Abstract: A tire turn-up apparatus for selectively engaging a cylindrical tire building drum may include a base and a first plurality of finger assemblies. The tire building drum may be a selected drum from a group of drums of different drum diameters. Each finger assembly may have a backstop connected to the base and a finger pivotally connected to the backstop. Each finger may be moveable between a radially retracted and extended position to turn-up the tire carcass. Each finger may be radially adjustable on its respective backstop to align with different drum diameters.

Abstract: The present invention relates to an apparatus and to a process for building tyres for vehicle wheels, wherein sidewalls (11) are applied on opposite sides of a carcass sleeve (12) placed on a shaping drum (13). The application of the sidewalls (11) comprises: arranging each sidewall (11) as a ring around application levers (24) of a respective support (18), making an axial appendage (35) of the sidewall (11) protrude axially beyond the free ends (25) of the respective application levers (24); radially opening the free ends (25) of the application levers (24) of each support (18) so as to make the respective sidewall (11) radially expand; axially approaching the free ends (25) of the application levers (24) to the respective half-drum (17) up to engaging the axial appendage (35) with the carcass sleeve (12) and radially opening the free ends (25) of the application levers (24) to adhere the sidewalls against the carcass sleeve (12).

Abstract: A process for manufacturing a lot of tires including: selecting a first operating radial position; setting a positioning device to the first operating radial position; setting a turning up device to the first operating radial position; positioning a first annular anchoring structure on an edge of a first carcass ply; turning up the edge of the first carcass ply around the first annular anchoring structure; pulling down the edge of the first carcass ply toward the longitudinal axis of a first forming support; replacing the first forming support with a second forming support; selecting a second operating radial position; setting the positioning device to the second operating radial position; setting the turning up device to the second operating radial position; positioning a second annular anchoring structure on an edge of the second carcass ply; and turning up the edge of the second carcass ply around the second annular anchoring structure.

Abstract: A process for manufacturing tires for vehicle wheels, comprising the step of building on a forming support a carcass structure comprising at least one carcass ply and, at at least one end edge of the carcass ply, at least one annular anchoring structure comprising at least one substantially circumferential annular insert and at least one filling insert associated to said at least one substantially circumferential annular insert. The step of building the carcass structure comprises the steps of positioning the annular anchoring structure on the carcass ply by moving the annular substantially circumferential insert into contact with an end edge of the carcass ply by means of a special positioning member, pulling down the filling insert on the end edge of the carcass ply and turning up a free end portion of the end edge of the carcass ply so as to form a turned up end portion of the carcass ply including said annular anchoring structure.

Abstract: The invention enables to pressure-bond a carcass ply sheet pasted onto a rubber laminating member wound around a periphery of a building drum firmly along a recessed and projected shape of the rubber laminating member without producing a deformation or a warp of a carcass cord, by using a stitcher apparatus constituted by arranging a plurality of pressure-bond rollers having axis centers in a tangential direction of a concentric circle having a diameter larger than that of a building drum in a peripheral direction by a plurality of rows and by a constant pitch by being respectively supported to be able to progressively displace to an inner side in a diameter direction, while moving the building drum in an axial direction relative to the pressure-bond rollers on an inner side of a circular arrangement of the pressure-bond rollers, a carcass ply sheet is pressed by a predetermined pressure to pressure-bond over an entire periphery and simultaneously by the respective pressure-bond rollers progressively displace

Abstract: Tire building drum having a turn-up mechanism for use in building an unvulcanized tire using rubber tire components, having two sets of turn-up arms (14), wherein each set of arms is connected to an axially shiftable arm support (17). The tire building drum is provided with means on the one hand for shifting the arm supports in a first direction to move the sets of turn-up arms axially towards each other, wherein the arras are tiltable in radial planes from a starting position to a tilting position, and on the other hand for in a second direction, opposite the first direction, shifting the arm supports to move the arms axially apart from the tilting position into the starting position. The tire building drum is provided with a pneumatic detection device (20) (23) for detecting whether at least one of the moving parts, such as the arms or the clamping device, are in the starting position, and for giving a detection signal indicating whether or not the arms are in the starting position.

