Abstract: A pneumatic radial tire is formed by disposing a single steel cord belt layer on the outer side of a carcass layer in a tread, and providing a cylindrical organic fiber cord belt layer of a double structure on the outer side of the steel cord belt layer by winding a tape, which is obtained by burying one or a plurality of organic fiber cords in parallel with each other in a matrix, around the steel cord belt layer while bending the tape zigzag.

Abstract: A thread, intended to form a carcass reinforcement, is wound in contiguous hoops on a rigid core through an eyelet fastened on a chain mounted on pulleys arranged around the core. The eyelet carries out a reciprocating movement around the core so as to progressively and contiguously lay a hoop upon each forward movement and a hoop upon each return movement.

Abstract: A process and apparatus for arranging cut lengths of reinforcement cords in parallel on a moving rubber surface by feeding the cord into successive cord receiving receptacles on a rotor, cutting predetermined lengths of the cords introduced into the receptacles, removing the cords from the receptacles by a comb which intermeshes with the rotor and advancing and guiding the parallel cords onto the moving rubber surface.

Abstract: A radial tire for motorcycles which comprises: a carcass ply of organic fiber cords arranged radially at an angle of 70 to 90 degrees to the tire equator and turned up around bead cores to form two turned up portions and a main portion therebetween; and a belt disposed radially outside the carcass and inside a tread, wherein the radial height Ht of the radially outer edge of each carcass turned up portion is 0.5 to 1.2 times the radial height of the tread edge, both from the bead base. The belt is composed of three pieces, two lateral pieces and a central piece therebetween, each piece being made of at least one spirally wound cord having an elastic modulus of not less than 600 kgf/sq. mm and formed by winding spirally a ribbon of rubber in which the at least one cord is embedded. The width of the central piece of the belt is 0.1 to 0.6 times the tread width. The central piece is differed from at least one of the lateral pieces in respect of cord specification and/or cord arrangement.

Abstract: A tire has a carcass reinforcement preferably formed of a series of circumferential turns of a strip formed of a matrix of elastomeric material reinforced by cords which are arranged side by side and extend transversely in the strip, the turns of strip being arranged in such a manner that, when observed in radial section, they exhibit at least a certain overlap.

Abstract: A process for the manufacture of tire for high speed two-wheeled vehicles comprising making a cylindrical sleeve, attaching annular bead wires to the axial ends of said sleeve and shaping the sleeve into a toroidal configuration. A belt structure made of coils of cords is applied to the crown of said toroidal configuration. The belt is reinforced with HE cords which can be deformed to enable the tire carcass to be so largely expanded into the mold to achieve completely molding of a tread band.

Abstract: A pneumatic tire which comprises a belt disposed radially outside a carcass and inside a tread and having opposite axial edges, the belt comprising a cord continuously wound around the carcass while running zigzag between the edges of the belt to defining cord segments extending between the edges of the belt, the cord segments including first cord segments and second cord segments, the first cord segments laid substantially parallel with each other, and the second cord segments laid substantially parallel with each other and crosswise to the first cord segments.

Abstract: A pneumatic radial tire for airplanes comprises a toroidal carcass of at least two carcass plies, a tread rubber superimposed on the carcass, and a belt disposed between the carcass and the tread rubber, in which the belt is comprised of a plurality of radially inner belt plies and a plurality of radially outer belt plies, and each of the radially inner belt plies contains cords extending substantially zigzag at a cord angle A of 5-15.degree. with respect to the equatorial plane in the circumferential direction while radially being bent at both side ends of the ply, and each of the outer belt plies contains cords having a cord angle B larger than the cord angle A. In this tire, the occurrences of standing wave and cut peel off are prevented with the reduction of tire weight.

Abstract: The laying of pieces 40 of cord 4 is assured by a laying tube 30 which receives the cord by placing its inlet facing the outlet of a cord distributor, the knife 85 of which cuts the cord just upstream of the laying tube 30. At the end of the laying tube 30 there is disposed a laying head 32 which is displaced transversely along the support 1 on which the reinforcement is built. The angle of laying of the cord is adjusted by judiciously coordinating the transverse speed of displacement of the head 32 and the speed of rotation of the support 1.

Abstract: A pneumatic radial tire for heavy duty vehicles comprises a radial carcass, a belt, a belt reinforcing layer and a tread, in which the belt has a particular structure formed by using a rubberized strip containing one or more cords therein, and the belt reinforcing layer comprised of at least one rubberized cord ply in a region corresponding to at least each side region of the tread, and the belt and the belt reinforcing layer satisfy a ratio h/h.sub.0 of not more than 65%. In the tire of the above structure, the occurrence of shoulder wear is controlled together with the avoidance of belt end separation and the durability is improved.

