Abstract: In a known optical cable, optical fibers are loosely laid in a number of grooves formed within an elongate plastics extrusion. Typically the grooves follow a helical path with periodically reversing pitch, the helices centered on a central longitudinal axis of the cable. A primary reason for the helical lay is to prevent the fibers from becoming stressed should a bend occur in the cable. A further benefit of loose laying of fibers in a helical groove of periodically reversing pitch is that any elongation of the cable core is not immediately transmitted to the fiber supported by it. The fiber will move from its initial loose laid position both in a direction towards the inside curve of the helix and in a direction towards the base of the grooves. When it bears against the cable core over an appreciable length, the fiber will then be subjected to tensile stress.

Abstract: A tubular article having a peripheral groove is formed by providing the groove in the wall of a tubular blank made of thermoplastic material such as polyethylene terephthalate by applying simultaneously a pressure against the wall of the blank and axial stretching forces. In the bottom of the groove the material is drawn to yielding and the blank is simultaneously elongated.

Abstract: A mold for synthetic resin products which are to be shaped while soft, includes a pair of elongated mold parts each having opposed complementary faces with contours at least partially conforming to at least parts of the product to be shaped. A support means on which the mold parts are mounted provide for moving at least one of the mold parts relative to the other mold part to effect removal therefrom of a finished product. The mold parts are constructed and arranged so as to be bendable along their longitudinal axes to effect a change in arcuate configuration, the mold parts being made of a material which facilitates sliding of the synthetic resin product through the mold, the support means supporting the mold parts in fixed spaced apart disposition as the product is moved longitudinally between the mold parts to thereby impart to the product an arcuate configuration corresponding to the arcuate configuration of the mold parts.

Abstract: This invention concerns a metal mold for the manufacture of a vulcanized reinforced hose by the compression and vulcanization of an unvulcanized hose in the cavity of the metal mold. This metal mold comprises a movable piece, a stationary piece, and a pair of inner pieces disposed between the movable piece and the stationary piece. The movable piece, the stationary piece, and the pair of inner pieces are severally provided at the inner sides thereof with depressions corresponding to the four equal parts into which the inner surface of the cavity of the metal mold is radially divided so that when the metal mold is closed, the pair of inner pieces are synchronously moved with the movable piece and the stationary piece in the direction of compressing the unvulcanized hose.

Abstract: An improved method and apparatus for fabricating insulated cables, particularly polymeric insulated electrical power cables, resistant to the formation and growth of electrochemical trees is disclosed. Internal pressure on the conductor side of the cable is maintained lower than the external pressure on the outer surface of the insulation during extrusion. Extrusion pressure higher than the external pressure results in expansion of the insulation following extrusion. This expansion or swelling reduces the number and size of cracks and voids which are precursors of electrochemical trees. In addition, pressure curing the extruded, insulated cable with a curing medium above its melting point followed by gradual gradient cooling under internal pressure and higher external cooling fluid pressure to around room temperature optimizes the resistance of the cable to nucleation and growth of electrochemical trees.

Abstract: A method and apparatus for fusing and shaping the end of a rope, cord or the like made of heat fusible fibers avoiding the enlarged or bulbous end which normally occurs when heated in a conventional manner. The method involves inserting the cut end of a rope into a cavity of a member wherein the cavity tapers inwardly in a direction from an open end thereof to a closed bottom end, heating the member to melt the end of the rope thereby fusing together the strands and cooling the heated end of the rope to set the fused ends and shape the same to the internal shape of the cavity. The apparatus is a thin-walled, metallic member conically shaped and located at the end of a handle. A flared sleeve is also provided in which the end of the rope to be fused is inserted to compress the strands together before being heated. The conical member maybe heated by a butane torch or the like or alternatively, an electric resistance heating element maybe incorporated in a stem projecting from the handle.

Abstract: A blow molded single-walled closable container having a compression molded hinge portion is produced by closing a blow mold with a restricted central portion about a parison so as to form two hinge portions and severing the thus formed article into two sections with each of the sections forming a closable container having a top portion and a bottom portion connected by a hinge portion.

