EP0286511B1 - Inscription device for recorders having two diagram discs - Google Patents

Description

The invention relates to a writing device for recorders with two diagram-carrying discs, such as route recorders, generally called tachographs.

Simultaneous recording on a second chart disk is necessary in some applications; in particular, with the route recorders, this makes it possible to record the variation of an auxiliary parameter, for example the working and rest time of a second driver, while the first disc chart holder is concerned with the recording of several usage data (vehicle speed, usage time, distance traveled), and possibly consumption or engine speed if this last disc is the only one used.

The chart discs used as recording media must be able to be easily placed in the recorder, and their extraction must be possible without altering the recording obtained. These manipulations are delicate in the case of the use of two diagram-carrying discs arranged in parallel and rotating in synchronism; this is why the writing devices generally comprise support means and writing bodies having a structure whose simplicity is hardly compatible with the compactness required for the recorder boxes.

According to a relatively old technique, it was planned to have two diagram-carrying discs coaxially, with a separation spacer, the marker between the discs being made by means of a articulated system, deforming parallel to the discs, and fixed by a lateral shaft parallel to the axis of the housing, beyond the periphery of said discs. Such a technique is for example illustrated in the German patent N ° 959 232, in which is described a writing device of this type, certainly robust, but bulky and of an awkward handling for the operations of insertion and extraction of the discs. diagram holder. Another drawback of this arrangement lies in the imprecision of the drive of the two diagram-carrying discs tightened at the two ends of the cylindrical spacer; however, a relative shift obviously causes errors in the interpretation of the records, because the time reference is no longer exactly identified.

This technique has since been improved, since the space requirements have become more stringent, so that an attachment of supports for scripting members between the inner surface of the housing and the edge of the chart discs no longer becomes possible. It has thus been proposed, for mounting the scripting member disposed between the two diagram-carrying discs, a support plate articulated on the cover of the recorder in the vicinity of the articulation hinge thereof, plate in the thickness of which was integrated the script mechanism, with, at the end of the chain, the script organ itself.

Let us quote for example the French patent N ° 2 164 323 and the French certificate of addition N ° 2 215 660 which is attached to it, describing such a writing device very appreciably improving the old techniques by its compactness and its relatively easy handling: place a first diagram-carrying disc against the interior face of the hinged cover, insert a spacer ring, tilt the support plate in the direction of said interior face, place the second diagram-carrying disc in passing under the drive portion of the support arm of the scripting member. This structure is however complex, and the presence of the spacer ring, even clipping on the support plate, can make the drive of the two diagram-carrying discs imperfect, and therefore introduce a certain margin of error in the 'interpretation of the recordings obtained. Furthermore, the scripting body being carried out according to an oscillating arm around a fixed point of the support base, the tracing of the corresponding recording is done by curvilinear passes, which differentiates it from the rectilinear passes carried out conventionally by the other scripting organs, and moreover the positioning of said scripting member is difficult to control perfectly due to the multiplicity of games introduced.

In an attempt to overcome the drawbacks of the aforementioned writing device, the applicant has developed a writing device comprising an intermediate table passing between the two diagram-carrying discs on an angular sector thereof, said table being formed from a mounted part fixed on the door at a distance from the internal face of the latter, and from a movable part articulated on said fixed part; this device included a scripting member directly articulated on said fixed part of the intermediate table, preferably on the axis of the movable part of said intermediate table.

This device, illustrated in detail in French patent application No. 2,582,393, had a structure allowing a rather more precise and more reliable arrangement than in French patent No. 2,164,323, but remained difficult to handle for the carrier disc. -diagram inserted first; moreover, the distance between the two diagram-keeping discs remained relatively large at a level close to the periphery (that is to say approximately 2 to 3 mm over a third of the surface of the discs), which presented a risk. deformation of the first disc inserted, this deformation occurring moreover in the writing area.

To complete the state of the art, mention should be made of European patent application N ° 0 012 223, in which is described a system providing for an overall reversal after pivoting for the support plate, as well as French patents N ° 2 250 161, N ° 2 300 342 and N ° 2 340 585, in which the aim was moreover rather to organize the drive means with a view to a rotation of a diagram-carrying disc reversed with respect to to that of the other chart disc. Here again we find the drawbacks already mentioned in look at French patent No. 2,164,323. Finally, let us cite French patent No. 2,348,535 describing a retractable plate system, and German patent No. 2,917,329 describing a lifting system by cam adjacent to the hinge.

The object of the invention is to propose a writing device which is more efficient than the aforementioned devices, in particular allowing a precise recording mode by means of a scripting member arranged between two diagram-carrying discs, with an inter-disc distance as reduced. as possible.

Another object of the invention is to provide a device of simple structure, allowing improved centering and driving for the two diagram-carrying discs, with a minimum bulk in thickness.

Another object of the invention is to propose a device suitable for use with optional devices for recording and / or checking the presence of the disc.

According to the invention, it is a writing device for a recorder with two diagram-carrying discs, said recorder comprising a housing, a door hinged on said housing and a drive mechanism for diagram-carrying discs, said writing device. comprising support means and scripting members allowing simultaneous writing of the two diagram-carrying discs, characterized in that it comprises a fixed table mounted on the door at a distance from the interior face thereof, and a movable table pivotally mounted around an axis, said axis being carried by a rear portion of the door and substantially parallel to the articulation axis of said door, that a scripting member is fixed on a support mounted to pivot about an axis fixed substantially perpendicular to the plane of the inner face of the door, said support comprising on the one hand a lower portion passing between the fixed table and the inner face of the po rte, and on the other hand an upper portion connecting thereto, folded over the fixed table a short distance from the latter and on which said scripting member is mounted, and that drive means are provided between the swivel support the scripting member and the movable table so that by raising said movable table, said support pivots while releasing the scripting member, which then makes it possible to have a diagram-carrying disc on the fixed table, the other disc carrying -diagram can be arranged on said movable table after folding it and automatic return of said scripting member, in a position ready for registration.

Preferably, the drive means define a positive connection between the movable table and the support for the scripting member, said connection acting as well in one direction of pivoting of said movable table as in the other; in particular, a clearance is provided in the positive connection, so that by raising the movable table from its folded position, the pivoting of the support for the scripting member is initiated only after a predetermined pivoting angle of said table mobile, in particular an angle of the order of ten degrees.

According to a preferred embodiment, the drive means consist essentially of a first member rotating with the movable table, and a second member capable of sliding in a direction substantially parallel to the plane of the interior face of the door, said second member being able to cooperate at its rear end with said first member and, at its front end, with the lower portion of the support for the writing member; in particular, the first member is a pinion coaxial with the axis of the movable table, and the second member is an elongated slide, said slide preferably being arranged between the fixed table and the interior face of the door.

Advantageously, the front end of the elongated slide has a lug capable of cooperating with a lug of the support for the scripting member, the contact between said lug and said lug only taking place from a predetermined pivoting of the movable table; preferably also, the rear end of the elongated slide has holes allowing engagement with the drive pinion.

According to another advantageous embodiment, the writing device further comprises a drive lever mounted pivoting about a fixed axis substantially perpendicular to the plane of the inside face of the door, said lever being disposed between the fixed table and the inside face of the door so as to cooperate by its rear end projecting from the edge of said fixed table, when the door is closed, with a gripping member movement of the recorder case, and, by its front end, with the support of the scripting member; preferably, elastic means are provided for constantly returning the support for the scripting member to a recording position, that is to say pressing against the drive lever when the movable table is folded down.

