FR3080118A1 - ROTARY RATIERE AND WEAVING - Google Patents

Abstract

Rotary dobby (1) comprising a frame (3); a lubrication system (110, 112, 114, 147); a common shaft (12); output levers (14) mounted around the common shaft (12); a drive shaft of the output levers; mechanical driving devices (19) mounted around the drive shaft, each device swinging between coupled and uncoupled configurations for securing or releasing the output levers; a reading system (30) for selectively switching the driving devices (19) between the coupled and uncoupled configurations, the drive shaft, the common shaft (12), the driving devices (19) and the reading system (30) being offset in a direction of height (Z) relative to the bottom (5) of the frame. To improve lubrication, the lubrication system includes a lubricant dispenser (120), which includes a plurality of lubricant-emitting outlets that are offset in the height direction (Z) relative to the reading system (30).

Description

Rotary dobby and loom

The present invention relates to a rotary dobby for a loom, as well as a weaving loom comprising such a dobby.

The invention relates to the field of weaving looms and their crowd-forming machines, in particular to the field of rotary dobbies for controlling heald frames.

The frame and hood of the crowd forming machines contain mechanical systems which are subjected to high speeds and heavy loads due to the need to operate large frames of the loom. The transmission of the engine torque to the shafts of the machine, in particular by means of rollers, latches or hooks, the reduction of the torque, the actuation of the oscillating levers and all other mechanical transmissions, stress the metallic parts in friction and cause losses high calorific values of the machine.

In order to obtain a sequence of individual oscillations for each output lever and thus form the crowd determining the weave desired for the fabric, certain crowd forming machines, namely the rotary dobbies, are equipped with a mechanical reading-. The reading mechanics selectively couple or decouple the output levers of the dobby drive shaft, to link or free the position of each lever to the rotation of the drive shaft. The reading system therefore constitutes a mechanical selector. Each lever can thus be individually moved or held in place, according to the desired scheme.

EP 1 845 181 A1 describes an example of a rotary dobby for a weaving loom comprising, for each of its blades, that is to say for each of its oscillating levers: an oscillating part, sometimes called a connecting rod, coupled to a frame smooth via this blade and associated with an actuating element, sometimes called a cam, mounted idly on a main shaft of the dobby, that is to say a drive shaft; a drive element, in particular a drive disc, integral in rotation with the main shaft; two latches for the rotational coupling of the driving element and the actuating element and control means provided for moving the latches and thus coupling or decoupling the driving element with the element actuation.

EP 1 845 181 A1 provides for each blade, as a control means, a pusher displacing the locks, and, to control this pusher, an oscillating lever, itself controlled by a read actuator represented by an arrow.

EP 0 851 045 A1 and EP 1 382 725 A1 describe other examples of dobbies, in which the reading actuators are shown in more detail.

In the long term, the wear of the reading mechanics can in particular lead to the improper actuation of one or more output levers due to lack of reading. Then, an armor error is produced, which leads to a visible defect on the textile article produced by the loom. Therefore, the active lubrication of the parts and their cooling play a decisive role in maintaining the good functioning of the machine over time. The advantages of lubrication are to reduce the resistance to friction of moving mechanical parts, to evacuate the heat created by friction, to evacuate metallic particles or some debris from contact areas, to reduce operating noise and protect the parts against oxidation and corrosion.

The solutions of the prior art generally rely on oil splashes emitted by the outlet levers from an oil stirring bath, to partially lubricate the upper part of the machine. However, some particularly stressed parts of the reading system require a permanent supply of oil, which may not be obtained by simple stirring. In particular, the most vulnerable parts of the reading system are generally located on the upper part of the machine where the brewing brings little oil.

When an oil pump is provided, the speed of the oil pump is generally subject to the rotation of the drive shaft. At low speed of the drive shaft, the pump then struggles to supply oil to the upper part of the dobby and therefore to the reading system. However, care should be taken to avoid excessive dispersion of oil in the dobby by the high-speed pump, in order to reduce the risk of oil leaking through the sealing zones of the outlet levers, also located in the upper part, at the level of the hood.

EP 3 162 935 A1 describes a shedding machine comprising a lubrication circuit, a pump and a distribution member formed by a common lever support shaft. This common shaft is tubular and has radial holes to lubricate the bearings of the common shaft and the bearings of the output levers. However, this lubrication by the common shaft is insufficient to adequately lubricate a reading system, which is located at a distance from the common shaft.

In addition, there are certain additional technical constraints specific to rotary dobbies including a reading system. In particular, the dobby can be tilted due to the type of loom, or in the presence of a superstructure above the loom, which can disadvantage some of the mechanics to be lubricated. Also, the dobby can be produced with several configurations depending on its integration into the loom. In particular, the dobbies are generally produced industrially with two symmetrical configurations, adapted to the type of control of the trade. These different dobby models therefore pose problems of configuration and standardization of the lubrication means.

The invention therefore aims to remedy the aforementioned drawbacks of the prior art, by providing a new rotary dobby for which the lubrication of the mechanical reading system is improved, to deliver sufficient oil through the circuit, and to emit it. quantity adapted to mechanics, whatever the speed of the drive shaft, and despite any additional constraint applying to the dobby, such as an inclination of the dobby.

The subject of the invention is a rotary dobby for a loom, the rotary dobby comprising:

- a frame comprising a bottom, as well as a first and a second plates defining respectively a first support plane and a second support plane passing through the bottom, being parallel and distant from each other;

- a lubrication system comprising a lubrication circuit and a pump for circulating the lubricant in the lubrication circuit;

- a common shaft, supported by the frame and extending between the first support plane and the second support plane;

- output levers, mounted mobile in rotation around the common shaft between the first and second support planes, and driven by alternative oscillation movements during weaving;

- an output lever drive shaft, supported by the frame and extending between the first support plane and the second support plane;

- mechanical drive devices mounted around the drive shaft, each drive device being configured to switch between:

o a coupled configuration, in which the drive device subjects the rotational mobility of one of the output levers to the rotation of the drive shaft, and o a decoupled configuration, in which the drive device ( 19) frees the rotational mobility of said lever for outputting the rotation of the drive shaft;

- a reading system, configured to selectively switch the drive devices between the coupled configuration and the decoupled configuration, the drive shaft, the common shaft, the drive devices and the reading system being offset according to a direction of height from the bottom;

According to the invention, the lubrication system comprises a lubricant distributor, which is distinct from the common shaft, and which comprises several lubricant emission mouths, which are supplied with lubricant by the lubrication circuit and which are offset according to the height direction relative to the reading system.

The lubricant dispenser of the invention uses gravity to ensure the lubrication of the mechanical reading system, since the mouths of the dispenser are offset in the direction of height relative to the parts to be lubricated of the mechanical reading system, this is that is, are located above these parts to be lubricated. In use, the dobby will in fact be arranged so that the height direction is oriented vertically upwards, or with a certain angular inclination relative to this orientation. Each lubricant outlet mouth is thus arranged so as to pour lubricant or to sprinkle lubricant on one or more parts to be lubricated of the mechanical reading system. Even if the dobby is tilted, the arrangement of the dispenser mouths relative to the parts to be lubricated ensures that the parts to be lubricated, whether lateral or central, for example, will still be better lubricated, compared to mixing in the prior art . Thanks to the invention, it can advantageously be provided that the mouthpieces are oriented in the direction of the parts to be lubricated and / or that they are arranged near the parts to be lubricated. The presence of several emission mouthpieces ensures that the lubricant is distributed over all the parts to be lubricated, as desired by the designer of the dobby, in particular regardless of the inclination of the dobby. The arrangement of the mouthpieces ensures that, even if the flow of lubricant supplied to the distributor is relatively low, lubrication is still ensured for certain parts to be lubricated most essential, or at least more effectively than in the case of stirring carried out with a low pumping speed, in particular by gravity or by migration of a thread of emitted lubricant.

Preferably, the invention also makes it possible to guarantee a distribution of the lubrication over all of the central parts to be lubricated, for each blade, which reduces premature wear and the faults in reading and driving frames during weaving.

Preferably, the mouths are oriented opposite the areas of sealing of the dobby, or any other area that should not be exposed to the lubricant too much. Thus, if the flow of lubricant supplied to the dispenser is high, the risk of accidental projection of lubricant in the direction of these sealing zones is reduced compared to stirring, especially in the central part of the machine. This reduces, for example, the risk of leakage at the opening of the hood for the passage of the levers. The invention is therefore particularly advantageous for embodiments in which the lubrication system comprises a lubricant pump supplying the distributor with lubricant, and where the flow rate of this pump is subject to the speed of rotation of the shaft. training. Other advantageous characteristics of the invention are defined in the following:

- The reading system comprises central parts located between the first support plane and the second support plane.

- the emitting mouths of the lubricant distributor comprise central mouths, which are distributed along at least one section of the distributor, parallel to the drive shaft, the central mouths being offset in the direction of height relative to to the central parts of the reading system.

the dispenser comprises a central section carrying the central mouths, which are distributed between the first support plane and the second support plane, the central section supplying the central mouths in series with lubricant, from the first support plane to the second plane of support.

- the dispenser comprises: a lubricant distribution node; a first derived section carrying a first part of the central mouths, the first derived section extending from the distribution node to the first support plane; and a second derived section carrying a second part of the central mouths, the second derived section extending from the distribution node to the second support plane.

the reading system comprises: a leveler, which is movable between two distinct positions relative to the frame, the leveler being driven in an oscillation between the two positions by rotation of the drive shaft, for each drive device, at least one respective tonearm which is movable in rotation relative to the frame, this rotation being limited by an abutment of an abutment leg of the tonearm against the leveler, for each tonearm, a return member elastic arm, exerting an elastic restoring force against said tonearm, tending to hold the tonearm in abutment against the leveler by means of the abutment tab.

- The central parts include the stop tabs and / or the elastic arm return members.

- The reading system comprises lateral parts located around the first support plane and / or the second support plane.

- the emission mouths comprise at least one lateral mouth, arranged in one of the support planes and offset in the direction of height relative to one of the lateral parts.

- the reading system comprises: a leveling shaft, which extends between the first support plane and the second support plane, being orthogonal to the first support plane; at least one leveling arm extending in one of the support planes and comprising a pivot connection via which said at least one leveling arm is supported by the leveling shaft while being movable in rotation between a two positions around the leveling shaft relative to the frame; and at least one elastic leveling return member, exerting an elastic return force tending to maintain said at least one leveling arm in one of the two positions, the elastic leveling return member being arranged in the same plane of support that said at least one leveling arm.

the lateral parts comprise: the pivot connection between said at least one leveling arm and the leveling shaft, the lateral mouths comprising a first lateral mouth offset in the direction of height relative to the pivot connection in order to lubricate it with lubricant, and / or the elastic leveling return member, the lateral mouths comprising a second lateral mouth offset in the direction of height relative to the elastic return member in order to lubricate it with lubricant.

- The reading system comprises a reading tree, which is orthogonal to the first support plane and which comprises a first end traversed by the first support plane and a second end traversed by the second support plane.

