Abstract: An apparatus for molding a sheet of thermoplastic material in which the sheet is forced into an open chamber formed in a die member by means of a punch member adapted to engage the sheet in a substantially line contact to stretch the sheet into the chamber and against the inner wall of the die member.

Abstract: The invention disclosed sets forth a method and machine for forming a sleeve of a shrinkable, cellular polymeric material from a predecorated web. The web is processed to provide (1) a partial-depth slit along the longitudinal dimension, and (2) cross-dimension pleats. Predecorated shrunken neck labels are formed from the web for overlying the neck and closure of the bottle and including a pilfer-proof feature. Such a label is formed from the processed web by cutting a blank having the cross pleats therein and winding the blank on a mandrel to overlap the ends and seam the overlap to make a sleeve. The sleeve is stripped onto the top neck end and over the closure of a bottle of room temperature to a label position and shrunken to a snug fit, the pleats absorbing wrinkles that occur in shrinking the material onto a "cold" bottle.The disclosure includes a novel machine for making the sleeve from a plastic web and placing it on the bottle.

Abstract: The invention disclosed sets forth a method and machine for forming a sleeve of a shrinkable, cellular polymeric material from a predecorated web. The web is processed to provide (1) a partial-depth slit along the longitudinal dimension, and (2) cross-dimension pleats. Predecorated shrunken neck labels are formed from the web for overlying the neck and closure of the bottle and including a pilfer-proof feature. Such a label is formed from the processed web by cutting a blank having the cross pleats therein and winding the blank on a mandrel to overlap the ends and seam the overlap to make a sleeve. The sleeve is stripped onto the top neck end and over the closure of a bottle of room temperature to a label position and shrunken to a snug fit, the pleats absorbing wrinkles that occur in shrinking the material onto a "cold" bottle.The disclosure includes a novel machine for making the sleeve from a plastic web and placing it on the bottle.

Abstract: The invention disclosed sets forth a method and machine for forming a sleeve of a shrinkable, cellular polymeric material from a predecorated web. The web is processed to provide (1) a partial-depth slit along the longitudinal dimension, and (2) cross-dimension pleats. Predecorated shrunken neck labels are formed from the web for overlying the neck and closure of the bottle and including a pilfer-proof feature. Such a label is formed from the processed web by cutting a blank having the cross pleats therein and winding the blank on a mandrel to overlap the ends and seam the overlap to make a sleeve. The sleeve is stripped onto the top neck end and over the closure of a bottle of room temperature to a label position and shrunken to a snug fit, the pleats absorbing wrinkles that occur in shrinking the material onto a "cold" bottle.The disclosure includes a novel machine for making the sleeve from a plastic web and placing it on the bottle.

Abstract: Collapsible core assembly having retractable portion capable of producing plastic parts having an undercut. The core assembly comprises a segmented portion operably connected to an innercore pulling assembly whereby operation of the innercore pulling assembly first retracts the segmented core and thereafter pulls the complete core assembly out of the molded part.

Abstract: The invention disclosed sets forth a method and machine for forming a sleeve of a shrinkable, cellular polymeric material from a predecorated web. The web is processed to provide (1) a partial-depth slit along the longitudinal dimension, and (2) cross-dimension pleats. Predecorated shrunken neck labels are formed from the web for overlying the neck and closure of the bottle and including a pilfer-proof feature. Such a label is formed from the processed web by cutting a blank having the cross pleats therein and winding the blank on a mandrel to overlap the ends and seam the overlap to make a sleeve. The sleeve is stripped onto the top neck end and over the closure of a bottle of room temperature to a label position and shrunken to a snug fit, the pleats absorbing wrinkles that occur in shrinking the material onto a "cold" bottle.The disclosure includes a novel machine for making the sleeve from a plastic web and placing it on the bottle.

Abstract: A device for producing expansions and in particular inside grooves, such as packing grooves, in plastics pipes and pipe components. The device comprises a form ring for shaping the inside profile of the expansion, the circumference of which ring is divided into two groups of segments, which can be shifted radially inwards so that the form ring can be disassembled and removed from the pipe after shaping of the expansion, a mandrel that can be shifted axially through the form ring, a core body that surrounds the mandrel and in relation to which the mandrel can be shifted axially, and two groups of first inclined faces, in connection with the mandrel, one face group for each segment group, so as to produce radial movement of the segments, for example by forcible controlling, whereby the first group of inclined faces is arranged axially at a distance from the second group of inclined faces.

Abstract: A curved hose molding device which includes a curved mandrel with a fixed collar near one end and a removable elastomeric collar near the opposite end, the collars defining means for molding the ends of a hose carcass a desirable length apart.

Abstract: A one-use bottle-shaped container has a cylindrical shell portion, a base portion which has an inturned flange continuous with the shell portion, a central disc sealed to the flange and a bottleneck-shaped upper portion terminating in an opening considerably smaller than the cross-sectional area of the cylindrical portion.