Abstract: A body ply turn-up device for turning up at least one width-end portion of a body ply expanded into a toroidal shape includes a plurality of arm components movable in the axial direction of an operating shaft and pivotable radially of the operating shaft. Guide members are respectively supported on an end portion of each arm component and coil springs are interposed in respective spaces between guide members. Elastic members respectively cover the outer surfaces of the coil springs for performing pressing at spaces between spiral wire portions thereof when the arm components are pivoted radially outward of the operating shaft. Alternatively, the guide portions include portions which are smaller than the inner diameter of the coil spring and which extend to positions nearly touching each other at a center in a lengthwise direction of each coil spring in a state that the arm components are contracted.

Abstract: Tire building drum having a drum shaft and two drum halves arranged around the drum shaft. In the drum shaft one threaded spindle is arranged. On either side of the center of the tire building drum a driving nut is arranged on the spindle. Each driving nut is fixedly connected to the drum half in question via a connection part. Each drum half has a folding arm unit that is connected to the drum half in question so as to swing. The folding arm unit is movable in axial direction of the tire building drum. Each drum half further has a bead ring core clamping unit intended for supporting and clamping a bead ring core. The bead ring core clamping unit is arranged on a cylindrical part. The cylindrical part is provided with a cylinder slot for accommodating the connection part and with a locking mechanism. The locking mechanism can be brought into engagement with the drum shaft.

Abstract: Apparatus and methods of forming a tire. A drum has an expansion device that is configured to turn-up the lateral ends of the tire carcass about respective bead-and-apex assemblies while generally maintaining a constant orientation of the bead-and-apex assemblies. Further, the expansion device turns-up the lateral ends of the tire carcass while at the same time radially expanding the tire carcass. The methods entail turning-up the lateral ends of the tire carcass around the bead-and-apex assemblies and also moving a portion of the tire carcass lying between the bead-and-apex assemblies in a radially-outward direction relative to an axis of rotation of the drum.

Abstract: A body ply turn-up device for turning up at least one width-end portion of a body ply expanded into a toroidal shape includes a plurality of arm components movable in the axial direction of an operating shaft and pivotable radially of the operating shaft. Guide members are respectively supported on an end portion of each arm component and coil springs are interposed in respective spaces between guide members. Elastic members respectively cover the outer surfaces of the coil springs for performing pressing at spaces between spiral wire portions thereof when the arm components are pivoted radially outward of the operating shaft. Alternatively, the guide portions include portions which are smaller than the inner diameter of the coil spring and which extend to positions nearly touching each other at a center in a lengthwise direction of each coil spring in a state that the arm components are contracted.

Abstract: In a body ply turn-up device, a plurality of arm components are circumferentially arranged to be movable in the axial direction of an operating shaft and to be pivotable radially of the operating shaft, guide members are respectively supported at both sides on an end portion of each arm component to be rotatable about an axis parallel to a pivot axis of each arm component, coil springs are interposed in respective spaces each between two guide members respectively supported on the arm components adjoining to be rotatable about respective arc axes around the operating shaft, and pressing members, which supplementarily cover respective spaces between the coil springs are rotatably supported on the arm components ahead of or behind the coil springs. Thus, the turn-up device can turn up both width-end portions of the body ply by an even pressing force without leaving any spaces in the circumference even in the case of being high in turn-up height.

Abstract: A process and apparatus for turning up the carcass plies in a tire, the tire including a carcass structure including at least one carcass ply provided with at least one reinforcing element coated with at least one layer of elastomeric material, and at least one annular reinforcing structure. The apparatus is equipped with a support drum conveniently shaped for supporting at least one ply and with at least one turning up device provided with an annular continuous presser element. The latter is axially translatable along an axis of the support drum and radially expandable or contractible relative to the axis of the support drum between a contracted position and an expanded position to turn up the carcass ply around an annular reinforcing structure. The device is further provided with means of adjusting the contracted position of the annular element depending on the size of the tire to be manufactured.

