cradle-like housing 4.
[0039] From the above, it clearly appears that the automatic rolled-paper dispenser of the invention has significant advantages over the paper dispensers of the prior art, these advantages being mainly due to the fact that only one single motor 14 is used to operate the whole of the kinematic chain of the dispenser thereby eliminating the need for separate control of two individual motors, as is the case with the known types of dispensers.
[0040] Obviously, while a preferred embodiment of the automatic rolled-paper dispenser of the invention has been disclosed herein before, many changes can be made in the details of construction, as will be apparent to those skilled in the art, without departing from the spirit and scope of the claims.
1. An automatic rolled paper (5) dispenser of the closed-cycle type, that is to say
of the type in which the paper, after having run over a driving roller (6), through
an outlet opening (7) of the dispenser and through an inlet opening (8) thereof, is
rewound by means of a driving roll (11), around a re-winding axis or drum (9) to form
a paper roll (10), comprising one single motor (14) for actuating said driving rollers
. (6) and (11), means which cause the motor (14) to start, to stop and to invert its
motion, and means for signalling the exhaustion of the paper roll (5) and causing
a fast rewinding of the paper and wherein said motor (14) actuates a shaft (19) carrying
near the ends thereof respective helices or screws (20) and (21) which in turn are
in mesh with associated gear wheels (22) and (23) said gear wheels (22) and (23) being
keyed on said driving rollers (11) and (6) respectively, said screw (20) being keyed
on the shaft (19) while the screw (21) is so secured to said shaft (19) as to be driven
in rotation only when the shaft (19) rotates in a given direction, in such a manner
that during the paper dispensing step both the driving rollers (6) and (11) are actuated,
while during the paper re-winding step, only the driving roller (11) is actuated,
characterized in that the drive shaft of said motor (14) extends perpendicularly out
of a lateral wall (1) of the dispenser housing and is integral with a drive pinion
(15) meshing with a driven wheel (16) which in turn meshes with an orthogonal pair
(17, 18) to drive said shaft (19) carrying said helices (20, 21) and wherein said
helices (20, 21) mesh directly with gear wheels carried on said driving rollers (6)
and (11), the ends of said driving rollers (6) (11) also extending perpendicularly
out of the lateral wall of the dispenser housing, all these means being located outside
said housing, the paper roll (10) wound around the rewinding axis (9) being constantly
kept in contact with said driving roller (11).
2. The dispenser according to claim 1, wherein said driving roller (6), via a gear
wheel pair (24, 25), causes a cam or disk (26) to turn, the cam or disk (26) having
a recess (27) formed thereon, and being provided with a pawl (38) designed to actuate
a microswitch (M1) that causes said motor (14) to stop.
3. The dispenser according to claim 2 wherein a pair of articulated levers (28, 29)
are provided, one end of the first lever of said pair being able to fit into said
recess of the cam (26) when this latter has actuated the microswitch (M1), while the
second lever or blade (29) by its end presses the paper against a stationary abutment
(39).
4. The dispenser according to claim 3, wherein during the paper re-winding stage,
said pair of articulated lever (28, 29) are made to be so displaced that the lever
(29) is swung about the levers' pivot such that it actuates a microswitch (M2) that
causes the motor (14) to stop.
5. The dispenser according to anyone of claims 1 to 4, wherein at least one first
roller (6) of said driving rollers (6, 11) has grooves (36) formed therein and said
paper pressing means are able to fit into said grooves, said pressing means being
comprised of at least one square member (32) an arm (34) of which is acted upon by
a spring (33) tending to push it towards one of said grooves (36) of roller (6), in
such a manner that upon the paper roll (5) being exhausted, said arm (34) enters the
corresponding groove (36) as a result of which the square member (32) is rotated about
its pivot axis (35) to actuate a microswitch (M3) that causes the out-extending portion
of paper to re-wind for a predetermined time.
