FR2641006A1 - - Google Patents

Abstract

In a device for inserting sliders 3 in the rings of spinning or twisting looms, a housing 1 comprises a support bar 6 mounted to slide, which can be applied to the ring, and comprising a support edge which rests on the upper face of the ring throughout the insertion process, as well as a stop 8 which comes to rest on said ring, and determines the longitudinal position of the support bar 6.

Description

DEVICE FOR INSERTING CURSORS IN THE RINGS OF

SPINNING OR WRAPPING

  The present invention relates to a device

  of insertion of cursors in the rings of trades of fi-

  lage or twisting, comprising a box which serves as poi-

  and to which is fixed a slider holder pin, intended

  born to receive several sliders to put on, as well as a

  separating mechanism which individually presents the cur-

  seurs to the ring, from said pin.

  Known devices of this kind accuse the

  convenient that the handling is very strong-

  depends on the individual skill of the operator, which implies frequent unsuccessful attempts,

  as well as unnecessarily large enlargements of the cur-

  sors, which exceed the admissible elastic limit, so that the said sliders become unusable. Proposals, aimed at making integration arrangements

  sliders less dependent on individual manipulation-

  the, by performing the insertion process by means of the-

  vier extractors of the pistol type, have the disadvantage of making the whole device very complicated and heavy, if

  although the hand that actuates it gets tired quickly.

  The object of the invention is to develop a new device for inserting sliders, of the type described above, which is largely independent of individual skill.

  operator, so as to considerably decrease the event

  tuality of false maneuvers. In accordance with the invention,

  the solution of the object sought is that the wood

  tier has a sliding mounted support bar, for

  before being applied to the ring, and comprising an edge

  support which rests on the upper face of the ring

  during the whole insertion process, as well as a stop which

  is applied to said ring, and determines the posi-

  longitudinal position of the support bar. This provides a secure mutual assignment of the device and

  the ring, which excludes in this respect the skill of the opera-

  and avoids the possibility of false maneuvers in re-

  sultant. Partial longitudinal positioning is obtained

  particularly sure that the stop on the bar

  support rette, is made in the form of a stud trapping the ring from behind from the inside. When, in accordance with another characteristic of the invention, the support bar can slide relative to the housing in

  opposing the action of a force accumulator, preferably

  rence a tension spring, the insertion process of the sliders can be triggered by a simple movement of

  pull printed on the case. This dispenses with levers

  particular triggers, as well as the mechanism claimed by

these latter.

  According to another characteristic of the invention, the carrier pin, preferably mounted fixed on the

  housing, can extend, by its front end rotated

  born towards the ring, up to the area in front of the support bar; in this way, as soon as the device is engaged on

  the ring, the cursor to be inserted engages

  the collar of the ring, from the inside

  of this ring, then is threaded from the inside onto the

  so-called collar, by the pulling movement printed on the handle. In this case, according to another characteristic of the invention, in order to obtain a secure positioning of the cursor, a slider stop lever, mounted sliding relative to

  to the support bar, can be interposed between this bar-

  support ridge and the front end of the holder pin

  sliders; preferably, said lever is slidably mounted as a function of the position of the support bar, so that, during the tensile movement of the housing, it frees the cursor for insertion into the ring. he can

  then be particularly advantageous that the rear lever

  rêt is mounted on the housing, and can slide in combination

  ciation with a slide; thus, on the one hand it frees the cursor in good time without it being subjected to an undesirably strong enlargement, but, on the other hand

  however, the anterior end of the curvature pin

  sors is still closed before the device is released

  of the ring, so that no cursor is lost.

  According to the invention, another measure to improve the functional reliability of the device, and to circumvent the individual skill of the operator, consists in that a blocking spring, removably retaining the anterior cursor, is associated with the anterior end of

  the slider holder pin; on the one hand the cursor li-

  fed by the separating mechanism, for the process of in-

  setting, is kept on hold in the insertion position

  most favorable tion, while being however, on the other hand, released in good time. It may then be advantageous for the slider blocking spring to be fixed to the housing, and to be triggered by the relative movement of said housing and of the support bar. To trigger said blocking spring, a stud can be provided on said support bar which, during the relative movement, moves the blocking spring a sufficient distance away from the front end of the slider holder spindle, opposing its elastic force, and releases this spring again after the sliding of the successive slider in front

be inserted.