Abstract: An apparatus for upturning a tire-building component on a tire-building drum has a roller lever. To provide an apparatus which is capable of upturning a tire-building component on a tire-building drum, and which achieves the upturn of the tire-building component without defects, in particular unintended creasing in the side wall, it is proposed that, during the procedure of preparation for upturning, a spacer provides separation between the roller and the segment in such a way that the roller is in essence in contact exclusively with the tire-building component. The roller therefore rolls along the tire-building component.

Abstract: A tire molding apparatus folds the periphery of bead portions at a low speed with an increased pressing force. The tire molding apparatus has folding mechanisms including fingers to fold the tire component to the periphery of bead cores. Folding fingers (101) are integrally provided with cams (120), which rotate in accordance with the swing of the fingers. The fingers (101) receive a driving force of a driver (130) through cam followers (122) energized by springs and the cams (120), and open. The cams (120) are rotated in accordance with the opening of the finger, compressing the springs energizing the cam followers (122). The compression of the springs reduces the opening speed of the fingers (101), and increases the pressing force of finger rolls (104) applied to the tire component (K).

Abstract: In a body ply turn-up device, a plurality of arm components are circumferentially arranged to be movable in the axial direction of an operating shaft and to be pivotable radially of the operating shaft, guide members are respectively supported at both sides on an end portion of each arm component to be rotatable about an axis parallel to a pivot axis of each arm component, coil springs are interposed in respective spaces each between two guide members respectively supported on the arm components adjoining to be rotatable about respective arc axes around the operating shaft, and pressing members, which supplementarily cover respective spaces between the coil springs are rotatably supported on the arm components ahead of or behind the coil springs. Thus, the turn-up device can turn up both width-end portions of the body ply by an even pressing force without leaving any spaces in the circumference even in the case of being high in turn-up height.

Abstract: Tire building drum and tire building method, capable of assembling tire component members with high accuracy. A tire building drum is used, which includes at least one core body, which is disposed at an axial inside of a pair of bead lock means, and which comprises a plurality of sheets of rigid support members disposed in a toroidal shape and adapted to be displaced and thereby expanded or contracted. Bead cores are locked by the bead lock means, respectively, and a center portion of a carcass band is bulged while displacing the bead lock means close to each other. Back side portions of the carcass band are folded to radial outsides around the bead cores, respectively. The core body is then radially expanded to the maximum diameter while locking the bead cores, and tire component members are assembled onto the radially expanded core body.

Abstract: A process and apparatus for turning up the carcass plies in a tyre, the tyre including a carcass structure including at least one carcass ply provided with at least one reinforcing element coated with at least one layer of elastomeric material, and at least one annular reinforcing structure. The apparatus is equipped with a support drum conveniently shaped for supporting at least one ply and with at least one turning up device provided with an annular continuous presser element. The latter is axially translatable along an axis of the support drum and radially expandable or contractible relative to the axis of the support drum between a contracted position and an expanded position to turn up the carcass ply around an annular reinforcing structure. The device is further provided with means of adjusting the contracted position of the annular element depending on the size of the tyre to be manufactured.

Abstract: A process and an apparatus for building a pneumatic tyre for vehicle wheels, in which the tyre includes a carcass structure including at least one carcass ply, at least one annular reinforcing structure associated with the carcass structure, a tread band at a position radially external to the carcass structure, and a pair of sidewalls at axially opposite positions on the carcass structure. The apparatus has a toroidal support and at least one turning-up device provided with an annularly continuous presser element axially translatable along the axis of the toroidal support and radially expandable and contractible relative to the axis of the toroidal support to contact the axially internal surfaces of the strip-like elements and turn them up around at least one reinforcing element.

Abstract: An apparatus for upturning a tire-building component on a tire-building drum has a roller lever. To provide an apparatus which is capable of upturning a tire-building component on a tire-building drum, and which achieves the upturn of the tire-building component without defects, in particular unintended creasing in the side wall, it is proposed that, during the procedure of preparation for upturning, a spacer provides separation between the roller and the segment in such a way that the roller is in essence in contact exclusively with the tire-building component. The roller therefore rolls along the tire-building component.