Abstract: A hydrostatic extrusion apparatus whereby semicrystalline thermopolastic polymers can be hydrostatically extruded in a solid state is described. The apparatus includes an outer tooling support means; a container assembly aligned within one end of the outer support means and having pressure means contiguous therewith whereby pressure is applied to the apparatus to both rigidly align the tooling and provide sufficient pressure for extrusion of a polymer billet within the container assembly and a receiver assembly coaxially aligned with the container assembly in the other end of the tooling means. The container assembly includes a container means, sealing means to prevent leakage of hydrostatic fluid in the container means and a die portion on the inner forward surface of the container means. The receiver assembly includes a concentrically aligned mandrel which supports and aligns a mandrel-head in spaced relationship with the die portion of the container means.

Abstract: Biaxially oriented tubular articles which are destined to provide bodies for processable food containers are made from an elongate tube of thermoplastics material as it emerges from an extruder.

Abstract: A hose clamp for supporting a vertically extending control line or hose from a position above water to subsea equipment below the water from a vertically extending vertical support such as a wire cable. The clamp includes a circular body with semi-circular halves pivotally connected at one side and having coacting locking means at their second sides for encircling the control line. The interior of the body includes a plurality of projections, preferably a plurality of vertically spaced circular rows of arcuate projections. The hose includes matching and coacting recesses on the exterior of the hose for mating with the projections on the body when the clamp is locked on the hose. Preferably, the recesses are formed by placing a heated clamp mold around the control line having heated projections similar to the projections on the body which will form the recesses by melting the exterior of the lines.

Abstract: A comestible extruding apparatus including a pressure chamber having an outlet, a hollow extrusion die journaled in the outlet, and a hollow seal force fit in the outlet and having a neck extending slidably into the hollow die, the neck and die combining to define a rotary seal for the comestible.

Abstract: A corrugator for receiving plastic from an extruder and continuously molding corrugated plastic tile therefrom. The corrugator has a plurality of mold assemblies which are continuously driven to roll about an endless trackway on the corrugator frame, a portion of which defines a molding section. Each mold assembly includes a pair of mold blocks mounted to pivotally open and close. As the mold assemblies enter the molding section, the mold blocks thereof pivotally close and come into abutting relationship with the closed mold blocks of preceeding mold assemblies to cooperatively form a corrugated molding tunnel. Extruded plastic is received by the molding tunnel which moves with and molds the corrugated tile. At the end of the molding section the mold blocks pivot away from and release the tile. To augment the formation the tile the mold blocks are cooled. Additionally a vacuum is induced between the extruded plastic and the wall of the molding tunnel to assure the mating thereof.

Abstract: A device for heating plastic pipe comprising a hollow annular housing with an inner surface including a plurality of dispersed perforations, and an inlet conduit attached to the housing. The inlet conduit is adapted to be connected to a source of heated air so the air can circulate through the device. In one embodiment, the annular housing is elongated and the perforations are uniformly dispersed around the inner surface. The inlet conduit is attached to the housing's midpoint and the inlet conduit and housing are made from sheet metal. The inlet conduit of the device is of such a diameter that the device can be slideably received on an automobile's exhaust pipe so the heated exhaust can circulate through the device in order to heat the plastic pipe.

Abstract: In apparatus for making transverse-flow cigarette filters, a rod of cellulose acetate impregnated with a plasticizing agent and having a porous covering is cut into sections each having a length of several filters. From the cutting station, the rod sections are fed longitudinally into longitudinal grooves in the periphery of a first revolving drum. The rod sections are then transferred into longitudinal grooves in the periphery of a second revolving drum having in such grooves projections for forming indentations in one side of the rod sections. While carried by the second revolving drum, the rod sections are engaged by a third revolving drum having on its periphery projections for forming longitudinally offset indentations in the opposite side of the rod sections. In another embodiment of the apparatus, the rod sections are received in transverse grooves in a conveyor belt, and are transferred in groups between opposed punches which form indentations in opposite sides of the rod sections.

Abstract: Disclosed is an apparatus for beading the edge or rim of a cup having a seamed annular sidewall and a polygonal base. A spinning head having a plurality of radially moveable forming members for contact with the rim to produce a bead is located over and in register with a cup-supporting base plate. The base plate together with relatively moveable socket forming wall members provides a seat for the cup on a cam operated elevator device which moves the cup upwardly. The socket is complementary to the polygonal base to prevent rotation of the seated and supported cup relative to the socket. The socket walls retract into a common horizontal plane with the base plate to permit rotationally driven star wheels to guide and confine cups onto the base plate in register with the forming means and off of the base plate away from the forming means. An air stream is directed into the cup to produce a positive pressure which inhibits dust from entering the cup during the forming operation.

