BE555261A - - Google Patents

Description

       

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   The present invention relates to ma chines for straightening and twisting metallic wire supplied in rings and moving in the machine in the upstream-downstream direction.



   Its object is an automatic machine, with an extremely high efficiency ;, allowing during the same operating phase to unwind a round or profiled wire, straighten it and twist it. These results are obtained by virtue of the fact that it comprises, in combination with a reel for reel wire and a rotary mandrel carried by a traction carriage driven by a rectilinear translational movement on a fixed frame, a braking device of the wire in tension and in twist, placed after the reel to ensure the straightening

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 of the wire drawn by the mandrel and stop the upstream propagation, that is to say towards the reel, of the twist imparted to the wire by the rotary mandrel.



   Preferably, the machine further comprises all or part of the following characteristics: it is suitable for cutting into sections, of predetermined length, the straightened and twisted wire; the mandrel-holder carriage is combined with a drive device enabling it to be animated with an alternating longitudinal movement between a fixed upstream limit position and an adjustable downstream limit position and a shear is placed between the braking device of the wire in tension and in torsion and said upstream limit position of the carriage to cut the wire when said carriage reaches its downstream limit position the frame is formed of a series of transverse vertical brackets in the form of C carrying two raceways for the trolley,

  the opening of the brackets allowing the lateral evacuation of the bars' formed by the sections of straightened and twisted wire; a device for evacuating the upright and tor- sadéos sections or bars is provided transversely to the frame and this device comprises in combination:

   an endless conveyor whose upper strand moves transversely under the trajectory of the carriage to receive said bars after cutting off the wire and leaving them by the mandrel, a bar counter at the end of this strand, at the following this bar counter a bar receiving device capable of tilting, a mechanism for controlling the tilting s of this receiving device under the control of the bar counter, and a baling bench adapted to temporarily receive the bars released from the dis - positive receiver when it is tilted in order to

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 put the bundling in place;

   preferably, the machine is equipped for simultaneously straightening several wires in parallel, the carriage having as many mandrels as there are wires and the device for braking the wires in tension and in torsion being provided with as many elementary devices as there are wires.
 EMI3.1
 



  Other characteristics will emerge from the description which follows.



   In the appended drawing, given only by way of
 EMI3.2
 c ûescempla: Fig.l is a partial view in longitudinal elevation r d uae machine 'according to the invention intended to work simultaneously several son;
 EMI3.3
 the Frigos is a corresponding plan view the Figez is a transverse vertical sectional view along the line gis of F.ga Figl> 4 is an elevation view of the traction carriage carrying the mandrels for twisting the #rils and their driving motors; Fig. 5 is a corresponding plan view; the. Fig, 6 is an end view from the side of the mandrels: tl1S; Fig. 7 is a side view with partial cut away, of one of the mandrels, and a section of the shear
 EMI3.4
 Fig8 is a front view, along line 8 = 8 of Pig d 7, of the mandrel;

   Fig. 9 is a front view, downstream side, of the shears and its control device;
 EMI3.5
 the Fivs. 10 is a side view, in the longitudinal direction of the machine;
 EMI3.6
 3.ga.1 is a plan view, partial? and

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 with cut of this shears, on a scale larger than that of Figs. 9 and 10; FIGS. 12 and 13 are views in elevation and in plan, larger than those of FIGS. 1 and 2, of the device for braking the wires in tension and torsion;

   FIG, 14 shows, on a larger scale than in FIG. 3, the endless conveyor of the bar evacuation device, the bar counter, the oscillating device receiving the bars and the electro-mechanical devices combined with them;

   Fig. 15 is the diagram of the electro-mechanical devices and their circuits; Fig. 16 is a similar diagram but in which the various circuits have been shown separately, the contacts controlled by the relays having been separated for clarity from the corresponding actuating coils. the Fig.l? is a partial longitudinal elevational view of a machine improved by the addition of an accessory device making it possible to prevent the yarns from taking, during the twisting, a planetary rotational movement around the torsion axis;

   Fig.18 is a plan view of the carriage and of this support device; Fig.19 is an elevational view. a variant of this device; Fig. 20 is a cross section taken on line 20-20 of Fig. 19; Fig. 21 is an elevational view of a second variant of this device.

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 EMI5.1
 



  I, DESCRZP'0 T ïA T? ÇiC: 'DE' T.Ga. 1. '6 According to the exemplary embodiment shown, the machine is equipped to work simultaneously four metal X wires' 9.g19 2g 12, 13) steel or other metal or alloy of round or profiled section.



   It will be appreciated that the term "yarn" used throughout the specification does not imply any idea of fineness and the yarns processed in the machine can have relatively large diameters which can reach or even exceed one centimeter.
 EMI5.2
 



  We will first refer to Fig.1 to 5 diensemblea The machine rests on the ground by 3..nexm, edia. has a masonry foundation 1 which is provided with a bosco 8 and which carries an Ao frame adjacent to this pit This frame provides a longitudinal running path for a trolley
 EMI5.3
 B mandrel-holder for pulling and twisting the wires X, This cart B is secured to a device 0 which allows luanî. back and forth along frame A between
 EMI5.4
 a fixed limit position upstream (on the left in Figs P. and 2) and an adjustable downstream limit position (on the right).
 EMI5.5
 



  The wires X are supplied by an ignition device D at the upstream end of the machine between this feed device D and the upstream limit position of the carriage are placed from upstream to downstream; on the one hand a device E for braking the wires X in traction and torsion, intended to slow down the movement
 EMI5.6
 wires downstream under the action of the mandrels carried by the carriage B and to stop the progression upstream, that is to say towards the feed device D of the treQB communicated by said rotary mandrels to the strands unwound from the threads' X; and, on the other hand, a shear F intended to cut the wires into straightened and twisted Y bars.

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   Finally, the machine is completed by a lateral device G intended to receive and Y bars, to count them and to facilitate their bunching of Z bundles; and a set H of electromechanical means (Fig. 14 and 15) for controlling and controlling the machine so that it is automatic, at least as regards the traction on the wires, heavy twisting and their cutting.



   As will be understood, the overall operation of the machine is simple. When the carriage B reaches its upstream limit point, the mandrels carried by this carriage grip the downstream ends of the wires at the level of the shear F, then the carriage moving downstream (to the right in Fig. 1) the mandrels drive the wires X while twisting them., while these wires are straightened and braked by the device E which stops the propagation of the twist towards the power supply device D. When the carriage B arrives at its downstream limit point, the mandrels open, while the shear F cuts the straight and twisted strands.