Abstract: The method for molding a bead portion for a green tire includes a bead core supporting step for supporting the bead core through a carcass ply upon expanding a diameter of a bead core supporter including a seating surface for supporting a radially inner surface of the bead core. Since the bead core supporter comprises an outer piece outside of the seating surface in a tire axial direction that rises up towards outside in the radial direction with a clearance between the same and the bead core, that is larger than the thickness of the carcass ply, it is possible to flip a carcass outer region up, that is outside in the tire axial direction than a sandwiched region of the carcass ply, sandwiched and held between the seating surface and the bead core, and to deform the carcass outer region into an outer inclined piece that is inclined and extended towards radially outside without including any partially bent portions.

Abstract: A turn-up device (40) for making a molded body of an air spring on a mechanical drum (30) having expandable end portions (32). The device (40) comprises a support member (42), a plurality of turning arms (44) pivotally mounted to the support member (42), and a sleeve (46) having a plurality of fingers (72) each provided with a cam surface (74). The turning arms (44) are movable between radially outer and inner positions and are biased to the radially inner position. The turning arms (44) are positioned and sized for insertion into the spaces between the segments of the expandable end portion of the drum (30). The support member (42) is movable towards the end portion (32) of the drum (30) relative to the sleeve (46). The turning arms (44) each include a roller (62) that engages the respective cam surface (74) of the respective finger (72) when the turning arm (44) is in its radially outer position.

Abstract: To effectively restrict occurrence of radially extending grooves in tire sidewall portions, turn-up portions (N) of a tire structure member (K) are turned up around the beads (B) by synchronously moving turn-up arms (66) axially inward by a moving means (75), with turn-up rollers (70) maintained in contact with the turn-up portion (N), and simultaneously, by synchronously swinging the turn-up arms (66) radially outward by a swinging means (76). The contact pressure of the turn-up rollers (70) applied to the turn-up portion (N) can thus be easily adjusted to an optimum value, with the result that impressions (grooves) produced in the outer surface of the turn-up portion (N) (which becomes part of the tire sidewall portion after being turned up) can be kept as shallow as possible.

Abstract: Using a core manufacturing method, a green tire is obtained in which edge portions of a carcass ply are turned up at bead cores. An inner liner 40 is set on an external surface of a hard core 12, and a carcass 46 is formed thereon. A bladder 36 disposed inside the core is inflated, whereby edge portions of the carcass 46 can be turned up. Thereafter, conventionally known tire structural members such as a belt, a side tread and a top tread are set on, and a green tire is completed on the external surface of the hard core 12.

Abstract: A tyre drum has a central shaft, two ring segments around the shaft and spaced apart for supporting bead cores and, on either side outside of the ring segments, sets of axially extending arms having free ends with first turn-up means, particularly a turn-up roller, opposite second ends hinged to an axially shiftable arm support and, near the free end, a tyre component support roller rotatable on the arm. A shifter shifts the arm supports to move the second ends axially towards each other and tilt the arms in radial planes from the initial position to a tilting position for the first ends to press tyre components outside of the ring segments against an expanded part of the tyre components within the ring segments.

Abstract: A tire-assembling apparatus includes an assembling drum, radial-movement devices, and at least one axial-movement actuator. The assembling drum includes first and second halves axially opposed along a geometric axis of the drum. Each of the halves includes a plurality of circumferentially-distributed radial sectors. The radial-movement devices associated with each of the halves selectively translate corresponding radial sectors between a contracted condition and an expanded condition. The at least one axial-movement actuator translates the halves relative to each other between an approaching condition and a spaced-apart condition. Each of the radial sectors includes a holding member and a supporting member. The holding member defines an engagement seat of an annular anchoring structure to a bead-part of a carcass sleeve fitted on the drum.