1. Ein automatischer Papierrollen-Verteiler (5) der geschlossenen Kreislaufart, das
heißt der Art in der das Papier, nachdem es um eine treibende Walze (6), durch einen
Ausgangsschlitz (7) des Verteilers und durch einen Eingangsschlitz (8) desselben,
herumgegangen ist, ist durch eine Treibrolle (11) um eine Haspelachse oder Trommel
(9), um eine Papierrolle (10) zu bilden, gewickelt, einen einzelnen Motor (14), um
die genannten Walzen (6) und (11) anzutreiben, Mittel, die das Starten, Halten und
Umkehren des Motors verursachen; und Mittel, um das Ende der Papierrolle zu signalisieren,
und eine schnelle Papierumwicklung zu verursachen, einschließend, und in der der genannte
Motor (14) eine Welle (19) antreibt, die neben ihren Enden Schrauben (20) und (21)
trägt, die ihrerseits mit Zahnrädern (22) und (23) eingreifen, und diese Zahnräder
(22) und (23) über die Treibrolle (11) und (6) bzw. verkeilt sind, und diese Schraube
(20) über die Welle (19) verkeilt ist, während die Schraube (21), so an diese genannte
Welle (19) gesichert ist, daß sie nur angetrieben ist, wenn die Welle (19) sich in
eine gegebene Richtung dreht, so daß die Treibrolle (6) und (11) der Papierverteilungsphase
angetrieben sind, indem nur die Treibrolle (11), während der Papierumwicklungsphase
angetrieben ist, dadurch gekennzeichnet, daß die Antriebswelle des genannten Motors
(14) sich senkrecht aus einer Seitenwand (1) des Verteilergehäuses erstreckt, und
mit einem Antriebsritzel (15) einteilig ist, das mit einem getriebenen Rad (16) eingreift,
das seinerseits mit einem orthogonalen Paar (17, 18) eingreift, um die genannte Welle
(19) anzutreiben, die die genannten Schrauben (20, 21) unmittelbar mit auf den genannten
Treibrollen (6) und (11) getragenen Zahnräder eingreifen, und die Enden der genannten
Treibrollen (6) und (11) sich auch senkrecht aus der Seitenwand des Verteilergehäuses
erstrecken, und sich alle diese Mittel außerhalb des genannten Gehäuses befinden,
und die um die Haspelachse (9) gewickelte Papierrolle (10), mit dieser treibenden
Walze (11) beständig in Kontakt bleibt.
2. Ein Verteiler nach Anspruch 1, in dem die genannte treibende Walze (6) durch ein
Zahnräderpaar (24, 25) einen Nocken oder eine Scheibe (26) das Drehen verursacht;
und der Nocken oder die Scheibe (26) einen Hohlraum (27) trägt und mit einer Klinke
(38) versehen ist, die, um einen Mikroschalter (M1), der den genannten Motor (14)
zum Halten bringt, anzutreiben, entworfen ist.
3. Ein Verteiler nach Anspruch 2, in dem ein Paar von Gelenkhebeln (28, 29) versehen
sind, und ein Ende des ersten Hebels dieses Paares sich in den genannten Hohlraum
des Nockens (26) anpassen kann, wenn dieser letzte den Mikroschalter (M1) angetrieben
hat, während der zweite Hebel oder Schaufel (29) an seinem Ende das Papier gegen einen
Festanschlag (9) drückt.
4. Ein Verteiler nach Anspruch 3, in dem das genannte Paar von Gelenkhebeln (28, 29)
während der Papierumwicklungsphase so verschoben wird, daß die Hebel (29) um den Hebelgelenkzapfen
schwenkt und so einen Mikroschalter (M2) antreibt, der den Motor zum Halten bringt.
5. Ein Verteiler nach einem der Ansprüche 1-4, in dem wenigstens die erste Walze (6)
von den genannten treibenden Walzen (6, 11) mit Nuten (36) versehen ist, und das genannte
Papier-Druckmittel sich an diese Nute anpassen kann, und das genannte Druckmittel
von wenigstens einem Winkelelement (32) gebildet ist, dessen Arm (34) durch eine Feder
geschoben ist, die ihn gegen eine dieser genannten Nuten (36) der Walze (6) zu schieben
versucht, so daß dieser Arm (34), wenn die Papierrolle (5) zu Ende ist, in die entsprechende
Nut (36) eindringt, und demzufolge das Winkelelement (32) sich um seine Zapfenachse
dreht, um einen Mikroschalter (M3) anzutreiben, der das Umwickeln des ausgetretenen
Papierzipfels für eine vorbestimmte Zeit verursacht.