- The lateral parts include the first end and the second end of the reading shaft, the lateral mouths comprising: a third lateral mouth offset in the direction of height relative to the first end; and a fourth lateral mouth offset in the direction of height relative to the second end.

- the distributor forms a rigid integral assembly.

- the distributor comprises two connection mouths respectively located in the first support plane and in the second support plane and being configured to be selectively connected to a supply line for the distributor in lubricant.

the lubricant distributor comprises a lateral section extending in one of the two support planes, being offset in the direction of height relative to the plate which defines this support plane and being able to be connected fluidly to the circuit of lubrication in this support plane.

- the distributor defines a plane of symmetry parallel to the first support plane and the mouths are distributed symmetrically on either side of the plane of symmetry.

- The distributor comprises at least two tubular sections each carrying at least one of the emission mouths, the two tubular sections being fluidly connected to each other at a passage section, the passage of lubricant from one section to the other being limited by a partial obstructor of the passage section, for example a partial partition.

- the dispenser includes latching tabs for its attachment to the frame.

- The dispenser comprises: a base, forming the emission mouths, and a cover, joined with the base, preferably by snap-fastening, at the level of a joining plane of the distributor, to form, with the base thus joined, lubricant circulation conduits within the distributor, the conduits extending parallel to the joint plane and all being crossed by the joint plane, the cover being offset in the height direction relative to the base.

The invention also relates to a weaving loom comprising a rotary dobby as defined above.

Other characteristics of the invention emerge in more detail from the description which follows, given by way of preferred examples of embodiment of the invention without limiting purpose, this description making reference to the appended drawings listed below:

- Figure 1 is a perspective view of a rotary dobby according to a first embodiment according to the invention;

- Figures 2, 3 and 4 are partial sections along three respective parallel planes P9, P10 and P14 of Figure 1;

- Figure 5 illustrates a detail of Figure 4;

- Figure 6 is an exploded perspective view of a lubricant dispenser belonging to the rotary dobby of the previous figures, a dispenser cover being omitted;

- Figure 7 is a front view of the dispenser of Figure 6, with the cover;

- Figure 8 is a perspective view from below of the dispenser of the previous figures;

- Figure 9 is a cross section of part of the dispenser of the previous figures;

- Figure 10 is a perspective view of a rotary dobby according to a second embodiment according to the invention;

- Figures 11 and 12 are partial sections along respective planes P9 and P14 of Figure 10;

- Figure 13 is an exploded perspective view of a lubricant dispenser belonging to the rotary dobby of Figures 10 to 12, a dispenser cover being omitted; and

- Figure 14 is a cross section of part of the dispenser of Figures 10 to 13.

Figure 1 shows a rotary dobby 1 according to the first embodiment of the invention, for a loom, itself not shown.

Like all looms in the loom, the dobby 1 is a loom crowd training machine, which operates the heald frames to determine the weave of the fabric produced by the loom.

The dobby 1 comprises a frame 3, which constitutes a fixed part of the dobby 1.

We define an orthogonal coordinate system XYZ, including a longitudinal direction X, a transverse direction Y and a height direction Z, attached to the frame 3 and directed in the three directions of space, in order to better locate the different elements of the dobby 1 in the following.

The frame 3 is a rigid protective part of the dobby 1. The frame 3 is advantageously a foundry part, or possibly a set of mechanically welded parts. A cover, not shown, is advantageously fixed to the frame 3. The frame 3 and the cover form an interior volume contain different internal parts of the dobby 1 defined below, in a manner substantially impermeable to liquids such as lubricant. The frame notably comprises a bottom 5 and a peripheral wall 7.

Preferably, the bottom 5 extends in a plane parallel to the directions X and Y. The dobby 1 is intended to be fixed and coupled to the structure of the loom for its use for weaving purposes of different textile articles. The bottom 5 is advantageously provided to be oriented in a horizontal plane, or with a slight angular inclination relative to such a horizontal plane, when using the dobby 1. At the very least, the bottom 5 is positioned towards the bottom of the dobby 1 during its use, even if it is not horizontal. One could nevertheless foresee that the bottom is inclined with respect to the directions X and Y: however, in this case, it is nevertheless provided that the bottom is located downwards when using the dobby 1.

The peripheral wall 7 extends over the entire contour of the bottom 5 and rises from the bottom 5 in the direction of the direction Z. The cover, not shown, is attached over the wall 7 in order to close the frame 3.

The frame 3 also includes two support plates 9 and 10, located in the interior volume formed by the bottom 5, the wall 7 and the cover. In the present case, the plates 9 and 10 project from the bottom 5 while being fixed relative to the latter. The plates 9 and 10 extend respectively in a plane P9 and in a plane P10 parallel and distant from each other, called "support planes". The planes P9 and P10 are parallel to the directions X and Z. The plates 9 and 10 extend in the direction Z relative to the bottom 5, and in a direction opposite to the direction Z relative to the cover. Preferably, the planes P9 and P10 are defined by the frame as vertical planes, or close to the vertical, and parallel to each other, which can in particular be the case if the dobby 1 is not inclined relative to the horizontal . At the very least, the planes P9 and P10 cross the bottom 5, for example by being perpendicular to the bottom or slightly inclined with respect to the bottom 5.

The dobby 1 comprises a common shaft 12, sometimes called a “lever shaft”, supported by the frame 3, inside this frame 3. More specifically, the shaft 12 is offset in the direction Z relative to the bottom 5 and in a direction opposite to the direction Z relative to the cover, being surrounded by the wall 7, in the directions X and Y. In this case, the shaft 12 is supported at its ends by the plates 9 and 10, so that it extends between planes P9 and P10. Preferably, the shaft 12 is perpendicular to the planes P9 and P10, that is to say parallel to the direction Y. The shaft 12 is preferably fixed in rotation about its axis relative to the frame 3.

For example, the plane P9 is located at the level of the bearing surface of the shaft 12 on the plate 9, in the direction Y. For example, the plane P10 is located at the level of the bearing surface of the shaft 12 on the plate 10 in direction Y.

The dobby 1 comprises outlet levers 14, sometimes called "blades". Each lever 14 is preferably of planar and fine shape, for example like a plate. Each lever 14 extends in a respective lever plane P14, parallel to the directions X and Z, or at least perpendicular to the shaft 12, each lever plane being positioned between the planes P9 and P10. Each lever plane extends according to the planar shape of the lever 14 concerned. The levers are arranged side by side along the shaft 12, in the Y direction, being adjacent. Two levers 14, called "extreme levers", located at the ends of all of the dobby outlet levers, are adjacent to the plates 9 and 10. In other words, the plates 9 and 10, that is to say -to say their respective plan P9 and P10, borders the series of levers 14. In FIG. 1, only two levers 14, namely the two extremal levers, are represented. In practice we can provide for example between 6 and 16 levers.

Each lever 14 is supported by the shaft 12 by means of a pivot link 13 such as a bearing or a bearing, so as to be individually movable in rotation relative to the frame 3 around the shaft 12. In in other words, each lever 14 can be rotated independently of the other levers 14 around the shaft 12. The levers 14 are away from the bottom 5 in the direction Z.

Each lever 14 is partially contained in the frame 3, for a first part carried by the shaft 12, and also comprises a second part 15 in the form of an arm which extends out of the dobby 1 by passing through the cover. For this, the cover comprises openings advantageously provided with sealing means. By means of the part 15, each lever 14 can be coupled to a heald frame of the loom, in order to actuate it and form the crowd, by means of a transmission mechanism not illustrated, determining thus the weave of the fabric made by the trade.

The dobby 1 includes a drive shaft 17, sometimes called a "main shaft". The tree 17 is omitted from FIG. 1, only its center line Y17 being represented, for reasons of clarity of the drawing. The shaft 17 is visible in itself in FIGS. 2 to 4. Preferably, the shaft 17, that is to say its axis Y17, is perpendicular to the planes P9 and P10, that is to say say parallel to the direction Y and to the shaft 12. The shaft 17 is supported by the frame 3, inside this frame 3. More specifically, the shaft 17 is offset in the direction Z relative to the bottom 5 and in a direction opposite to the direction Z relative to the cover, being surrounded by the wall 7, in the directions X and Y. In this case, the shaft 17 is supported at one end in the direction Y, by the plate 10, via a pivot link of the plate 10, and to an intermediate part of the shaft 17 by the plate 9, via a pivot link of the plate 9.

Consequently, the tree 17 extends between the planes P9 and P10. The shaft 17 extends beyond the plane P10 in a direction opposite to the direction Y, so as to be mechanically at means, not illustrated, for driving the shaft 17 in rotation relative to the frame 3.

The shaft 17, whose rotation depends for example on the rotation of a modulator, and of a perpendicular control shaft not shown, has a driving function for driving the levers 14 in rotation around the shaft 12 by relative to the frame 3. For this, the dobby 1 comprises, for each lever 14, a mechanical drive device 19, one of which is visible in FIG. 4. Each mechanical drive device 19 is a mechanical transmission and is designed to subject, that is to say, bind, the rotation of the shaft 17 relative to the frame 3 to an oscillating movement of each lever 14 rotating around the shaft 12. This oscillation is performed while the loom performs weaving. Each dobby drive device can selectively drive a lever 14 in motion, while this lever 14 is coupled by a mechanical transmission device not illustrated to a frame of the trade, as explained above. By “oscillation” is meant an alternating return movement in rotation around the shaft 12. Thus, each drive device 19 connects the shaft 17 to one of the levers 14. Geometrically, each device drive 19 preferably extends entirely, or at least essentially, in the same plane P14 as its associated lever 14, so that the size of the lever 14 and its associated drive device along the direction Y is minimal to allow the stacking of ten to twenty levers 14 between the planes P9 and P10.

Each drive device 19 is contained in the frame 3, that is to say is offset in the direction Z relative to the bottom 5 and in a direction opposite to the direction Z relative to the cover, being surrounded by the wall 7, in directions X and Y.

More specifically, each drive device 19 is configured to operate in two distinct modes, between which each drive device 19 can be individually toggled between:

- A coupled configuration, that is to say engaged, in which the drive device 19 subjects the rotational mobility of the lever 14 concerned to the rotation of the shaft 17;

- a decoupled configuration, that is to say disengaged, in which the drive device 19 frees the rotational mobility of the lever 14 concerned from the rotation of the shaft 17.

In other words, when the drive device 19 is in the coupled configuration, the rotation of the shaft 17 sets in motion the lever 14. In the decoupled configuration of the drive device 19, the lever 14 is not put in motion by the shaft 17, whether the shaft 17 is rotating or stopped. Preferably, in the decoupled configuration, the lever 14 is held in a fixed position relative to the frame 3, in which the lever 14 was left at the time of the tilting in the decoupled configuration.

For example, this position corresponds to an upper or lower position of the associated frame making it possible to form the crowd.