  To improve the security of delivery of

  sliders to the front end of the holder pin

  sliders, it may be advantageous for this pin to form, at least in its anterior region, an angle between 12 degrees and 30 degrees, preferably about 21 degrees

  with a horizontal determined, respectively, by the ar-

  support te or by the upper face of the ring. In this case, moreover, the section of the slider holder spindle

  can be performed with progressive decrease at its ex-

  anterior end, at least in the region of the spring of

slider blocking.

  In slider insertion devices,

  comprising a separating mechanism which presents individual-

  the sliders on the ring, from the holder pin

  sliders, we repeatedly come up against difficulties consisting of the sliders not sliding with sufficient safety in the region between the mechanism

2 6 41 0 0 6

  separator and the anterior end of said pin, by

  example due to fouling. According to another character-

  teristic of the invention, this can be improved by the fact that the slider-holder spindle has a recess at its anterior end, on the side facing the rear face of the sliders, at least approximately as far as the vicinity of a beak of dissociation of the sliders limiting the advance of these sliders, so that the rear face of said sliders rests, on said pin, only by

  its two ends facing the bases of said sliders.

  This results in a decrease in the contact surface of the cursor with the spindle, which increases the ability of said

slide cursor.

  Various separate mechanisms have already been proposed.

  rators fitted with slider insertion devices, which however did not always meet the practical requirements of a textile factory. According to the invention, this can be improved thanks to a separating mechanism in which we have associated with the carrier pin, in its anterior region, a slider locking spout limiting the advance of the sliders, as well as a spout slider dissociation, which separates the previous cursor from the rest of the slider pool. In this case, the dissociation spout can be associated with the side of the slider pin on

  which is the opening of the sliders, and can be animated

  mé of a movement, through a slit practiced in the-

  said spindle, up to the area behind the rear face of the anterior cursor. When, moreover,

  the dissociation spout is designed so that it pre-

  feels, on the side facing the front end of the slider pin, a ramp made so that it

  prints, at the cursor released by the blocking spout, a push

  seated in the direction of the anterior end of said spindle, the cursor must not only slide, under the action of its own gravity, to the anterior end of the spindle, but it undergoes an additional acceleration which increases safety sliding forward and the cursor speed. To ensure flawless operation of the

  separating mechanism, it is advantageous that the blocking spout

  slider cage is slidably mounted relative to the dissociation spout of these sliders, for adjusting the width of said sliders. When, according to another characteristic of the invention, the surfaces of the respective blocking and dissociation spouts are connected to two jaws

  mutually opposed clamping, between which a cur-

  seur-type can be stuck for width adjustment, a

  special measuring system is superfluous. The wedge

  The standard cursor between the two clamping jaws takes place in a particularly simple way when these two jaws can be pressed against each other.

by the force of a spring.

  Especially in the presence of wear phenomena, it

  may happen that a cursor seizes, at the anterior end

  lower of the slider holder spindle, with the stop lever of said sliders, so that it must be removed by hand. According to another characteristic of the invention, to facilitate this intervention, said stop lever can be sliding out of the support zone of the cursor, by means

  a slide that can be operated by hand. A form of achievement

  Particularly simple tion of the entire device can be obtained when the slide is used simultaneously to open the clamping jaws, between which a standard slider can be wedged in order to adjust the width of the separating mechanism. To avoid, however, when

  cursor stuck is respectively removed from the

  anterior part of the cursor holder pin or the cursor stop lever, a simultaneous fall of the standard cursor

  width adjustment, wedged between the clamping jaws

  ge, the slide can be sliding in different directions, for the actuation of said stop lever

  and the opening of said clamping jaws.

  The invention will now be described in more detail.

  tail by way of nonlimiting example, with regard to the accompanying drawings in which:

  Figure 1 is a side elevation of the device

tif according to the invention;

  Figures 2 to 10 illustrate various parts

  dividends; and FIGS. 11 to 13 show different positions during the insertion of a cursor into a ring.

  As shown in Figure 1, the device conforms to

  me to the invention, to insert sliders into the rings

  of spinning or twisting trades, consists of a box

  tier 1 which serves as a handle and to which is fixed a pin 2 sliders, intended to receive several sliders 3 to be threaded; and a separating mechanism 5 which includes a

  nozzle 27 for dissociating the sliders and a nozzle 28 for blocking

  of the cursors, and individually presents the cursors 3 to a ring 4, illustrated in FIGS. 11 to 13, from

  of said spindle 2. The casing 1 comprises a device bar

  pui 6 sliding mount, can be applied on the an-

  neau, and comprising a support edge 7 (Figure 6) which

  poses on the upper face of the ring throughout

  insertion process, as well as a stopper 8 which comes

  bend on said ring, and determines the position longitu-

  dinal of said bar. As clearly shown in FIGS. 6 and 11 to 13, this stop 8 formed on the bar 6 is produced in the form of a trapped chin

  the ring from behind, from the inside.