   The bars fall on the device G which counts them and facilitates their bundling, while the carriage B returns empty towards its upstream limit point and so on.



   This being said, each of the subsets A to H above will be taken up in detail.



    BATI A (Fig. 1 to 3). This frame carried by the foundations 1 next to the pit 2 comprises a certain number of transverse beams 3 made of concrete or the like. On each @ontrine is fixed vertically a bracket 4 in the form of 0 (Fig.3) leaving with the sill 3 a lateral passage 5 for the transverse evacuation of the bars (braided and twisted.

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 EMI7.1
 



  These brackets 4 support two rails 1on gitu tï, inaux 6 (Fig. 1 to 6) which form a track on which the mobile carriage B rolls and which guide it both horizontally and vertically * The brackets 4 also carry to a higher level to that of rails 6 upstream and downstream two auxiliary rails 7
 EMI7.2
 and 8 which carry four contactors I, II, III, IVe intended to achieve the automaticity of the various interlocking and stopping of the machine, as will be described later ;,
These contactors I to IV are adjustable in position along rails 7 and 8,
Finally, to the upper transverse branches
 EMI7.3
 jib cranes are attached to trolleys 9 (luig, 3), b) cHt # Iar MOBILE B (Fig.l to 6) ..

   It comprises a rigid foetullic frame 10, reinforced in its four angles by yokes 12.



   Each of them carries on the outside of its core 13 (Fig. 5) the bearing
 EMI7.4
 1 for the vertical axis 7.5 of two rollers 16 intended to roll on the fields of the wings of the rails of U-section, 6; and between their two flanges, the bearing 17
 EMI7.5
 (Fig84) for the horizontal axle 18 carrying a vertical roller 19 intended to roll in the U 6,
Carriage B carries sideways and on top
 EMI7.6
 a cam 20, intended to actuate the contactors I to ive carried (Fig.l) by the rails 7 and 8.



   The carriage also carries two electric motors 21 in two directions of operation supplied with current by a set of sockets 22 carried by the intermediary.
 EMI7.7
 d Ul1 support 23 by the carriage and intended to come into contact from the back; f! j.rd. '' 3 84 with the conductors 9 (Fig.s).

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  The shaft 25 of each of these motors is connected by one or the other of two sheaves 26, 27 and belt 28 or 26a, 27a, 28a, to one or the other of two shafts 29. The carriage therefore carries four shafts 29. These are parallel, arranged in the longitudinal direction of the machine and they journal in bearings 30 fixed under the carriage.



   Each shaft 29 port at its upstream end a mandrel designated as a whole by the references 31.



   The mandrels are of a conventional type with three jaws 32 (Fig.7,8) with a clamping surface 33 eccentric to the articulation axis 34. These jaws are articulated on axes 34, carried by a disc 35. The latter can turn. in an outer ring 36 which is integral with the drive shaft 29 and which carries lugs 37 engaged in radial slots or buttonholes 38 of the jaws.



   When starting, the closing of the jaws 32 is produced automatically by the combined Laotian of the acceleration imparted to the crown 36 and the inertia of the disc 35 carrying the articulation pins 34.



   This action triggers a relative movement of the central disc 35 with respect to the crown 36 in the direction indicated by arrows f1 and f2 (Fig.8), the direction of rotation of shaft 29 then being that indicated by arrow f2.



   The centrifugal force then exerted progressively on the jaws 32 acts in the same direction and the two actions concur to bring the clamping faces 33 of the jaws into contact with the wire X to be clamped.



   At this moment, the resistive torque exerted by the latter adds its action in the direction of tightening.



   A sudden reversal of the direction of rotation do

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   1 control shaft 29 for each mandrel by reversing the direction of supply to the motors 21 causes, conversely, the loosening of the jaws 32, o) CONTROL DEVICE C OF THE TROLLEY B (Fig.l and 2).



  This device comprises a winch 39 driven by an electric mo their -40 via a reduction gear 41.



   The pulley of the winch 39 drives a cable 42, one end of which is fixed to the carriage B by a coupling 43 (Fig. 2 and 5). The other end of the cable passes over a return pulley 45 (Fig. 1, 2) and is hitched to the upstream end of the carriage B by a fastener 46. d) WIRE FEEDER 1 (Fig .1-2).

   It comprises rotary reels with vertical axes 47 on which are mounted idlers back spools 48 carrying the wire to be straightened and twisted, return pulleys 49 and fixed guides 50. e) WIRE BRAKING DEVICE: IN TRACTION AND IN ROTATION (Fig. 1,2, 12, 13) In order to obtain straight bars and avoid whipping of the wires during twisting, it is necessary to apply an adjustable tension to them during this operation.



   Furthermore, in order to be able to twist the wire continuously during the traotion, it is necessary to brake it constantly in rotation at a determined point, so as to prevent the twist from being transmitted upward to the reel. These results are given by co-device E.



   SI comprises for each wire three grooved pulleys 51, 52, 53 over which passes the wire X coming from the reel and forming a loop at least around the downstream pulley 53. The upstream pulleys 51 and the downstream pulleys 53

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 are keyed on two arbros 54 and 55 journaling in back fixed bearings 56, 57.



   On the other hand, the central pulleys 52 are mounted on a shaft 58 carried by two arms 59 which are
 EMI10.1
 articulated on the shaft 53 and which peri.¯.3attent to raise oen pulleys in 5ûa (Flg 13) using a jack 60 to facilitate the engagement of the wires X.



   The shafts 54, 58, 55 of the three groups of pulleys are interconnected by a gear train 61 and the latter is connected by a transmission 62 to the rotor 63 of a dynamo 64 which delivers on resistors 65 a adjustable current using an excitation rheostat 66
 EMI10.2
 (Fit} .13)
By adjusting this excitation, the resistive torque of the dynamo and consequently the braking applied to the pulleys and by them to the wires X
 EMI10.3
 to slow down their longitudinal movement.



  In addition, the braking of the rotating wires
 EMI10.4
 is obtained by the substantially squared elbow or elbows formed by these threads in their winding on the hens.
 EMI10.5
 Experience has shown that this or these elbows c, rpôw completely singing the transmission of torsion to the reel.