In order to achieve such an operation, in the preferred example illustrated in the figures, each drive device 19 comprises:

- A drive disc 21, which is centered on the axis Y17, which is integral in rotation with the shaft 17 relative to the frame 3 and which is planar, positioned and oriented along the plane P14 of the lever 14 concerned;

- an eccentric plate 23, which is of planar shape, positioned and oriented along the same plane P14, the plate 23 extending around the disc 21, having a circular shape centered on an eccentric axis Y23, eccentric and parallel with respect to the Y17 axis;

- A connecting rod 25, which is of planar shape, positioned and oriented along the same plane P14, the connecting rod 25 extending around the plate 23 while being mounted movable in rotation around the axis Y23 of the plate 23, the connecting rod 25 being also coupled to the lever 14, around a pivot link of axis Y25 parallel to the axis Y23.

In the coupled configuration, the plate 23 is integral in rotation, that is to say fixed in rotation, relative to the disc 21, so as to be driven by the shaft 17. In this coupled configuration, the plate 23 constitutes a crank drive rod 25, which in turn drives the lever 14 in oscillating motion, due to the eccentricity of the axis Y23 relative to the axis Y17.

In the decoupled configuration, the plate 23 is free to rotate relative to the disc 21, so that any rotation of the shaft 17 does not cause any movement of the plate 23. Consequently, no movement of the connecting rod 25 and of the lever 14 n 'is produced by rotation of the shaft 17 in this configuration.

To couple or decouple the rotation of the plate 23 and the disc 21, it is possible to use a coupling / decoupling system of the drive device 19, comprising for example a pusher and a pair of latches actuated by the pusher to secure and dissociate the plate 23 and the disc 21 in rotation. An example of a coupling / decoupling system with locks and pusher, not shown here, is detailed for example in EP 1 845 181 A1. Any other mechanically equivalent system for securing and detaching in rotation the plate 23 and the disc 21, such as a system of hooks, can be implemented.

Similarly, it is possible to implement drive devices 19 operating differently from that described in the present example, without going beyond the ambit of the invention, provided that these drive devices 19 have the coupled configurations. and decoupled above.

The dobby 1 further comprises a mechanical reading system 30, which has the function of a mechanical selector. The reading system 30 is contained in the frame 3. More specifically, the reading system 30 is offset in the direction Z relative to the bottom 5 and in a direction opposite to the direction Z relative to the cover, being surrounded by the wall 7, in the directions X and Y. As visible in FIG. 4, this reading system 30 extends mainly in the direction Z relative to the drive devices 19 and to the shaft 17, partially surrounding the shaft 17. Preferably, part of the reading system 30 also extends in the direction X relative to the shaft 17. In the direction Y, the reading system extending from the plane P9 to the plane P10, that is to say along the shaft 17, from the plate 9 to the plate 10 included. The spatial positioning of the reading system 30 is clearly visible in FIGS. 1 to 4.

The reading system 30 is configured to selectively switch the drive devices 19 between the coupled configuration and the decoupled configuration. In other words, each drive device 19 can be individually switched from one configuration to another by the reading system 30, depending on the crowd to be formed. For this, the reading system 30 comprises mechanical members which act mechanically directly on the coupling / decoupling system of each drive device 19.

The following describes a preferred embodiment of a reading system 30, even if other types of reading system 30 can be produced.

In the illustrated embodiment, the reading system 30 comprises a tree 34, called “reading tree”, visible in FIGS. 1 to 5, which extends between the planes P9 and P10 being orthogonal to the latter. In other words, the shaft 34 is preferably parallel to the shafts 12 and 17. The shaft 34 is carried at its ends 36 and 38 by the plates 9 and 10 and is advantageously fixed relative to the frame 3. In d ' other words, the shaft 34 includes ends 36 and 38 respectively crossed by the planes P9 and P10.

The shaft 34 is located away from the bottom 5 and the shaft 17 in the direction Z. In other words, the shaft 34 is located between the cover and the shaft 17. Approximately, the shaft 34 is even preferably positioned in an aligned manner in the direction Z with respect to the shaft 17. The shaft 34 is offset both in the directions X and Z with respect to the shaft 12.

The reading system 30 comprises for each drive device 19, a respective tonearm 32, one of which is visible in FIG. 4. Each tonearm 32 extends in a plane P32 parallel to the plane P14 of the device drive 19 to be tilted, each plane P32 being located between two successive planes P14 along the direction Y, as illustrated in FIG. 1. In FIG. 4, the arm 32 is therefore partially covered by the connecting rod 25.

Preferably, each arm 32 has two parts 40 and 42 arranged in a "V" or "L" shape, extending from the shaft 34. Each arm 32 is mounted so as to be able to rotate about the shaft 34 relative to to the frame 3, being supported by the shaft 34 using a pivot connection. In a first rotational position of the arm 32, called the "engagement position", the free end of the part 40 comes into contact with the coupling / decoupling system so as to allow the drive device 19 to continue in the decoupled configuration. In a second rotational position of the arm 32, called the "release position", the free end of the part 40 releases the coupling / decoupling system so as to tilt or maintain the drive device in the coupled configuration. This operation is described in more detail in EP 1 845 181 A1, in which the arm 32 of the present invention is named “oscillating arm 14”, actuating a “pusher 13” of the coupling / decoupling system, also comprising a “first lock 10 "and a" second lock 11 ". The engagement position is reached, from the release position, by rotation of the arm 32 in a direction R32, shown in FIG. 4.

In the illustrated embodiment, the reading system 30 comprises a shaft 44, called "common leveling tree", visible in FIGS. 1 to 4, which extends between the planes P9 and P10 being orthogonal to the latter. In other words, the shaft 44 is preferably parallel to the shafts 12 and 17. The shaft 44 is carried at its ends 46 and 48 by the plates 9 and 10 and is advantageously fixed relative to the frame 3. In d ' other words, the shaft 44 comprises ends 46 and 48 respectively crossed by the planes P9 and P10.

The shaft 44 is located away from the bottom 5 in the direction Z, more particularly between the bottom 5 and the cover. The shaft 44 is offset in the direction X with respect to the shaft 17, either in alignment with the direction X, or by being slightly offset in the direction Z with respect to the shaft 17. In any case, according to the direction X, the tree 17 is located between the tree 44 and the tree 12.

Preferably, the reading system 30 comprises for each driving device 19, a respective secondary tonearm 62, one of which is visible in FIG. 4. Each arm 62 extends in the plane P32. In FIG. 4, the arm 62 is therefore partially covered by the connecting rod 25.

Preferably, each arm 62 has two parts 70 and 72 arranged in a "V" or in an "L", extending from the shaft 44. Each arm 62 is mounted so as to be able to rotate about the shaft 44 by relative to the frame 3, being supported by the shaft 44 using a pivot connection. Similarly to the arms 32, each arm 62 is movable between a "release position" and a "engagement position", in which the free end of the part 70 is released or comes into contact with a part of the drive device 19 in order to maintain the coupled or uncoupled configuration, or to switch from one configuration to another. The engagement position is reached, from the release position, by rotation of the arm 62 in a direction R62 opposite to the direction R32.

The parts 4 and 70 of the arms 32 and 62 are diametrically opposite with respect to the shaft 17, while the parts 42 and 72 are adjacent.

In the illustrated embodiment, the reading system 30 also includes a leveler 50, which can be described as a "reading stopper", visible in FIGS. 1 to 5. The leveler 50 is preferably in the form of a bar or a shaft parallel to the shaft 34 and / or parallel to the shaft 17. The leveler 50 extends between the two plates 9 and 10, that is to say between the planes P9 and P10 , so as to cross all the planes P32. The leveler 50 is positioned near the parts 42 and 72 of the arms 32 and 62, offset in the X and Z directions relative to these parts 42 and 72. Consequently, the rotation of all the arms 32 is limited, this that is to say limited, by the leveler 50, in the same direction of rotation R32. Indeed, the part 42 of each arm 32 comprises, at its free end, an abutment tab 43 which abuts against the leveler 50. Satisfying a symmetrical construction of the reading system, the rotation of the arms 62 is limited in the direction of rotation R62. In fact, the part 72 of each arm 62 comprises, at its free end, an abutment tab 73 which comes into abutment against the leveler 50.

The reading system 30 comprises, respectively for each arm 32, an elastic return member 33, one of which is visible in FIG. 4 and two of which "extremals" are shown in FIG. 1, the others being omitted from the Figure 1. Each member 33 exerts an elastic return force, provided for example by an axial compression spring, embedded in the member 33, in rotation in the direction R32 of the arm 32 concerned. Thus, the arm 32 tends to be brought back and held in abutment against the leveler 50 by the member 33.

The reading system 30 advantageously comprises a guide structure 35, which is fixed to the frame while being offset in the direction Z relative to the arms 32. The structure 35 is preferably fixed to the plates 9 and 10 at its ends in the direction Y As in the example illustrated, the structure 35 is advantageously in the form of a folded sheet, advantageously matching the L or V shape of the arms 32 so as to cover them. A part 39 of the structure 35 is preferably planar and extends in a plane parallel to the plane containing the own axes of the shafts 34 and 44.

The structure 35 preferably comprises a series of guides, formed in this case by notches 37, to guide the rotation of each arm 32 and ensure that they are maintained in their respective plane P32. To this end, three respective notches 37 are preferably provided for each arm 32. Three respective guide tabs belonging to each arm 32 flow respectively in these three notches 37 for guiding, including one tab 38 and the stop tab 43. In in addition, each arm 32 is elastically subjected to the restoring forces of its respective member 33 via the guide tab 38, passing through the part 39 of the structure 35, as visible in FIG. 4. Indeed, the part 39 of the structure 35 is preferably interposed between the members 33 and the arms 32. The members 33 are preferably fixed to the part 39 of the structure 35.

The reading system 30 comprises, respectively for each arm 62, an elastic return member 63, one of which is visible in FIG. 4 and two of which "extremals" are shown in FIG. 1, the others being omitted from the Figure 1. Each member 63 exerts an elastic return force, provided for example by an axial compression spring, embedded in the member 63, in rotation in the direction R62 of the arm 62 concerned. Thus, the arm 62 tends to be brought back and held in abutment against the leveler 50 by the member 63.

The reading system 30 advantageously comprises a guide structure 65, fixed to the frame being offset in the direction Y relative to the arms 62. The structure 65 is for example fixed to the plates 9 and 10 at its ends in the direction Y. As in the example illustrated, the structure 65 is advantageously in the form of a folded sheet, advantageously matching the L or V shape of the arms 62 so as to cover them. A part 69 of the structure 65 is preferably planar and extends in a plane parallel to the plane containing the own axes of the shafts 34 and 44.

The structure 65 preferably comprises a series of guides, formed in this case by notches 67, to guide the rotation of each arm 62 and ensure that they are maintained in their respective plane P32. To this end, three respective notches 67 are preferably provided for each arm 62. Three respective guide tabs of each arm 62 flow respectively in these three notches 67 for guiding, including one tab 68 and the stop tab 63. In addition , each arm 62 is resiliently subjected to the biasing forces of its respective member 63 via the guide tab 68, passing through the part 69 of the structure 65, as visible in FIG. 4. Indeed, the part 69 of the structure 65 is preferably interposed between the members 63 and the arms 62. The members 63 are preferably fixed to the part 69 of the structure 65.