Abstract: A bread dough rounder bar for use with conventional dough dividing equipment to convert a dough piece into a rounded dough ball which may be subsequently processed into a bread bun or roll or the like. The rounder bar includes a work surface which varies in cross-section between an entrance section, a compression section and a rounding section.

Abstract: A gas-permeable seamless pipe structure formed in a pipe shape by a wet process comprising (A) 20 to 95% by weight of thermoplastic fibers and (B) 5 to 80% by weight of a component consisting of (a) 20 to 100% of other fibers being infusible at the fusing temperature of said thermoplastic fibers (A) or having a higher melting point than said thermoplastic fibers (A) and (b) 0 to 80% by weight of a void-containing particulate material having an apparent density of not more than 1 and an average particle size of 20 to 2,000 microns and being infusible at the fusing temperature of said thermoplastic fibers (A), said thermoplastic fibers (A) being bonded to the other component (B) as a result of heat fusing; a method for producing the pipe structure; and an apparatus for use in this method. The pipe structure has superior physical properties such as strength and hardness, good water resistance, light weight and superior gas-permeability.

Abstract: A fiber reinforced composite tube is molded by applying an annular, liquid-resin-impregnated layer of reinforcing fibers to a cylindrical mold or mandrel; placing in contact with the exposed surface of the fiber-resin layer a compression sleeve which is split lengthwise to permit circumferential contraction or expansion of the sleeve into pressurizing relation with the layer; pressurizing the compression sleeve with fluid pressure to compress the fiber-resin layer and thereby compact the reinforcing fibers and expell entrapped air and excess resin from the layer; and curing the resin while the fiber-resin layer is so compressed.

Abstract: Apparatus is provided for shaping a generally elongate strip of lubricant wicking material and placing it into a component for a dynamoelectric machine. In this apparatus, means is provided for receiving the strip when it is introduced thereinto, and means associated with the receiving means is operable generally for moving the strip therefrom and converting the shape of the strip into a predetermined configuration. Means is provided for predeterminately locating the dynamoelectric machine component on the apparatus with respect to the moving and converting means, and means is operable for displacing the strip generally in its predetermined configuration from the moving and converting means into place within the dynamoelectric machine component.

Abstract: A device for forming a tube of plastic material with a socket having an annular corrugation has a tube supporting core and a plurality of radially movable segments provided adjacently with contacting wedge surfaces, the segments in outwardly shifted position defining a circumferentially beaded portion for forming the annular corrugation on the supported tube.

Abstract: A plurality of groups of mandrels are arranged for movement successively through a plurality of workstations with each group being worked on at a station while other groups are being worked on simultaneously at other stations to produce continuously automatically groups of retractile cords. Cordage is fed from a supply into clamping engagement with each of the mandrels in the group in a cord-loading position and then wound in a plurality of spaced-apart convolutions on each of the mandrels of that group after which the wound cords are severed from the cordage supplies. The wound cords are advanced incrementally through a heating zone, wherein the cords are exposed to radiant heating supplemented by preheating of the mandrels while cordage is being wound on the next successive groups of mandrels.

Abstract: A reusable cylindrically shaped, pivotally collapsible, foam mandrel used for the manufacture of hollow resin impregnated fiber tubes. The mandrel includes a substantially rigid foam cylindrical member, an extractable bar, and a means on the outer surface of the foam member for aiding in collapsing the cylindrical member, such as a groove. In one embodiment a hinge member is employed to further aid in the pivotal collapsibility of the foam cylindrical member.

Abstract: A normally rigid plastic pipe is shaped by softening a selected zone of the pipe, inserting into the softened zone a resiliently deformable mandrel and pressing axially on opposite sides of the mandrel. This expands the mandrel radially into frictional engagement with the softened pipe zone. Contemporaneously the mandrel is shortened axially, thereby correspondingly expanding radially and shortening axially the softened portion of the pipe while proportionately thickening its side walls.

Abstract: A hot stamping die chase is disclosed. The die chase features a base onto which a die is attached. Surrounding the die is a support frame for supporting the article to be stamped as it passes over the die. The article support frame has openings therethrough through which the die protrudes.

Abstract: A preform of generally elongate conical configuration from the open end thereof to the opposite smaller end closed, as by a rounded tip portion, with a smooth interior surface throughout the major portion thereof from the tip portion to an area adjacent the open end; and the telescopic association of the preform with a heated complementally shaped smooth surfaced mandrel; the area of the preform adjacent the open end thereof having internal circumferentially spaced surface portions providing passages therealong for vacuum withdrawal of air to conform the inner surface of the major portion of the preform in intimate thermal contact with the mandrel prior to conformation of the passaged area of the preform with the adjacent surface of the mandrel under heating of the preform to molding temperature and subsequent association of the mandrel and preform in a female mold for re-shaping the preform under applied differential pressure.