     Immediately downstream of device E, the guides
 EMI10.6
 of the 67 {'ig.l 2) direct the wires X towards the shears F.



  : ':) Shear F (Fig.l, 2 ot 9 to 11). It will be recalled that chain shears are intended to cut the yarns X twisted on Lcvrres Y twelve certain length. This shears is of the guillotine type and has four do coupo stations, c'ost- s-diro one for wire X. It rests on the foundations of the machine, and co -.-, -, carries a support 68 forming part of the

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 EMI11.1
 l <.: t1. and carrying two GO longitudinal rails which force C1 rolling track. for the shears This one forms a frame z0 mobile along said path thanks to \ <¯L.: 1'0 support rollers 71 j fixed at the ends of deu :: .. '.. ï: ic: f. 72 each turning in their bearings 72a of the chus-OXo 70.
 EMI11.2
 



  The latter carries a multiple cutting device
 EMI11.3
 composed of a fixed frame 75 {, carrying guides 74 and fixed cutting rings 75 (Figoll) and a movable slide 76 carrying cutting rings 77 o The slide? .uobilc 76 is guido and the rings 77 are kept in contact , fixed rings 75 by fixed bearings 78p
 EMI11.4
 to the fixed frame 73 and provided with a metal insert 79
 EMI11.5
 az'z'L .: 'i c'. i iz2
 EMI11.6
 In the rest position the cutting rings
 EMI11.7
 75 ot 77 are coaxial with guides 74 and leave; 34.ae .b: emen the wires H pulled by the carriage B.



  When the course of the latter rs downstream is
 EMI11.8
 completed, a device described below triggers a
 EMI11.9
 Back and forth movement of the slider 76 * The movable rings 77y by moving in the direction of the arrow f3 (ïisa9, H) cut the wires X.



  The outward and return movement of the slide 76 is ensured by a double-acting hydraulic or pneumatic cylinder, this slide being connected by an articulation 80 to the piston rod 8.9 integral with the piston 8J., Movable in the cylinder 83 of the cylinder, , This cylinder 83 is: ': î, :: 0 on the frame 70 by an axis 84- and liJ: 13nt in fluid .yens pressure by a pump 85 driven by a uotour êlcct.n.qe.: H3 80 sucking in 87 and driving back through a, :: '-' 301.1 ',; -. 1).) "\'; O '..: r} r #: nnati .-: .. no 88 towards the cylinder I distribute it - '01. <:> '1 have y.?.ur6o by a distributor 89 which read drawer fJ 1t to de us: rc>;

   = .i o. is solicited towards the moon or wrongly

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 by a return spring 91 or by an electro 93, the power supply of which will be specified later, In the rest position of the shears, the distributor is in the position shown as return by the spring 91 and the jack J ost to the admission by its right end and
 EMI12.1
 to the left exhaust. The excitation of the electro 92 @ssurers the reversal of the feed, by bringing the drawer 90 in the position shown in dotted lines and the slide 76 will be moved to the right to shear the wires.



   Finally, it will be noted that the whole of the shears?
 EMI12.2
 1., olk) island on the frame? in the longitudinal sound, on the rolling columns 69 is oons'bâ'iBmeRt solicited in the upstream ¯ downstream ssns by a 9S counterweight {3Fig 10) suspended from a loop 94 which passes over a pulley 95 posted 1> '\ 1 'the frame and is fixed at 96 to the frame 70 of the shear F. The counterweight recalls the frame 70 against soft ends 93a placed on 10 frame A (Fig.10).



  This shears can be pushed backwards) against the action of the Oontr3poids Ose under the action of the carriage B moving Tors upstream.



  In co abut the carriage B ost pO'l1.ri, '11, on the upstream face, Fig. 4 and 6, of two thrust tampc.n3 97, intended to abut against the downstream transverse f5 of the chassis 69 do the shears ,. By t "il1 (, t11.'s, the clamping is such that, short of the upstream end of travel position of the carriage B, the shear F is pushed back towards
 EMI12.3
 upstream of a length a (rig '?) such that the downstream exbrep-ities. ±. X wires adjoining the end reels which were, before the retraction of the shears, in the
 EMI12.4
 plane KK bare flush with the downstream faces 98 of the fixed rings 75, are located at the end of the retreat upstream of the quail,

     

 <Desc / Clms Page number 13>

 
 EMI13.1
 still in the KOK plane but in contact with the face 99 of the solid bottoms of the crowns 35 of the SI mandrels so that the d2extr6mi- -bd portions of the wires are fully enë'-sees in said mandrels g)!}! SPOSJ: ri! 'J: E1' GD ETA QUOTATION OF BARS DRESSED AND SOLD OUT (Figol at 3 and 2 p.m. This device, intended for pe = 'l1: â't!' e 1? lateral evacuation of bars in the direction 4¯ys la .ü91..4l.lfE.bil x4 * (Fig423) takes advantage of the V-shape dcssptenoea 4, 9 oestà'-dipe their openings 5.



  It comprises a series of conveyor ehfiîins us end 100 with chin 101 spaced apart from each other at a length ± (3? Lgel4) 'corresponding to 8.'t,' 'E3: ¯ :: 4' tz: ; nsersc: L (FigS) of you X in the machine of: ...:. cJ, c sor-te that these chains can reoToir2 after ߯¯. ,,. gs actuation of the shear Wp four bars Y -iVure five successive ln3eeJ (Fig 14) a These chains 100 are entl "ainê # of a movement '.;:. :: 5,! 1u giving the sounds of .. the arrow î'4- by a group u-ofco * 2Ë-dllût - u: v Ion Crig.i, 2) At the right of the endsp on the output side of the strands. ',: \??

   then below a barbs receiving device o This is mounted tilting around a horizontal axis ,,,, L .l longitudinal 105 (Fig.14) to allow èi.é'17'erso:!; ' 'The bars on an inclined plane 106 adapted lui-ïno! for - !. '3Pour the Y bars in a bench of bottelago 107 tFigo5j mante oscillate, around a longitudinal horizontal axis .3 on a pocket 109, intended to receive bo't, * Ij - o 2,' do. bars to bring them by rolling lut t,, B rails Xl;). 01.:3 pit 2 to the right of an overhead crane '3 .:' d9 evacuation The tilting s of the boot bench J07;: 1t provided by jacks 111 (Fige3) doors by 1 ('\ po'; 1J 109 and these jacks are manually controlled by

 <Desc / Clms Page number 14>

 
 EMI14.1
 1 worker who performs lun liaturus bo'tc-ilv-ge.