Abstract: A toroidal carcass (1) for road vehicle tires, of the type presenting two annular beads (2, 3) connected by a toroidal reticulated structure (5) defined by tow numbers of loops (6, 7) extending in offset radial planes of the carcass (1) and from the respective beads (2, 3) to the center line of the reticulated structure (5); the loops (6, 7) being formed by winding respective continuous cords (8, 9) about the beads (2, 3) and being connected by a further continuous cord (13) extending along the center line of the reticulated structure (5).

Abstract: A thread, intended to form a carcass reinforcement, is wound in contiguous hoops on a rigid core through an eyelet fastened on a chain mounted on pulleys arranged around the core. The eyelet carries out a reciprocating movement around the core so as to progressively and contiguously lay a hoop upon each forward movement and a hoop upon each return movement.

Abstract: A motorcycle radial tire which comprises a tread curved so that the maximum cross section width of the tire lies between the tread edges, a carcass having at least one ply of organic fiber cords extending between beads of the tire and turned up around bead cores disposed one in each bead, a belt disposed radially outside the carcass and comprising a breaker and a band, the breaker comprising a first ply disposed adjacently to the carcass and a second ply disposed on the radially outside of the first ply, the first and second breaker plies made of parallel cords inclined with respect to the tire equator so that the first ply cords cross the second ply cords, the edges of the first breaker ply folded back upon the second breaker ply so that a space is provided between the axially inner edges of the folded portions, the band disposed radially outside the breaker to extend over said space, the band comprising a ply of organic fiber cords wound spirally at an angle of not more than 5 degrees with respect to the ti

Abstract: A pneumatic radial tire for airplanes comprises a toroidal carcass of at least two carcass plies, a tread rubber superimposed on the carcass, and a belt disposed between the carcass and the tread rubber, in which the belt is comprised of a plurality of radially inner belt plies and a plurality of radially outer belt plies, and each of the radially inner belt plies contains cords extending substantially zigzag at a cord angle A of 5.degree.-15.degree. with respect to the equatorial plane in the circumferential direction while axially being bent at both side ends of the ply, and each of the outer belt plies contains cords having a cord angle B larger than the cord angle A. In this tire, the occurrences of standing wave and cut peel off are prevented with the reduction of tire weight.

Abstract: In the manufacture of pneumatic radial tires each having an annular groove in its central portion, a green tire is formed from a belt-tread band having a constricted portion formed by concavely depressing a belt and a tread inward in a radial direction of the tire.

Abstract: A pneumatic tire has a carcass composed of at least one carcass ply extending from a tread part through sidewall parts and turned up around a bead core in each of two bead parts. The carcass ply comprises a plurality of ply strips which are continuously arranged in the tire circumferential direction with overlapping portions, wherein one end in the tire circumferential direction of one ply strip overlaps to an outer surface of an adjacent ply strip adjacently arranged on one end side, and the other end in the tire circumferential direction of the one ply strip overlaps to an inner surface of an adjacent ply strip adjacently arranged on other end side.

Abstract: A pneumatic radial tire has a double crown structure that an annular recess portion is arranged in a tread at a given region in a widthwise direction thereof, in which the tread is divided into a central region, a pair of middle regions and a pair of side regions and at least one auxiliary reinforcing cord layer is arranged on a belt so as to substantially envelop a crown portion of a carcass and a full radially outer surface of the belt, provided that a stretching ratio of the cords in the auxiliary reinforcing cord layer in the central region and side regions is equal to or more than that in the middle regions, whereby high-speed durability is improved together with excellent drainage while controlling the increase of tire weight and cost as much as possible.

Abstract: A radial tire for motorcycles which comprises: a carcass ply of organic fiber cords arranged radially at an angle of 70 to 90 degrees to the tire equator and turned up around bead cores to form two turned up portions and a main portion therebetween; and a belt disposed radially outside the carcass and inside a tread, wherein the radial height Ht of the radially outer edge of each carcass turned up portion is 0.5 to 1.2 times the radial height of the tread edge, both from the bead base. The belt is composed of three pieces, two lateral pieces and a central piece therebetween, each piece being made of at least one spirally wound cord having an elastic modulus of not less than 600 kgf/sq.mm and formed by winding spirally a ribbon of rubber in which the at least one cord is embedded. The width of the central piece of the belt is 0.1 to 0.6 times the tread width. The central piece is differed from at least one of the lateral pieces in respect of cord specification and/or cord arrangement.