It is interesting to provide that the elongated slide has two oblong slots in which pass the fixed axes of the drive lever and the support of the scripting member; in particular, the oblong slots make it possible to guide the elongated slider for a movement in translation of said slider in a direction substantially orthogonal to the pivot axis of the movable table. Furthermore, the elongated slide is subjected, at the rear part thereof, to the action of an elastic support blade carried by the fixed table, so as to reinforce the engagement between said slide and the drive gear; preferably also, the pivoting of the drive lever is limited by a stop provided on the fixed table.

According to another advantageous embodiment, the fixed table comprises at least one tab forming a return from the periphery of said fixed table in the zone of the scripting member, said return being raised so that the upper portion of the support the writing member and / or the writing member is spanned when said writing member is in the release position; in particular, the tab which is closest to the pivot axis of the support for the scripting member has an inclined upper edge, for example of about 5 °, to facilitate the positioning of the diagram-carrying disc disposed on the fixed table.

It is then advantageous to provide that the movable table has peripheral notches allowing passage of the legs of the fixed table when the movable table is folded down, said fixed table then comprising a lug forming a stop for said movable table in this position. In particular, an enlarged notch is provided to allow the passage of the upper part of the writing organ support when the movable table is folded down, said movable table then being able to directly contact the scripting organ, and the scripting organ has a central recess corresponding substantially to the thickness of the upper portion of the scripting body under which said scripting body is fixed.

Advantageously, the scripting member is arranged between the diagram-carrying discs so as to allow recording having the same angular reference as those obtained by the other scripting member (s) mounted in a manner known per se in the case of the recorder.

Furthermore, it is advantageous that the movable table comprises, in the vicinity of its axis of articulation, a means such as a flat which can cooperate with an elastic blade fixed on the rear portion of the door.

It is also possible to provide for the fixed table and / or the movable table to have substantially the shape of a half-crown, the central recess of which allows passage to the disk-holder plate of the door.

According to a variant of the invention, aimed at further facilitating the positioning of the diagram-carrying disc thanks to better clearance, the writing device further comprises a movable arm disposed between the fixed table and the interior face of the door, said movable arm having at least one tab forming a return above said fixed table in the area of the scripting member, said movable arm being able to be moved by an actuating means associated between a retracted position, in which the tab or tabs are adjacent to the edge of the fixed table, and a release position, in which the one or more legs are released from said fixed table and protect said scripting member which, when the movable table is raised, is automatically disposed under the return of the or said legs, which then facilitates the establishment of a diagram-carrying disc on said fixed table.

Preferably then, the movable arm is pivotally mounted around an axis substantially perpendicular to the plane of the interior face of the door; a particularly simple and compact structure is obtained by providing that the axis of the movable arm is the fixed axis around which the support of the scripting member pivots.

According to an advantageous characteristic of this variant, the mobile arm has substantially the shape of a U, one branch of which is crossed by the pivot axis of said arm, and the other branch of which slides under the fixed table during the movement of said arm so as to favor the guidance thereof.

Preferably then, elastic means are provided to constantly return the movable arm to the retracted position thereof.

According to another advantageous characteristic of this variant, the movable arm carries at least one protective tab under which is housed the front portion of the scripting member when the movable table is raised, as well as an additional tab under which passes permanently the outer edge of the rear portion of said writing member, which provides additional guidance of the writing member in all the angular positions of the support thereof.

Preferably, the actuating means associated with the movable arm is the scripting member itself, which directly drives said movable arm when the movable table is raised.

It is also advantageous that the device of the aforementioned variant further comprises a locking member making it possible to keep the movable table open, when the movable arm is in the extended position and that the scripting member has reached a release position in which it located beyond the periphery provided for the diagram-bearing disc; in particular, the locking member is disposed between the fixed table and the inside of the door.

When it is a device in which the drive means making it possible to release the scripting member are constituted by a pinion coaxial with the axis of the movable table, and an elongated slide cooperating with said pinion and with the support for scripting device, it is advantageous in this case for the locking device to cooperate with the elongated slide, so that the locking takes place automatically when said slide reaches a position corresponding to a predetermined degree of opening of the movable table . In particular, the locking member is mounted oscillating around an axis substantially parallel to the inner face of the door, and has a rear portion cooperating with a lateral extension of the elongated slide, and a front portion, the end of which faces an associated notch formed in the fixed table; in addition, it is advantageous to provide elastic means for constantly returning the locking member to a latching position with the lateral extension of the slide. It is moreover advantageous to provide, in addition to additional elastic means, in order to tend to recall the movable table towards a lowered position, such as a torsion spring acting at the hinge of the movable table, in particular according to cooperation. with the pinion coaxial with the axis of said movable table.

• la figure 1 montre un enregistreur dont la porte articulée est ouverte, équipé d'un dispositif inscripteur conforme à l'invention, les deux disques porte-diagramme destinés à être reçus n'étant pas représentés pour faciliter la clarté de la figure ;
• la figure 2 est une perspective éclatée illustrant les différents organes du dispositif inscripteur de la figure 1 ;
• la figure 3 est une vue de dessus partielle du dispositif inscripteur précédent, dont les organes mobiles sont dans la position illustrée à la figure 1 et correspondant à un dégagement latéral automatique de l'organe scripteur pour faciliter la mise en place du premier disque porte-diagramme ;
• la figure 4 est une vue en élévation partielle, correspondant à la position précédente, illustrant la zone d'articulation de la table mobile ;
• la figure 5 est une vue analogue à celle de la figure 3, mais avec les organes mobiles en position prête à l'enregistrement pour le premier disque porte-diagramme, et prête à la mise en place du deuxième disque porte-diagramme sur la table mobile rabattue ;
• la figure 6 est une vue en élévation correspondant à la position précédente ;
• les figures 7a à 7c illustrent schématiquement la mise en place des deux disques porte-diagramme, la table mobile étant respectivement en position d'ouverture maximale, puis en position de semi-fermeture, et enfin en position de fermeture ; il va de soi que l'extraction desdits disques se fera avec les mêmes opérations effectuées dans un ordre inverse,
• la figure 8 est une vue en perspective éclatée illustrant les différents organes d'un dispositif inscripteur conforme à une variante de l'invention, dans laquelle le dispositif inscripteur comporte un bras mobile supplémentaire, l'enregistreur étant ici représenté seulement par sa porte articulée, et les deux disques porte-diagramme destinés à être reçus n'étant pas représentés pour des besoins de clarté ;
• la figure 9 est une vue de dessus partielle du dispositif inscripteur précédent, dont les organes mobiles sont dans une position correspondant à un relevage partiel de la table mobile : dans cette position, l'organe scripteur et son support ont pivoté jusqu'à ce que la portion avant de l'organe scripteur arrive contre les pattes de protection du bras mobile supplémentaire, ce dernier étant encore en position rentrée ;
• la figure 10 est une vue partielle en élévation correspondant à la position précédente, illustrant la zone d'articulation de la table mobile du dispositif ;
• la figure 11 est une vue de dessus partielle analogue à celle de la figure 9, mais avec les organes mobiles représentés dans une position correspondant au relevage complet de la table mobile : pour arriver à cette position, l'organe scripteur a entraîné le bras mobile porteur de pattes de protection, et le dégagement obtenu rend extrêmement aisée la mise en place d'un disque porte-diagramme sur la table fixe ; par ailleurs, la table mobile est maintenue dans cette position, grâce à un organe de verrouillage disposé sous la table fixe et coopérant avec le coulisseau d'entraînement ;
• la figure 12 est une coupe partielle selon XII-XII de la figure 11, illustrant l'organe de verrouillage, avec, en traits mixtes, la position dudit organe lorsque l'opérateur l'actionne pour déverrouiller la table mobile.