  On the other hand, the tiltings of the bar receiving device 104 around its axis 105 are automatically controlled by the bar counter 3.03 so that this device 104 switches when it has received a number.
 EMI14.2
 of Y bars corresponding to the desired one for a boot 2. Fig.1-1 shows an example of control.



   The receiving device 104 is linked by the rod
 EMI14.3
 112 to the piston 113 of a double-acting, fixed cylinder L cylinder 116 supplied with compressed fluid arriving through a duct 115 via a distributor 116
 EMI14.4
 with slide 117 subjected to the antagonistic actions of the spring 110 and of an electro-magnet 119 In the reception position; bars, the drawer is in 10 position with solid lines under the action of the spring They and the fluid under,
 EMI14.5
 pressure is ndmis in the left chamber of the Le-actuator while the right chamber is at 1 exhaust in 120.

   The excitation of the electro 113 will bring the spool 117 d;, ',! 1s the dotted position and llcliriicn- tion of the jack, causing the ljassulomont du. device 101 in the direction of arrow f6 and this under the control of bar counter 103.



   . This one is, in fact, constituted by a star
 EMI14.6
 rotary, secured by its ù .: x: e 121 of another contact star 122 which, each time a bar 7 passes through the bar counter, advances by one branch and closes a contact 123 in the open. this is arranged strolling the circuit 124
 EMI14.7
 for supplying an electric motor 135 connected by co circuit to the terminals of a current source 125, On 03 circuit is arranged in series with the contact 123 a conventional eloc¯ tro-breaker 127 do so that the motor does not receive short q'una. impulse at each fettre-

 <Desc / Clms Page number 15>

 
 EMI15.1
 contactor 123 oe is to say each time a Y bar activates the bar counter 103.

   The motor 125 is connected by an appropriate reduction 128 to a
 EMI15.2
 cam 129 intended to act in the direction: of the closing and against an antagonist spring 130 on In p11 '"lotte of a switch 131, arranged in the circuit 132 1.L connects to the source 126 1élootro 11g .



  Drug. 139 and link 128 are t, el: l.as that this electro is powered, spawning a short time when the '* bars count has received a number of rotations lem011'!: I () i "" res, each caused by the passage of a bar? equal to the number of bars desired for. a botte0 The device 104 tilts and directs them by the inclined plane 106 towards the bottelago bench 107,
 EMI15.3
 h) 35EBOTRO-1 #! OftMIQPES H! PE CONTROLE AND DB 001 DEVICES, ET.NLIE, On. will refer to nux 1! 'ig $ 15 and 16.



  LR Fig. 15 represents the set of connections and mechanical links, however, in Figol6
 EMI15.4
 represents j side by side ,, the various circuits according to mC1.intont ". nt cOràl1J.unÚY <1ont [[dmis ot in which the various contacts controlled by relays are separated from the windings of these relays and purely and simply placed in the circuits which they control.



   We will note in. furthermore, that the relays are designated in these figures and in the remainder of the description
 EMI15.5
 by the large letters M, N ..... oR, S, while their contacts are designated by the corresponding small letters assigned with the exponents 1,2, ... Ctost as well as the relay 1V1 will include the contacts m1, M2o *** çl; the windings of the relays will, on the other hand, be designated by the following standard in the references.

 <Desc / Clms Page number 16>

 



     Once this has been done, the assembly is connected to terminals 133 and 134 of a source of direct current and the various
 EMI16.1
 rents elementary circuits closing on two 135 el56 conductors: a 1 ± 7 switch provides general control.



  On the F3. g. . we find: the shear F with 3.gx, ortro 92 to actuate the distributor 89 of the shear the torsion motors 31 carried by the carriage B and driving the mandrels 31; the motor 40 of the drive mechanism 0 of the carriage B;
 EMI16.2
 the four contactors IeII3 III and IV carried by the jib cranes of the frame and aotioned when passing by the cama 20 carried by the carriage;
 EMI16.3
 and the six relays. 1M, N .... RS with all their contacts, '
In Fig. 16 we find the same elements
 EMI16.4
 with the exception of the shears, only é3.srro 92 related. with this shear being represented *
In addition, on Cotte Figure, the circuits have been clearly separated:

   on the left are the circuits of
 EMI16.5
 control, and on the right the back motor power supply circuits.



   We will successively describe all these circuits which at rest have their contacts in the positions shown
The electro 92 of the shears is connected to the network by 1 * via either a push button 138 to
 EMI16.6
 automatic opening under 1 action of a spring 139 or of contact 1-4,0 of contactor III.



  The coil 11 of relays M is connected to the network through the switch 137.

 <Desc / Clms Page number 17>

 



    Gallo 142 of relay S is connected to the network
 EMI17.1
 on the one hand, by the contact r, 2 du'relais R and on the other hand by the contact "* 141a of the contaoteur III" ot the conta o.



  \ if of relay L44 Coil 143 of relay R is connected to the. 1 '"bucket on the one hand, by the contacts3- and on the other hand either by the contact 1'1 ,,' the oontl'1! Cterir II and the contact m2 or by the contact 144 of the contactor I.



  Ln coil 145 of relay-N is connected to the network on the one hand, by the Oz contact and on the other hand, either by Io oontaot nI for maintaining relay N and the cojxbaot 146 of contact IV or by contact 147 of contactor I.



     :! Its coil 148 of relay 0 is connected to the reed on the one hand, by contact n2 and on the other hand, by the
 EMI17.2
 contacts Ni or 01 and either; Contact 149 of contactor 1 has contact 150 of contactor IV.



  Coil 151 of relay D is connected to the rescu dthere, by contact ql and, on the other hand, the contacts us or 03 $ Finally, 1. coil 152 of relay Q is connected to the network by one of the contacts pl or qa and-lnn of the necks. tacts n3 or 03e
The motors 12 are connected to the reed for one direction of operation by the closing of the contacts r3 and r4 and for the other direction by the closing of the contacts s2 and s3.



   Finally, the motor 40 is connected to the network; for the direction of travel corresponding to the movement of trolley B upstream: by the m3 contacts,
 EMI17.3
 04 and ;, through a starting resistance 153 by lOi> contacts 05 and m4, the resistance then being eliminated by the suocossive closing of the contacts p2 then 'q3 (ru. Lais 01-trOnométri que);

 <Desc / Clms Page number 18>

 for the other direction on the one hand, by closing the contacts m4 and n5; on the other hand, by the closing of the contacts m3 and n4 and the starting resistance 153 then eliminated by the successive closing of the contacts p2 then q3.