  The support bar 6 can slide relative to the housing 1 by opposing the action of an accumulator of

  force materialized, in this case, by a tension spring 9.

  It can also be seen that the pin 2 slider carriers, my-

  fixed tee on the housing 1 in the embodiment, extends to the area located in front of the support bar 6 by its front end 2a, facing the ring. A slider stop lever 10, slidably mounted relative to the support bar, is interposed between this bar 6 and the front end 2a of the spindle 2. Furthermore, there is the presence of a spring 12 slider blocking which is associated with the anterior end 2a of the pin 2, and removably retains an anterior cursor 3a by means of a stud 13. In order not to further overload the overall illustration of the device, already rich in details, other particularities are illustrated on the

Figures 2 to 10.

  Figure 2 highlights the housing 1, made in the form of a box. In order to simplify assembly, this

  housing 1 is not made in one piece until the former

  anterior end of the device. Its front part 1a (FIG. 6) is fixed to said housing i by bolts 15 and 16. A bolt 17 serves to retain a dowel 18, a groove 18a of which is intended to receive the rear end

  9a (Figure 4) of the tension spring 9, the front end

  lower 9b thereof being hooked into a dowel 19 (Figure 6) fixed to the support bar 6. We can also see, in Figure 2, two bolts 20 and 21 engaging in holes 20a and 21a (figure 5) practiced in ears 22

  and 23 subject to the pin 2 slider holders, which ver-

  said pin 2 on the housing 1 rust.

  again, finally, a tapped hole 24 which is drilled in the ex-

  front end of the part of the housing configured in a box, and into which a bolt 25 can be inserted which, by means of a clamping wedge 26, subjects the housing 1 to the spout 27 for dissociating the sliders. In the exemplary embodiment, this spout 27 is designed in the form of a metal part connected to an elastic tape 29, but can also be removed when said tape 29 is prominent in this region, and is bent in accordance with the profile of the metal part. On the side facing the front end of the slider pin,

  the spout 27 has a ramp 30 which prints, at the cursor available

  company of the slider reserve, an additional push towards the anterior end of said spindle,

as set out below.

  FIG. 3 represents the lever 10 for stopping the sliders, the front end 31 of which is made in

  chin shape. We observe the presence, in a mà-

  tightening choir 33, of a tapped hole 32 in which, in accordance with FIG. 8, a screw 72 can be engaged by crossing a hole 32a (FIG. 6) of the stop lever 10,

  to fix the clamping jaw 33 to this lever 10. As-

  socially to a clamping jaw 34 mounted coulis-

  health by opposing the force of a spring 35, the clamping jaw 33 is used to enclose a standard slider 36 for adjusting the width of the separating mechanism 5. A screw 40,

  can be guided through a hole 39 drilled in the mast

  tightening choir 34, enters a tapped hole 43 of a retaining wedge 44, by crossing a hole 41 made in a strip 42 provided with the slider blocking spout 28, so that said screw 40 locks the strip 42 on the clamping jaw 34, together with said locking spout 28. FIG. 5 shows the pin 2 slider carriers and clearly reveals that the anterior end 2a of this

  last is narrowed, that is to say that its section is

  read with progressive decrease. A lock spring

  lage 45 of a known type, shown at the posterior end

  The spindle 2 has the function of preventing sliders 3, coming from the slider reserve, from sliding backwards on said spindle. There is also a distinction, at the front end of this pin 2, a recess 46 provided with a slot 47 which can be crossed by the spout 27

  of dissociation of the cursors, as explained below in re-

  gard of FIGS. 11 to 13. The recess 46 can also be produced as a slot, but it suffices that it forms, in the slider-holder spindle, a recess designed so that a rear face 48 of the sliders rests , on said pin 2, only by its two ends

  turned towards bases 49 of said cursors, in order to

  put an easier sliding of the sliders, on the bro-

  che, in the anterior region of the latter. It's here

  reason why said recess 46 extends, in a ma-

  advantageous, at least approximately until

  sinage of the slider dissociation spout, respectively, in the case shown, up to the slot 47 crossed by

this dissociation beak.