The respective parts 39 and 69 of the structures 35 and 65 are advantageously coplanar. The leveler 50 is positioned between the two structures 35 and 65, almost in a plane formed by the shafts 34 and 44.

In the example illustrated, the reading system 30 comprises a leveling arm 80 and a leveling arm 90, visible in FIGS. 1, 2 and 3. As a variant, at least one of the two arms 80 and 90 is provided. Each arm 80 and 90 is carried by a respective end 46 and 48 of the shaft 44, while being mobile in rotation around the shaft 44 relative to the frame 3. Each arm 80 and 90 preferably extends respectively in the one of the planes of P9 and P10, that is to say at the height of the plates 9 and 10 along the direction Y. Each arm 80 and 90 extends along the edge, that is to say say of the perimeter or of the outline, of one of the plates 9 and 10 in their respective plane P9 and P10, while being offset in the direction X relative to the plates 9 and 10. All the arms 62 are arranged between the two arms 80 and 90, in the direction Y. The two arms of 80 and 90 have a shape similar to the arms 62, that is to say an L or V shape surrounding the shaft 17. In particular, the arms 80 and 90 include a respective part 81 and 91, as well as a respective part 82 and 92, which extend from the shaft 44 and are arranged in a V in their pl year P9 and P10 respectively.

The parts 81 and 91 support the leveler 50 by its two respective ends, the leveler 50 being thus fixed to each of the arms 80 and 90 so as to constitute with these arms 80 and 90 an assembly integrally movable in rotation around the shaft 44 compared to the frame. Preferably, the leveler 50 is fixed to the arms 80 and 90 using two screws 84 and 94 respectively. Each screw 84 and 94 is respectively mounted in a radial thread passing through the leveler 50 and screwed respectively into one of the arms 80 or 90.

The reading system 30 also comprises two cams 83 and 93, supported by the shaft 17, in rotation with this shaft 17. The cams 83 and 93 are omitted from FIG. 1, but are respectively visible in FIGS. 2 and 3. The cams 83 and 93 are arranged at the ends of the shaft 17, that is to say in the planes P9 and P10, respectively at the height of the arms 80 and 90, in the direction Y. The part 81 and 91 arms 80 and 90 respectively carry a roller in rolling contact with the respective raceway of the cams 83 and 93. The shaft 17 therefore actuates the assembly formed by the arms 80 and 90 and by the leveler 50, rotating around the shaft 44, via the cams 83 and 93. In the present case, the respective tread of the cams 83 and 93 are essentially circular, except at the level of two diametrically opposite depressions. When the respective roller of the arms 80 and 90 rolls on the circular part of the respective tread of the cams 83 and 93, the leveler 50 is in a first position. When the respective roller of the arms 80 and 90 rolls on one of the two depressions in the respective tread of the cams 83 and 93, the leveler 50 passes into a second position, offset in a direction F50 relative to the first position. The direction F50 is oriented in the directions X and Z, more precisely in an almost orthogonal manner, to the plane comprising the own axes of the shafts 34 and 44, opposite the bottom 5. This displacement is obtained by a rotation of the arms 80 and 90 in a direction R50 illustrated in FIG. 2, opposite with respect to the direction R32. By rotation of the shaft 17, the assembly formed by the arms 80 and 90 and by the leveler 50 is driven in oscillation between the two distinct positions twice per shaft revolution 17, since two depressions are formed on the cams 83 and 93.

The reading system 30 preferably comprises two elastic return members 85 and 95, called "elastic leveling return members", respectively supported by the plates 9 and 10 in the planes P9 and P10. Each member 85 and 95 exerts an elastic return force against the leveler 50, at the ends of this leveler 50 in contact with the fixing screws of the leveling shaft 44 and the leveling arms 80 and 90. These forces are directed according to the direction F50. Thus, the members 85 and 95 tend to maintain the leveler in its second position, shown in FIGS. 2 to 4, which makes it possible to maintain the respective contact between the cams 83 and 93 and the rollers of the arms 80 and 90, in particular during the passage of depressions to raise the shaft 50 in its second position.

When the leveler 50 is in its first position, that is to say in a direction opposite to the direction F50, it keeps the arms 32 and 62 in the release position where the parts 40 and 70 are away from the coupling / decoupling system of their respective drive device 19, that is to say radially away from the shaft 17.

When the leveler 50 is in its second position illustrated in FIGS. 2 to 4, that is to say radially farthest from the shaft 17, the leveler 50 authorizes, for each lever 14, one of the arms 32 and 62 to adopt the engagement position, by respective rotation in the direction R32 and R62. In this engagement position, the parts 40 and 70 come into contact with the coupling / decoupling system of the respective drive device 19 of the arms 32 and 62, in order to initiate the uncoupling of the shaft 17 and the eccentric plate 23 This second position of the leveler 50 is reached twice per shaft revolution 17, due to the two depressions carried by each cam 83 and 93. The arms and 62 are brought into this position of engagement respectively by the members and 63.

The reading system 30 also includes a selection actuator 100, sometimes called a “selector”, fixed to the frame 3. This actuator 100 is disposed astride the leveler 50, being offset relative to the leveler 50 in the direction Z, preferably in direction F50. The actuator 100 is positioned between the two guide structures 35 and 65. The actuator 100 is supported by the plates 9 and 10 at its ends. The actuator 100 is controlled electronically, according to the desired crowd, by an electronic controller of the dobby 1 not shown or any similar device. The actuator 100 comprises a plurality of stops 102, respectively for each arm 32 and 62, visible in FIGS. 4 and 5. Each stop 102 can be moved by the actuator 100, under the control of the electronics, between:

a holding position of the arm 32 or 62 concerned in its release position, whatever the position of the leveler 50, as is the case of the arm 32 in FIG. 4, the tab 43 or 73 of the arm 32 or 62 concerned then coming into abutment against the stop 102;

a release position of the arm 32 or 62 concerned, in which the stop 102 is retracted, the arm 32 or 62 then being:

o brought into the engagement position if the leveler 50 authorizes it, as is the case of the arm 62 of FIG. 4, or o maintained in the release position under stress of the leveler 50.

Thus, the reading system 30 selects which lever 14 set in motion under the action of the shaft 17, by electronic control of the actuator 100 and mechanical movement of the arms 32, 62, 80 and 90, as well as leveler 50 thanks to the shaft 17 itself. Of course, certain elements of embodiment of the reading system 30 and of the drive devices 19 can be modified compared to the example illustrated here, depending on the application.

The dobby 1 also includes a system for lubricating the moving parts in the frame 3 and their mutual contacts. The lubrication system includes a lubrication circuit 111 which advantageously circulates a liquid lubricant in the frame 3, such as a lubricating oil.

This lubrication system comprises a pump 110 for setting in motion the lubricant through the lubrication circuit 111. The pump 110 is advantageously driven at the same time as the shaft 17, for example by the control shaft of the machine, or by an actuator external to the dobby 1, driving the shaft 17. The flow of lubricant supplied by the pump 110 therefore essentially depends on the speed of rotation of the shaft and, by incidence, on the loom. In other words, the speed of the shaft 17 and of the pump are preferentially related. The higher the speed of the pump 110, the higher the flow rate in the circuit 111. The invention therefore provides for making the best use of the low flow rate available to supply the parts to be lubricated of the machine, sensitive to the lack of lubricant.

As illustrated in FIG. 1, the pump 110 is advantageously disposed in the frame 3, by being for example fixed to the bottom 5. The pump 110 is preferably positioned along the axis Y17, next to the plate 9, being offset in a direction opposite to the direction Y relative to the plate 9. The plane P10 of the plate 10 of the dobby 1 is therefore opposite the pump 110 and the control shaft relative to the plane P10 of the plate 10 .

The lubrication system also advantageously comprises a filter 112 and a strainer 114 connected in series to the pump 110 via conduits of the lubrication circuit 111. The filter 112 and the strainer 114 are supported by the frame 3. The strainer 114 is connected to the pump 110 upstream, in consideration of the direction of circulation of the lubricant in the lubrication circuit 111, while the filter 112 is connected downstream.

Lubricant is contained within the frame 3, resting or trickling on the bottom 5, which forms a reserve of lubricant from the lubricant system. Under the action of the pump 110 driven by the shaft 17, this lubricant is sucked via the strainer 114 to the pump 110, in order to then be sent to the filter 112 then to one or more distributor (s) lubricant of the lubrication system, via the lubrication circuit 111.

Optionally, the shaft 12 forms one of these distributors. In this case, the shaft 12 is hollow and diffuses lubricant for the bearings 13 via orifices distributed along the shaft 12. More details are given on such an operation in EP 3 162 935 A1.

The lubrication system comprises a lubricant distributor 120, which is separate from the shaft 12, for lubricating the reading system 30, as well as optionally, optionally as a corollary, the drive devices 19. The distributor 120 is advantageously a member separate from the control shaft, the main shaft 17, the reading shaft 34, the common leveling shaft 44 and the leveler 50.

The connections of the lubrication system to ensure the transport and circulation of the lubricant between the various components, namely in particular the strainer 114, the filter 112, the pump 110, the distributor 120 and the shaft 12, is ensured by several conduits of lubricant belonging to the lubrication circuit 111. These lubricant conduits internal to the frame 3. Once the lubricant has been distributed by the distributor or distributors, in particular by the distributor 120, it settles or trickles onto the bottom 5 by gravity, it being understood that the bottom 5 is oriented downwards for the use of dobby 1.

The dispenser 120 preferably forms a rigid integral assembly, which can thus be installed in one piece in the dobby 1. Preferably, the dispenser 120 is made of synthetic plastic.

As explained in more detail below, the dispenser 120 comprises several lubricant emission mouths for lubricating central parts of the reading system 30, located between the support planes P9 and P10 of the frame, and lateral parts of the reading system, located in the support planes P9 and / or P10 of the reading system 30. These parts include in particular the parts to be lubricated by gravity.

The distributor 120 is fixed to the frame 3. In particular, the distributor 120 is fixed to the part 39 of the guide structure 35. Thus, the distributor 120 is offset in the direction Z relative to this structure 35. The outer casing distributor 120 is generally offset in the direction Z, and therefore above, the outer casing of the reading system 30. In this offset configuration, the lubricant emission mouths are perpendicular to the parts to be lubricated . This favors the drop of lubricant in the opposite direction from the Z direction, directly and precisely on sensitive mechanical areas, unlike coarse mixing or spraying solutions of lubricant.

Preferably, it is provided that the distance between the plane defined by the shafts 34 and 44 and the mouths of the distributor 120 is between 5 mm (millimeters) and 50 mm, this distance being measured parallel to the orthogonal of the plane defined by the shafts 34 and 44. Preferably, this distance is measured from the lowest lubricant emission mouth of the dispenser 120. This distance is high enough not to hinder the circulation of lubricant and the heat exchanges of the parts, while being weak enough for the lubricant to precisely reach the parts to be lubricated.