   II-GENERAL OPERATION OF THE MACHINE
The carriage B is stationary in an intermediate position of its travel, for example in B1 (Fig.l.



   The crowns 48 of wire being placed on the reels 47, the end of each wire X is introduced into the guide 50, then into the grooves of the pulleys 51 and 53, the pulleys 52 being raised at 52a (Fig. 1.12) by the pneumatic cylinder 60 controlled by a hand valve,
The wires X are then engaged in the grooves of the pulleys 52, in the guides 67 and in those 74 of the shear F, the ends of the wires protruding by a certain amount downstream with respect to the rings 75,
The pulleys 52 are then returned to the active lower position using the jack 60.



   The shears are then actuated manually, to equalize the ends of the back yarns X, by pressing the push button 138; in fact, the cooked air of the electro 92 is thus closed, which moves in 90a (Fig. 9) the spool of the distributor 89 thus admitting the pressurized fluid on the left face of the piston 82 controlling the movable slide. 76, which moves to the right in the direction of arrow f3 and cuts the threads. As soon as you stop acting on the push button 138, its spring 91 returns the drawer 90 to its starting position and therefore also the slide 76.



   The wires are then flush with their ends with the downstream faces 98 (Fig. 7) of the rings 75 of the shears,

 <Desc / Clms Page number 19>

 these faces are then in the KK plane, because the shear F is maintained in its downstream limit position by the counter * weight 93 (Fig.10) the carriage being separated, in B1 (Fig, l) of this shear.



   The carriage B is then started in the direction of the shears, that is to say downstream. upstream $ by closing switch 137.



   In fact, the closing of this switch closes the circuit of the coil 141 of the relay M, which closes the contacts m1 to m4. The closure. of contact ml closes the circuit of coil 148 of relay 0 which in turn closes contacts c1, c3, o4 and o5 and opens contact o2.



   Closing contact m2 removes the locking of the circuits of coils 142 and 143 of relays S and R.



   Closing the m3 and m4 contacts removes the blocking of the motor circuit 40.



   The closing of contact o1 forms the holding circuit of relay 0.



   The opening of contact o2 locks relay N '.



   The closing of the contacts o4 and o5 forms the supply circuit of the motor 40 through the starting resistor 153.



   This motor therefore starts and drives the carriage B upstream.



   The closing of the contact o3 closes the circuit of the relay P which in turn closes the contact p1 of the relay and the contact p2 which bypasses part of the starting resistor 153.



   The energization of relay Q controls the closing of contact q2 of the holding circuit of this relay and of contact q3 which bypasses the entire resistance of

 <Desc / Clms Page number 20>

 
 EMI20.1
 of <4rrae. Simultaneously, this relay opens the contact (it which cuts the circuit of the relay P whose action on the starting resistance entirely shunted slowly now unnecessary.
 EMI20.2
 



  The carriage D has thus reached its nos1 male speed of translation.
 EMI20.3
 A little before the end of its course towards 1 'mOl ": the' carriage B comes back from a (Fig.7) by 1 encloses, dihedral of its buffers 97, the shears F. The threads X,
 EMI20.4
 engaged in this shears and remaining fixed in items- because, therefore penetrate into the auto mandrels 31, When the ends t> of the wires are completely engaged in these mandrels, the cam 20 of the carriage engages
 EMI20.5
 the limit switch 1. whose closing simultaneously commands the starting of the twisting motors 21 and the reversal of the direction of movement of the carriage B.



  In fact, the operation of this limit switch 1 cuts off the power supply circuit; the Or! Cu relay closes the N relay limit circuit, closes the power supply circuit: the R relay is closed.



  Switching off relay 0 cuts off the assembly of motor 40.



   Closing the N shill circuit closed the
 EMI20.6
 coutncts n4 and n which cause the motor 40 to start in reverse sounds under the same conditions as the start of inverso sounds, contacts 81, ¯2 o3 playing 10 mima as well as contacts Q2 and 03.



  Carriage B begins to move downstream. ; uc.nt when the relay circuit closes And it ensures:
 EMI20.7
 the closing of the co-relay holding contact ri,

 <Desc / Clms Page number 21>

   cover of contact r2 which locks the circuit of relay S and the closing of contacts r3 and r4 which close the supply circuit of the torsion motors 21 which start
Cos motors 21 rotate the -
 EMI21.1
 self-clamping mandrels 31 which causes the eccentric jaws 32 to be tightened as indicated above a Goux therefore seize the wires X and twist them while the carriage B pulls them towards 1 '(} vCll ...' Lo friction of the son in their passage on los pulleys 51, 52 and 53 rotates the latter and the shaft 55 which drives the rotor of the dynamo 63,

     The latter delivering on the resistor 65 a current regulated by the rheostat 66 (Fig. 13) brakes the pulleys and thus exerts a retention on the wires X pulled by the carriage,
 EMI21.2
 cc which allows the bars to be perfectly deregulated and prevents their whipping during rotation.



     At a desired moment the cam 20 of the carriage closes
 EMI21.3
 the contactor II which cuts the current on the torsion motors 21, its position being adjusted to obtain the total number of turns corresponding to the desired twist pitch.



   In fact, closing this controller II cuts
 EMI21.4
 eg the relay circuit R which in turn opens contacts r1, r3, ru and forms contact r. Contacts r3 and r thus cut off the motor supply circuit.
 EMI21.5
 If twisting while opening contact 1'1 cuts the holding circuit of relay R. Finally, the ure format of contact r2 unlocks the circuit of relay S.



   However, carriage B continuing its course
 EMI21.6
 - / ors downstream, its cam 8 attacks shortly after switch Iii.



  This causes the closure of the circuit of the .'c ,, rîs S and the circuit of the electro 92 of the shears.

 <Desc / Clms Page number 22>

      



   The relay S closes the contacts s2 and s3 which supply the torsion motors 21 in the opposite direction, but since the duration of the closing of the relay S is limited to that of the passage of the cam 20 on the contactor III, the only result is a short rotation of the SI motors just enough to abruptly slow down the throwing of the self-clamping handles 31 and reverse their direction of travel for a short time, however sufficient to obtain the opening of the jaws and the abandonment of the wires *
Simultaneously the excitation of the electro 92 beyond the shears ensures the automatic operation of Y, which falls which cuts the wires X, The twisted bars / onto the conveyor chains 100 which bring them to the bar counter 105.