Abstract: A belling mandrel assembly for forming in the end of a plastic pipe a belled socket having therein an annular seal pocket. A lip mold for forming the lip of the socket and a base mold for forming the base of the socket are operable to press a plurality of form block segments trapped between them. Upon the application of such pressure, the form block segments expand to form an annular ring for molding an annular seal pocket in the socket. Upon widening the distance between the lip mold and the base mold the form block segments retract to allow the mandrel to be withdrawn from the belled socket.

Abstract: Tetrafluoroethylene polymer tubes are ram extruded. Desirable quality tubes are obtained by positioning an insert between ram and mandrel to maintain the ram and mandrel concentric.

Abstract: A device is disclosed for cooling or cooling and calibrating a ribbed tubular wall of a thermoplastic material in a deformable state in which the tubular wall has a circular surface and helically extending rib turns projecting from the circular surface at spaced intervals. A cooling chain of a plurality of interconnected cooling cells is mounted between at least two adjacent rib turns, a flexible cooling conduit interconnects the cells which are adapted to pass a coolant therethrough for cooling the adjacent rib turns, and the cells have wall portions contiguously into engaging the adjacent rib turns.

Abstract: Method for connecting thin-walled plastic tubes by heat welding wherein a normal plastic tube is heated and provided with a funnel-shaped widening and another tube is heated and provided with a conical narrowing, the narrowing being pushed into the funnel-shaped widening so that these parts are heatsealed to each other.

Abstract: For the purpose of making a joint socket comprising at least two portions, namely a portion for receiving a plastic pipe end and another portion into which a rubber ring is fitted, a device for heating and softening a plastic pipe end and enlarging the radius of the softened pipe end to twice its size which includes, an inwardly slanted portion between a first outwardly slanted portion and a second outwardly slanted portion whose radius becomes smaller as it comes nearer to the front end thereof. As the result, the frictional resistance between an improved core and the radius enlarged softened pipe is reduced to a value which enables the device to be operated such that wall-thickened sockets can be made without loss of wall thickness subsequent to the radius enlarging process.

Abstract: The present invention relates to a method and apparatus for the extrusion of thermoplastic film which comprises extruding a melt of thermoplastic through an annular orifice to form a bubble or tube and while the tube is still in a semi-molten condition, passing the tube through a cooling and stabilizing means which surrounds the tube and is characterized by having a variable diameter to accommodate varying sizes of tubing.

Abstract: A tube shaping device is described for shaping the deformed end of a flexible tube, for example, toothpaste tubes, medicine tubes, paint tubes and the like. Such shaping device is constructed from a cylindrical body having an opening at one end thereof and a conical shaping member arranged within the opening extending outwardly therefrom. The conical shaping member is adapted to increasingly be received within the open end of the tube until the shape of such tube end is conformed to the circumferential shape of the base of the shaping member.

Abstract: A portable apparatus for reforming plastic pipe ends is disclosed. The apparatus includes a heat sink clamp and depth collar for locating said clamp a predetermined distance from the end of the plastic pipe end. This heat sink clamp substantially limits axial heat penetration from an oven into the plastic pipe so as to permit the reshaping of the pipe end into a sanitary flow end, i.e. an end having imperfection-free contours.

Abstract: Apparatus for drawing a mouth-neck portion of a synthetic resin bottle in the radial direction, by inserting an expanding operation zone of the apparatus into the mouth-neck portion in the heated state and expanding respective drawing pieces of the expanding operation zone in the radial direction. The apparatus includes a cylindrical wall constructed by a great number of drawing pieces, a pressing rod inserted into this cylindrical wall to expand the drawing pieces in the radial direction and an elastic tubular member to be inflated in the radial direction by high pressure compressed air.

Abstract: Disclosed herein is a mechanical expansion plug for the internal calibration of plastic material tubes in general, particularly for fashioning the seats for gaskets, that comprises a tubular extending body provided, along the lateral surface thereof, with a circumferential aperture. Inside the said body, able to slide in the two directions coaxially thereto and without the possibility of one rotating with respect to the other, there is a movable element of truncated cone conformation, provided peripherally with a first and second set of equidistant guides that extend along generatrices of the said element and alternate one with the other.