Advantageously, the aforementioned distance ensures that the dispenser does not hinder the operation of the moving parts in the dobby, nor does it hinder access to the constituent parts of the reading system, in particular the central and lateral parts, for example for maintenance.

The dispenser 120 is advantageously secured by snap-fastening, the dispenser 120 comprising for example two snap-on tabs 126 engaging in orifices 128 of the part 39, at respective heights of the planes P9 and P10 in the direction Y. The dispenser 120 is therefore particularly easy to install on the frame 3. Preferably, this attachment is removable so that the dispenser 120 can be removed from the dobby 1, in particular to be cleaned or changed.

As a variant, the fixing can be carried out at another point of the frame 3, such as the plates 9 and 10, and / or by another method of fixing than the locking, removable or final, for example a fixing by screws.

In the preferred embodiment illustrated here, the distributor 120 comprises only two assembled parts, namely a base 122, visible in FIGS. 1 to 8 and 10 to 12, and a cover 124, omitted from FIGS. 1, 6 and 8 for better show the interior of the distributor 120, and visible in FIGS. 2 to 5, 7 and 9. The base 122 is the lower part of the distributor 120, located above the plane P120 on the side of the frame, and the cover 124 is the lower part of the distributor located below the plane P120 on the side of the cover. In other words, the cover 124 is offset in the direction Z relative to the base 122. The parts 122 and 124 are assembled, that is to say joined, at a joint plane P120, parallel to a plane comprising the proper axes of the shafts 34 and 44, or at least parallel to the direction Y, in particular to the axis Y17. The plane P120 is therefore inclined relative to the plane formed by the directions X and Y, between approximately 35 and 55 ° around the direction Y. This distributor 120 is therefore particularly easy to manufacture and to dismantle for maintenance. The joint between the parts 122 and 124 is preferably sufficiently adjusted to be impermeable to the lubricant during its high-speed circulation in the distributor 120. This snap-fastening is preferably removable to allow disassembly of the part 124.

The holding together of the parts 122 and 124 is advantageously ensured by a mutual snap-fastening of the parts 122 and 124. For this, the parts 122 and 124 have mutual snap-fitting means. In the present example, as visible in FIG. 9, these means include:

- hooks 123, extending parallel to the plane P120 while being distributed along the joint contour of the cover 124, being advantageously turned towards the outside of the cover 124; and

- respective receiving grooves 125 of the hooks 123, extending parallel to the plane P120 while being distributed in the same way along the joint contour of the base 122, the cross section of each groove 125 making it possible to accommodate one of the hooks 123.

Alternatively, the hooks 123 and grooves 125 of the present example can be reversed, or arranged differently depending on the application. As a variant, other methods of mutual fixing of the parts 122 and 124 can be provided, providing a removable or final fixing of the parts 122 and 124.

The legs 126 are advantageously provided on the base 122, as shown in FIG. 6.

In order to ensure correct and stable positioning of the dispenser 120 on the part 39, the dispenser comprises several support elements 127, such as ribs or feet, advantageously formed from the material with the base 122, being projecting in the direction of the structure 35. The ribs are preferred since they also reinforce the rigidity of the distributor 120. The elements 127 protrude from the base 122 orthogonal to the plane P120 opposite the direction Z. The distributor 120 rests on the part 39 via these elements 127.

To ensure correct positioning of the distributor 120 in the plane of the part 39, the distributor 120 advantageously comprises positioners 129, preferably two positioners 129, which are formed projecting from one of the ribs 127. These positioners 129 are respectively inserted in the orifices 128, that is to say through the structure 35, to ensure that the positioning of the distributor 120 is correct according to the plane P120.

The distributor 120 includes lubricant circulation conduits within it. The conduits are intended to distribute and conduct lubricant, supplied by the pump 110, in the distributor 120 in order to distribute this lubricant. In the first embodiment of FIGS. 1 to 9, these conduits comprise five tubular sections, namely a central section 140 and four lateral sections 141, 142, 143 and 144. The presence of the sections 142 and 144 is preferable but optional.

Preferably, each section 140, 141, 142, 143 and 144 is essentially, if not completely, straight. Each section has a cross section of tubular shape, preferably circular or ovoid, as shown for example in FIG. 9, in order to form one of the lubricant conduits of the distributor 120.

Preferably, each section 140, 141, 142, 143 and 144, that is to say each lubricant duct of the distributor 120 extends in the plane P120, that is to say that all the cross sections of the conduits are crossed by plane P120. Indeed, each section, over its entire extent, is formed by the combination of the base 122 and the cover 124, the joint is advantageously flat. In other words, the lubricant duct network of the dispenser 120 is planar.

The central section 140 extends essentially parallel to the direction Y, in particular parallel to the axis Y17. More particularly, as illustrated in the figures, more than the majority of the length of the section 140, in particular in the central part of the section 140, is rectilinear and parallel to the direction Y. The section 140, at least for its rectilinear part, is offset in the direction Z relative to the reading system 30, in particular by being aligned in the direction Z with the leveler 50, and / or with the legs 43 and / or with the movable stops 102. The section 140, at least for its rectilinear part, is aligned with an edge 41, itself parallel to the direction Y, of the structure 35. More precisely, the section 140 is positioned in alignment with an orthogonal plane with the part 39 and passing through the edge 41. In the present example, the edge 41 is a fallen edge, that is to say curved, orthogonally with the part 39 while being directed towards the bottom 5 of the frame 3. More generally, the edge 41 forms the notches 37 guiding the tab 43 of the arms 32.

As shown in FIG. 1, the section 140 connects the plane P9 to the plane P10, or at least extends between the plates 9 and 10, in the direction Y.

The sections 141, 142, 143 and 144 extend parallel to a direction S120 of the plane P120, the direction S120 being orthogonal to that of the section 140, that is to say in the direction Y. By convention, the direction S120 , is directed in the direction of the X direction, being inclined towards the bottom 5.

The section 141 is a lateral section. It extends from one of the ends of the section 140 turned towards the plane P9, while being fluidly connected to the section 140 at this location. Near this fluid connection, the section 140 advantageously has a non-rectilinear part, preferably curved, in order to optimize the fluid conduction of the lubricant from the section 141 as far as the section 140. The section 141 is preferably completely straight and extends , since its connection with the section 140, in the direction S120.

The section 142 is a lateral section. It extends from the same end of the section 140 as the section 141, while being fluidly connected to both the sections 140 and 141 at this location. The section 142 is preferably completely rectilinear and extends, from its connection with the section 140, in a direction opposite to the direction S120, while being preferably coaxial with the section 141. The section 142 preferably carries one of the legs 126 and one of the positioners 129.

The section 143 is a lateral section. It extends from another of the two ends of the section 140, turned towards the plane P10, while being fluidly connected to the section 140 at this location. Close to this fluid connection, the section 140 advantageously has another non-rectilinear part, preferably curved, in order to optimize the fluid conduction of the lubricant from the section 140 as far as the section 143. The section 143 is preferably completely straight and s' extends, since its connection with the section 140, in the direction S120.

The section 144 is a lateral section. It extends from the same end of the section 140 as the section 143, being fluidly connected to both the sections 140 and 143 at this location. The section 144 is preferably completely rectilinear and extends, from its connection with the section 140, in a direction opposite to the direction S120, while being preferably coaxial with the section 143. The section 144 preferably carries one of the legs 126 and one of the positioners 129.

The sections 140, 141, 142, 143 and 144 are preferably arranged to form an "H" shaped network in the plane P120.

The section 141 comprises a connection mouth 146, connected to an intake duct 147 belonging to the lubrication system, and fluidly connecting the distributor 120 to the pump 110, which supplies the distributor 120 with lubricant via the section 141. The mouth 146 is preferably directed in the direction S120, coaxially with the section 141. The mouth 146 is preferably positioned in the plane P9, as in the configuration illustrated. The lateral section 141 is also preferably offset vertically in the direction Z relative to the plate 9, and still preferentially relative to the guide structures 35 and 65, the shafts 34 and 44 and the arms 32 and 62, so that it does not hinder access to the reading system 30. The lateral section 141 is a lubricant supply section for the dispenser 120. Also, the lateral section 141 is aligned with the plane P9 so that its connection mouth 146 is located in the plane P9 and offers a connection to the intake duct 147 in or parallel to the plane P9, without the intake duct 147 extending and undulating neither on one side or the other of the plate 9.

Advantageously, interventions can take place on the machine at the level of the rotating parts, on the leveling arm side 32 and 62 or on the outlet lever side 14 relative to the plate 9, without the need to dismantle the distributor 120. Advantageously the intake duct 147 connected in the plane P9 or close to the plane P9, on the top of the plate 9, does not hinder access to the mechanical elements located along the plate P9. In the same way, the section 143 is aligned with the plane P10 and offset vertically with respect to the plate 10.

The section 143 includes a connection mouth 149, which, in the present example, serves as a lubricant outlet, by wearing a flow reduction plug or "diabolo". Alternatively, mouth 149 could be completely closed. The mouth 149 is preferably directed in the direction S120, coaxially with the section 143 and is therefore parallel to the mouth 146. The mouth 149 is preferably positioned in the plane P10, as in the illustrated configuration. In any event, the mouth 149 could, alternatively to the mouth 146, serve as an inlet mouth, and the section 143 serve as an intake section for the dispenser 120. For this, the mouth 149 would fluidly connected to the intake duct 147 in place of the mouth 146. To allow this reversal and that one or the other of the lateral sections 141 or 143 is selectively connected to the intake duct 147 and incidentally to the lubrication circuit 111 upstream, the mouths 146 and 149 of the lateral sections 141 and 143 advantageously have the same shape, or at least a shape compatible with the same conduit 147. Also, the arrangement and orientation of the mouths 146 and 149 is advantageously symmetrical with respect to a median plane of symmetry P121 of the distributor 120, orthogonal to the plane P120 and visible in FIG. 7. Thanks to this possibility of reversal, the m me dispenser 120 may be mounted on two different dobbies, in reverse arrangement. It is noted that the plane P121 is advantageously parallel to the planes P9 and P10.

Preferably, the sections 141 and 142 are respectively symmetrical to the sections 143 and 144 with respect to the plane P121. Preferably, all or part of the mounting elements of the distributor, including in particular the elements 126, 127 and 129, are symmetrical with respect to the plane P121. The section 140, advantageously including its rectilinear and curved parts, is preferably symmetrical with respect to the plane P121. Thus the distributor 120 can easily be mounted in several different dobbies of reverse or symmetrical arrangement.

Each lubricant emission mouthpiece is offset in the Z direction relative to one or more of these parts to be lubricated, in order to pour or spray lubricant on it. In other words, the emission mouthpieces are respectively vertically offset above the parts they are configured to lubricate. This requires that each emission mouthpiece is offset in the direction Z relative to the part to be lubricated, being either aligned parallel to the direction Z relative to the part to be lubricated, or slightly offset in the directions X and / or Y.