   A very short instant later, the cama 20 of the carriage B reaches the limit switch IV. The latter cuts here the circuit of relay N controlling, retort described above, the operation of the winch and closes the circuit of relay 0.



     This causes the reversal of the marcho of the motor 40 and of the winch by the action of the contacts b4 and b5 and that of the consecutive contacts p2 and q3 under the conditions described at the start of the cycle with the contact of the limit switch IV acting. same role as contact m1.



   The carriage B starts again in the direction of the multiple shears F and the automation cycle is thus closed and will be repeated indefinitely until the current Bora is not manually cut by opening switch 137,
The number of bars discharged into the receiving device 104 is controlled by the counter 105. When the predetermined number of bars is reached, the distributor 116 (Fig. 14) causes the ram to move back and forth.

 <Desc / Clms Page number 23>

 
 EMI23.1
 pneumatic L oscillating control of the device 104.



   The Y bars, in number provided, are then discharged into the baling bench 107, from where, after
 EMI23.2
 c. ,, manual ru-jon ligatures, they are evacuated in the form of bundles Z of a determined weight, in the bar pocket 109, under the action of the pneumatic jacks 111 ;, controlled manually using a valve by hand. when the bar pocket 109 is full,
 EMI23.3
 it is moved in 109 on the rails 110s for l6VQ- cUÇ: i;: lol1 of the boots by the overhead crane 110a.



  III-s # i] P # L. # SXEMMES¯S¯FI & l¯A31 Preferably, the machine to be described will be completed with one of the devices described in Fig. 1.7 z3 or Z9 go or 21 with Effects / the above-described machine, in certain Ions and, in particular, if any of the X yarns (Fig. 17) presents an irregularity resulting in a very slight unbalance, this unbalance or any other cause, such as accidental lateral vibration, could be sufficient for the centrifugal force developed due to the rotation of the wire around its longitudinal axis ZZ
 EMI23.4
 (Fig. 17) brings this wire to incunve outside this axis, which its possibilities of elastic elongation allow it.

   However, if this wire began to move away from the axis of traction, the centrifugal force would therefore be of interest
 EMI23.5
 the large mass j, of the whole of this wire and the; the phenomenon of curvature would be accentuated very quickly. The wire, in a few moments, would turn around the ZZ axis, generating a geometrical envelope whose generator
 EMI23.6
 is represented for example by the line mi:.:!? e T.

   Each cross section of wire X described a movement

 <Desc / Clms Page number 24>

 
 EMI24.1
 planetary around 11Qxe ZZ and, soon, the phenomenon would accentuate to the point that under the effect of the repeated bending which would occur near the point of attachment in the rotating mandrel, the wire could break in the vicinity of the latter, these alternating flexions being produced by the difference in rotational speeds, on the one hand, of the torsion and, on the other hand.

   planetary motion,
This drawback can be radically eliminated by providing the mandrel-carrying carriage B with an or-
 EMI24.2
 C-3iû mobile support, recalled by an elastic device against a stop of the carriage, in a rest position,. For which it is arranged a short distance in front of the point of attachment of each wire to the mandrel, at the
 EMI24.3
 vre -Immediate machining of this supposedly ideal straight wire e. - @ its two fixing points.



   Thanks to this arrangement, as soon as the wire tends to take an arched shape, it comes into contact with this ¯, one that it tends to push back against the device.
 EMI24.4
 CL 2.0 tick and Inexperience shows that, thanks to the opposition #Ji. -roée to eccentric movement by this moving organece. 'which ceases immediately and the wire resumes its pl'l; l.1ière straightness.



  In the event that the carriage carries several
 EMI24.5
 r.ùârins intended to twist in parallel several threads as in the first example, the resilient support member is, preferably, constituted by a strip 'Loran - vo2- sale 160 disposed just above the layer of threads .



   In the example of Figs. 17 and 18, this recipe is placed on top of the layer of yarns X where it is
 EMI24.6
 carried by dour levers 161, pinned on a shaft 152 mounted oscillating in two arms 163, rigidly fixed on the extremity.

 <Desc / Clms Page number 25>

 moth of frame 10 of carriage B.

   A spring 164 folding one of the levers 161 to the corresponding arm 163 tends to cause the two levers 161 and the slide 160 to oscillate downwards, in the direction of its arrow f11, the tilting is limited by two conjugate stops 165 and 166 carried respectively by one of the levers 161 and by a ¯ferrure 167 fixed using the arms 163; the-, rest position of the slide, determined by the stops, is such. that this ruler is placed just above the upper progenitors of the X sons, rigorously suppose @ectillines a few millimeters from them;

  , such that it is ready to touch any of these threads as soon as it deviates from its straight position.



   On the shaft 162 is keyed a crank 168 carrying, at its end, a roller 169 intended to roll against the lower surface of a cam 170 constituted by a longitudinal bar fixed to the bêti A, It comprises a downstream access re @@ pe 171, then a lower horizontal rolling surface 172. It is arranged in such a hold that when the carriage B approaches the.

   shears the roller 169 rolls under the ramp 171, which causes an upward tilting of the levers 161 and a lifting of the slide 160, which assume positions such as those shown on 160a and 161a on the. left of Fig. 17 and which correspond to the limit position occupied by the device when the carriage B finishes its upstream stroke to allow the mandrel 31 to come and seize, at the exit of the shears F, the wires to be driven downstream and twisted.



   The cam 170 is arranged in height so that the slide 160 is sufficiently raised so that it can pass freely over the. shear F, at the

 <Desc / Clms Page number 26>

 
 EMI26.1
 end of the upstream travel of the carriage and the start of its active downstream travel.



  The strip 160 does not return to the ir6-- dicht neighborhood of the X wires until after the roller 160 has left the former "- ':: 1'0': the downstream unit of the ramp 171, but this is sufficient to happen. :. '.:. k; r¯.É; ent trot so that the lengths of wire already drawn on the mandrels are short enough so that 1.-3 wires X do not yet deny the slightest tendency to arch.