  FIG. 6 represents the mutual association of the front part 1a of the housing, of the support bar

  6 and the slider stop lever 10. As already mentioned-

  born during the description in support of figure 2, the par-

  tie the housing is attached to this housing 1 by means of the

  lon 15 entering a tapped hole 15a. Bolt 16,

  intended to provide additional stabilization and enga-

  managed through a hole 16a, can penetrate into a plug 50 with an internal thread. The end of this pin 50 which faces the bolt is narrowed in accordance with the diameter of a hole 51 made in the stop lever 10,

  with a complementarity allowing a pivoting of said le-

  screw 10 around said dowel 50.

  A piece 53 for retaining the locking spring, for example fixed by means of a stud 52a in another hole 52 drilled in the part 1a of the housing, is pierced with a hole

  54 crossed by a screw 55 which crosses the block spring

  ge 12 by a hole 12a and is fixed, by means of a shim

  clamping 56, in a recess 53a of said piece 53 of re-

spring holding.

  We very clearly distinguish the presence, in

  the support bar 6, of a recess 57 into which

  be a slide 11 fixed in a hole 58 in the lever 10 for stopping the sliders. A hole 59 made in the bar

  support 6 secures the stud 13 which, as explained

  qué below, cooperates with the spring 12 for blocking

  sliders to remove locks from them.

  When the bar 6 slides respectively with respect to the boot 1 or the front part 1a thereof, in the longitudinal direction, this bar 6 slides on the one hand, by its edge 6a, on a projection 61 of the front part of the housing and on the other hand, by its upper face 6b,

  on a surface 60 in recess in said part la.

  A tenon 63, fixed in a hole 62, moves in a bou-

  barrel 64 of part la of the casing. Finally, we can see on the support bar 6, between the support edge 7 and the stop 8, a notch 65 in which the wire can be

  hooked when the cursor is inserted in the ring.

  Figures 7 and 8 illustrate, respectively, individual parts of the clamping jaws 33, 34, and the cooperation of these jaws 33 and 34 with the lever 10

  stop cursors. As the fi-

  Figure 8, the clamping jaw 33 is fixed to the lever 10 by means of the screw 72 which is engaged by the hole 32a (FIG. 6) of said lever 10, and is screwed into the tapped hole 32. The clamping jaw 34 can slide on the lever 10 through its recess 66. It is then guided by the barrel of a screw 67 which can be inserted, passing through a hole 68, in

  a threaded hole 69 of the jaw 33. The spring 35, presses

  sant one against the other the jaws 33 and 34, rests on the barrel of said screw 67. Two studs 70 and 71 can

  be engaged in jaw holes 34 serve to re-

  slide the beak 27 for dissociating the sliders, as shown

in support of Figures 11 to 13.

  Figures 9 and 10 illustrate cooperation between

  be the support bar 6, the front end 31 of the

  vier 10 stop sliders and, respectively, the housing 1 or its front part la, in two different movement phases. Figure 9 then shows the initial situation,

  during the engagement of the device on the ring, and the

  re 10 has an intermediate position during the process

  above insertion, similar to that illustrated in the figure

  12. To provide a better overview, we have not always

  However, not shown in Figures 9 and 10, the elements located at the front of the device, such as the pin

  2 slider holders, clamping jaws 33, 34 and the

  separator mechanism 5. A comparison of FIGS. 9 and 10 clearly reveals the manner in which the support bar 6 is driven by sliding above the front part 1a of the case. The slide 11 has slid upwards in the recess 57 and has raised the stop lever 10, so that the front end 31 of the latter has been able to release the cursor for threading on the ring . During further traction exerted on the housing, the stud 13 will raise the slider blocking spring 12, fixed to said housing by means of the retaining piece 53, which

  causes a triggering of said spring 12 following the movement

  relative ment of the housing and the support bar 6. The cur-

  his imprisoned freer is thus released, and a new cursor can slide towards the anterior end 2a of the pin 2 cursor carriers. In the case where, for whatever reasons, a cursor has become stuck at the anterior end of the spindle, the stop lever 10, and consequently also its anterior end 31, can also be animated d 'manual sliding. To authorize the latter, the clamping jaw 34, mounted by its recess 66 on

  said lever 10 in accordance with FIGS. 7 and 8, is extended

  down so that this end can

  act as a slide 72 'when pressure is applied to it

  posed in the direction of an arrow 73. In this case,

  during, the pressure exerted on said jaw 34 is not

  not modified by spring 35, so that the cursor-

  type 36 remains stuck. When the slide 72 'is moved

  opposing the force of the spring 35, and at this stage only

  Likewise, said standard cursor may fall and another cursor-

  type can be introduced. Because the slide 72 'can slide in different directions, it can be used both for actuation of the stop lever 10 and for opening

clamping jaws 33 and 34.