Preferably, all of the lubricant emission mouths of the distributor 120 are oriented opposite the direction Z, that is to say towards the bottom 5. This includes that the mouths are turned parallel to the direction Z , or by being slightly inclined with respect to the direction Z. More generally, it may be preferable for each mouthpiece to point in the direction of one or more of the parts to be lubricated of the reading system 30. In the present example, each mouthpiece is oriented in a direction orthogonal to the plane P120, directed towards the bottom 5.

The parts to be lubricated of the reading system 30 are preferably the sliding contact zones, in rolling contact and / or serving as a contact surface for abutment. Lubrication can aim to reduce the coefficient of friction of the part to be lubricated. Lubrication may be aimed at cooling the part to be lubricated.

Preferably, the parts to be lubricated of the reading system 30 comprise at least one central part to be lubricated chosen from the different parts of the following connections of the reading system 30:

- the connection comprising one of the legs 43 of the arm 32 and its respective notch 37,

- the connection comprising one of the legs 73 of the arm 62 and its respective notch 67,

- the connection comprising one of the members 33 of the arm 32, its tab 38 and its respective notch 37,

- the link comprising one of the organs 63 of the arm 62, its tab 68 and its respective notch 67,

- the pivot connection of one of the arms 32 with the shaft 34,

- the pivot connection of one of the arms 62 with the shaft 44

the contact link comprising one of the legs 43 of the arm 32 and the leveler 50, and

- the contact link comprising one of the legs 73 of the arm 62 and the leveler 50.

The central parts to be lubricated have in common that they are located between the planes P9 and P10, more precisely between the plates 9 and 10, parallel to the direction Y.

To lubricate these central parts to be lubricated, the mouths of the dispenser 120 preferably include central mouths 130. These mouths 130 are preferably formed by the base 122, as shown in particular in FIGS. 5 and 6. In the present embodiment, all the mouths 130 are carried and fed by the central section 140, in particular by its rectilinear part. The mouths 130 are distributed along the section 140. Preferably, the mouths 130 have a symmetrical distribution with respect to the plane P121. These mouths 130 are directed in a direction orthogonal to the plane P120 and to the plane comprising the own axes of the shafts 34 and 44, while being turned in the opposite direction to the direction Z. The mouths 130 are distributed along an axis Y130 shown in FIGS. 1 and 6, parallel to the axis Y17 and to the plane P120 and parallel to the rectilinear part of the section 140. Preferably, the mouths 130 are regularly distributed along this axis Y130. All the mouths 130 are arranged between the planes P9 and P10, more precisely between the plates 9 and 10 parallel to the direction Y.

In the present example, only eleven mouths 130 are provided, while sixteen levers 14 and sixteen drive devices 19 are provided: each mouthpiece 130 is therefore responsible for the lubrication of parts to be lubricated of the reading system 30 in connection with several levers. 14 and drive devices 19, or in other words, distributed in several planes P32.

As a variant, as many central mouths as there are training devices could be provided, each central mouth then being for example aligned in the same plane P32 or P14 as the part of the reading system 30 associated with the training device concerned.

Alternatively, the number of central mouths may be less than or greater than eleven.

Preferably, the parts to be lubricated in the reading system 30 comprise at least one side lubricating part chosen from the following elements in the reading system 30: the pivot connection of the leveling arm 80 with the shaft 44, the pivot connection of the arm leveling 90 with the shaft 44, the member 85 and its contact with the part 82 of the arm 80, the member 95 and its contact with the part 92 of the arm 90, the end 36 of the shaft 34, being it is understood that lubricant is preferably led along the shaft 34 from the end 36, to lubricate the pivot connections of the arms 32 with the shaft 34, the end 38, for the same reasons, the end 46 of the shaft 44, for the pivot connections of the arms 62, and the end 48, for the same reasons. In general, each side part is located near one of the planes P9 or P10, that is to say preferably in one of these planes, in the immediate vicinity of one of these planes.

To lubricate all or part of these lateral parts to be lubricated, the mouths of the distributor 120 preferably comprise lateral mouths, arranged in the plane P9 and / or in the plane P10, or in the vicinity of these planes. As for the central mouths 130, each lateral mouth is offset in the direction Z with respect to its side part (s) to be lubricated.

Preferably, the lateral mouths are located in the same plane as the central mouths 130, this plane being parallel to the plane P120.

As can be seen in FIGS. 2, 6 and 8, it is possible in particular to provide a lateral mouth 131, carried and fed by the section 141. This mouth 131 is near the inlet mouth 146. This mouth 131 is located close from one end of the leveler 50. The mouth 131 is aligned with the part 82 of the arm 80 in the direction Z. The lubricant emitted by the mouth 131 flows along the part 82 until it reaches the pivot connection of the arm 80 with the shaft 44 to thereby lubricate it. Preferably, the member 85 and its contact with the part 82 of the arm 80 are also lubricated by the mouthpiece 131.

As shown in Figures 2, 6 and 8, one can in particular provide a lateral mouth 132, carried and supplied by the section 142, near the fluid connection with the sections 140 and 141. This mouth 132 is located near the end of the leveler 50 concerned by the mouth 131. The mouth 132 is advantageously offset, in the direction Z, preferably in alignment with the direction Z, relative to the member 85 and its contact with the part 82 of the arm 80, in order to lubricate these elements. For this, the lubricant poured through the mouth 132 trickles, for example, onto a sloping upper edge of the leveling arm 80 until it reaches the member 85.

As shown in Figures 2, 6 and 8, one can in particular provide a lateral mouth 133, carried and supplied by the section 142 at its free end. This mouth 133 is offset in the direction Z relative to the end 36 of the shaft 34, so as to deposit lubricant on the shaft 34. The lubricant is advantageously poured through the opening 128 of the structure 35 , being guided by the lug 126 and / or the positioner 129 carried by the section 142.

More specifically, the dispenser 120 advantageously comprises two fingers 129A. Each finger 129A is close to one of the positioners 129 being longer than the latter, the finger 129A passing through the opening 128, so as to guide the lubricant by trickling along the finger 129A to the lateral part to lubricate.

As shown in Figures 3, 6 and 8, one can in particular provide a lateral mouth 134, carried and fed by the section 143. This mouth 134 is symmetrical with the mouth 131 with respect to the plane of symmetry P121. The mouth 134 is near the mouth 149. This mouth 134 is located near the other end of the leveler 50. The mouth 134 is aligned with the part 92 of the arm 90 in the direction Z. The lubricant emitted by the mouth 134 drops and trickles along the part 92 until reaching the pivot connection of the arm 90 with the shaft 44 so as to lubricate it. Preferably, the member 95 and its contact with the part 92 of the arm 90 are also lubricated by the mouthpiece 134.

As can be seen in FIGS. 3, 6 and 8, it is possible in particular to provide a lateral mouth 135, carried and fed by the section 144, near the fluid connection with the sections 140 and 143. The mouth 135 is preferably symmetrical to the mouth 132 with respect to plane P121. This mouth 135 is located near the end of the leveler 50 concerned by the mouth 134. The mouth 135 is advantageously in the direction Z, preferably in alignment, relative to the member 95 and its contact with the screw 94 which fixes the shaft 50 to the arm 90, in order to lubricate these elements. For this, the lubricant poured through the mouth 135 flows for example on a sloping upper edge of the leveling arm 90 until it reaches the member 95.

As shown in Figures 3, 6 and 8, one can in particular provide a lateral mouth 136, carried and fed by the section 144 at its free end. This mouth 136 is advantageously symmetrical at the mouth 133 with respect to the plane P121. This mouth 136 is offset in the direction Z relative to the end 38 of the shaft 34, so as to deposit lubricant on the shaft 34. The lubricant is advantageously poured through the other opening 128 of the structure 35, being guided by the tab 126 and / or the positioner 129 carried by the section 144.

In the illustrated configuration of the dispenser 120, the lubricant is led into the section 141 from the mouth 146 in a direction L141 opposite to the direction S120, which feeds the mouth 131.

Part of the lubricant of the section 141 rushes into the section 140. In this section 140, the lubricant flows in a direction L140 illustrated in FIG. 6, directed parallel and in the same direction as the direction Y. The mouths 130 are thus supplied in series by the section 140, successively in the direction L140 and downstream of the mouth 131. Another part of the lubricant rushes into the section 142 in a direction L142, if the flow of lubricant supplied by the pump 110 is sufficient. The mouths 132 and 133 are then fed successively, in series with one another, and in diversion with respect to the mouths 130. The mouths 132 and 133 are fed downstream of the mouth 131.

The distributor 120 being inclined relative to the plane defined by the directions X and Y, the sections 142 and 144 are offset in the direction Z relative to the other sections, in particular relative to the sections 141 and 143, so that, due to gravity makes it harder for the lubricant to reach them.

The distributor 120 advantageously comprises a partial partition 148, only partially obstructing the tubular passage section leading to the section 142 from the sections 141 and 140, at their fluid connection node. This partial obstructor 148 is advantageously formed projecting from the base 122 and extends vertically to form an obstacle of height greater than the level of lubricant contained in the section 141 at low speed. The obstructor 148 advantageously has a curved shape in the extension of the curved part of the central section 140. Thus, the obstructor 148 limits the circulation of lubricant up to the section 142, by favoring the circulation up to the section 140, in order to '' ensure that, even at low operating speed of the pump 110, at least the section 140 is supplied with lubricant, to the detriment of the section 142. Nevertheless, in the event of high speed, the section 142 allows overflow to be evacuated -full of lubricant of the section 140 outside the distributor 120, thanks to the mouths 132 and possibly to the mouths 133. In the event of high speed, the section 142 thus makes it possible to derive a part of the lubricant to limit the intake beyond the partition partial 150 at the section 140 and the emission of lubricant at the central mouths 130.

Having traversed the section 140, to its end on the side of the plane P10, an essential part of the lubricant of the section 140 is engulfed in the section 143 in the direction L143, directed like the direction S120. The mouth 134 is thus fed to the section 143, downstream of the mouths 130. The excess is evacuated via the mouth 149, for example in the form of a peripheral net at the periphery of the diabolo. It is preferred that the mouthpiece 149 is positioned in alignment with the end 48 of the shaft 44 in the direction Z, so that the mouthpiece 149 supplies lubricant to this end 48. The network of lubricant formed by the dispenser 120 therefore extends between the mouth 146 located at the base of the plate 9 in the plane P9, and the mouth 149, located at the base of the plate 10 in the plane P10.

It is possible that part of the lubricant coming from the section 140 is engulfed in the section 144 in a direction L144, opposite to the direction L143, if the flow of lubricant supplied by the pump 110 is very high. The mouths 135 and 136 are then supplied successively, in series with one another, and in derivation with respect to the mouths 134 and 149. The mouths 135 and 136 are fed downstream of the mouth 131. Symmetrically with the obstructor 148, The distributor 120 advantageously comprises a partial partition 150 serving as a partial obstructor of the section 144, thus limiting the quantity of lubricant supplying it.