Other characteristics and advantages of the invention will appear more clearly in the light of the description which follows and of the appended drawing, relating to a preferred embodiment of a writing device according to the invention, with reference to the figures where:

• Figure 1 shows a recorder whose hinged door is open, equipped with a writing device according to the invention, the two diagram holder discs intended to be received not being shown to facilitate clarity of the figure;
• Figure 2 is an exploded perspective illustrating the different organs of the writing device of Figure 1;
• Figure 3 is a partial top view of the previous writing device, whose movable members are in the position illustrated in Figure 1 and corresponding to an automatic lateral release of the writing member to facilitate the establishment of the first carrier disc diagram ;
• Figure 4 is a partial elevational view, corresponding to the previous position, illustrating the articulation zone of the movable table;
• Figure 5 is a view similar to that of Figure 3, but with the movable members in the position ready for recording for the first diagram-carrying disc, and ready for placing the second diagram-holding disc on the table mobile folded down;
• Figure 6 is an elevational view corresponding to the previous position;
• FIGS. 7a to 7c schematically illustrate the positioning of the two diagram-carrying discs, the movable table being respectively in the maximum open position, then in the semi-closed position, and finally in the closed position; it goes without saying that the extraction of said discs will be done with the same operations performed in reverse order,
• FIG. 8 is an exploded perspective view illustrating the various organs of a writing device according to a variant of the invention, in which the writing device comprises an additional movable arm, the recorder being here represented only by its hinged door, and the two diagram-carrying discs intended to be received not being shown for the sake of clarity;
• FIG. 9 is a partial top view of the preceding writing device, the movable members of which are in a position corresponding to a partial lifting of the movable table: in this position, the script member and its support have pivoted until the front portion of the scripting member arrives against the protective tabs of the additional movable arm, the latter being still in the retracted position;
• Figure 10 is a partial elevational view corresponding to the previous position, illustrating the articulation zone of the movable table of the device;
• Figure 11 is a partial top view similar to that of Figure 9, but with the movable members shown in a position corresponding to the complete lifting of the movable table: to reach this position, the scripting member has driven the movable arm carrier of protective tabs, and the clearance obtained makes it extremely easy to install a diagram-carrying disc on the fixed table; moreover, the movable table is held in this position, by virtue of a locking member disposed under the fixed table and cooperating with the drive slide;
• Figure 12 is a partial section along XII-XII of Figure 11, illustrating the locking member, with, in phantom, the position of said member when the operator actuates it to unlock the movable table.

The writing device which will be described is intended to equip a route recorder with two chart-carrying discs, commonly called a tachograph, but it goes without saying that the invention is not limited to such a type of recorder.

As illustrated in FIG. 1, the recorder comprises a housing 1, a door 2 hinged on said housing, and a drive mechanism (not shown) for the diagram-carrying discs. The route recorder shown can receive two diagram-carrying discs, that is to say a first disc used for recording media by scripting organs 3 (indicating the vehicle speed, the time of use, the distance traveled, and as an option the consumption or the engine speed), and a second disc diagram holder used to record the variation of an auxiliary parameter, for example the working and rest time of a second driver. In the following description, these two disc diagram carriers will be called first and second discs respectively for the sake of clarity, although the disc called second disc is in fact, as will be seen below, inserted first in the recorder.

As will be seen, the two diagram-carrying discs mounted superimposed isoaxically on a support ring or disc-holding plate 4 are spaced apart from one another on at least a part of these corresponding to inter-disc recording: in this case, the two discs are spaced apart from each other only on an angular sector thereof.

There is thus provided a fixed table 5 mounted on the door 2 at a distance from the inner face 6 thereof, and a movable table 7 pivotally mounted about an axis, here materialized by reinforcements 8, said axis being carried by a rear portion 9 of the door and substantially parallel to the hinge axis of said door.

In accordance with an essential aspect of the present invention, a scripting member 10 is fixed on a support 11 mounted to pivot around a fixed axis 12 substantially perpendicular to the plane of the interior face 6 of the door, and drive means are provided. between the pivoting support 11 of the scripting member and the movable table 7 so that raising said movable table, said support pivots by releasing the scripting member 10, which then makes it possible to have a diagram-carrying disc on the fixed table 5, the other diagram-carrying disc being able to be placed on said movable table after folding down this and automatic return of said scripting member to a position ready for registration.

The precise structure of the essential constituent organs of the device of the invention will be described in detail with reference to FIG. 2, but it is nevertheless interesting to quickly examine how this device looks in the view of FIG. 1, corresponding in reality what the operator can look at.

The fixed table 5 is mounted on the door 2 by means of a plurality of lugs 13, so as to constitute a support plane substantially parallel to the face 6 of the door, but at a distance therefrom. The support for scripting member 11, capable of pivoting parallel to the plane of the interior face 6 of the door, comprises a lower portion 14 passing between the fixed table 5 and the interior face of the door, and an upper portion 15 connecting, folded over the fixed table 5 at a short distance from the latter, the scripting member 10 being precisely fixed on this upper portion. Thus, the scripting member 10 can be erased when the movable table 7 is raised, which considerably facilitates the positioning of the second disc, said scripting member being automatically returned to the position ready for writing when the operator fold the movable table 17 in order to place the first disc on said movable table before closing the door.

The drive means provided in the context of the invention must preferably define a positive connection between the movable table 7 and the support for the scripting member 11, said link acting both in a direction of pivoting of said movable table and in the other. In addition, as will be better understood on examining FIGS. 3 and 5, a clearance is preferably provided in the positive connection, so that by raising the movable table 7 from its folded position, the pivoting of the support for scripting member 11 is initiated only after a predetermined pivot angle of said movable table, in particular an angle of the order of ten degrees.

It goes without saying that different structures are possible for producing the aforementioned drive means, but it is advantageous for the robustness, simplicity and reliability of the device, to ensure that the drive means are essentially constituted by a first member rotating with the movable table 7, and a second member capable of sliding in a direction substantially parallel to the plane of the interior face 6 of the door, the structure of said second member being such that it can cooperate at its rear end with said first organ and, by its front end, with the lower portion 14 of the support for the scripting organ 11. An embodiment is illustrated here that is both simple and efficient, by providing that the first organ is a pinion 16 coaxial with the axis of the movable table 7, and that the second member is an elongated slide 17, the precise structure of these members being described in more detail in the following of the escription.

FIG. 1 finally makes it possible to distinguish a power take-off member 18, provided in a manner known per se in the housing 1 of the recorder, said cooperating member, when the door of the recorder is closed, with a lever 19 pivotally mounted about a fixed axis 20 substantially perpendicular to the plane of the interior face 6 of the door. As is clear from Figure 1, the drive lever 19 is disposed between the fixed table 5 and the inner face 6 of the door so as to cooperate, by its rear end projecting from the edge of said fixed table, and when the door 2 is closed, with the power take-off member 18, and, by its front end, with the support for the script member 11 held in abutment by a spring 21 against the said lever 19, as will be readily understood by look at the exploded view of figure 2.