Abstract: A belted radial tire has a belt composed of a breaker and a band, the breaker disposed radially outside a carcass and comprising at least two plies of cords inclined with respect to the tire equator so that the cords in each ply cross the cords in the next ply, the band disposed on the radially outside of the breaker and composed of a strip of rubberized parallel organic fiber cords which strip is wound spirally and continuously around the breaker from its one edge to the other edge, the number of the organic fiber cords in the strip being in the range of 10 to 25, the winding pitches of the strip changed in the axial direction of the tire so that the pitches are greater in a central region of the breaker than side regions, the pitches in the side regions being substantially a half of the strip width, and the pitches in the central region being not less than the strip width.

Abstract: A toroidal road vehicle tire carcass comprises two annular beads connected by a substantially tubular toroidal reticulated structure defined by a number of elongated reinforcing elements extending between and substantially radially in relation to the beads. The carcass is produced using at least one continuous cord for forming a first and a second continuous series of oppositely-oriented U-shaped loops, wherein the loops in both series are connected so as to weave the substantially tubular reticulated structure enclosing the two beads.

Abstract: The laying of pieces 40 of cord 4 is assured by a laying tube 30 which receives the cord by placing its inlet facing the outlet of a cord distributor, the knife 85 of which cuts the cord just upstream of the laying tube 30. At the end of the laying tube 30 there is disposed a laying head 32 which is displaced transversely along the support 1 on which the reinforcement is built. The angle of laying of the cord is adjusted by judiciously coordinating the transverse speed of displacement of the head 32 and the speed of rotation of the support 1.

Abstract: An apparatus for winding a narrow belt-shaped member in zigzag around a drum. The apparatus includes a support base, and a reciprocative motion device for reciprocatively moving the support base substantially along an axis of the drum between both ends of a predetermined region to maintain the distance between the drum and the support base at a constant value. The apparatus further includes a rocking base supported by the support base rockably about a rocking axis which is a normal to the outer surface of the drum, a rocking device for rocking the rocking base, and an attaching roller supported on the rocking base rotatably about an axis substantially in parallel with the axis of the drum for urging and attaching the supplied belt-shaped member to the drum after being wound partially around the attaching roller.

Abstract: A method and device (1) for causing a plurality of threads (7) to arrive on support (11) so as to obtain a ply (13) while imparting a nonlinear shape to the threads (7). The threads (7) are caused to arrive with controlled speed on a cylindrical drum (2) in rotation around an axis. The threads (7) are imparted the nonlinear shape by means of teeth (5) which are displaced with respect to others, parallel to the axis of rotation. At least some of these teeth are flexible between a free end in contact with a thread (7) and an anchoring zone. Plies (13) obtained with this method or device, these plies being used for instance in a tire.

Abstract: A radial tire comprises a toroidal carcass extending between beads and turned up around bead cores, and a belt reinforcement disposed radially outside the carcass and inside a tread, wherein the belt reinforcement comprises a band layer formed by plural ribbons of rubber in which one cord or two parallel cords are embedded, the ribbons are wound spirally and continuously from one edge to the other edge of the tread to be arranged side by side, the ends of the ribbons are located at the edges of the band layer, and at each of the edges of the band layer the ends of the ribbons are shifted equiangularly in the circumferential direction of the tire.

Abstract: A method and device for producing a toroidal road vehicle tire carcass, the carcass presenting an annular frame rotated about its axis in relation to a knotting device located outside the frame and employing two continuous cords for producing, on the frame, a number of substantially radial, elongated reinforcing elements, each defined by a loop. Each loop is formed by winding in a U, an intermediate portion of a respective cord, wound about a respective annular bead forming part of the frame, and which is drawn towards the other bead and connected to a corresponding loop in the other cord to form with the same a reticulated "boucle" structure enclosing the two beads.

Abstract: A belted radial tire for motorcycles which comprises: a pair of bead cores disposed one in each bead portion of the tire; a carcass extending between the bead portions through sidewall portions and a tread portion of the tire, the carcass having at least one ply of organic fiber cords arranged radially at an angle of 60 to 90 degrees to the tire equator; a tread disposed radially outside the carcass to define the tread portion; and a belt disposed radially outside the carcass and inside the tread and comprising two ply pieces made of at least one spirally wound cord having an elastic modulus of not less than 600 kgf/sq.mm, the above-mentioned tread curved so that the maximum cross section width of the tire lies between the tread edges, each of the two belt ply pieces formed by winding a ribbon of rubber, in which the belt cord is embedded, spirally around the carcass from the axially outer edge thereof toward the tire equator.