Abstract: Device for turning up sidewalls of a tire. The device includes a first lever supporting body arranged on a first side of a drum center and being movable in an axial direction. A first lever system pivotally connected to the first lever supporting body. A second lever supporting body arranged on a second side of the drum center and being movable in an axial direction. A second lever system pivotally connected to the second lever supporting body. The first and second sides are arranged on opposite sides of the drum center. A base spindle is adapted to move the first and second lever supporting bodies in an axial synchronous manner relative to each another.

Abstract: A tire building drum with a turn-up device for production of unvulcanized tires, consisting of a horizontally disposed central bearing hollow shaft (1) with a driving spindle extending through the centre of the bearing hollow shaft, around which there are arranged two sets of lever arms (26) with rollers (27), between which a mechanism for supporting bead wires from both sides is located at both sides of a vertical symmetry plane, the mechanism consisting of: an axially movably arranged first guiding disc (21) with radially movably arranged clamping bead segments (33), adapted to cooperate with a mechanism for controlling radial lift of clamping bead segments (33), and an axially movably arranged second guiding disc (34) with radially movably arranged supporting bead segments (32), adapted to cooperate with a mechanism for controlling radial lift of the supporting bead segments (32), wherein the clamping bead segment (33) is provided with a space (3) for receiving supporting arms (9, 9a) with a bridge (11) of

Abstract: A turn-up device (40) for making a molded body of an airspring on a mechanical drum having expandable end portions. The device (40) comprises a support member (42), a plurality of turning arms (44) pivotally mounted to the support member (42), and a sleeve (46) resiliently mounted to the support member (42). The turning arms (44) are movable between radially inner and outer positions and are biased to the radially inner position. The sleeve (46) is movable relative to the arms (44) between a position whereat it holds the arms (44) in the radially outer position and a position whereat it releases the arms (44) so that they can be biased to the radially inner position. The airspring can be used in a large vehicle wheel suspension (i.e., a bus or a truck) and/or can be used to manipulate the lift axle of, for example, a large dump truck.

Abstract: A tire building drum includes a hollow main shaft, a pair of bead lock sections arranged concentric with the main shaft and respectively holding a bead core of a tire, and a radially expansible/contractible carcass-supporting body defining an inner shape of a carcass member extending between the bead cores. The carcass-supporting body is composed of a pair of core bodies which are concentric with the main shaft and have a plurality of expansible/contractible rigid segments circumferentially abutting on and engaging with each other. The tire building drum is provided with a pair of sliders on which the core body and the bead lock section are mounted on a single side in the axial direction, slider-moving means for moving these sliders to any required radial position and segment-expanding/contracting means for expanding/contacting the segments of each core body to any required radial position.

Abstract: Tire drum (1) including a turn-up mechanism for use in building an unvulcanized tire having tire components of rubber or provided with reinforcement cords and two bead cores which either may or may not be provided with a bead filling strip, which tire drum is provided with a central axis (5), two ring segments (6) placed around the axis and spaced apart each for supporting a bead core (3), means for radially expanding the part of the tire components that is situated within the ring segments, in which the tire building drum on either side outside of the ring segments is provided with a set of radially extending hinging arms (11), in which each arm is provided with an end oriented towards the ring segment which end has a first turn-up means, such as a first roller (12), means (20) for axially and radially moving each set of arms from a first position in which the first rollers of the set of arms form a virtually closed ring into an expanded second position for pressing the part of the tire components situated o

Abstract: Device for turning up sidewalls of a tire, wherein the device includes a first lever supporting body arranged on a first side of a drum center and being movable in an axial direction. A first lever system pivotally connected to the first lever supporting body. A second lever supporting body arranged on a second side of the drum center and being movable in an axial direction. A second lever system pivotally connected to the second lever supporting body. The first and second sides are arranged on opposite sides of the drum center. A base spindle is adapted to move the first and second lever supporting bodies in an axial synchronous manner relative to each another. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: A pneumatic tire comprises a carcass comprised of at least one carcass ply containing a steel cord(s) arranged at a cord angle of 70-90° with respect to an equatorial plane of the tire and toroidally extending between a pair of bead cores and turned up around the bead core inward or outward in a radial direction to form a turnup portion, wherein a wrap part wrapping on a peripheral face of the bead core therealong is formed in the turnup portion of the carcass ply.