One could naturally realize the drive means according to an intermediate lever system, or with a rack, or even by means of a torsion spring; however, the elongated slide system cooperating by a meshing connection with a pinion is extremely simple and economical to produce, and moreover its reliability is perfectly compatible with repeated maneuvers. Figure 1 makes it possible to distinguish, at the rear end of the elongated slide 17, an assembly of holes 22 allowing the engagement with the teeth 23 of the drive pinion 16. At the front end of the slide, there is provided a tab 24 which can cooperate with a lug 25 of the support for scripting member 11, the contact between said leg and said lug preferably intervening only from a predetermined pivoting of the movable table 7. Finally, it will be noted that most of the movable members of the writing device which are mounted on the door of the recorder, is protected by the fixed table 5 which also functions as a cover, these members in no way interfering with the plane of the said table on which the second disc is to be disposed: the only protruding parts are a portion of the support for the scripting member 11, l rear end of the drive lever 19, and the rear end of the elongated slide 17.

Let us now examine the exploded view of FIG. 2, which makes it possible to clearly distinguish the particular structure of each of the organs which have just been described.

The inner face 6 of the door 2 has two holes 26, 27, respectively receiving the axes 12 and 20 whose direction is perpendicular to the plane of said inner face. It is advantageous, in order to improve the compactness of the device, to be able to arrange the elongated slide 17 in the vicinity of the lower portion 14 of the support for the scripting member and of the lever 19: for this purpose, the elongated slide 17 has two oblong slots 28, 29 through which the fixed axes 12, 20 pass, so that said axes fulfill both a pivot axis function for the movable members 11 and 19, as well as a guide function for the movement of translation of the slide 17 in a direction substantially orthogonal to the pivot axis 100 of the movable table 7. It will also be noted that the axes 12 and 20 contribute to the correct positioning of all the stacked parts, the axis 12 passing through the light 28 of the slide 17, the bore 31 of the support for the scripting member 11, and penetrating without being flush with the bore 38 of the fixed table 5, the axis 20 passing in turn through the lumen 29 of the slide 17, the bore 30 of the drive lever 19, and penetrating without being flush with the bore 39 of the fixed table 5.

It is advantageous to provide a means making it possible to limit the angular movement of the drive lever 19: a solution illustrated here consists in providing a window 32 in said drive lever 19, this window being able to cooperate with a tab 33 provided at level 'A notch 34 of the fixed table 5, said tab 33 projecting from the underside of this table to enter the window 32 and thus fulfill its function as a stop.

As has been said above, it is advantageous to provide an elastic means tending to keep the support of the scripting member 11 in abutment against the drive lever 19, when one is in the recording position: at this Indeed, a spring 21 is provided, the ends of which are mounted on a projecting tab 35 of the lower portion 14 of the recording member support 11 on the one hand, and on a projecting tab 36, arranged downwards like the previous projecting tab, formed in the vicinity of the periphery of the fixed table 5. Thanks to this arrangement, the rear end 66 of the support for scripting member 11 is held in abutment between the front end 67 of the drive lever 19, as will also be seen on examining Figure 5.

As explained above, the positive drive of the elongated slide 17 is ensured by the pivoting of the movable table 7 by means of the teeth 23 of the pinion 16: it may prove advantageous to provide an elastic means exerting a support force on the rear end of the elongated slide, as here a support blade 37 carried by the fixed table 5, so as to reinforce the engagement between said slide and the drive pinion 16.

It should be noted that the fixed table 5 also has lugs (here two) 40, 41 forming a return from the periphery of said fixed table in the zone of the scripting member 10, said return being raised so that the portion upper 15 of the writing organ support 11 and / or the writing organ 10 is spanned when said writing organ is in the release position. The upper branch of the legs 40, 41 protects the scripting member 10, and also makes it possible to facilitate the insertion of the second disc insofar as the scripting member 10 is in abutment against these legs, without risk of insertion of the disc at above said organ writer. To this end, it may be advantageous for the tab 40, which is closest to the pivot axis 12 of the support for the scripting member 11, to have an inclined upper edge (i.e. an edge raised towards the rear of the door), for example by about 5 °, to improve the aforementioned effect. It should be noted that the tabs 40, 41 also make it possible to ensure that the scripting member 10 will in no case exceed the periphery of the interior face of the door in the release position of said scripting member. However, these legs 40, 41 should not produce an undesirable excess thickness: it is then advantageously provided, on the movable table 7, peripheral notches 42, 43 allowing the passage of the legs 40, 41 of the fixed table 5 when the movable table 7 is folded down, said fixed table then preferably comprising a lug 44 forming a stop for said movable table in this position. It is moreover advantageous to ensure that the notch 42 is dimensioned in such a way that passage is possible for the upper part 15 of the support for scripting member 11 when the movable table 7 is folded down, as is better visible in Figure 5: this allows for direct contact between the scripting member 10 and the movable table 7 in the folded position thereof.

It is then advantageous to conform the scripting member 10 in order to facilitate this direct contact: the scripting member thus comprises a rear portion 45 fixed under the upper portion 15 of the writing member support (an example is illustrated pair of rivets 49, and a pair of pawns 50 driven flush), and a front portion 46 having an inscription tip 47, the portions 45 and 46 being connected by a central recess 48 corresponding substantially to the thickness of the portion upper 15 of the support of scripting member 11. In this way, it is ensured direct contact between the front end of the writing member and the underside of the movable table 7 when the latter is in the folded position.

The fixed table 5 and / or the mobile table 7 can be complete or partial as the case may be. Here, the fixed table 5 has the shape of a half-crown, the central recess 51 of which allows passage to the disc-holder plate 4 of the door, while the movable table 7 is complete, with a central recess for the same passage of the disc tray.

It is advantageous to provide a relatively thin movable table 7, in which case it is necessary to add to it a relatively rigid rear support such as the support 53 illustrated in FIG. 2 (the mobile table can then be made of sheet metal with a thickness of about 5 / 10th of a millimeter). The support 53, fixed for example by riveting, has two connecting wings 54 ending in a bearing portion 8 ending the pivot axis 100 already mentioned above. Two rods 59 are received in these bearings to form the articulation axis of the movable table 7. It is advantageous to provide a latching or abutment means making it possible to limit the lifting angle of the movable table: here provided a flat 55 on one of the bearings 8, capable of cooperating with an elastic blade 56 fixed on the heel 9 of the door, for example by means of rivets 58, said elastic blade ending in the curved end 57 which is resting on the lateral surface of the bearing 8, and in particular on the flat part 55 in the predetermined maximum open position.

FIG. 2 also illustrates a particularly simple embodiment of the meshing pinion 16, with only three meshing teeth 23, and, on its external face, a projecting groove 61 received in a homologous groove 60 of the corresponding bearing 8, this which very simply secures in rotation between movable table 7 and drive pinion 16.

It is important to note that the small thickness of the movable table 7 makes it possible to obtain an extremely reduced inter-disc distance: when the two discs are arranged on the drive shaft 62, there is a natural contact of the two discs in the central drive zone, and the fixing lug 63 holds said discs against the support ring 4, which makes it possible to have a centering support and a common fixing for the two discs, without spacer, with a completely driving satisfactory. In addition, the aforementioned small thickness is sufficiently small to avoid any distortion of the discs. It will also be noted that the only relatively vulnerable element of the device, that is to say the scripting member 10, is systematically protected when the movable table 7 is raised, thanks to the legs 40, 41 under which it comes stay in the release position.