  The operating mode of the compliant device

  to the invention is commented on in support of FIGS. 11 to 13.

  We can see, in these figures, the ring 4 which surrounds the front end of a spinning can 74, and on which the support bar 6 is applied by its support edge 7 described opposite the figure 6. Wire F is

  hung in the notch 65 described in support of the fi

  gure 6 and it is therefore also inside the front slider 3a which is intended for insertion and which, after its release by the locking spout 28 forming part of the separating mechanism 5, has slid towards the front, up to the area located in front of the end 31 of the stop lever 10, on the spindle 2 slider holders inclined by

  angle preferably measuring 21 degrees from the clock

  rizontale. In this position, the cursor is retained on pin 2 by means of the locking spring 12

sliders.

  FIG. 12 illustrates, in conjunction with the fragmentary section on an enlarged scale of FIG. 12a, a step

  during which the case has already been sensitive-

  ment moved in the direction of an arrow 75 and during which, consequently, the stop 8 of the support bar

  applied to the inner edge of the ring 4, and the ex-

  end 31 of the slider stop lever 10 is raised.

  This translates, between the anterior end 2a of the bro-

  che 2 sliders and the support bar 6, by an es-

  intermediate space through which the cursor can slide downwards, from the conical anterior end 2a of said spindle, as soon as this anterior end 2a has

  threaded said cursor over the outer edge of the ring.

  The configuration of the recess 57, to control the

  lisseau 11, makes sure that the spring 12 of

  slider lock is opened in a timely manner, by the

  nipple 13, so that the front cursor

  3a can slide down from the front end

  re from pin 2, without being subjected to an excessive extension

  sive. However, the lifting of the slider stop lever 10 also results in a lifting of the

  slider blocking lip 28, directly attached to this

  screw in accordance with Figure 3, so that a slider 3b can slide down. The fact that, after lifting said lever 10, the two studs 70 and 71 are also

* raised, the beak 27 for dissociating the sliders is also

  ment engaged through the slot 47 (FIG. 5) and comes to be placed in front of the rear face of the successive cursor, which prevents further advance of the cursors from the cursor reserve. Simultaneously, as already explained with reference to FIG. 2, the ramp 30 secured to the spout

  dissociation 27 printed, at cursor 3b previously li-

  béré, an additional push towards the extreme

  mite of the spindle 2 slider holders.

  FIG. 13 shows, finally, the position of the individual parts of the device according to the invention, at the end of the traction movement. We see that

  the cursor 3a is placed on the ring 4. The beak 28 of block

  slider ge applied in front of the slider reserve and prevents other sliders from sliding downward, because the beak 27 for dissociating the sliders has returned to its initial position. The successive slider 3b to be threaded could slide forward, on the anterior end of the slider-carrying spindle, as far as the stop lever 10, because the locking spring 12 is raised. Concomitantly with the soul-

  the device away from the ring, the tension spring 9 pulls the support strip 6 backwards, the

  slide 11 slides, in recess 57, to its posi-

  starting tion illustrated in FIG. 9, and the locking spring 12 can lock the slider 3b permanently on the front end 2a of the spindle 2 slider holders,

  as illustrated in figure 1. It can be seen that no

  is only printed on the clamping jaws 33 and 34,

  throughout the insertion process, that is to say that the cur-

  seur-type 36 remains enclosed and that, therefore, the distance

  between the blocking spout 28 and the dissociating spout

  tion 27 remains constant, in line with the width

cursor.

  The embodiment of the invention, described

  in this memo for the insertion of cursors confi-

  in C, can be modified in different details, including

  also lie for other forms of cursors, without deviating

  of the inventive idea exposed in the introduction.

  It goes without saying that many modifications can be made to the device described and shown,

  without departing from the scope of the invention.