Abstract: A pneumatic tire has a carcass composed of at least one carcass ply extending from a tread part through sidewall parts and turned up around a bead core in each of two bead parts. The carcass ply comprises a plurality of ply strips which are continuously arranged in the tire circumferential direction with overlapping portions, wherein one end in the tire circumferential direction of one ply strip overlaps to an outer surface of an adjacent ply strip adjacently arranged on one end side, and the other end in the tire circumferential direction of the one ply strip overlaps to an inner surface of an adjacent ply strip adjacently arranged on other end side.

Abstract: The tire reinforcements are made from a single cord, a section (40) of which is advanced over a rigid core (2) until at least its central portion is opposite its final position on the support, whereupon folders (5) apply the section (40) radially against the core (2) by means of tappets (50) which act on the length (40) in the manner of a finger. The repetition of the same cycle as many times as there are lengths of cord in the reinforcement makes it possible to produce the complete reinforcement.

Abstract: A toroidal road vehicle tire carcass (1) having two annular beads (2) connected by a toroidal reticulated structure (4) defined by a number of elongated reinforcing elements located between and extending substantially radially in relation to the beads (2), is formed from a single continuous cord (5) for forming a succession of substantially identical groups (6) of elongated reinforcing elements, wherein each group (6) is defined by a first (7) and second (8) U-shaped loop having respective open ends (10) and respective closed ends (11) arranged along an annular interconnection line (9) extending centrally in relation to the beads (2). Each loop (7, 8) is wound about a respective bead (2), and has an open end (10) engaging the closed end (11) of the other loop (8, 7).

Abstract: A pneumatic radial tire comprises a radial carcass of at least one carcass ply, a belt and a tread successively arranged on the carcass outward from the crown portion in radial direction, in which the tread has a plurality of circumferential grooves extending circumferentially of the tire and a plurality of island portions defined by these circumferential grooves and both side ends of the tread. The belt is comprised of at least two main belt layers and an auxiliary belt layer of a specific structure formed by helically and continuously winding a ribbon-shaped ply in series.

Abstract: A method and device for producing a toroidal road vehicle tire carcass having a toroidal frame rotated about its axis in relation to a winding device and defined by two coaxial annular beads and by a removable outer annular element located radially outwards of and centered axially in relation to the two beads, so as to define, with the same, two annular openings; the winding device providing for winding at least one cord about the frame along a spiral path, each turn of which comprises two portions, a first extending outside the frame, and a second extending outside the outer annular element and through both the openings.

Abstract: Coextrusion apparatus for forming tubular elastomeric ply made up of first, second and third concentric streams of elastomeric material and a pair of coaxial helical patterns of individual reinforcing elements wound in opposite direction with respect to each other contained within the first and third streams of elastomeric material and separated by the second stream of elastomeric material. A pair of reinforcing element guides are rotatably mounted within the apparatus between stationary flow channels for the three streams of elastomeric material, and are rotated in opposite directions with respect to each other. The two helical patterns of reinforcing elements and three streams of elastomeric material merge together substantially simultaneously in concentric circles which lie in a plane generally perpendicular to a central axis of the coextrusion apparatus to form the tubular ply. A method for producing such a reinforced tubular elastomeric ply also is presented.

Abstract: A process for manufacturing a second stage tread assembly (1) of a road vehicle tire, whereby a green annular tread cap (2) is fed onto and stitched internally against, the inner annular surface (23) of an annular forming body (18) negatively reproducing the final outer annular surface (3) of the tread cap (2). A number of further annular components (7,14), comprising a reinforced annular tread belt (14), are successively fed into the annular body (18) and onto a barrel-shaped inner annular surface (5) of the tread cap (2).

Abstract: The reinforcements for tires are made from a single cord (4) laid by a laying head (3A) which describes a path of any type surrounding the rigid core (2) which constitutes a rigid support on which the tire is progressively built. The path comprises a laying zone during which the laying head (3A) applies a length of cord. Between two successive passes of the laying head (3A), the rigid core (2) turns by an amount corresponding to the laying pitch.