FIG. 3 partially illustrates the position of the various members when the movable table is in the raised position, that is to say when the scripting member is in the lateral release position.

The slide 17 is in the rear position, thanks to the engagement of the drive pinion 16, and its lug 24 exerts its action against the lug 25 of the support of the writing organ 11, maintaining the writing organ 10 in the release position against the action of the tension spring 21. It goes without saying that in this position the drive lever 19 does not fulfill any role, the elongated slide 17 simply passing under said lever, and moving thanks to the light 29 through which the pivot axis 20 of the drive lever 19 passes. The detail in FIG. 4 makes it possible to clearly understand the action of the rear end of the slide, on which the elastic blade 37 of the fixed table exerts its support action.

When the movable table 7 is folded down, the slider 17 moves forward, so that, under the action of the spring 21, the support for the scripting member 11 gradually returns to the position ready for recording. As can be seen in FIG. 5, the support for the scripting member 11, or more precisely the rear end 66 thereof, comes into contact with the drive lever 19, or more exactly of the front end 67 thereof: this corresponds to the position in FIG. 5, in which it will be observed that the writing tip 47 of the scripting member is at the diameter 200 of the door, diameter 200 which corresponds, when the door is in the closed position, at the writing line of the scripting members 3 of the housing, which makes it possible to have a recording having the same angular references for the two diagram-carrying discs. In fact, this support position of the writing organ support is reached before the movable table 7 is completely folded down, so that the complete flap of said movable table causes a slight additional displacement of the slide 17 towards the front, and thus the creation of the game already mentioned above (the final position corresponds to that of Figures 5 and 6). FIG. 6 makes it possible to distinguish the second disc 64, part of which passes over the fixed table 5 and under the scripting member 10, as well as the first disc 65 disposed on the movable table 7 once said table completely folded down. FIG. 6 shows in particular that the inter-disc distance at the level of the recording area by the scripting member 10 is extremely reduced.

• Figure 7a, la table mobile 7 est relevée de son angle maximum de pivotement α (soit environ 60°), et l'opérateur peut aisément disposer le deuxième disque 64 en passant le bord extrême de celui-ci sous la pointe de l'organe scripteur au voisinage des pattes 40, 41 de la table fixe 5 ; en rabattant la table mobile 7 sur un angle ß (soit environ 50°), l'opérateur place ladite table dans une position illustrée en pointillés sur la figure 7a (flèche 67), et l'organe scripteur 10 est alors automatiquement dégagé des pattes (flèche 68), ledit organe scripteur se relevant alors légèrement du fait de son élasticité naturelle.
• Figure 7b, la table mobile 7 fait alors un angle γ avec sa position de fermeture complète, mais le support organe scripteur se trouve déjà en position angulaire correspondant à la position prête à l'enregistrement ; en continuant à rabattre la table mobile 7, un contact direct se produit entre ladite table et l'organe scripteur, réalisant un excellent appui contre le deuxième disque 64 (position illustrée en pointillés).
• Figure 7c, la table mobile 7 est complètement rabattue, et l'opérateur peut disposer le premier disque 65 sur ladite table, ledit disque venant se superposer directement sur le deuxième disque 64 dans la zone centrale d'entraînement ; l'opérateur rabat alors la patte 63, et les deux disques 64, 65 sont alors parfaitement centrés et fixés, en position prête à l'enregistrement après fermeture de la porte.

The operations of handling the writing device of the invention will not pose any particular problem for the operator, FIGS. 7a, 7b, 7c schematically show how the insertion of the two diagram-carrying discs is carried out (the extraction being done in a reverse order):

• Figure 7a, the movable table 7 is raised from its maximum pivot angle α (or about 60 °), and the operator can easily arrange the second disc 64 by passing the extreme edge thereof under the tip of the member writer in the vicinity of the legs 40, 41 of the fixed table 5; by folding the movable table 7 at an angle ß (that is to say approximately 50 °), the operator places said table in a position illustrated in dotted lines in FIG. 7a (arrow 67), and the scripting member 10 is then automatically released from the legs (arrow 68), said scripting member then rising slightly due to its natural elasticity.
• Figure 7b, the movable table 7 then makes an angle γ with its completely closed position, but the support for the writing organ is already in the angular position corresponding to the position ready for recording; by continuing to fold down the movable table 7, direct contact occurs between said table and the scripting member, providing excellent support against the second disc 64 (position illustrated in dotted lines).
• Figure 7c, the movable table 7 is completely folded down, and the operator can place the first disc 65 on said table, said disc coming to be superimposed directly on the second disc 64 in the central drive zone; the operator then flaps the tab 63, and the two discs 64, 65 are then perfectly centered and fixed, in the position ready for recording after closing the door.

The writing device which has just been described thus allows a particularly precise recording mode by means of a scripting member arranged between two diagram-carrying discs, which are perfectly fixed and centered without the risk of a relative sliding which would introduce an error. in the interpretation of the recordings.

Although this writing device is more particularly intended for use with two diagram-carrying discs, it should be noted that recording with a single disc is also possible: it then suffices to place this disc directly on the mobile table, as s 'It was a natural support that would represent the inner face of the hinged door, without the need to raise said movable table.

We will now describe a variant of the recording device of the invention, aimed at facilitating the installation of a diagram-carrying disc on the fixed table, when the movable table is raised.

In fact, according to the embodiment described above, the fixed table had at least one tab forming a return from the periphery of said fixed table in the area of the scripting member, said return being raised so that the upper portion of the support of the writing organ and / or the writing organ is spanned when the said writing organ is in the release position; in particular, the tab closest to the pivot axis of the support for the scripting member had an inclined upper edge, for example of approximately 5 °, to facilitate the positioning of the diagram-carrying disc disposed on the fixed table .

However, it appeared that such fixed legs, certainly favorable for the protection of the scripting member when the movable table was raised, could in certain cases still make it difficult to install the diagram-carrying disc, because the edge of the disc had to be inserted under the legs and the scripting organ, that is to say in a free space whose height was of the order of 1 to 1.5 mm.

In the variant described below, with reference to FIGS. 8 to 12, the structure of the device of the invention has been slightly modified to improve the clearance and further facilitate the insertion of a diagram-carrying disc.

In the exploded view of FIG. 8, a distinction is thus made between the various constituent elements of the modified writing device, some of these bodies already forming part, possibly with a different structure, of the writing device described above. Therefore, the constituent bodies already described with reference to FIGS. 1 to 7c, and taken up in the context of the present variant with reference to FIGS. 8 to 12, will bear the same reference increased by 100.