1. Un distributeur automatique de papier en rouleaux (5) du genre à cycle fermé, c'est-à-dire
du genre dans lequel le papier, après être passé autour d'un rouleau moteur (6) par
une fente de sortie (7) et une fente d'entrée (8) du distributeur, est enroulé de
nouveau au moyen d'un rouleau moteur (11), autour d'un axe ou tambour de re-enroulement
(9) pour former un rouleau (10) de papier, comprenant un seul moteur (14) pour déplacer
lesdits rouleaux-moteurs (6) et (11), des moyens qui commandent le démarrage, l'arrêt
et le demi-tour du moteur, et des moyens pour signaler l'épuisement du rouleau (5)
de papier et pour commander le re-enroulement rapide du papier et dans lequel ledit
moteur (14) commande un arbre portant, à proximité de ses extrémités, des respectives
hélices ou vis (20) et (21) qui à leur tour s'engagent avec des respectives roues
dentées (22) et (23), iesdites roues dentées (22) et (23) étant calées sur lesdits
rouleaux-moteurs (11) et (6) respectivement, ladite vis (20) étant calée sur l'arbre
(19) tandis que la vis (21) est fixée à l'arbre (19) de façon à être entraînée en
rotation seulement quand l'arbre (19) tourne dans une direction déterminée, de telle
sorte que pendant la phase de distribution du papier, tous les deux rouleaux-moteurs
(11) et (6) sont actionnés, tandis que pendant la phase de re-enroulement du papier,
seulement le rouleau-moteur (11) est actionné, caractérisé du fait que l'arbre dudit
moteur (14) se développe perpendiculairement à l'extérieur de la paroi latérale (1)
du logement du distributeur et est solidaire avec un pignon moteur (15) s'engageant
avec une roue conduite (16) qui à son tour s'engage avec une couple orthogonale (17,
18) pour actionner ledit arbre (19) portant lesdites hélices (20, 21) et dans lequel
lesdites hélices (20, 21) s'engagent directement avec des roues dentées portées sur
lesdits rouleaux-moteurs (6) et (11), les extrémités desdits rouleaux-moteurs (6)
et (11) se de- veloppant perpendiculairement à l'extérieur de la paroi latérale du
logement du distributeur, tous ces moyens étant logés à l'extérieur dudit logement,
le rouleau (10) de papier s'enroule autour de l'axe (9) de re-enroulement qui est
toujours en contact avec le rouleau-moteur (11).
2. Un distributeur selon la revendication 1, où ledit rouleau-moteur (6), par l'intermédiaire
d'une couple de roues dentées (24, 25) commande la rotation de la came ou disque (26),
la came ou disque (26) portant une rainure (27) et étant pourvue d'une griffe (38)
pour l'actionnement d'un micro-interrupteur (M1) qui commande l'arrêt dudit moteur
(14).
3. Un distributeur selon la revendication 2, où une couple de leviers articulés (28,
29) est prévue, une extrémité du premier levier de cette couple se positionne dans
ladite rainure de la came (26), quand la dernière a actionné le micro-interrupteur
(M1), tandis que le deuxième levier ou lame (29) pousse le papier par son extrémité
contre un appui fixe (39).
4. Un distributeur selon la revendication 3, où pendant la phase de re-enroulement
du papier, ladite couple de leviers articulés (28, 29) subit un déplacement tel que
le levier (29) pivote autour du point d'articulation du levier et actionne un micro-interrupteur
(M2) qui commande l'arrêt du moteur (14).
5. Un distributeur selon une quelconque des revendications 1 à 4, où au moins un premier
rouleau (6) desdits rouleaux-moteurs (6, 11) est pourvu de rainures (36) et lesdits
moyens presseurs du papier entrent dans lesdites rainures, lesdits moyens presseurs
étant constitués au moins d'un élément à équerre (32), le bras (34) duquel est poussé
par un ressort (33) contre une desdites rainures (36) du rouleau (6), de sorte que
à l'épuisement du rouleau (5) de papier, ledit bras (34) entre dans la correspondante
rainure (36) produisant la rotation de l'élément à équerre (32) autour de l'axe de
son pivot (35) pour actionner le micro-interrupteur (M3) qui produit le re-enroulement
pour un temps déterminé du morceau de papier saillant.