Abstract: A pneumatic vehicle tire with a wound bandage and a method for its manufacture are provided. In order to avoid discontinuities of the wound bandage within the area of the edges of the reinforcement belt, it is suggested to provide the strips of material for manufacturing the bandage with a narrow width in the area of the edges of the reinforcement belt and with a wide width at the center portion of the reinforcement belt. This is achieved by providing at least two strips of varying width and winding them onto the reinforcement belt such that the narrow strip of material is arranged at the edges of the reinforcement belt.

Abstract: A method and an apparatus for producing tread/reinforcement belt units for pneumatic vehicle tires in which a rotatable winding drum. a belt feeding device for a first and a second reinforcement belt layer, an overlay feeding device, a tread feeding device and a transfer device are provided. On a winding drum having double width and being axially movable, two tread/reinforcement belt units are simultaneously produced whereby in the first method steps the individual reinforcement belt layers are produced, subsequently two wound overlays are produced, and then two treads are applied one after another or simultaneously.

Abstract: Mandrel means for forming tubular tubular articles of an infinitely variable range of sizes by helical winding of strip material (25) around the mandrel means comprises a support surface defined by an endless belt (37) which extends around two support drums (36) the spacing of which is selectively variable. The mandrel means additionally comprises a belt guide assembly (38) (39) which preferably diverts the belt (37) to follow an inwardly extending path between the support drums (36) and thereby results in a peripheral discontinuity in the mandrel means support surface. The belt guide assembly may also incorporate a roller (39) to maintain tension in the belt (37) irrespective of the spacing of the support drums (36). Cutter means may be provided to cut a wound tubular article in the vicinity of the support surface discontinuity.

Abstract: A cord retention arm for use in an apparatus for making a tire reinforcement from a continuous cord and applying the reinforcement to a tire core. The cord retention arm includes an extended support having a bent end terminating in a tip for supporting a loop of the cord. The extended support includes a portion spaced more remotely from the bent end and a portion intermediate the more remote portion and the bent end, the portions being bent with respect to each other to define a plane, the said bent end extending laterally and diagonally to the plane.

Abstract: A pair of hooks for the manufacture of a tire reinforcement from a cord in which one of the hooks (32) is articulated relative to the other hook (31). It is designed in such a manner as to permit hooking of a loop of cord on both hooks, to insure grasping of one and only one strand of the loop of the cord by the second hook (32) to maintain the loop open for the insertion of a bead wire, and to optimize the position of the hooks during both the hooking and the unhooking phases.

Abstract: A pneumatic radial tire including a belt reinforcing layer or layers formed by spirally continuously winding a single organic fiber cord in a manner such that before the molding of an unvulcanized tire, the belt reinforcing layer or an outer or outermost belt reinforcing layer has a greater density of winding of the organic fiber cord in its regions located beneath or inner to a main groove-forming rib of a mold than in its remaining region, whereby after the molding of the unvulcanized tire, the cord density in the regions of the belt reinforcing layer or the outer or outermost belt reinforcing layer beneath or inner to the main groove-forming rib is set to be substantially identical with the cord density in its remaining region; and a process for the production of such tire.

Abstract: A pneumatic belted tire for motorcycle is disclosed, which comprises as a casing reinforcement a carcass composed of at least one ply containing organic fiber cords arranged at 70.degree.-90.degree. with respect to the mid-circumference of the tire and a belt composed of a belt layer containing a cord with a modulus of elasticity of not less than 600 kgf/cm.sup.2 helically arranged at a slightly inclined angle with respect to the mid-circumference of the tire. In the tire of this type, the belt is composed of at least two belt segments parted at the mid-circumference of the tire and having a helically winding arrangement of at least one cord, and has a width corresponding to 0.5-1.1 times of a tread width, wherein the cord directions of these segments are opposite to each other with respect to the mid-circumference.

Abstract: A device (1) making it possible to apply at least one thread (2) to a supt (3) and characterized by the following features:it has a front clamp (4) and a rear clamp (5) along a direction of advance (F.sub.1);it has means (6, 7) for opening and closing said clamps (4, 5);it has means (8) permitting the displacement of the rear clamp (5) in the direction of advance (F.sub.1) or in a direction (F.sub.2) opposite to the direction of advance (F.sub.1); andit has means (9) for displacing the thread (2) in transverse directions.a reinforcing ply for a pneumatic tire having reinforcing threads applied on a support in a sinuous pattern having vertices.