There is thus a door 102, normally articulated on the housing (not shown) of the device, with a support ring or disc carrier 104. A fixed table 105 is mounted on the door 102, at a distance from the inner face 106 from that - Here: we will come back in detail on the particular structure of the fixed table 105, because it differs significantly from that described in the previous variant. There is also a movable table 107, pivotally mounted around an axis 300 by reinforcements 108, said axis being carried by a rear portion 109 of the door. There is also a scripting member 110, fixed on a support 111 mounted to pivot about a fixed axis 112; it was already provided in the previous variant that the support 111 pivots while releasing the scripting member 110, so as to be able to have a diagram-carrying disc on the fixed table 105, the other diagram-carrying disc being able to be placed on said table mobile after folding it down and automatic return of the scripting device to a position ready for registration. The fixed table 105 mounted on the door 102 by legs 113 (here three legs), so as to constitute a support plane substantially parallel to the face 106 of the door, but at a distance therefrom. The support for scripting member 111 comprises a lower portion 114 passing between the fixed table 105 and the inner face of the door, and an upper portion 115 which is connected thereto, the writing member 110 being precisely fixed on this upper portion. There is also a pinion 116 coaxial with the axis of the movable table, and an elongated slide 117 which can move in a direction substantially parallel to the plane of the inner face 106 of the door. A lever 119, pivotally mounted about a fixed axis 120, can cooperate with a power take-off member (not shown); the support for the scripting member 111 is held in abutment by a spring 121 against the lever 119. At the rear end of the elongated slide 117, a set of holes 122 allows the engagement of the drive pinion 116 with teeth 123. At the front end of the slide 117, a tab 124 is provided which cooperates with a lug 125 of the support for scripting member 111.

The inner face 106 of the door 102 has two holes 126, 127, respectively receiving the axes 112 and 120, said axes passing through oblong slots 128 and 129 of said slide. Thus, axis 112 passes through the light 128 of the slide 117, through a hole 131 in the support for the scripting member 111, and penetrates without being flush with a hole 138 in the fixed table 105; the axis 120, for its part, passes through the slot 129 of the slide, in a hole 130 in the drive lever 119, and penetrates without touching in a hole 139 in the fixed table 105. To limit the angular movement of the drive lever 119, a window 132 has been provided in said lever, said window cooperating with a tab 133 provided at a notch 134 of the fixed table 135. The spring 121 tending to hold the support for the scripting member 111 in abutment against the drive lever 119, is mounted at its ends on two projecting legs 135 and 136. It will also be noted the presence of a support blade 137, carried by the fixed table 105, and exerting a support force on the rear end of the elongated slide so as to reinforce the engagement between said slide and the drive pinion 116.

The scripting member 110 comprises a rear portion 145 fixed under the upper portion 115 of the support of the writing member by rivets 149 and pins 150, and a front portion 146 having a writing tip 147; the portions 145 and 146 are connected by a central recess 148. It should be noted that the rear portion 145 here has a curved shape following the curved outer contour of the upper portion 115 of the support for the scripting member, this in order to define a blade outer guide as will be explained later.

The fixed table 105 has the shape of a half-crown, the central recess 151 of which allows the disc carrier plate 104 to pass through the door, while the movable table 107 is complete, with a central recess 152 for the same passage of the disc tray. A relatively rigid rear support 153 is added to the movable table 107, in order to reinforce the latter, said support having two connecting wings 154 ending in a bearing portion 108 defining the pivot axis 300 already mentioned above. Two rods 159 are received in these bearings to form the axis of articulation of the movable table 107. The rotational attachment between the movable table 107 and the drive pinion 116 is here provided by a projecting groove 161 of the pinion 116, and a corresponding groove 160 of the corresponding bearing 108.

The small thickness of the movable table 107 makes it possible to obtain an extremely reduced inter-disc distance: when the two diagram-carrying discs are arranged on the drive shaft 162, there is a natural contact of the two discs in the central area drive, and the fixing lug 163 holds said discs against the support crown 104. When the movable table 107 is folded down, the slide 117 moves forward, and therefore the support for the scripting member 111 gradually returns to the position ready for recording. The rear end 166 of the writing organ support 111 comes into contact with the front end 167 of the drive lever 119, and the writing tip 147 of the writing organ reaches the diameter 200 of the door ( diameter indicated in FIGS. 9 and 11), which makes it possible to have a recording having the same angular references for the two diagram-carrying discs.

In the previously described variant, the fixed table had legs forming a return from the periphery in the zone of the scripting organ: in this way, the upper branch of the legs protected the scripting organ, but this implied that the operator inserted the diagram-carrying disc under these legs and under the scripting member, that is to say in a free space whose height was of the order of 1 to 1.5 mm. In the context of this variant, it is in no way waived the principle of protection of the scripting organ, but the structure of the device has been modified so as to allow greater clearance of the latter from the periphery of the fixed table.

For this purpose, there is provided a movable arm 170 disposed between the fixed table 105 and the inner face 106 of the door, said movable arm having at least one tab forming a return above said fixed table in the area of the scripting member 110: according to a characteristic of this new variant, the movable arm 170 can be moved by an associated actuation means between a retracted position, in which the abovementioned tab or tabs are adjacent to the edge of the fixed table 105, and a release position, in which the one or more legs are released from said fixed table and protect the scripting member 110, the latter being automatically disposed under the return of said one or more legs when the movable table is raised, which then considerably facilitates the installation of a diagram-carrying disc on said fixed table. Thus, the protective stop system associated with the scripting member is no longer rigidly secured to the fixed table, but on the contrary carried by a movable member authorizing the release of said legs relative to the periphery of the fixed table.

Given the small space available between the fixed table 105 and the upper face 106 of the door, the parts used to make this movable stop system should be reduced to the absolute minimum, without this affecting the efficiency of the system. . Thus the movable arm 170 is advantageously mounted to pivot about an axis substantially perpendicular to the plane of the interior face 106 of the door, this axis preferably being the fixed axis 112 around which the support 111 of the scripting organ. Thus, the movable arm 170 has substantially the shape of a flat U, one branch 171 of which is crossed by the pivot axis 112 of said arm, and the other branch 172 of which slides under the fixed table 105 during the movement of said arm , so as to favor the guidance thereof. It is useful to further provide elastic means, shown here in the form of a spring 173, to constantly return the movable arm 170 to the retracted position thereof. In the example described, the movable arm 170 carries two protective tabs 140, 141, under which is housed the front portion 146 of the scripting member 110 when the movable table 107 is raised; the movable arm 170 also carries an additional tab 174 under which the outer edge of the rear portion 145 of the scripting member 110 permanently passes, which provides additional guidance of the scripting member in all the angular positions of the support 111 of this one. In the exploded view of FIG. 8, there is only a partial distinction between the rear portion 145 of the scripting member, but the views of FIGS. 9 and 11 which will be described below make it possible to clearly distinguish the outer edge 175 of this rear portion, which protrudes slightly from the portion 115 of its support: it is easy to see that this edge 175 in the form of a curved blade always passes under the additional tab 174 for all the angular positions of the scripting member.