  In the continuation of the race downstream of the oh3- .1 -. do any of the threads tend to deviate? ' of. x '3, it comes immediately to contact say the slider> i is pushed upwards, against:. spring return ion 164 and the pressure 61çs- "i ### -, exerted by this strip on the choking wire ¯..c '.: l <.T'¯'L, 3 its birth, the disturbing movement .



  In Fige-1.9 and PO we have shown a variant 1, which the strip 160 instead of being carried by 1..5t: i, lbl .. :: oscillating is fixed on two vertical rods es /.;, Mounted sliding in a guide 173 fixed on the ..: ot 3 and joined by three crossbars: one lower 17. j-oi.jinc do the strip, the other 175 located above the ... uui - '. e 173 to form with it the determining stop j.¯. f, 3j 1Iio low rest of the strip and the third 175 bringing together the upper ends of the rods.



  The whole of 1 mobile crew 160-172-174-175-176 is recalled to the bottom by two coil springs 177,] o5s between the guide 173 and the iniérieur cross 174.



  The assembly is such that, under the action of the cavity and the springs 177, the. crosspiece 175 resting on the guide 173, the strip 160 is located just above the upper generatrices of the X wires supposed to reotili-

 <Desc / Clms Page number 27>

   gnosis in such a way that as soon as one of these fila tends to deviate from the straight line, it will encounter this ruler which elestically opposes its lateral displacement and stifles any tendency of this thread to tackle more .



   To erase the strip 160 when it must pass through the shears F, two rollers 178 are provided at the two ends of the upper cross member 176 intended to roll on the upper face of a fixed cam 179, the end of which is downstream comprises a ramp 180 ascending from downstream to upstream and intended to cause the slider to pass from the active position 160 to the erased position 160a located at a level higher than that of the shear F,

   the ramp 180 being followed upstream by a horizontal surface 181 intended to hold the strip in the. position 160a up to the upstream dead center of carriage B.



     Fig. 21 shows a second variant similar to that of Figs. 17 and 18 in that the strip 160 is carried by two levers 161, integral with the axis 162, rotatably mounted on the arm 163, but its tilting upwards against the return spring 164 is ensured. with the aid of an electromagnet 183 carried by the carriage B and attracting, when it is excited, a core 183 carried by the upper end of the crank 168 secured, in their oscillations, to the two arms 161 .



   The excitation circuit of the coil 182 is provided by the combination of a brush 184 carried by the carriage and a trolley 185 fixed on the frame of the machine from which it is electrically isolated, and Se in a position such that the 'electromagnet 182 is supplied as soon as the carriage B, approaching the shear F, the strip 160

 <Desc / Clms Page number 28>

 must be erased in its high position 160a, the latter being maintained up to the position shown in phantom, stopping the carriage at its upstream dead center.



   Of course, the invention is not limited to the embodiments shown and described which have been given only as examples *
It is obvious in particular that the device for braking the wires instead of being electric could be any other, and in particular hydraulic or mechanical.
 EMI28.1
 



  Claims
1.- Machine for straightening and twisting round or profiled wire supplied in crowns, said machine being characterized in that it comprises, in combination with a reel (D) for the wire (X) in reel and a rotating mandrel (31) carried by a traction carriage (B) driven by a rectilinear translational movement on a fixed frame (A), a device (E) for braking the wire (X) in traction and in torsion, placed after the reel (D) to ensure the straightening of the wire (X) pulled by the mandrel (SI) and to stop the upstream propagation, that is to say towards the reel (D), of the twist communicated to the wire (X) by said rotary chuck (SI).



   2.- Machine according to claim 1, characterized in that said device (E) for braking the wire (X) in traction and in rotation consists of a group of at least two pulleys (51,53) juxtaposed. and with parallel axes, between which this wire (X) passes while winding in an arc on the: downstream pulley (53), at least one of these pulleys being combined with a brake (64).


    

Claims (1)