Alternatively, another embodiment may be provided for forming the obstructors, rather than partial partitions, as long as only part of the passage section of the section concerned is obstructed.

As a variant, provision may be made to replace all or part of the lateral mouths 131, 132, 133, 134, 135 and 136, individually, by two lateral mouths close to each other, distributed in the direction S120, in order to ensure that at least one of these two mouthpieces is aligned vertically with a desired lateral lubricating part, for several orientations around the axis Y of the dobby 1, in particular to provide for the possibility that the direction Z is not vertical during the use of the dobby 1. One of the two mouths can then be plugged in situ, the other left free, when one knows the effective orientation of the dobby 1 around from direction Y.

The dispenser 120 is advantageously entirely symmetrical with respect to the plane P121 so that it can be mounted inversely in another dobby having a symmetrical arrangement of its different elements, for example the dobby 201 illustrated in FIGS. 10 to 14. However, in this dobby 201 Figures 10 to 14, another distributor 320 has been mounted according to a second embodiment according to the invention, as explained below. When the distributor 120 is mounted in an inverted manner, the circulation is carried out along a symmetrical path, with respect to the plane P121, to that defined by the directions L140, L141, L142, L143 and L144 so that the components of the machine are advantageously supplied in the same way despite differences in the flow regimes of the lubrication system.

Except for the distributor 320 replacing the distributor 120, the dobby 201 is symmetrical with respect to dobby 1 around a plane parallel to the directions X and Z and has symmetrically the same characteristics, some of which are again referenced in FIGS. 10 to 14. When these references are indicated in FIGS. 10 to 14, they bear the same number as those of the corresponding characteristics in FIGS. 1 to 9. The description of the dobby 1 above therefore therefore applies to the dobby 201, by reversing the direction of direction Y, except with regard to the distributor 320, the differences of which with the distributor 120 are described below. The directions X and Z remain the same as in the description above. The control shaft, the pump, the strainer, the filter and any other element mentioned above, are inverted with respect to the position of the loom and of the frames not illustrated due to the reversal of the direction Y.

The distributor 320, like the distributor 120, is advantageously entirely symmetrical with respect to a median plane of symmetry P321, parallel to the planes P9 and P10.

The distributor 320 preferably forms a rigid integral assembly with a base 322 and a cover 324 joined at a joint plane P320, orthogonal to the plane P321, similarly to the distributor 120. The base 322 and the cover 324 include hooks 323 similar to hooks 123, interacting with grooves not shown, similar to grooves 125, for the same function. The distributor 320 is mounted on the part 39 of the structure 35 in the same way as the distributor 120, in the same orientation, using means similar to the means 126, 127 and 129. In the same way as one defined the direction S120 in view of the plane P120, the direction S320 is defined in view of the plane P320, as shown in FIG. 13.

The distributor 320 includes lubricant circulation conduits within it, like the distributor 120, for distributing and conducting the lubricant supplied by the pump 110 and distributing it. In this second embodiment of FIGS. 10 to 14, these conduits comprise seven tubular sections, including a central section 340 and six other sections 341, 342, 343, 344, 341A and 343A. Preferably, each of the sections is essentially, or even totally, straight, except for the sections 342 and 344 which are partially curved.

The distributors 120 and 320 advantageously consist of sections for distributing the lubricant at a maximum of sensitive mechanical points of the reading system and of the machine, without being bulky or covering the mechanical assembly, which we prefer to leave accessible to the maintenance.

Each section has a tubular cross-section, preferably circular or ovoid, as shown for example in FIG. 14, in order to form one of the lubricant conduits of the distributor 320, except possibly the section 340, as defined below.

Preferably, each section of the distributor 320 extends in the plane P320, like the sections of the distributor 120.

The central section 340 extends parallel to the direction Y17, being offset in the direction Z relative to the reading system 30. The section 340 is in particular aligned in the direction Z with the members 33 which it supplies through its central mouths 330, as shown in FIG. 12. The section 340 is set back from the edge 41. The section 340 connects the plane P9 to the plane P10, or at least extends between the plates 9 and 10, in consideration of the direction Y.

The sections 341 and 343 are similar to the sections 141 and 143, respectively. In particular, the sections 341 and 343 are lateral sections, extend parallel to the direction S320 respectively in the planes P10 and P9. The sections

341 and 343 respectively carry a connection mouth 346 and 349, with the same characteristics as the mouths 146 and 149. In the present example, it is the mouth 349 which is connected to the conduit 147, while the diabolo partially blocks the mouth 346. The lubricant network formed by the dispenser 320 therefore extends between the mouth 349, directly above the plate 9 in the plane P9, and the mouth 346, above the plate 10 in the P10 plan. The plane P10 of the plate 10 of the dobby 1 is opposite the pump 110 and the control shaft relative to the plane P10 of the plate 10.

The sections 341 and 342 extend in the plane P10, while the sections 343 and 344 extend in the plane P9.

The sections 341 and 343 are fluidly connected to the section 340 respectively via the sections 341A and 343A, respectively at their opposite end from the mouths 346 and 349. The sections 341A and 343A are connected to the section 340 to a distribution node 340A of the distributor 320, located at plane P321. More specifically, the section 341A is connected to the section 340 in the direction Y relative to the plane P321 while the section 341A is connected to the section 340 on the other side of the plane P321. Each section 341A and 343A extends in an oblique direction of the plane P320 relative to the axis Y, so that the sections 341 A, 343A and 340 draw a network in the form of "K". The section 340 can therefore be separated into two derived sections 340B and 340C, on either side of the plane P321.

The section 342, is a lateral section comparable to the section 142, is fluidly connected to the section 340B and extends, from the section 340B, in the direction S320, so as to be, at its other end, coaxial with the section 341 The tubular section of the sections 341 and 342 is continuous, but the sections 341 and 342 are fluidly separated, a complete partition 348 completely blocking access to the section

342 directly from section 341.

The section 344, is a lateral section comparable to the section 144, is fluidly connected to the section 340C and extends, from the section 340C, in the direction S320, so as to be, at its other end, coaxial with the section 343 The tubular section of the sections 343 and 344 is continuous, but the sections 343 and 344 are fluidly separated, a complete partition 350 completely blocking access to the section 344 directly from the section 343.

In the present case, the distributor 320 is supplied via the mouth 349, so that the lubricant progresses in the section 343 in a direction L343 in the opposite direction to the direction S320. The lubricant is then led in the section 343A while being directed towards the node 340A, that is to say towards the plane P321.

The distributor 320 comprises several emission mouths carried by the base 322, oriented towards the bottom 5 along an axis orthogonal to the plane P320.

The emission mouths include central mouths 330, carried and fed by the section 340, being regularly distributed along an axis Y330 parallel to the direction Y. More precisely, as many mouths 330 as levers 14 are provided. , the mouths 330 being respectively disposed in the respective planes P32 or P14 associated with these levers 14.

The section 340B carries and supplies a first part of the mouths 330, namely eight, while the other section 340C carries and supplies the others. In the sections 340B and 340C, the lubricant circulates in an antagonistic manner in directions L340B and L340C, in the direction of the planes P9 and P10, from the node 340A, which supplies these sections 340B and 340C. The mouths 330 of the section 340B are therefore supplied in series successively from the node 340A to the plane P10, while the mouths 330 of the section 340C are supplied in series successively from the node 340A to the plane P9.

As an exception, the section 340 optionally has, as shown in FIGS. 13 and 14, a cross-section in the form of a bridge, or in the form of an inverted "U", the wall of the base 322 being deformed towards the inside of the tubular form. , in the direction Z, so as to form a longitudinal dam 380, parallel to the direction Y. The dam 380 advantageously does not extend beyond the plane P320. In the central part, parallel to the direction Y, of the section 340, the breakwater 380 is extended by a partial partition 381, which extends over only a part, for example along only half of the breakwater 380. The top of the partial partition 381 extends a short distance from the cover 324, beyond the plane P320, nevertheless providing a lubricant passage gap from one side to the other of the partition 381 between the latter and the cover 324. The partition 381 advantageously separates the section 340 into two lower and upper parallel gutters. The mouths 330 are advantageously formed in the direction opposite to the direction S320 with respect to the partition 381. Also, the extremal central mouths 330 are preferred in their supply of lubricant, by the existence of the partial partition 381. Thanks to this arrangement , the lubricant provided by the node 340A is distributed more equitably between the mouthpieces 330 by the overflow of the lower gutter, even for a low speed of the pump 110. Then, the mouthpieces 330 can be supplied in a different order from that mentioned above -before. This effect can be further accentuated by the presence of obstructors 351 and 352, formed here by respectively by partial partitions, to partially close the respective lateral ends of the central sections 340B and 340C, in order to limit the transmission of lubricant to the sections 342 and 344, especially if the lubricant flow is low. The obstructors 351 and 352 preferably project from the base 322. In particular, the obstructors 351 and 352 extend vertically to form obstacles of height greater than the level of lubricant contained in the section 340 at low speed.

As for the example of the distributor 320, the construction of a “K” distributor thus has the advantage of distributing the mouths of the derived sections equitably from the plane of symmetry P321 to the planes P9 and P10 symmetrically, unlike the distributor in "H", where the central section leads the lubricant to the mouths in series between the plane P9 and the plane P10. Thus, with a distributor whose contribution of the central conduit is done by the middle of the distributor, at the level of the plane of symmetry of the distributor, or by a distribution node positioned in the plane of symmetry, the distribution of the lubricant is guaranteed more equitably along the Y axis between the two halves of the reading system 30. Lubrication is therefore improved.

As shown in FIG. 12, the mouths 330 are advantageously aligned in the direction Z with respect to the members 33 and the legs 38 in order to lubricate them. The lubricant emitted can also advantageously run off, in particular along the part 39 of the structure 35 in order to also lubricate the legs 43, or along the arms 32 to lubricate their pivot connection with the shaft 34.

The mouths of the dispenser 320 also include lateral mouths, arranged in the plane P9 and / or in the plane P10, or in the vicinity of these planes.

A lateral mouth 334 with the same function and the same position as the mouth 134 is carried and fed by the section 343.

If the flow is sufficient, a small part of the lubricant of the section 340 is transmitted to the section 341A in the direction of the plane P10, in a direction L341A. The lubricant then flows in the section 341 in a direction L341 in the same direction as the direction S320. As can be seen in FIGS. 11 and 13, a lateral mouth 331 can be provided, carried and fed by the section 341, for the same function and arrangement as the mouth 131. Lubricant can also be emitted, for example in the form of a peripheral net around the diabolo carried by mouthpiece 346.

Part of the lubricant circulating in the section 340 is transmitted to the sections 342 and 344. Each of the sections 342 and 344 carries a pair of lateral mouths, 332 and 333, as visible in FIGS. 11 and 13. For each section 342 and 344, the mouths 333 and 332 are successively supplied in series, the mouth 333 being upstream of the mouth 332.