Abstract: An apparatus for facilitating assembling a length of flexible tubing on a component part which avoids the use of sealing solvents yet affords a secure placement of the tubing thereon. The apparatus and method assures a secure fitment by stretching the tubing to a predetermined dimension which is larger than the outside dimension of the portion on which the tubing is to be placed on the component part, and while in such a position the tubing is temporarily frozen by means of a coolant. An important feature in stretching the tubing to the enlarged dimension is in assuring that it is done in a uniform manner and that the stretched walls are substantially parallel to each other. This is effected by utilizing a parallel motion of jaw members which are placed within the tubing to stretch it to its expanded state.

Abstract: A guide assembly for blown plastic tubes to guide and support the tube after its extrusion from a die consists of a frame carrying a plurality of pairs of vertically-extending members distributed circumferentially around the tube. Each of the vertically-extending members carries a plurality of vertically-spaced parallel radially-inwardly-extending arms. Each arm of one vertical member of the pair cooperates with a respective arm of the other member of the pair, each cooperating pair of arms having a flexible wire support member extending between these ends, the wire engaging the tube and conforming to its circumference. As the tube diameter decreases the arms are moved simultaneously radially inward by opposite rotation of the respective vertical members, whereupon the wire conforms to the new reduced diameter, and vice-versa. The actual contact of the support member with the tube is by side-by-side cylindrical rollers (e.g. of nylon) threaded on the wire.

Abstract: In the dual extrusion manufacture of an insulated coaxial cable having one or more spiral spacing ribs 2a wrapped around an inner conductor 1 and surrounded by a tubular sheath 2b, the longitudinal contraction of the sheath during cooling and the attendant warp curvature of the rib is avoided by providing a sizing device 7 having a central die portion 12 with vacuum exhaust holes 14 therein. Water from a cooling pool 8 is drawn in through the clearance space between the sheath and the die portion as the cable passes therethrough to pre-cool and lubricate it, and one or more dies 15 are provided in the cooling pool to prevent the longitudinal contraction of the sheath and thereby avoid any appreciable rib inclination or curvature.

Abstract: A method of making a curved-tip (coude) catheter which comprises: inserting an end of a flexible, thermoplastic tube into the bore of a closed-end, hollow, tubular die which defines the desired curve of the curved-tip catheter. The tubular die is heated to a temperature above the plastic melt temperature of the thermoplastic tube, while advancing the tube into the die, to cause at least about 0.5 cm. of the tube end to collapse into a generally solid, curved mass. The die and tube contained therein are then cooled to a temperature below the plastic melt temperature, and the tube is withdrawn having a closed, formed coude tip.

Abstract: A hydrostatic extrusion apparatus whereby thermoplastic polymers can be hydrostatically extruded in a solid state is described. The apparatus includes:(a) an outer casing or tooling support means,(b) a container assembly concentrically contained within the outer casing and having pressure means attached thereto to provide extrusion pressure to a fluid in the assembly, sealing means to prevent leakage of the fluid, means for holding a polymer billet and including a die portion, and(c) a receiver assembly axially aligned with the container assembly concentrically within the outer casing having pressure means to clamp the container and receiver assemblies together, a mandrel for holding and aligning a mandrel-head in spaced relationship with the die, and means for receiving, lubricating and cooling the extrudate.Optionally, means for preheating and loading the polymers into the container assembly are provided whereby the press may be operated on a semi-continuous or continuous basis.

Abstract: Two roller elements are spatially related so that grooves therein are aligned to define an opening between the roller elements. The grooves have pluralities of cavities formed therein into which material from a line is squeezed as the line is passed through the opening so that protuberances are formed on the line. A heating element is provided to soften the line prior to having the protuberances formed, and a cooling chamber is provided to cool the line after the protuberances have been formed.

Abstract: The present invention relates to a device for moulding cylindrical pieces, comprising, on the one hand, a tube made of a rigid, elastic material, split longitudinally and tending to expand transversely under the action of its inherent elasticity and, on the other hand, holding members capable, when they cooperate with said tube, of obliging the internal cavity thereof to take a reduced section corresponding to that of said pieces to be moulded and, when they do not cooperate with said tube, of allowing said internal cavity to take an expanded section. The invention is more particularly applicable to the moulding of tubular pieces, particularly from a laminate of supple fabric impregnated with polymerizable resin.

Abstract: An apparatus for modifying the between the ribs space in a thermal plastic battery container is disclosed. The apparatus comprises a heated non-circular wiping member which when rotated about a fixed centerline defines a first circumference having a diameter substantially equal in length to the minimum between the ribs space and a second concentric circumference having a diameter greater in length than the first diameter.