Abstract: A method and assembly for forming the bell end of a bell and spigot joint connecting two pipes together are disclosed herein. The method, which also includes the formation of an inner circumferential groove in the bell end, utilizes a core section in forming the bell end and an adjacent groove forming arrangement in forming the inner circumferential groove. The groove forming arrangement comprises a plurality of core segments which cooperatively move in a plane perpendicular to the longitudinal axis of the bell forming core section between an expanded position to form the groove and a collapsed position for removing the ultimately formed bell end from the core and core segments. With the core segments in the collapsed or expanded position, an end section of a heat deformable pipe, heated to its deformable state, is contoured around the core section and core segments. Thereafter, the core segments, if initially collapsed, are moved to the expanded position.

Abstract: Method and apparatus for converting, by reshaping, thin-walled nestable plastic containers into non-nestable container products wherein the nestable container is telescopically mounted on and releasably locked to a complementary male mold member, the nestable container thereafter being heated to a predetermined temperature to permit ready deformation thereof, and subsequently expanded against the non-nestable inner wall configuration of a mold cavity by differential fluid pressure to form non-nestable container products. In order to mold uniform container products by a continuous molding operation, the nestable plastic container is held in fixed relation relative to the male mold member in the vicinity of its open mouth where the container is insulated from heat.

Abstract: A molding machine into which nested stacks of preforms or parisons at ambient temperatures are loaded, which denests and applies the preforms individually onto complementary shaped mandrels in the machine. The preforms are made of a thermoplastic material, such as polystyrene, and the mandrels of the molding machine are internally heated to heat each parison as the machine is intermittently rotated. The mandrels are circumferentially mounted about a carriage in the machine and the carriage rotates about a horizontal axis. When viewing the machine at the side at which the carriage rotates in a counterclockwise direction, the preforms are individually applied to the mandrels at the three o'clock position by a loading mechanism. From the three o'clock position around and to the six o'clock position each preform is being heated on its mandrel.

Abstract: A method of forming the bell end of a bell and spigot joint connecting two pipes together is disclosed herein and utilizes a mandrel assembly including an elongated core and a retractable ramp arrangement. A sealing gasket is positioned around the core and to one side of the ramp arrangement. Thereafter, an end section of a heat deformable pipe, heated to its deformable state, is moved concentrically over the core, retractable ramp arrangement and sealing gasket to form an enlarged sleeve or bell having an inner circumferential groove within which the sealing gasket is located. During this movement, as the heated end section approaches the sealing gasket, the ramp arrangement causes the end section to deform outwardly and over the gasket, whereupon the ramp arrangement retracts inwardly for allowing the outwardly deformed end section to shrink back to the core and around the gasket.

Abstract: Apparatus has heretofore been provided for the automatic pre-casting of concrete curbing. The pre-cast curbing, in a zero slump state, emerges in spaced parallel pairs from this apparatus. The present invention provides for an initial bending of both curbs in opposite directions by the insertion of a tool between them. Then, a final bending is performed to the desired curvature. The apparatus comprises an elongated prebending member having an inverted triangular section and convex sides from end to end. The maximum curvature is at the top, and it gradually tapers away toward the bottom so that the amount of curvature to the curbs is controlled by the depth of penetration of the member between the curbs. A second, generally inverted U-shaped member is formed with the required bend. This member is forced over one of the curbs to complete the bend. It is then lifted, turned 180.degree., and forced over the companion curb to complete its bend.

Abstract: Apparatus for applying cover elements of heat shrinkable plastics material upon the externally screw threaded metal necks of dispensing containers such as toothpaste tubes comprises a floating mandrel rod assembly adapted to be disposed within the leading end of a continuous length of synthetic plastics tubing for cooperation with feeding and cutting arrangements for operating upon the tubing to separate therefrom successive cover elements of desired length and dispose each element on a container neck prior to a heat shrinking operation for permanently securing the elements upon the threaded necks.

Abstract: In an expansible core, a plurality of first plate segments are moved radially outwardly by means of a conical portion on an operating rod which is moved axially along the longitudinal axis of the core. A plurality of second plate segments are moved axially by the operating rod into the plane of the first plate segments and then expanded outwardly into the spaces between the first plate segments. First and second retraction means are also provided on the operating rod and are engageable respectively with the first and second plate segments to retract the plate segments from their expanded positions upon axial movement of the operating rod in the other direction.

Abstract: A molded plastic fixture holds an end of a telephone wire cord wound on a mandrel to retain the cord in position during subsequent heat processing. The mandrel fits into a bore in the fixture and an angled arm extending from one side holds a band spacer and strain relief member at the end of the cord. An opposite side of the fixture includes a channel to receive cords with no strain relief member. A manually adjustable screw clamps the end of the mandrel within the bore of the fixture.

Abstract: A tube expander apparatus having an axially displaceable central shaft, a plurality of convex expander shoes in succession circumferentially around the shaft, and pivoted linkage arms between the shaft and the expander shoes and including:A. first linkage arms pivoted to the expander shoes and to a fixed support collar which slidably passes the shaft;B. and second and third linkage arms which are pivoted to the expander shoes above and below the latters' axial midpoint and to collars fixed to the shaft.