The presence of the two mouths 332 and 333 makes it possible to distribute the supply of lubricant along the plates 9 and 10, so that all the lateral parts to be lubricated can be lubricated, even if the dobby 201 is inclined around its axis Y. Indeed, for each section 342 and 344, at least one of the two mouths 332 and 333 is found aligned vertically respectively with the member 85 and the member 95.

The lubricant contained in the sections 342 and 344 is entirely discharged via the mouths 332 and 333, advantageously without penetrating into the sections 341 and 343, due to the complete partitions 348 and 350.

Also, the mouths 332 and 333 allow, symmetrically with respect to the plane P321, to evacuate the lubricant overflow of the section 340 out of the distributor 320 in the event of high flow. In particular, the sections 342 and 344 thus make it possible, by overflow, to distribute the supply of lubricant beyond the partial partitions 351 and 352 to limit the emission of lubricant at the level of the central mouths 330.

Thanks to the particular geometry of the two distributors 120 and 320 described above, all the orientations relative to the ground generally implemented for the dobby do not prevent equitable lubrication at least of the parts to be lubricated central. This equitable lubrication is obtained despite any inclination of the dobby 1, for example around the X axis between -5 and 5 ° and / or around the Y axis between -20 and 20 °.

Thus, the distributor 120 and the distributor 320 each constitute a distribution assembly which brings together the lubrication functionalities of all the parts of the reading system 30. The distributors 120 and 320 advantageously take advantage of the volume of incoming lubricant available. from a single supply mouth of the lubrication circuit 111, towards the mechanics to be lubricated. The lubricant can therefore be distributed by one of the distributors 120 or 320, whatever the configuration required of the dobby, and the speed regime maintained by the loom. Each of the distributors 120 and 320 is an integrated assembly, quickly operational, requiring no accessory, no additional tool, nor adjustment for its installation, maintenance or operation.

Alternatively, the distributor may include additional sections than those described above, also provided with emission mouthpieces, in order to supply lubricant to other parts of the dobby, which may belong to organs which are not the reading system 30.

Alternatively, the connection mouths may have a shape different from those described above. For example, the connection mouthpieces are bent, or incorporate quick connection means, screw connection. Rather than the conduit 147 which forms a flexible pipe, the distributor can be connected to a channel formed directly in the frame and connected to the pump. As a variant, this channel can be partially formed in the frame between the dispenser connection mouth and the pump, for example in the plane P9 through an upper edge of the plate 9.

As a variant, two or more than two connection mouthpieces can be connected to the lubrication circuit so as to supply the distributor with different sources of supply of lubricant. For this variant, a symmetrical distributor construction is preferred where the mouths are symmetrically distributed with respect to the plane of symmetry P121 or P321. For example, the two connection mouths 146 and 149 may both serve at the same time to admit lubricant to the dispenser, and not selectively as illustrated.

Alternatively, the arrangement and shape of the emission mouths may vary from the above examples. The shape of the mouthpieces can vary within the same section of the dispenser. For example, a mouth may be formed by a slot or a hole formed in the base of the dispenser, to perform the function of dispensing lubricant for the machine.

Claims (15)

1.- Rotary dobby (1; 201) for a loom, the rotary dobby (1; 201) comprising: - a frame (3) comprising a bottom (5), as well as a first and a second plates (9; 10) respectively defining a first support plane (P9) and a second support plane (P10) passing through the bottom ( 5), being parallel and distant from each other; - a lubrication system (110, 112, 114, 147) comprising a lubrication circuit (111) and a pump (110) for circulating the lubricant in the lubrication circuit (111); - a common shaft (12), supported by the frame (3) and extending between the first support plane (P9) and the second support plane (P10); - output levers (14), mounted movable in rotation around the common shaft (12) between the first and the second support planes, and driven by alternative oscillation movements during weaving; - a drive shaft (17) of the output levers, supported by the frame (3) and extending between the first support plane (P9) and the second support plane (P10); - mechanical drive devices (19) mounted around the drive shaft (17), each drive device being configured to switch between: o a coupled configuration, in which the drive device (19) subjects the rotational mobility of one of the output levers (14) to the rotation of the drive shaft (17), and o a decoupled configuration , wherein the drive device (19) frees the rotational mobility of said output lever (14) from the rotation of the drive shaft (17); - a reading system (30), configured to selectively switch the drive devices (19) between the coupled configuration and the decoupled configuration, the drive shaft (17), the common shaft (12), the devices drive (19) and the reading system (30) being offset in a height direction (Z) relative to the bottom (5); characterized in that the lubrication system (110, 112, 114, 147) comprises a lubricant distributor (120; 320), which is distinct from the common shaft (12), and which comprises several emission mouthpieces (130 -136; 330-334) of lubricant, which are supplied with lubricant by the lubrication circuit (111) and which are offset in the height direction (Z) relative to the reading system (30). 2, - Rotary dobby (1; 201) according to claim 1, characterized in that: - the reading system (30) comprises central parts (32, 33, 37, 38, 43, 44, 62, 63, 67, 68, 73) located between the first support plane (P9) and the second plane support (P10); and - the emission mouths (130-136; 330-334) of the lubricant distributor (120; 320) include central mouths (130; 330), which are distributed along at least one section (140; 340) distributor, parallel to the drive shaft (17), the central mouths being offset in the height direction (Z) relative to the central parts of the reading system. 3. - rotary dobby (1) according to claim 2, characterized in that the distributor (120) comprises a central section (140) carrying the central mouths (130), which are distributed between the first support plane (P9) and the second support plane (P10), the central section (140) supplying the central mouths (130) in series with lubricant, from the first support plane (P9) to the second support plane (P10). 4, - Rotary dobby (201) according to claim 2, characterized in that the distributor (320) comprises: - a lubricant distribution node (340A); - a first derived section (340B) carrying a first part of the central mouths (330), the first derived section extending from the distribution node to the first support plane (P9); and - a second derived section (340C) carrying a second part of the central mouths (330), the second derived section extending from the distribution node to the second support plane (P10). 5. - rotary dobby (1; 201) according to any one of claims 2 to 4, characterized in that: - the reading system (30) comprises: o a leveler (50), which is movable between two distinct positions relative to the frame (3), the leveler being driven in an oscillation between the two positions by rotation of the drive shaft (17), o for each device drive (19), at least one respective reading arm (32, 62) which is movable in rotation relative to the frame (3), this rotation being limited by an abutment of an abutment tab (43, 73) of the tonearm against the leveler, o for each tonearm, an elastic arm return member (33, 63), exerting an elastic restoring force against said tonearm, tending to maintain the tonearm in stop against the leveler by means of the stop tab; and - The central parts (32, 33, 37, 38, 43, 44, 62, 63, 67, 68, 73) include the stop tabs and / or the elastic arm return members. 6. - Rotary dobby (1; 201) according to any one of the preceding claims, characterized in that - the reading system (30) comprises lateral parts (34, 36, 38, 46, 48, 80, 82, 85, 90, 92, 95) located near the first support plane (P9) and / or the second support plane (P10); and - the emission mouths (130-136; 330-334) comprise at least one lateral mouth (131-136; 331-334), arranged in one of the support planes (P9, P10) and offset in the direction in height (Z) relative to one of the lateral parts. 7, - Rotary dobby (1; 201) according to claim 6, characterized in that: - the reading system (30) comprises: o a leveling shaft (44), which extends between the first support plane (P9) and the second support plane (P10) being orthogonal to the first support plane (P9); o at least one leveling arm (80, 90) extending in one of the support planes (P9, P10) and comprising a pivot connection via which said at least one leveling arm is supported by the 'leveling shaft being movable in rotation between a two positions around the leveling shaft relative to the frame (3); and o at least one elastic leveling return member (85, 95), exerting an elastic return force tending to maintain said at least one leveling arm in one of the two positions, the elastic leveling return member being disposed in the same support plane as said at least one leveling arm; - the lateral parts (34, 36, 38, 46, 48, 80, 82, 85, 90, 92, 95) include: o the pivot connection between said at least one leveling arm and the leveling shaft, the lateral mouths comprising a first lateral mouth (131, 134; 331, 334) offset in the height direction (Z) relative to the connection pivot in order to lubricate it with lubricant, and / or o the elastic leveling return member, the lateral mouths comprising a second lateral mouth (132, 135; 332, 333) offset in the direction of height (Z) relative to the elastic return member in order to lubricate it with lubricant. 8. - Rotary dobby (1) according to any one of claims 6 or 7, characterized in that: - the reading system (30) comprises a reading shaft (34), which is orthogonal to the first support plane (P9) and which comprises a first end (36) crossed by the first support plane (P9) and a second end (38) through which the second support plane (P10) passes; - the lateral parts comprise the first end and the second end of the reading shaft, the lateral mouths comprising: o a third lateral mouth (133, 136) offset in the height direction (Z) relative to the first end; and a fourth lateral mouth (133, 136) offset in the height direction (Z) relative to the second end. 9. - Rotary dobby (1; 201) according to any one of the preceding claims, characterized in that the distributor (120; 320) forms a rigid integral assembly. 10. - Rotary dobby (1; 201) according to any one of the preceding claims, characterized in that the distributor (120; 320) comprises two connection mouths respectively located in the first support plane (P9) and in the second support plane (P10) and being configured to be selectively connected to a duct (147) supplying the distributor with lubricant. 11. - Rotary dobby (1; 201) according to any one of the preceding claims, characterized in that the lubricant distributor (120; 320) comprises a lateral section (141, 143) extending in one of the two support planes (P9, P10), being offset in the height direction (Z) relative to the plate (9, 10) which defines this support plane and being able to be fluidly connected to the lubrication circuit (111) in this support plan. 12. - Rotary dobby (1; 201) according to any one of the preceding claims, characterized in that: the distributor (120; 320) defines a plane of symmetry (P121, P321) parallel to the first support plane (P9) and - the mouths (130-136, 146, 149; 330-334, 346, 349) are distributed symmetrically on either side of the plane of symmetry. 13. - Rotary dobby (1; 201) according to any one of the preceding claims, characterized in that the distributor (120; 320) comprises at least two tubular sections (141, 142; 340, 340B) each carrying at least l '' one of the emission mouths (131, 132; 330, 333), the two tubular sections being fluidly connected to each other at a passage section, the passage of lubricant from one section to the other being limited by a partial obstructor (148, 150; 351, 352) of the passage section, for example a partial partition. 14. - Rotary dobby (1; 201) according to any one of the preceding claims, characterized in that the dispenser (120; 320) comprises latching tabs (126) for its attachment to the frame (3). 15. - Rotary dobby (1; 201) according to any one of the preceding claims, characterized in that the distributor (120; 320) comprises: - a base (122; 322), forming the emission mouths (130-136; 330-334), and - A cover (124; 324), joined with the base, preferably by snap-fastening, at a joint plane (P120; P320) of the distributor (120; 320), to form, with the base thus joined, lubricant circulation conduits within the distributor (120; 320), the conduits extending parallel to the joint plane and all passing through the joint plane, the cover being offset in the height direction (Z) relative to the basement. 16. A weaving machine comprising a rotary dobby (1; 201) according to any one of the preceding claims.