Abstract: A tire building drum comprises a main drum shaft, a pair of movable bodies, approaching-separating means for moving these movable bodies in opposite directions, plural bead lock segments movably supported by each of the movable bodies in a radial direction, enlarging-contracting means for synchronously moving these bead lock segments in the radial direction, a seal member, a hollow cylindrical body and plural turnup fingers, wherein the seal member comprises an inner elongated portion extending inward from its base end part airtightly fixed to the movable body in the axial direction and an outer elongated portion extending outward from an inner end of the inner elongated portion in the axial direction.

Abstract: A false drum servers used in the manufacture of tires having a hollow cylindrical drum with a perforated surface on the drum through which air is drawn. The drawn air creating a suction surface for holding flat or sheet materials that are to be cut before transferring onto a tire building drum. When smaller pieces of flat materials are being held on the drum, the perforations that are not covered allow air to flow freely into the drum, thereby reducing the suction adhering effect of the perforated surface. The present invention provides methods and apparatus for varying the amount of perforated area through which air can be drawn into the drum, thereby changing the amount of suction adhering surface area of the perforated drum.

Abstract: Tyre drum (1) including a turn-up mechanism for use in building an unvulcanized tyre having tyre components of rubber or provided with reinforcement cords and two bead cores which either may or may not be provided with a bead filling strip, which tyre drum is provided with a central axis (5), two ring segments (6) placed around the axis and spaced apart each for supporting a bead core (3), means for radially expanding the part of the tyre components that is situated within the ring segments, in which the tyre building drum on either side outside of the ring segments is provided with a set of radially extending hinging arms (11), in which each arm is provided with an end oriented towards the ring segment which end has a first turn-up means, such as a first roller (12), means (20) for axially and radially moving each set of arms from a first position in which the first rollers of the set of arms form a virtually closed ring into an expanded second position for pressing the part of the tyre components situated o

Abstract: The present invention relates to a tire building drum. The drum has a central axis and is configured for turning up a turn-up portion of a tire component about a bead core. The drum includes a first support member, which is disposed radially about the central axis and is configured to operably support a portion of the tire component and the bead core. A set of arms is disposed about the central axis. The arms have a first end operably associated with the first support member and a second end spaced apart from the first support member along the central axis and pivotably associated with the tire building drum. Each arm is movable from a resting position to a working position. A set of bead support members is disposed about the central axis. The bead support members have a support portion. When the arms are in the working position and the bead support portions are in the support position, the support portions cooperate with the ends of the arms to support the turn-up portion of the tire-component therebetween.

Abstract: The invention concerns a method of manufacture of tires and a tire assembly drum having a body with a receiving surface for the products to be assembled, the body being mounted on a center shaft, and at least one lifting device situated at one of the ends of the receiving surface, the lifting device including a plurality of lifting fingers distributed circularly around the center shaft, the fingers extending appreciably radially and presenting a bearing surface for the products to be assembled, the fingers being controlled to be deployed essentially radially toward the outside of the drum.

Abstract: The invention concerns a method of manufacture of tires and a tire assembly drum having a body with a receiving surface for the products to be assembled, the body being mounted on a center shaft, and at least one lifting device situated at one of the ends of the receiving surface, the lifting device including a plurality of lifting fingers distributed circularly around the center shaft, the fingers extending appreciably radially and presenting a bearing surface for the products to be assembled, the fingers being controlled to be deployed essentially radially toward the outside of the drum.

Abstract: Tire building drum with turn-up apparatus for building an unvulcanized tire with tire components (1, 2) and two bead cores (3, 4) with high bead filling strips (4′). Said drum has two ring segments (6, 7) spaced from each other in order to support a bead core, drum segments (8, 9, 10, 11, 12) placed on the outside of each ring segment in order to support the tire components. Said drum further has means to radially expand that part of the tire components which is situated between the ring segments.