It is also appropriate to organize in a simple and reliable manner the actuating means associated with the movable arm 170: according to a particularly advantageous embodiment illustrated here, this function is performed by the scripting member 110 itself, which directly drives said movable arm when the movable table 107 is raised. Thus, when we begin to raise the movable table 107, the slide 117 pivots the support for the scripting member 111 from its writing position to a partial release position corresponding to the illustration in FIG. 9. In this position, the front portion of the scripting member is housed under the protective tabs 140, 141. It is then that begins, when we continue to raise the movable table 107, a new additional release phase, here performed by direct drive. Indeed, the scripting member rotates the movable arm 170 against the action of the spring 173, until one reaches the position illustrated in Figure 11. In this new release position, it is easy to see that the access to the upper face of the fixed table 105 is practically total, so that the operator can set up a diagram-carrying disc without risk of catching the scripting member, and without having to carry out an insertion from the periphery of it in a space of very low height. After the installation of a diagram disc, the movable table 107 is then folded down, which brings the various elements first into the position of FIG. 9, then into the recording position in which the scripting member has still rotated toward the center of the disc. The device is then ready for the installation of a second diagram-carrying disc, placed on the movable table 107 thus folded down. In order to prevent the movable table 107 from being in abutment on the diagram-carrying disc put in place first, a stop system is advantageously provided, here illustrated by a lug 184 of the fixed table 105, and a homologous tab 185 projecting from the periphery of said movable table. The movable table 107 also has, as in the context of the device of the previous variant, a peripheral notch 142 dimensioned in such a way that passage is possible for the upper part 115 of the support for the scripting member when said movable table is folded: this allows for direct contact between the scripting member 110 and the movable table 107 in the folded position thereof.

It is also advantageous to further provide a locking member making it possible to keep the movable table 107 open when the movable arm 170 is in the extended position, and when the scripting member 110 has reached a release position in which it is located at -beyond the periphery provided for the chart disc. This function is here provided by a locking member 176, illustrated with a slight lateral offset in Figure 1 so as not to complicate the understanding thereof. The locking member 176 is preferably disposed between the fixed table 105 and the inner face 106 of the door, and it is designed so as to be able to cooperate with the elongated slider 117, so that the locking takes place automatically when said slider has reached a position corresponding to a predetermined degree of opening of the movable table 107. In the particular embodiment shown here, the locking member 176 is mounted oscillating around an axis substantially parallel to the inner face 106 of the door ; this axis is represented here by two lateral pins 177 which can be clipped under two tabs (not shown) projecting from the underside of the fixed table 105. The locking member thus has a rear portion 180 cooperating with a flange 181 with a lateral extension 183 of the elongated slide 117, and a front portion 178 the end of which is opposite an associated notch 179 formed in the fixed table 105. Note the presence of a spring 182 provided for constantly recalling the locking member 176 to a latching position with the lateral extension 183 of the slide 117.

FIG. 12 makes it possible to better distinguish the zone of the locking member 176. It will be noted in particular the presence of a groove 190 provided on the underside of the fixed table 105, making it possible to receive part of the rim 181 when the locking member 176 is not in the latching position. Thus, when the operator begins to raise the movable table 107, the lateral extension 183 of the slide 117 slides under the rear portion 180 of the locking member 176: this corresponds for example to the position illustrated in FIG. 9. When the operator continues to raise the movable table 107, the slide back 117 makes it possible to reach the snap point at which the rim 181 of the locking member suddenly switches to the stop position under the action of the spring 182: this corresponds to the position illustrated in FIG. 11. The operator can then safely place the diagram-carrying disc 400 (FIG. 12), without risk seeing the scripting member unexpectedly return above the fixed table 105. Once the diagram-carrying disc is in place, the operator just has to press lightly with a finger on the diagram-holding disc 400 in the region of the portion 178 of the locking member, as shown diagrammatically in FIG. 12: this unlocking then authorizes the lowering of the movable table 107. It goes without saying that any other type of member could be envisaged locking, insofar as the structure thereof nevertheless remains compatible with the requirements of space and reliability.

It is possible to envisage additional means facilitating a natural return of the movable table to the folded position. In the embodiment illustrated in FIG. 8, this function is fulfilled by a torsion spring 187, housed in a notch 186 of the rear extension 109, and acting at the hinge of the movable table 107, for example according to a cooperation with the pinion 116 coaxial with the axis of said movable table. In this case, this cooperation is illustrated by a notch 188 formed in the periphery of the pinion 116, notch receiving a branch of the torsion spring 187. This notch is also visible in FIG. 10, which illustrates the articulation zone when the movable table 107 is in the raised position.

Other arrangements may of course be provided, so as to make the various constituent bodies compatible with other optional functions. This is how we note the presence of a curved oblong opening 189 made in the fixed table 105, this opening allowing the passage of a writing stylus corresponding to a tachometer for the diagram-carrying disc of the second driver.

This writing device again allows a particularly precise recording mode by means of a scripting member arranged between two diagram-carrying discs, which are perfectly fixed and centered, without the risk of a relative sliding which would introduce an error in the interpretation. recordings.

As for the device conforming to the previous variant, recording with a single disc is naturally possible: it then suffices to place this disc directly on the mobile table, as if it were a natural support that would represent the inside of the hinged door, without it being necessary to raise said movable table.

The invention is not limited to the embodiments which have just been described, but encompasses any variant which would incorporate the features of the claims.

Claims (35)

1. Pen means for a recorder having two chart-bearing discs, the said recorder comprising a housing (1), a window (2) hinged to the said housing and a mechanism for driving the chart-bearing discs, the said pen means comprising supporting means and pen means by which records may be inscribed simultaneously on two chart-bearing discs, characterised in that it comprises a fixed table (5; 105) mounted on the window (2) at a distance from the inside face (6; 106) of the latter and a moving table (7; 107) pivotally mounted about an axis (100; 300), the said axis being borne by a rear portion of the window and substantially parallel to the hinge axis of the said window, in that a pen member (10; 110) is fixed on a support (11; 111) pivotally mounted about a fixed axis (12; 112) substantially perpendicular to the plane of the inner face (6; 106) of the window, the said support comprising a lower portion (14; 114) passing between the fired table (5; 105) and the inner face of the window, and also an upper portion (15; 115) connected thereto which is folded back against the fixed table (5; 105) at a short distance therefrom and on which the said pen member is mounted, and in that drive means (16, 17; 116, 117) are provided between the pivoting support (11; 111) of the pen means and the moving table (7; 107) in such a way that when the said moving table is lifted the said support pivots to release the pen member (10; 110) by which means a chart-bearing disc can then be placed on the fixed table (5; 105), the other chart-bearing disc having been placed on the said moving table after the latter had been folded back and the said pen member can automatically return into a position ready for writing.

2. Pen means according to claim 1, characterised in that the drive means (16, 17; 116, 117) provide a positive link between the moving table (7; 107) and the pen member support (11; 111) the said link acting in both the directions in which the said moving table pivots.

3. Pen means according to claim 2, characterised in that play is provided in the positive link in such a way that when the moving table (7; 107) is lifted from its folded back position, the support for the pen member (11,; 111) only begins to pivot after the said moving table has pivoted through a predetermined angle, in particular an angle of the order of some 10 degrees.

4. Pen means according to either of claims 2 or 3, characterised in that the drive means essentially comprise a first member (16; 116) which turns with the moving table (7; 107), and a second member (17; 117) which can slide in a direction substantially parallel to the plane of the inside face (6; 106) of the window, the said second member being capable of acting through its rear extremity with the said first member and through its front extremity with the lower portion (14; 114) of the support for the pen member (11; 111).

5. Pen means according to claim 4, characterised in that the first member is a pinion (16; 116) which is coaxial with the axis of the moving table (7; 107) and the second member is an elongated slide (17; 117).

6. Pen means according to claim 5, characterised in that the elongated slide (17; 117) is located between the fixed table (5; 105) and the inner slide (6; 106) of the window.

7. Pen means according to claim 3 and any one of claims 5 and 6, characterised in that the forward end of the elongated slide (17; 117) has an end member (24; 124) which can act together with a projection (25; 125) on the pen support (11; 111), contact between the said end member and the said projection only occurring when the moving table has pivoted through a predetermined angle (7; 107).