Abstract: A method for the manufacture of a tire in which an annular component (11) is placed onto a flexible annular support (12) and the support (12) with component (11) insitu is brought into proximity with a shaped-up tire carcass for assembly of the component to the carcass. The insitu component (11) is assembled to the shaped-up carcass by applying a load through the flexible support (12) to press said component against the carcass. The annular support (12) is locatable on an operating head (34) which includes an applier means (81) which acts on the flexible support causing it to distort and thereby transfer the component (11) to the shaped-up tire carcass.

Abstract: The apparatus concerns the manufacture of tires having at least one reinfement formed from a single thread. It is of the type comprising two coaxial crowns 1 of levers 2 the ends of which bear means 3 for retaining the thread and comprising means 5 for presenting the thread 4 to said retaining means 3. The presentation means 5 comprise a presentation head 50 carried by a flexible belt 55 mounted on two guide pulleys 51, the axes of rotation of which are perpendicular to the axis of the crowns 1, said guide pulleys 51 being arranged in the vicinity of the retaining means 3. The presentation means 5 also comprise an orifice 53 conducting said thread 4 substantially in the plane of and within the loop formed by the belt 55.

Abstract: A pneumatic radial tire includes a belt arranged on the radially outer side of a carcass, and a band arranged on the radially outer side of the belt and composed of one or more continuous organic fiber cords wound spirally and approximately parallel to the circumferential direction of the tire. A radial tire manufacturing method includes the steps of laminating a predetermined number of belt plies on a belt drum or belt ring for forming a belt, and winding one to several organic fiber cords continuously and spirally in the circumferential direction of the belt on the outer surface of the formed belt in order to form a band. A band forming device includes a device for drawing out a cord to be wound, a device for traversing a let-off device in the widthwise direction of the belt, and a device for controlling the traverse of the let-off device.

Abstract: A method of making a belt overlay structure for a pneumatic tire is provided. In the method, a belt structure is wrapped circumferentially around a cylinder which is secured to a rotatable shaft, and a ribbon comprising an elastomeric substance containing side-by-side textile cords extending longitudinally in the ribbon is provided on a let-off means. A first end of the ribbon is adhered to the outermost belt ply in close proximity to the axial center line of the belt structure, and the cylinder is rotated while ribbon is supplied from the let-off device. The let-off device first traverses to a first lateral edge of the belt structure where the lateral movement of the let-off means stops while the cylinder continues to rotate and the let-off means continues to supply ribbon.

Abstract: A method of winding a reinforcement layer of a pneumatic radial tire, which comprises providing at circumferentially spaced locations opposite to a front face of an outer peripheral surface of a building drum, a pair of traverse devices each having a fiber cord feed guide and constructed so as to be reciprocated along the axial direction of the building drum; and moving the pair of traverse devices by independent driving devices along the axial direction of the building drum while rotating the building drum, thereby simultaneously feeding rubberized fiber cords respectively from each feed device to a reinforcement belt on the building drum.

Abstract: A speed rated tire (10) is provided with an overlay structure (20) disposed radially outwardly of the belt structure (17). The overlay structure comprises a single ribbon (22) of side-by-side textile cords spirally wrapped about the belt structure such that both ends of the ribbon are in close proximity to the equatorial plane (EP) of the tire, while the axial width of the overlay structure is at least equal to that of the belt structure. The number of radial layers of cords in the overlay structure being greater at the axial edges of the belt structure than the average number of radial layers of cords in the remainder of the overlay structure. A method of manufacturing such an overlay structure is also disclosed.

Abstract: A device (1) making it possible to apply at least one thread (2) to a supt (3) and characterized by the following features:it has a front clamp (4) and a rear clamp (5) along a direction of advance (F.sub.1);it has means (6, 7) for opening and closing said clamps (4, 5);it has means (8) permitting the displacement of the rear clamp (5) in the direction of advance (F.sub.1) or in a direction (F.sub.2) opposite to the direction of advance (F.sub.1); andit has means (9) for displacing the thread (2) in transverse directions.The invention also concerns the process used in the device (1) as well as the assemblies obtained with this device (1) and this process, these assemblies being, for instance, reinforcing plies used in pneumatic tires.

Abstract: The rubber products forming a part of the structure of a tire are laid onto a rigid core by means of a volumetric extruder having an outlet orifice of small size positioned close to the surface on which the rubber is to be applied. The rubber products are built up by a meridian displacement of the orifice relative to the receiving surface with the extrusion of a controlled volume of rubber.