Abstract: A tire side member raising and pressure-joining apparatus includes two support shafts movable toward and away from each other and toward and away from a semi-produced tire, two raising rollers tapered toward their free ends and support by forward ends of the support shafts rotatably about center axes of the support shafts, respectively, and two pressure-joining rollers supported at distal ends of the forward ends of the support shafts rotatably about rotating axes perpendicular to the center axes of the support shafts, respectively. Parts of the pressure-joining rollers extend from free ends of the raising rollers. While the semi-produced tire is being rotated, side members are raised by the raising rollers and the raised side members are pressure-joined to sidewall portions of the semi-produced tire by the pressure-joining rollers.

Abstract: A simple two-stage process is disclosed for economic mass production of premium-quality heavy-duty belted tubeless and tube-type radial truck tires of various sizes using standard 30-year-old semi-automatic tire building machines heretofore used in the manufacture of bias-ply tires by the flat-band process. The old automatic machines are modified at minimal cost to receive a unique rigid expansible drum which is radially expanded 35% or more during the first-stage tire building operation. The drum may be adjusted to make tires of various widths and diameters and has a series of closely spaced radially movable segments defining a rigid segmental open-ended externally cylindrical shell having an annular rubber cover on which a complete green tire carcass is built prior to application of the belts and the tread at the second-stage machine.The shell has rigid beveled shoulders at the ends of the drum which are inclined at an angle of from 40.degree. to 50.degree.

Abstract: A process and apparatus for the manufacture of pneumatic tires comprising a carcass formed of reinforcing plies and bead cores are disclosed. The tire carcass is built up around a first drum in cylindrical configuration and bead cores are applied to the carcass. The carcass is transferred telescopically to and around a second expandable drum. The carcass is then torically shaped and the ends of the plies turned-up around the bead cores.

Abstract: A ply turn-up and stitching device for use with a tire building drum wherein the building drum supports a tire carcass thereon with ply stock or fabric wound thereon and wherein the fabric extends beyond the edges of the tire building drum. Separate means is provided to place tire beads onto the respective edges of the building drum. The ply turn-up device upon actuation moves a profiled cam to a predetermined position adjacent the drum and then actuates the turn-up device to perform a turn-up of the marginal edges of the ply stock or fabric over the tire beads followed by a stitching of the remaining fabric onto the tire carcass to complete the operation. On return of the ply turn-up device to its remote position, it carries the profiled cam away from the tire building drum to facilitate the removal of the drum.

Abstract: A wrapping over device for use with a rotatable solid body tire assembly drum. The wrapping over device includes an arcuate support having at least three conical finger elements mounted thereon. The finger elements are positioned progressively closer to an axial centerline of the tire assembly drum in a direction of rotation of the drum. A pressing roller is rotatably mounted on the support at a position between the conical fingers. A pivot drive pivotally mounts the support for rotation about an axis disposed at right angles to the assembly drum axial centerline. A parallel drive means mounts the pivot drive means for movement in a direction parallel to the tire assembly drum axial centerline.

Abstract: A process is provided for turning-up sidestrips and the ends of body plies on the sidewalls of a torus-shaped tire body. The body of the tire is expanded circumferentially, the ends are turned over and the sidewall strips are stitched simultaneously.An apparatus for practicing the process has a device provided with a support for the assembly which turns-up the sidestrips and ends of the body plies which permits insertion and removal of the assembly in the cavity of the tire.

Abstract: This invention is a tire building drum for building the stage - I carcass of a tire corresponding to the initial part of the carcass before breaker belts and the tread are subsequentially applied. The invention is in a drum and a method of using it whereby the components for making the stage - I carcass can be expanded substantially radially say between 25% and 35% of the drum radius to ensure that the side wall components extend generally in planes perpendicular to the drum axis during crowning and includes fillers fitted to or attached to the beads which can be substantially undistorted in those planes and will be similarly substantially undistorted in use at the vital area where a tire is in contact with the wheel rim.