8. Pen means according to one of claims 5 to 7, characterised in that the rear end of the elongated slide (17; 117) has holes (22; 122) by which it may be meshed with the drive pinion (16; 116).

9. Pen means according to any one of claims 1 to 8, characterised in that it also comprises a drive lever (19; 119) pivotally mounted about a fixed axis (20; 120) which is substantially perpendicular to the plane of the inner face (6; 106) of the window, the said lever being located between the fired table (5; 105) and the inner side (6; 106) of the window so as to act by means of its rear extremity projecting beyond the edge of the said fired table when the window (2; 102) is closed in association with a movement sensing member (18) of the recorder housing, and through its front extremity with the pen member support (11; 111).

10. Pen means according to claim 9, characterised in that elastic means (21; 121) are provided to return the pen support (11; 111) at all times towards a recording position, i.e. pressing against the drive lever (19; 119) when the moving table (7; 107) is folded back.

11. Pen means according to claim 6 and either of claims 9 or 10, characterised in that the elongated slide (17; 117) has two oblong holes (29, 28; 129, 128) through which the fired axes (20, 12; 120, 112) of the drive lever (19; 119) and the pen support (11; 111) pass.

12. Pen means according to claim 11, characterised in that the oblong holes (28, 29; 128, 129) make it possible to guide the elongated slide (17; 117) during lateral movement of the said slide in a direction substantially at right angles to the pivot axis of the moving table (7; 107).

13. Pen means according to claim 11, characterised in that the elongated slide (17; 117) is subjected at the rear part thereof to the action of an elastic bearing blade (37; 137) borne by the fired table (5; 105) in such a way as to ensure meshing between the said slide and the drive pinion (16; 116).

14. Pen means according to one of claims 9 to 13, characterised in that the pivoting of the drive lever (19; 119) is limited by a stop (33; 133) provided on the fixed table (5; 105).

15. Pen means according to one of claims 1 to 14, characterised in that the fired table (5) comprises at least one tab (40, 41) forming an upstand at the edge of the said fired table in the vicinity of the pen member (10), the said upstand being raised in such a way that the upper portion (15) of the pen support (11) and/or the pen member (10) is straddled when the said pen member is in the released position.

16. Pen means according to claim 15, characterised in that the tab (40) which is closest to the pivot axis (12) of the pen member support (11) has an upper edge which is inclined, e.g. by about 5°, to allow the chart-bearing disc laid on the fixed table (5) to be placed in position.

17. Pen means according to either of claims 15 or 16, characterised in that the moving table has peripheral notches (42, 43) which allow the tabs (40, 41) of the fixed table (5) to pass through when the moving table (7) is folded back, the said fired table then incorporating a projection (44) forming a stop for the said moving table in that position.

18. Pen means according to claim 17, characterised in that an enlarged notch (42) is provided to allow the upper part (15) of the pen member support (11) to pass through when the moving table (7) is folded back, the said moving table being then in direct contact with the pen member (10).

19. Pen means according to claim 18, characterised in that the pen member (10) has a central offset (48) substantially corresponding to the thickness of the upper portion (15) of the pen support (11) below which the said pen member is attached.

20. Pen means according to one of claims 1 to 19, characterised in that the pen member (10) is located between the chart-bearing disc in such a way that a record having the same angular reference as those obtained by the other writing member or members (3) which are mounted in the recorded housing in a known manner is obtained.

21. Pen means according to one of claims 1 to 20, characterised in that the moving table (7) has means in the vicinity of its hinge axis whereby a flat member (55) which can act together with an elastic blade (56) attached to the rear portion of the window (sic).

22. Pen means according to one of claims 1 to 21, characterised in that the fired table (5) and/or the moving table (7) substantially have the shape of a half-ring, wherein the central space allows the disc-bearing plate (4) of the window to pass.

23. Pen means according to one of claims 1 to 14, characterised in that it also comprises a moving arm (170) located between the fired table (105) and the inside face (106) of the window, the said moving arm having at least one tab (140, 141, 174) upstanding above the said fired table in the vicinity of the pen member (110), the said moving arm being capable of being moved by associated drive means between an engaged position in which the tab or tabs (140, 141, 174) are adjacent to the edge of the fired table (105) and a disengaged position in which the said tab or tabs are disengaged from the said fired table and protect the said pen means which when moving table (107) is lifted is automatically located beneath the return of the said tab or tabs thus making it easier to locate a chart-bearing disc on the said fired table.

24. Pen means according to claim 23, characterised in that the moving arm (170) is pivotally mounted about an axis (112) which is substantially perpendicular to the plane of the inner face (106) of the window.

25. Pen means according to claim 24, characterised in that the axis of the moving arm (170) is the fired axis (112) about which the pen support (111) pivots.

26. Pen means according to either of claims 24 or 25, characterised in that the moving arm (170) is substantially U-shaped, wherein one arm (171) is traversed by the pivot axis (112) of the said arm and wherein the other arm (172) slides beneath the fired table (105) when the said arm is moved so as to aid the guidance thereof.

27. Pen means according to one of claims 23 to 26, characterised in that elastic means (173) are provided to return the moving arm (170) towards its engaged position at all times.

28. Pen means according to one of claims 23 to 27, characterised in that the moving arm (170) has at least one protected tab (140, 141) below which the front portion (146) of the pen member (110) is housed when the moving table (107) is lifted, and an additional tab (178) below which the outer edge of the rear portion (145) of the said pen member passes at all times, providing supplementary guidance for the pen member for all angular positions of the pen support (111).

29. Pen means according to one of claims 23 to 28, characterised in that the drive means associated with the moving arm (170) is the pen member (110) itself, which directly moves the said moving arm when the moving table (107) is lifted.

30. Pen means according to one of claims 23 to 29, characterised in that it also comprises a locking member (176) whereby the moving table (107) can be held open when the moving arm (170) is in the withdrawn position and the pen member (110) has reached a disengaged position in which it is located beyond the intended perimeter of the chart-bearing disc.

31. Pen means according to claim 30, characterised in that the locking member (176) is located between the fired table (105) and the inside face (106) of the window.

32. Pen means according to either of claims 30 and 31, in which the drive means whereby the pen member is disengaged comprise a pinion (116) coaxial with the axis of the moving table and an elongated slide (117) which acts together with the said pinion and with the pen support (111), characterised in that the locking member (176) acts together with the elongated slide (117) in such a way that locking automatically takes place when the said slide reaches a position corresponding to a predetermined degree of opening of the movable table (107).

33. Pen means according to claim 32, characterised in that the locking member (176) is mounted so as to turn about an axis substantially parallel to the inside face (106) of the window and has a rear portion (180) which acts together with a later extension (183) of the elongated slide (117) and a forward portion (178) whose end lies opposite an associated recess (179) provided in the fired table (105).

34. Pen means according to claim 33, characterised in that elastic means (182) are provided to return the locking member (176) towards the position in which it engages the lateral extension (183) of the slide (117) at all times.

35. Pen means according to any one of claims 32 to 34, characterised in that additional elastic means are provided to tend to return the moving table (107) towards a lower position, such as a torsion spring (187) acting on the hinge of the moving table (107), in particular in cooperation with the pinion (116) coaxial with the axis of the said moving table.

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