Claims (22)

-R E V E N D I C A T I 0 N S-   1. Device for inserting sliders into the rings of spinning or twisting looms, comprising a housing which serves as a handle and to which is fixed a slider holder pin, intended to receive several sliders for threading, as well as a separating mechanism which individually presents the cursors to the ring, from said   spindle, device characterized in that said box   tier (1) includes a support bar (6) mounted slidingly   health, can be applied to the ring (4), and   nant a support edge (7) which rests on the upper face-   re of the ring during the entire insertion process, as well as a stop (8) which is applied to said ring, and determines the longitudinal position of the support bar (6).   2. Device according to claim 1, charac-   se by the fact that the stop (8) of the support bar (6) is made in the form of a trapped chin   the ring from behind, from the inside.   3. Device according to claim 1 or 2, ca-   characterized by the fact that the support bar (6) can   smooth with respect to the housing (1) by opposing the action of a force accumulator, preferably a spring tension (9).   4. Device according to any one of the claims.   cations 1 to 3, characterized in that the slider pin (2), preferably fixedly mounted on the housing (1), extends by its front end (2a) turned   towards the ring (4), to the area in front of the barret- support te (6).   5. Device according to any one of the claims.   cations 1 to 4, characterized in that a lever (10) for stopping the sliders, mounted to slide relative to the   support strip, is interposed between this support strip   pui (6) and the anterior end (2a) of the spindle (2) slider holders.   6. Device according to any one of the claims.   cations 1 to 5, characterized in that the slider stop lever (10) is slidably mounted depending on the   position of the support bar (6).   7. Device according to claim 5 or 6, ca-   characterized by the fact that the slider stop lever (10) is mounted on the housing (1), and can slide in   association with a slide (11).   8. Device according to any one of the claims.   cations 1 to 7, characterized in that a spring (12) for locking the sliders, removably retaining the front slider (3a), is associated with the front end (2a) of the slider (2).   9. Device according to claim 8, character-   laughed at by the fact that the spring (12) blocking the cur-   sors is fixed to the housing (1), and can be triggered by the relative movement of said housing (1) and the bar support (6).   10. Device according to claim 9, charac-   terrified by the fact that a stud (13) is disposed on the support bar (6), in order to trigger the spring (12) blocking the sliders.   11. Device according to any one of the res-   dications i to 10, characterized in that the spindle (2) cursor carriers form, at least in its anterior region,   an angle between 12 degrees and 30 degrees, preferably   this about 21 degrees with the horizontal determined by the support edge (7).   12. Device according to any one of the res-   dications 1 to 11, characterized in that the section   of the slider (2) slider holder is made with decreasing   progressive progress at its anterior end (2a), at least   in the region of the slider blocking spring (12).   13. Device according to any one of the res-   dications 1 to 12, characterized by the fact that a slider (28) for blocking the sliders, limiting the advance of said sliders, as well as a spout (27) for dissociating the sliders, separating the front slider from the rest of the reserve in sliders, are associated with the slider pin (2) in its anterior region.   14. Device according to any one of the res-   dications 1 to 13, characterized in that the spindle (2) has a recess (46) at its front end (2a), on the side facing the rear   (48) sliders, at least approximately until you see   sinage of the slider dissociation spout (27), so that the rear face (48) of said sliders rests on   said spindle (2), only by its two ends turning   born towards the bases (49) of these cursors.   15. Device according to any one of the res-   dications I to 14, characterized in that the spout (27)   of dissociation of the cursors is associated with the side of the bro-   che (2) slider holder on which the opening of the sliders is between the two bases (49) of said sliders, and is movable through a slot (47) formed in said   spindle, up to the area behind the posterior side lower of the previous cursor.   16. Device according to any one of the res-   dications 1 to 15, characterized in that the spout (27) for separating the sliders has, on the side facing the anterior end (2a) of the slider pin (2),   a ramp (30) made so that it prints, at the cur-   released by the locking spout (28), a thrust di-   rection of the anterior end of said pin.   17. Device according to any one of the res-   dications 1 to 16, characterized by the fact that the slider blocking spout (28) is slidably mounted relative to the slider dissociation spout (27), for adjustment the width of said sliders.   18. Device according to claim 17, charac-   terrified by the fact that the bearing surfaces of the slider (28) for locking the sliders and of the spout (27) for dissociating the sliders   are connected to two clamping jaws (33, 34) mutual-   opposite, between which a standard cursor (36) can   be stuck for width adjustment.   19. Device according to claim 18, charac-   terrified by the fact that the two clamping jaws (33, 34) can be pressed against each other by force a spring (35).   20. Device according to any one of the res-   dications 1 to 19, characterized in that the cursor stop lever (10) can slide out of the cursor support zone, by means of a slide (72 ') operable by hand.   21. Device according to claims 19 and 20,   characterized in that the slide (72 ') serves simultaneously   when opening the clamping jaws (33, 34).   22. Device according to claim 21, charac-   terrified by the fact that the slide (72 ') can slide in   different directions, for the actuation of the-   (10) to stop the sliders, and to open the half clamping shoes (33, 34).