Abstract: An extrusion system for covering a flexible conductor (14) with a crystalline thermoplastic elastomer insulating material by tubing the plastic onto the conductor includes a core tube (61) which is mounted in an extruder crosshead (41) such that its free end is positioned within the interior of the extruder die (59). The free end of the core tube is spaced from the die opening a predetermined percentage of the land length of the die. In this arrangement, which has been found to be suitable for a crystalline thermoplastic elastomer having a crystallization initiation temperature which is capable of being substantially near to its melting point temperature, the crosshead and the core tube are arranged to provide a streamlined flow path of the insulating material toward the die opening.

Abstract: A mold assembly is provided for making a thermoplastic container having a bottom, side and unitary closure or top wall means with a parting line along a plane of symmetry in the bottom and sidewall means but with the parting line offset on the top wall means to define a generally flat, pierceable membrane on a major portion of the exterior surface of the top wall means. The mold assembly molds and seals the container from a tube of thermoplastic material, which assembly includes mold parts having lower sections adapted to open and close relative to a center parting plane to shape the bottom and sidewall means of the container and having a pair of upper sections adapted to shape the unitary closure. One of the upper sections has a removable protuberance for forming a major portion of the container top closure surface with the mold parting line thereon offset relative to the center parting plane of the mold assembly.

Abstract: A stretched plastic casing is tensioned by means of a fluid medium after having been introduced into two clamping rollers, and conveyed to a bending member in front of or at the location of which it is subjected to a thermal treatment such, that it is bent out of its original path, while being thermally deformed, and is subsequently conveyed in the same direction of curvature, in a bent form, so as to be cooled down.

Abstract: A machine assembly for producing lengthy rolls of bakery products such as biscuits and the like, wherein the machine includes an inlet work station having a device for forming a plurality of separate bars of dough and the machine also includes an outlet work station having a device for forming a continuous spiral in each of the bars of dough with the spirals interlocking to form a braided roll of dough. The machine assembly further includes a conveyor assembly for transporting the bars of dough between the inlet and outlet work stations while kneading and rolling the bars into their final configuration.

Abstract: A process for forming a mouthpiece on a preform formed from a tubular blank consisting of thermoplastic material, which is intended for the production of a container, e.g. by blow molding, whereby connecting means, such as a thread, which is adapted to a suitable form of closure of the container is formed on the outside of the mouthpiece. The process comprises inserting the blank between an outer mold section with a mold portion for the attachment surface of the connecting means and an inner mold section, whereupon a driven relative axial movement of the two mold sections relative to each other forces the material of the blank, in tightly enclosed manner, radially outwards into the mold portion for the attachment surface, and an axial head cup is provided.

Abstract: Socket pipe of thermoplastics having a groove with longitudinally extending additional recess, which groove is bound by a radially extending head portion.

Abstract: In orientation-blow molding equipment, improved heating equipment is used for evenly and uniformly heating an injection molded piece under optimum temperature conditions for the succeeding biaxial orientation, with the aid of an improved jig which contributes to an efficient reheating and molding of the piece.

Abstract: This invention relates to a machine for and a method of making building products from a coiled sheet of thermoplastic polymer such as polyvinyl chloride. In the practice of this invention, portions of the polymeric sheet are selectively and sequentially heated and progressively bent to the desired shape by passing the sheet through a series of heating, forming and cooling stations.The simplified design of the machine enables the user to custom fabricate building products at a construction site with a resulting savings in cost. Typical products adapted to be made in accordance with the invention are exterior building siding, siding accessories and other building products.

Abstract: A device for expanding heat-shrinkable polymer tubes includes inlet and outlet chambers coaxially and consecutively arranged for immediate contact in the direction of tube advancement. Each chamber is made up of adjoining bushes having threads at the inner surface thereof. The threads of adjacent bushes of each chamber are of the opposite direction. A group of bushes of each chamber having a common thread direction is provided with an independent rotating drive.

Abstract: A process and apparatus for putting a lip on a thick-walled tube of flexible material such as polyethylene comprises a cold rolling of the thick-walled tube with as little friction as possible on the wall of the tube. This is effected by vertically mounted rollers where the axis thereof is in substantial alignment with the axis of the tube being flared. At least one of the mandrels is rotated, and at least one of the mandrels is mounted for vertical movement and for putting pressure upon the wall of the tube during the rolling.