EMI28.2 3 ¯ Kachine according to Claim 2, characterized in that the device (E) for braking the wire (X) <Desc / Clms Page number 29> EMI29.1 en tï? ôôt ± @ ïî ê't sn rotfit: tmt (j iîI};} Oê t1! Óis ï '(JUlt @ 8 (61, 55) â focused parallels fies d @ U & vôùl1 tjJm (lg3) being with axes tissas, tgA1 $ 10 19 pealid * întenaédiaif 9 (5) is pdjtt6â pay t # support () ü1 n1J ô: 1111it around an axis (55) parallel âtt% / ltts t ±% e 11% /! JIJ / ! Jt sol licit by a device 0) qut t 4 at le: f & b1 o @: 11, .. 1st danfj the meaning qut atiggfêfttê there feSô3Us f (jï: 'ÙÎ @ pllîi the wire (X) the three petîlisg tfit 11 @ p3r un tr1n 96' ", Grain (61 of a step * #jairf? # @ Ll8f and â -HW p88t with a f'raÍn '4' 4 ..- ïaohiûê following 1s; 'ëv @ M; t (jâtit'Jfi u 3 characterized in oe that said t1! Ifi is 6fiët ± ttfé plîj; ² 8 gê-ératrice electric (64) dbj; t7fif} stir ünê r6: ttgnê @ (65) p an adjustment device (6 é8R-ë vi? 6VI! â & a O'Y: 'jC generator, not * eXoù1plfJ soUs formed tfWtJ adjustable f3i tion 5o - Machine follow ist F <y @ ïîdi6Sies 1 mme toriséo in that it eet Sââftéô poti tg6 ta t3? 3 ç. :::: - :. '3!) Of length pre-d9'eerai.H@y le thread (X) rgâîJÓFJfj 0- EMI29.2 twisted EMI29.3 60 ", Machise according to the revêrtd10fittôn 5 asae tprisëaen qus lE ') E) 1tâ!' 1offú (jj) p <? L'té5mg; nd1n Ggt (júmb11M areo a device Ii iéfiÎ'xe .: tnêl1lé'fit '(j) p: rmêt1JttiJ; fj de l' & în1a U3r of a movement îôîtgl '& tîdiîïal td.:Í)ê:vrn'ltif Émtt'ê illië fjg4i si - (; 1011 upstream limit set and is pôs1tiôn limita (1.vl if Stable and a shear '(] t' # ët f '' rE E3 E3't. $ ï 'lê àiJ! IJ1. braking tif (Ë) M fil ex) ên t @ ti6fi and @ fi t # ± SÎOfi and said polios linked âmàtlt dit- @ B.ai6- & (J'J 'P @ Uï1 dn1J @ ï? the thread (X) when said @ Mri6 ,,' 't?' r ue F ' ! 6 ' EMI29.4 limit had EMI29.5 7S HfJll1..tt U: t fiiï there lW @ fiâ1 @ ia, @ n mmµ terized in that said 'fJ: 1.sâil1. (F) 6 @ lïê, gm mâtY: t1Jf² loni; b.1âJ..n.1. (Tt1on: D s, ï; 'the frame CA) @ st3? @ Tin @ 6'16 ï.'i <Desc / Clms Page number 30> and a downstream position and this shear (F) is combined with on the one hand a counterweight (93) or other return device which tends to bring it back to its downstream position and, on the other hand, a device which makes it possible to move it back to its upstream position against the action of this return device (93), when the mandrel-holder carriage (B) is about to reach its polish, upstream limit, so that the retraction of the shears (F) upstream allows said mandrel (31) to seize downstream of the braking device (E) the downstream end of the wire (X) adjoining the reel of the unwinder. 8.- Machine according to claim 7 charac- terized in that the movable part (76) of the shears is linked to the movable member (82) of a pressurized fluid control cylinder (J), 9. Machine according to claim 8, charac- terized in that the power supply (J) of this jack is controlled by an electromagnetic device (92). 10.- 'Machine according to any one of the preceding claims, characterized in that the frame (A) is formed of a series of transverse vertical brackets (4) in the form of 0 bearing two paths (6) of wheel. - Lement for the carriage (B), the opening (5) of the brackets allowing the lateral evaouation of the bars made up of the sections of straightened and twisted wire (X), 11.- Machine according to any one of the preceding claims characterized in that the carriage (B) mandrel holder is driven in both directions by an electric motor (40) at. two directions of travel carried by this carriage or connected to it by a.) suitable transmission which means, for example with endless link (42) passing on pulleys or pinions (39 and 45) of return <Desc / Clms Page number 31> 12.- Machine according to claims 9 and 11 characterized in that the power supply to the motor (40) of the carriage (B) and of the electromagnetic device (92) for controlling the jack (J) of the shear (F) is under the automatic control of fixed contacts (I, II, III, IV) combined with a command unit (20) linked to a device, chairot (B) or other, driven by the motor (40) of the carriage. 13.- Machine according to any one of the aforementioned claims characterized in that the mandrel (31) intended to grip the downstream end of the wire (x) to pull on it and to drive it in rotation is itself driven in rotation by an electric motor (Si) carried by the carriage (B) this motor (31) being two-way and its circuit being controlled by the carriage (B) so that its direction of rotation is reversed for a short Instant () 'a little before the end of the race' downstream of said carriage, to cause automatic opening of the chuck (31) and the release of the bar section (X) already sheared at its upstream end. 14.- Machine according to any one of the aforementioned claims characterized in that there is provided transversely to the frame (A) a device (G) for discharging the upright and twisted sections or bars (Y) and this device comprises in combination a endless conveyor (100) whose upper strand moves transversely under the path of the carriage (B) to receive said bars (Y) after cutting the wire (X) and their abandonment by the mandrel (31), a count -bars (103) at the end of this strand, following this bar counter '(103) a. device (104) receiving the bars (Y) capable of tilting, a mechanism (L) to control the <Desc / Clms Page number 32> tilting of this receiving device (104) under the control of the bar counter (103), and a bundling bench (107) adapted to temporarily receive the bars (Y) released from the receiving device (104) when it is lowered. culement in order to allow bundling on site. 15.- 'Machine according to claim 14 characterized in that said baling bench (107) est'monté oscillating on a pocket (109) with movable bars in front of the machine, 16.- Machine according to claim 15 (107) characterized-in that a jack (111) connected to the bench / ensures its oscillations. 17.- Machine according to any one of the aforementioned claims characterized in that it is equipped for simultaneously straightening in parallel several son (X). The carriage (B) carrying as many mandrels (31) as son (X) and the braking device (E) for the wires in traction and in torsion being provided with as many elementary devices as there are wires. 18.- chine according to any one of the preceding claims characterized in that on the carriage (B) mandrel holder is movable a support member (160), returned by an elastic device (164 or @ against a stop (166 or 173) of the carriage, in a resting position for which it is arranged a short distance in front of the point of attachment of the wire (X) to the mandrel, in the immediate vicinity of this wire supposedly ideally straight between its two fixing points. 19.- Machine according to claims 17 and 18 intended to twist in parallel several son, charac- terized in that the resilient support member is constituted by a transverse strip (160) disposed just right. <Desc / Clms Page number 33> EMI33.1 . << ,. top of the web of yarns, 20.- chine according to claim 18 EMI33.2 19 characterized in that 1 member (160) dppui is @ orté by a support (161 or 168) mounted oscillate on the carriage (B) mandrel holder, 21. Chine according to claim 18 or 19, characterized in that the support member (160) is carried by a support (172) mounted to slide vertically in the carriage (B) port 22. Machine according to claims 5 and 19 fitted downstream of the braking device (D), with a multiple shear (F) through which the threads (X) pass. and intended to cut the latter after EMI33.3 they were twisted j characterized in that lo frame {±.) of the machine-carries a device (170 9 180,185) intended to erase the member (160) dgappui relative to said- said shears (F ) in order to allow the mandrels (31) of 0Ç to approach the last side at the end of their course towards EMI33.4 'Oc ,, i, -, 0 n7, 33.- Machine according to claim 22 on-; r: wtêr: sên bo that the support (161 or 172) of 1 support member (160) is biased in one direction by the polish device (164 or 177) and is provided with a gallot (169 or 178) intended to roll against a longitudinal cam (170 or 180) fixed to the frame (A) to the right of the shears (F). 24.- Machine according to claim 22 EMI33.5 characterized in that the device (182) for erasing the support organ for crossing the shears is electro-magnetic 25 ,, - chine according to claim 24, characterizing it on co that an electromagnet (s) por @@ is provided. é by the carriage (B) porto-mandrel and intended to attract <Desc / Clms Page number 34> a core (183) integral with the support (168) of the support member (160), the supply of this solenoid being ensured by the combination of a bli (184) carried by said carriage (B) and a trolley (185) fixed to the frame (A) of the machine, in the vicinity of the shear (F). 26.- Machine for straightening and twisting round or profiled wire supplied or crowned, in substance as described and shown in the drawing.