Abstract: Apparatus for use in the manufacture of socketed thermoplastics pipe by the radial expansion of a pipe blank. The apparatus includes an open-ended central mould portion 12 which can be raised or lowered on stanchions 10, 11 to three predetermined positions; a pair of mould end portions 15, 17 each having a supporting mandrel 19, 20 engageable with the pipe blank 28, end portions 15, 17 being advanceable to and retractable from the central mould portion 12. One of the mould end portions 15 is internally contoured to provide part of the socket-forming portion of the mould. The mould end portions 15, 17 can be held in an intermediate position, partially advanced towards the central portion 12 to locate the blank 28 on mandrels 19, 20 before closing of the mould.

Abstract: Plastic pipe is continually produced from a curable resin on a plurality of horizontal mandrels which are repeatedly simultaneously moved between plastic pipe production stations. There is at least one station for applying resin to a mandrel, at least one station for curing resin on the surface of a mandrel, and at least one pipe removal station for removing pipe from a mandrel. The pipe stations are substantially radially equidistant from a central horizontal axis and are circumferentially spaced apart by substantially equal increments around the horizontal axis. Each mandrel is progressively rotated between the stations.The temperature of each mandrel is controlled by passing a fluid through the mandrel. Heating fluid passes through mandrels in resin cure stations and cooling fluid passes through mandrels in resin application and pipe removal stations. A control system minimizes mixing of the cooling and heating temperature control fluids when the mandrel is rotated between stations.

Abstract: A device for expanding flexible tubes and similar elastic articles including a cable, hydraulic or air actuated cam coupled to move projecting fingers for expanding the elastic article. The device includes a housing pivotally mounting two opposed parallel blocks, each of which includes a cam follower surface and a projecting finger. Initially, the spreading finger elements are inserted into a tube or other elastic article and the cam is moved against the cam follower to pivot the blocks away from one another. At that time, the attached fingers also rotate away from one another and act to expand the tube or elastic article. The housing is constructed to enable the cam and drive to be interchanged for cable, hydraulic, or air cylinder actuation.

Abstract: The serrated end portions of the barrels of catamenial tampon inserters are permanently deformed into a substantially hemispherical shape by applying heat and pressure thereto in depressions provided at the periphery of a container which accommodates a confined body of liquid, such as silicon oil, and a heating device which maintains the temperature of the body of liquid within a predetermined range. The heating device includes an electric heater which extends only over a part of the trajectory of movement of the deforming depressions. The barrel preforms are supplied to alternate depressions of an odd number of depressions and the final assemblies are discharged only after they have completed more than a full circle about the axis of rotation of the container.

Abstract: A thermal energy storage device and method for making the same. The thermal energy storage device is in the form of a sealed tube-like container such as a tube-like cylinder or other geometrical configuration partially filled with a phase change material such as calcium chloride hexahydrate. The cylinder is made of tubular high density polyethylene and more particularly an ultra high molecular weight high density polyethylene having a molecular weight of about 500,000 to 700,000 which is tough, chemically resistant, withstands low and high temperatures, acts as a moisture vapor barrier and can be fused and sealed. The calcium hexahydrate is filled in an open top cylinder, closed at the bottom by dissolving two parts of calcium chloride dihydrate with one part of water to provide calcium chloride hexahydrate in liquid form. The cylinder is filled to about 90% by volume and a cap of the same material is then preheated to about fusion temperature.

Abstract: A curved mandrel, method of making same, and method of curing an uncured polymeric hose employing such curved mandrel are provided and the curved mandrel comprises a plurality of members disposed in end-to-end relation to define the configuration of the mandrel including a predetermined curvature therein, interlocking portions for interlocking the members in only one position to define the configuration and curvature, and a readily attachable and detachable device for holding the members axially against each other after interlocking wherein the members with the interlocking portions and holding device are adapted to provide a substantially straight mandrel for installation of an uncured straight hose therearound, define the configuration and curvature in the mandrel and uncured hose, and provide looseness and axial spacing between members to enable easy withdrawal of the cured curved hose from around the members.

Abstract: Herein disclosed is a method of orienting the neck of a bottle of a saturated polyester resin so as to enhance the physical properties and durability of the neck. The neck orienting method includes the step of inserting an orienting rod having a taper head into the neck which is being heated. The neck orienting method may include the step of orienting only the mouth edge of the neck.